Works-in-Progress package Version 1.0. For the SIEMENS Magnetom. Installation and User s Guide NUMARIS/4VA21B. January 22, 2003
|
|
- Godfrey Mosley
- 5 years ago
- Views:
Transcription
1 Works-in-Progress package Version 1.0 For the Installation and User s Guide NUMARIS/4VA21B January 22, 2003 Section of Medical Physics, University Hospital Freiburg, Germany Contact: Klaus Scheffler PhD, Hugstetterstr. 55, D Freiburg, klaus.scheffler@unibas.ch
2 Table of Contents 1 Basic principles Implemented ging techniques Sequence structure and timing References Software Installation Procedure Installation Restart the System Sequences and Protocols Slice and inversion slab positioning Other parameters Calculation of ASL images Page 2 of 11
3 1 Basic principles Pulsed arterial spin labeling techniques (PASL) such as PICORE, TILT, STAR, and FAIR, are frequently used to measure regional cerebral blood flow and perfusion (1-4). These techniques avoid the application of a contrast agent and have the potential to give quantitative perfusion values. Most applications of PASL techniques are based on a combination of spin labeling and image acquisition with echo planar imaging (EPI). Due to susceptibility artifacts the application of EPI-based labeling techniques is limited. Alternatively, single-shot TSE methods such as STAR-HASTE may cause blurring along phase-encoding direction due to T2 relaxation, and the temporal resolution compared to EPI is reduced (5). The ASL TrueFISP technique is based on the combination of a steady state free precession (TrueFISP, balanced FFE, FIESTA) imaging sequence and pulsed arterial spin labeling (6-8). 1.1 Implemented ging techniques Four different pulsed arterial spin labeling techniques, PICORE, TILT, STAR, and FAIR, are implemented together with a TrueFISP readout. Orientation and thickness of the inversion slabs and imaging slices can be chosen arbitrarily. Inplane saturation before inversion can be switched ON or OFF. The number of dummy repetitions before averaging can be chosen between 0 and 6. For averaging an inner or outer loop can be chosen: for inner loop averaging (short term) all ged images will be averaged followed by averaging of the non-ged images; for outer loop averaging (long term) pairs of ged and non-ged images will be averaged (see 1.2 and 3.2). The number of contrasts is always 2 (ged and non-ged). PICORE: Selective inversion below imaging plane versus off-resonance inversion. selective inversion 10 khz offresonance inversion Page 3 of 11
4 TILT: Selective inversion ( ) versus selective nothing (90-90 ) below imaging plane. selective inversion STAR: Selective inversion below imaging plane versus selective inversion above imaging plane. selective inversion selective inversion FAIR: Selective inversion within imaging slice versus global inversion. global inversion selective inversion Note: Tagging (inversion) slabs shoud not be too close to the imaging slice in order to prevent partial saturation of the imaging plane. A distance between ging slab and image plane of 10% of the slab thickness is recommended. Page 4 of 11
5 1.2 Sequence structure and timing Imaging is performed with a conventional α/2-prepared 2D TrueFISP sequence. RF and echo spacing is equal to 2TE. Selective and non-selective inversion pulses are based on an optimized adiabatic full passage pulse (included in external file hypersec.pls). The Tag Delay is the time between end of pulse and start of imaging. TR is the time between consecutive s/s: in-plane sat (optional) imaging slice(s) or Tag Delay TR Averaging mode can be inner (short term) our outer (long term) averaging: outer averaging inner averaging inner averaging Page 5 of 11
6 1.3 References (1)Wong E et al. NMR in Biomed. 10:237; (2)Golay X et al. JMRI 9 :454 ; (3)Edelmann RR et al Radiology 192 :512 ; (4)Kim S-G. MRM 34 : 293 ; (5)Chen Q et al. MRM 38 : 404 ; 1997 (6)Scheffler K. Proc. MR Angiography 2001, p (7)Martirosian P et al. Proc. ISMRM 2001, p (8) Scheffler K. ISMRM 2002, p Page 6 of 11
7 2 Software Installation Procedure 2.1 Installation The ASL TrueFISP installation CD contains the following files: 1. The Word document WIP-ASL_trufi_VA21B.doc 2. A folder named protocol that contains 2.1. A file named WIP_EXPO.edx 2.2. A folder named WIP_EXPO.edxdir To install the WIP package please: 1. Place the CD in the drive tray. 2. Open the Exam Explorer. 3. Open a program region and a subprogram region. 4. Click on this subprogram region and select Object/Import. 5. Select the CD drive in the pop-up window, double-click on the folder protocol and select the file WIP_EXPO.edx. To install the external RF pulse please: 6. Place the CD in the drive tray. 7. Open the Windows NT Explorer (with -escape). 8. Select the CD drive 9. Go to folder protocol/wip_expo.edxdir/customerseq. 10. Copy the file hypersec.pls to C/MedCom/MriSiteData/measurement/. 11. Close the Windows NT Explorer and eject CD. 2.2 Restart the System In order for the changes to take effect (external RF pulse), you will need to restart System. Page 7 of 11
8 3 Sequences and Protocols 3.1 Slice and inversion slab positioning The positioning of the slice(s) and the ging slab(s) is free and independent. This offers the possibility of dedicated ASL measurements, for examples in the kidneys. For PICORE, FAIR, and TILT there is only one ging slab, STAR requires two ging slabs. Tagging slabs can be accessed and modified via the UI on the Geometry/Saturation card. In the PICORE, FAIR, and TILT mode the user must switch on one region as showed below: For STAR the user have to select two regions. Page 8 of 11
9 Changing from STAR to PICORE, FAIR, or TILT one region will be automatically deleted. Examples for slice and region positioning are shown below for brain and kidney measurements: PICORE or TILT FAIR STAR PICORE or TILT For the ASL measurement on the kidneys the region is in saggital orientation in order to the blood in the descending aorta. The imaging slice is coronal or transvers. 3.2 Other parameters The four different ging techniques can be chosen via the Contrast card by selecting the Tagging button: Page 9 of 11
10 The most important parameters are the Tag Delay (time between inversion and start of image acquisition) and TR (time between successive inversion pulses). For multislice imaging the Tag Delay is still the time between and start of image acquisition. Images will be acquired sequentially (descending or ascending) and will thus have different Tag Delays. Typically a Tag Delay of 1000ms 1300ms and a TR of 2000ms 2500ms, and a flip angle of is recommended: The signal-to-noise ration of the ASL images is proportional to the square root of the number of averages. For brain studies about 20 and for the kidney about 4 averages are recommended. As depicted in 1.2 the user can chose between inner (short term) and outer (long term) averaging. Long term averaging is recommended. Page 10 of 11
11 3.3 Calculation of ASL images The sequence produces pairs of ged and non-ged images separately. Perfusion images have thus to be calculated by subtraction using the Dynamic Analysis software on the scanner: For PICORE, and TILT image 1 have to be subtracted from image 2: 2-1. For FAIR image 2 has to be subtracted from image 1: 2-1. For STAR subtraction depends on the positioning of the two inversion slabs. Page 11 of 11
IR/SR TrueFISP. Works-in-Progress package Version 1.2. For the SIEMENS Magnetom. Installation and User s Guide NUMARIS/4VA21B.
Works-in-Progress package Version 1.2 For the Installation and User s Guide NUMARIS/4VA21B January 22, 2003 Section of Medical Physics, University Hospital Freiburg, Germany Contact: Klaus Scheffler PhD
More informationNoninvasive Blood Flow Mapping with Arterial Spin Labeling (ASL) Paul Kyu Han and Sung-Hong Park
Noninvasive Blood Flow Mapping with Arterial Spin Labeling (ASL) Paul Kyu Han and Sung-Hong Park Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon,
More informationExperience in implementing continuous arterial spin labeling on a commercial MR scanner
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 6, NUMBER 1, WINTER 2005 Experience in implementing continuous arterial spin labeling on a commercial MR scanner Theodore R. Steger and Edward F. Jackson
More informationEPISTAR MRI: Multislice Mapping of Cerebral Blood Flow
EPISTAR MRI: Multislice Mapping of Cerebral Blood Flow Robert R. Edelman, Qun Chen A method is described for multislice EPISTAR that perfectly compensates magnetization transfer effects. lnflowing arterial
More informationSimultaneous Multi-Slice (Slice Accelerated) Diffusion EPI
Simultaneous Multi-Slice (Slice Accelerated) Diffusion EPI Val M. Runge, MD Institute for Diagnostic and Interventional Radiology Clinics for Neuroradiology and Nuclear Medicine University Hospital Zurich
More informationCardiac MR. Dr John Ridgway. Leeds Teaching Hospitals NHS Trust, UK
Cardiac MR Dr John Ridgway Leeds Teaching Hospitals NHS Trust, UK Cardiac MR Physics for clinicians: Part I Journal of Cardiovascular Magnetic Resonance 2010, 12:71 http://jcmr-online.com/content/12/1/71
More informationBOLD fmri: signal source, data acquisition, and interpretation
BOLD fmri: signal source, data acquisition, and interpretation Cheryl Olman 4 th year student, Department of Neuroscience and Center for Magnetic Resonance Research Discussion series Week 1: Biological
More informationAdvanced MSK MRI Protocols at 3.0T. Garry E. Gold, M.D. Associate Professor Department of Radiology Stanford University
Advanced MSK MRI Protocols at 3.0T Garry E. Gold, M.D. Associate Professor Department of Radiology Stanford University Outline Why High Field for MSK? SNR and Relaxation Times Technical Issues Example
More informationPulse Sequences: Rapid Gradient Echo
Pulse Sequences: Rapid Gradient Echo M229 Advanced Topics in MRI Holden H. Wu, Ph.D. 2018.04.17 Department of Radiological Sciences David Geffen School of Medicine at UCLA Class Business Office hours -
More informationSlice profile optimization in arterial spin labeling using presaturation and optimized RF pulses
Magnetic Resonance Imaging 24 (2006) 1229 1240 Slice profile optimization in arterial spin labeling using presaturation and optimized RF pulses David Alberg Holm a,b, 4, Karam Sidaros a a Danish Research
More informationHETERONUCLEAR IMAGING. Topics to be Discussed:
HETERONUCLEAR IMAGING BioE-594 Advanced MRI By:- Rajitha Mullapudi 04/06/2006 Topics to be Discussed: What is heteronuclear imaging. Comparing the hardware of MRI and heteronuclear imaging. Clinical applications
More informationPulse Sequence Design and Image Procedures
Pulse Sequence Design and Image Procedures 1 Gregory L. Wheeler, BSRT(R)(MR) MRI Consultant 2 A pulse sequence is a timing diagram designed with a series of RF pulses, gradients switching, and signal readout
More informationPulse Sequence Design Made Easier
Pulse Sequence Design Made Easier Gregory L. Wheeler, BSRT(R)(MR) MRI Consultant gurumri@gmail.com 1 2 Pulse Sequences generally have the following characteristics: An RF line characterizing RF Pulse applications
More information3T Unlimited. ipat on MAGNETOM Allegra The Importance of ipat at 3T. medical
3T Unlimited ipat on MAGNETOM Allegra The Importance of ipat at 3T s medical ipat on MAGNETOM Allegra The Importance of ipat at 3T The rise of 3T MR imaging Ultra High Field MR (3T) has flourished during
More information1 Introduction. 2 The basic principles of NMR
1 Introduction Since 1977 when the first clinical MRI scanner was patented nuclear magnetic resonance imaging is increasingly being used for medical diagnosis and in scientific research and application
More informationEvaluation of 2D Imaging Schemes for Pulsed Arterial Spin Labeling of the Human Kidney Cortex
diagnostics Article Evaluation 2D Imaging Schemes Pulsed Arterial Spin Labeling Human Kidney Cortex Charlotte E. Buchanan, Eleanor F. Cox Susan T. Francis * ID Sir Peter Mansfield Imaging Centre, School
More informationHigh Field MRI: Technology, Applications, Safety, and Limitations
High Field MRI: Technology, Applications, Safety, and Limitations R. Jason Stafford, Ph.D. The University of Texas M. D. Anderson Cancer Center, Houston, TX Introduction The amount of available signal
More informationGradient Spoiling. Average balanced SSFP magnetization Reduce sensitivity to off-resonance. FFE, FISP, GRASS, GRE, FAST, Field Echo
Gradient Spoiling Average balanced SSFP magnetization Reduce sensitivity to off-resonance FFE, FISP, GRASS, GRE, FAST, Field Echo 1 Gradient-Spoiled Sequence (GRE, FFE, FISP, GRASS) RF TR G z G y G x Signal
More informationApplication Guide & Release Notes
Application Guide & Release Notes Inner-volume-imaging (IVI) EPI C2P Release 002a 1 September 2015 TMII Translational and Molecular Imaging Institute Conditions of Use This package is provided to support
More informationBackground (~EE369B)
Background (~EE369B) Magnetic Resonance Imaging D. Nishimura Overview of NMR Hardware Image formation and k-space Excitation k-space Signals and contrast Signal-to-Noise Ratio (SNR) Pulse Sequences 13
More informationACRIN 6686 / RTOG 0825
ACRIN 6686 (RTOG 0825) Advanced MRI Imaging Manual ACRIN 6686 / RTOG 0825 A phase III double blind placebo controlled trial of conventional chemoradiation and adjuvant temozolomide plus bevacizumab vs
More informationNIH Public Access Author Manuscript Magn Reson Med. Author manuscript; available in PMC 2009 December 1.
NIH Public Access Author Manuscript Published in final edited form as: Magn Reson Med. 2008 December ; 60(6): 1488 1497. doi:10.1002/mrm.21790. Continuous Flow Driven Inversion for Arterial Spin Labeling
More informationPrinciples of MRI EE225E / BIO265. Lecture 21. Instructor: Miki Lustig UC Berkeley, EECS. M. Lustig, EECS UC Berkeley
Principles of MRI Lecture 21 EE225E / BIO265 Instructor: Miki Lustig UC Berkeley, EECS Question What is the difference between the images? Answer Both T1-weighted spin-echo gradient-echo Lower SNR Meniscus
More information(N)MR Imaging. Lab Course Script. FMP PhD Autumn School. Location: C81, MRI Lab B0.03 (basement) Instructor: Leif Schröder. Date: November 3rd, 2010
(N)MR Imaging Lab Course Script FMP PhD Autumn School Location: C81, MRI Lab B0.03 (basement) Instructor: Leif Schröder Date: November 3rd, 2010 1 Purpose: Understanding the basic principles of MR imaging
More informationMRI Metal Artifact Reduction
MRI Metal Artifact Reduction PD Dr. med. Reto Sutter University Hospital Balgrist Zurich University of Zurich OUTLINE Is this Patient suitable for MR Imaging? Metal artifact reduction Is this Patient suitable
More informationSteady-state sequences: Spoiled and balanced methods
Steady-state sequences: Spoiled and balanced methods Karla L Miller, FMRIB Centre, University of Oxford What is steady-state imaging? In the context of MRI pulse sequences, the term steady state typically
More informationMR Basics: Module 6 Pulse Sequences
Module 6 Transcript For educational and institutional use. This transcript is licensed for noncommercial, educational inhouse or online educational course use only in educational and corporate institutions.
More informationFunctional MRI with variable echo time acquisition
NeuroImage 20 (2003) 2062 2070 www.elsevier.com/locate/ynimg Functional MRI with variable echo time acquisition Nan-kuei Chen, Svetlana Egorova, Charles R.G. Guttmann, and Lawrence P. Panych* Center for
More informationThe promise of high-field MRI. High Field MRI Technology, Applications, Safety, and Limitations. High-field Scanners
High Field MRI Technology, Applications, Safety, and Limitations R. Jason Stafford, Ph.D. Department of Imaging Physics The University of Texas M. D. Anderson Cancer Center Houston, TX The promise of high-field
More informationLab 8 6.S02 Spring 2013 MRI Projection Imaging
1. Spin Echos 1.1 Find f0, TX amplitudes, and shim settings In order to acquire spin echos, we first need to find the appropriate scanner settings using the FID GUI. This was all done last week, but these
More information2015 Spin echoes and projection imaging
1. Spin Echoes 1.1 Find f0, transmit amplitudes, and shim settings In order to acquire spin echoes, we first need to find the appropriate scanner settings using the FID GUI. This was all done last week,
More informationPage 1 of 9. Protocol: adult_other_adni3_study_human_ge_3t_25w_ _ _1. 3 Plane Localizer. 3 Plane Localizer PATIENT POSITION
3 Localizer FOV 26.0 Slice Thickness 5.0 Slice Spacing 0.0 Freq 256 Phase 128 3-PLANE 3 Localizer Unswap Phase Correction Gradient Echo Imaging Options Seq, Fast Recon All Images Contrast Yes/ 3 Localizer
More informationMR Advance Techniques. Flow Phenomena. Class II
MR Advance Techniques Flow Phenomena Class II Flow Phenomena In this class we will explore different phenomenona produced from nuclei that move during the acquisition of data. Flowing nuclei exhibit different
More informationH 2 O and fat imaging
H 2 O and fat imaging Xu Feng Outline Introduction benefit from the separation of water and fat imaging Chemical Shift definition of chemical shift origin of chemical shift equations of chemical shift
More informationDownloaded from by on 02/07/18 from IP address Copyright ARRS. For personal use only; all rights reserved
Downloaded from www.ajronline.org by 46.3.192.5 on 02/07/18 from IP address 46.3.192.5. Copyright RRS. For personal use only; all rights reserved C oil sensitivity encoding (SENSE) is a new technique that
More informationEfficiency of Background Suppression for Arterial Spin Labeling. Dairon Garcia
Efficiency of Background Suppression for Arterial Spin Labeling by Dairon Garcia Submitted to the Department of Electrical Engineering and Computer Science in partial fulfillment of the requirements for
More informationNIH Public Access Author Manuscript Magn Reson Med. Author manuscript; available in PMC 2014 May 16.
NIH Public Access Author Manuscript Published in final edited form as: Magn Reson Med. 2011 July ; 66(1): 168 173. doi:10.1002/mrm.22768. 3D GRASE PROPELLER: Improved Image Acquisition Technique for Arterial
More informationCover Page. The handle holds various files of this Leiden University dissertation
Cover Page The handle http://hdl.handle.net/1887/49562 holds various files of this Leiden University dissertation Author: Schmid, Sophie Title: Arterial spin labeling in space and time : new MRI sequences
More informationAutomatic Selection of Mask and Arterial Phase Images for Temporally-Resolved MR Digital Subtraction Angiography
Automatic Selection of Mask and Arterial Phase Images for Temporally-Resolved MR Digital Subtraction Angiography 21 May 2002, ISMRM 2002 Junhwan Kim, Martin R. Prince, Ramin Zabih,, Jeff Bezanson, Richard
More informationDiffusion and Functional MRI of the Spinal Cord Methods and Clinical Applications
Diffusion and Functional MRI of the Spinal Cord Methods and Clinical Applications Susceptibility artifacts in DTI of the spinal cord J. Cohen-Adad Q-space imaging and axon diameter measurements Functional
More informationModule 2. Artefacts and Imaging Optimisation for single shot methods. Content: Introduction. Phase error. Phase bandwidth. Chemical shift review
MRES 7005 - Fast Imaging Techniques Module 2 Artefacts and Imaging Optimisation for single shot methods Content: Introduction Phase error Phase bandwidth Chemical shift review Chemical shift in pixels
More informationMR Basics: Module 8 Image Quality
Module 8 Transcript For educational and institutional use. This transcript is licensed for noncommercial, educational inhouse or online educational course use only in educational and corporate institutions.
More informationM R I Physics Course. Jerry Allison Ph.D., Chris Wright B.S., Tom Lavin B.S., Nathan Yanasak Ph.D. Department of Radiology Medical College of Georgia
M R I Physics Course Jerry Allison Ph.D., Chris Wright B.S., Tom Lavin B.S., Nathan Yanasak Ph.D. Department of Radiology Medical College of Georgia M R I Physics Course Magnetic Resonance Imaging Spatial
More informationSNR and functional sensitivity of BOLD and perfusion-based fmri using arterial spin labeling with spiral SENSE at 3 T
Available online at www.sciencedirect.com Magnetic Resonance Imaging 26 (2008) 513 522 SNR and functional sensitivity of BOLD and perfusion-based fmri using arterial spin labeling with spiral SENSE at
More informationMRI Summer Course Lab 2: Gradient Echo T1 & T2* Curves
MRI Summer Course Lab 2: Gradient Echo T1 & T2* Curves Experiment 1 Goal: Examine the effect caused by changing flip angle on image contrast in a simple gradient echo sequence and derive T1-curves. Image
More informationMulti-Slice Perfusion-Based Functional MRI using the FAIR Technique: Comparison of CBF and BOLD effects
NMR IN BIOMEDICINE, VOL. 10, 191 196 (1997) Multi-Slice Perfusion-Based Functional MRI using the FAIR Technique: Comparison of CBF and BOLD effects Seong-Gi Kim, 1 Nikolaos V. Tsekos 1 and James Ashe 2
More informationSpiral MRI on a 9.4T Vertical-bore Superconducting Magnet Using Unshielded and Self-shielded Gradient Coils
Magn Reson Med Sci doi:10.2463/mrms.tn.2016-0049 Published Online: March 27, 2017 TECHNICAL NOTE Spiral MRI on a 9.4T Vertical-bore Superconducting Magnet Using Unshielded and Self-shielded Gradient Coils
More information25 CP Generalize Concepts in Abstract Multi-dimensional Image Model Component Semantics Page 1
25 CP-1390 - Generalize Concepts in Abstract Multi-dimensional Image Model Component Semantics Page 1 1 STATUS Letter Ballot 2 Date of Last Update 2014/09/08 3 Person Assigned David Clunie 4 mailto:dclunie@dclunie.com
More information2014 M.S. Cohen all rights reserved
2014 M.S. Cohen all rights reserved mscohen@g.ucla.edu IMAGE QUALITY / ARTIFACTS SYRINGOMYELIA Source http://gait.aidi.udel.edu/res695/homepage/pd_ortho/educate/clincase/syrsco.htm Surgery is usually recommended
More informationISSN X CODEN (USA): PCHHAX. The role of dual spin echo in increasing resolution in diffusion weighted imaging of brain
Available online at www.derpharmachemica.com ISSN 0975-413X CODEN (USA): PCHHAX Der Pharma Chemica, 2016, 8(17):15-20 (http://derpharmachemica.com/archive.html) The role of in increasing resolution in
More informationRAD 229: MRI Signals and Sequences
RAD 229: MRI Signals and Sequences Brian Hargreaves All notes are on the course website web.stanford.edu/class/rad229 Course Goals Develop Intuition Understand MRI signals Exposure to numerous MRI sequences
More informationNIH Public Access Author Manuscript Int J Cardiovasc Imaging. Author manuscript; available in PMC 2008 May 26.
NIH Public Access Author Manuscript Published in final edited form as: Int J Cardiovasc Imaging. 2001 August ; 17(4): 287 296. A comparison of prospective and retrospective respiratory navigator gating
More informationImaging the brain at ultra-high resolution using 3D FatNavs
Imaging the brain at ultra-high resolution using 3D FatNavs Daniel Gallichan Centre d Imagerie BioMédicale EPFL, Lausanne, Switzerland Overview Introduction How motion affects MRI scans Ways we can track
More informationApplications Guide. Spectral Editing with SVS. (Works-in-Progress) MAGNETOM TaTs and Verio Systems (3T)
Applications Guide Spectral Editing with SVS (Works-in-Progress) MAGNETOM TaTs and Verio Systems (3T) syngo MR Numaris 4 VB17A June 2009 Version 1.1 WIP #529 Important Note This document provides a description
More informationMagnetic Resonance Imaging Principles, Methods, and Techniques
Magnetic Resonance Imaging Principles, Methods, and Techniques Perry Sprawls Jr., Emory University Publisher: Medical Physics Publishing Corporation Publication Place: Madison, Wisconsin Publication Date:
More informationMARP. MR Accreditation Program Quality Control Beyond Just the Scans and Measurements July 2005
ACR MRI accreditation program MR Accreditation Program Quality Control Beyond Just the Scans and Measurements July 2005 Carl R. Keener, Ph.D., DABMP, DABR keener@marpinc.com MARP Medical & Radiation Physics,
More informationMagnetic Resonance Imaging
Magnetic Resonance Imaging Principles, Methods, and Techniques Perry Sprawls, Ph.D., FACR, FAAPM, FIOMP Distinguished Emeritus Professor Department of Radiology Emory University Atlanta, Georgia Medical
More informationSteady-state MRI: methods for neuroimaging
REVIEW For reprint orders, please contact: reprints@futuremedicine.com Steady-state MRI: methods for neuroimaging MRI pulse sequences that use regularly spaced trains of rapidly applied excitation pulses
More informationHigh-Resolution, Spin-Echo BOLD, and CBF fmri at 4and7T
Magnetic Resonance in Medicine 48:589 593 (2002) High-Resolution, Spin-Echo BOLD, and CBF fmri at 4and7T Timothy Q. Duong,* Essa Yacoub, Gregory Adriany, Xiaoping Hu, Kamil Ugurbil, J. Thomas Vaughan,
More informationSIGNA Explorer Lift revives our MR
Seiji Shiotani, MD, PhD Seirei Fuji Hospital in Fuji City, Shizuoka, Japan Masayoshi Sugimura Seirei Fuji Hospital in Fuji City, Shizuoka, Japan SIGN Explorer Lift revives our MR The clinical usefulness
More informationVariable-Rate Selective Excitation for Rapid MRI Sequences
Variable-Rate Selective Excitation for Rapid MRI Sequences Brian A. Hargreaves,* Charles H. Cunningham, Dwight G. Nishimura, and Steven M. Conolly Magnetic Resonance in Medicine 52:590 597 (2004) Balanced
More informationIMPROVING THE ROBUSTNESS OF PERFUSION IMAGING WITH ARTERIAL SPIN LABELING MAGNETIC RESONANCE IMAGING HUAN TAN
IMPROVING THE ROBUSTNESS OF PERFUSION IMAGING WITH ARTERIAL SPIN LABELING MAGNETIC RESONANCE IMAGING BY HUAN TAN A Dissertation Submitted to the Graduate Faculty of WAKE FOREST UNIVERSITY GRADUATE SCHOOL
More informationThe ACR magnetic resonance accreditation phantom (ACR MRAP) has been designed to examine a broad range of instrument parameters.
OVERVIEW OF THE ACR MRI ACCREDITATION PHANTOM Geoffrey D. Clarke, Ph.D. University of Texas Southwestern Medical Center at Dallas email: GEOFFREY.CLARKE@MAIL.SWMED.EDU INTRODUCTION The ACR magnetic resonance
More informationEncoding of inductively measured k-space trajectories in MR raw data
Downloaded from orbit.dtu.dk on: Apr 10, 2018 Encoding of inductively measured k-space trajectories in MR raw data Pedersen, Jan Ole; Hanson, Christian G.; Xue, Rong; Hanson, Lars G. Publication date:
More informationImage Quality/Artifacts Frequency (MHz)
The Larmor Relation 84 Image Quality/Artifacts (MHz) 42 ω = γ X B = 2πf 84 0.0 1.0 2.0 Magnetic Field (Tesla) 1 A 1D Image Magnetic Field Gradients Magnet Field Strength Field Strength / Gradient Coil
More informationThe SENSE Ghost: Field-of-View Restrictions for SENSE Imaging
JOURNAL OF MAGNETIC RESONANCE IMAGING 20:1046 1051 (2004) Technical Note The SENSE Ghost: Field-of-View Restrictions for SENSE Imaging James W. Goldfarb, PhD* Purpose: To describe a known (but undocumented)
More informationHigh-Field Surface-Coil MR Imaging of Localized Anatomy
181 High-Field Surface-Coil MR Imaging of Localized Anatomy John F. Schenck,' Thomas H. Foster,' John l. Henkes,' William J. Adams,' Cecil Hayes,2 Howard R. Hart, Jr.,' William A. Edelstein,' Paul A. Bottomley,'
More informationCME. Rapid Gradient-Echo Imaging. Review. Brian A. Hargreaves, PhD*
CME JOURNAL OF MAGNETIC RESONANCE IMAGING 36:1300 1313 (2012) Review Rapid Gradient-Echo Imaging Brian A. Hargreaves, PhD* Gradient-echo sequences are widely used in magnetic resonance imaging (MRI) for
More informationMRI physics for SPM users
MRI physics for SPM users SPM course 11/2013 Antoine Lutti antoine.lutti@chuv.ch General principals Origin of the signal RF excitation Relaxation (T1, T2, ) Anatomical imaging Image contrast Outline Standard
More informationTimTX TrueShape. The parallel transmit architecture of the future. Answers for life.
www.siemens.com/trueshape TimTX TrueShape The parallel transmit architecture of the future. The product/feature (mentioned herein) is not commercially available. Due to regulatory reasons its future availability
More informationNIH Public Access Author Manuscript Magn Reson Med. Author manuscript; available in PMC 2010 July 21.
NIH Public Access Author Manuscript Published in final edited form as: Magn Reson Med. 2010 April ; 63(4): 1092 1097. doi:10.1002/mrm.22223. Spatially Varying Fat-Water Excitation Using Short 2DRF Pulses
More informationPersonal Information. Contact information. Education / Training. Position
Curriculum Vitae Personal Information Name Current Position Title Wanyong Shin Research Assistant (Ph.D candidate) Contact information Address 676 N. St. Clair 1400A, Chicago, IL, 60611 Phone Work: (312)
More informationSIEMENS MAGNETOM Skyra syngo MR D13
Page 1 of 12 SIEMENS MAGNETOM Skyra syngo MR D13 \\USER\CIND\StudyProtocols\PTSA\*ep2d_M0Map_p2_TE15 TA:7.9 s PAT:2 Voxel size:2.5 2.5 3.0 mm Rel. SNR:1.00 :epfid Properties Routine Contrast Prio Recon
More informationSystem/Imaging Imperfections
System/Imaging Imperfections B0 variations: Shim, Susceptibility B1 variations: Transmit, Receive Gradient Imperfections: Non-linearities Delays and Eddy currents Concomitant terms 1 B0 Variations - Off-Resonance
More information(12) Patent Application Publication (10) Pub. No.: US 2016/ A1
(19) United States (12) Patent Application Publication (10) Pub. No.: US 2016/0203603 A1 Li et al. US 2016O203603A1 (43) Pub. Date: Jul. 14, 2016 (54) (71) (72) (21) (22) (60) (51) TIME EFFICIENT ASL.
More informationResearch Article Implementation and Application of PSF-Based EPI Distortion Correction to High Field Animal Imaging
Hindawi Publishing Corporation International Journal of Biomedical Imaging Volume 2009, Article ID 946271, 7 pages doi:10.1155/2009/946271 Research Article Implementation and Application of PSF-Based EPI
More informationMRI AT HIGH MAGNETIC FIELDS. Kâmil Uğurbil. University of Minnesota
MRI AT HIGH MAGNETIC FIELDS Kâmil Uğurbil University of Minnesota CENTER for MAGNETIC RESONANCE RESEARCH (CMRR) Blood Vessel Distribution in Rat Brain brain slice (ink injection) Venous structure: T 2
More informationEcho-Planar Imaging for a 9.4 Tesla Vertical-Bore Superconducting Magnet Using an Unshielded Gradient Coil
Magn Reson Med Sci, Vol. XX, No. X, pp. XXX XXX, 2015 2016 Japanese Society for Magnetic Resonance in Medicine TECHNICAL NOTE by J-STAGE doi:10.2463/mrms.tn.2015-0123 Echo-Planar Imaging for a 9.4 Tesla
More informationA. SPECIFIC AIMS: phase graph (EPG) algorithms to cover a wide range of MRI
A. SPECIFIC AIMS: A.. Overview: The promise of improved MRI results at high field strength is compromised by the difficulties encountered at high field, including: i) Non-uniform excitation, due to the
More informationMethods. Experimental Stimuli: We selected 24 animals, 24 tools, and 24
Methods Experimental Stimuli: We selected 24 animals, 24 tools, and 24 nonmanipulable object concepts following the criteria described in a previous study. For each item, a black and white grayscale photo
More informationLiver imaging beyond expectations with Ingenia
Publication for the Philips MRI Community Issue 47 2012/3 Liver imaging beyond expectations with Ingenia Contributed by John Penatzer, RT, MR clinical product specialist, Cleveland, OH, USA Publication
More informationQuantitative Measurements of Proton Spin-Lattice (T 1 ) and Spin Spin (T 2 ) Relaxation Times in the Mouse Brain at 7.0 T
Magnetic Resonance in Medicine 49:576 580 (2003) Quantitative Measurements of Proton Spin-Lattice (T 1 ) and Spin Spin (T 2 ) Relaxation Times in the Mouse Brain at 7.0 T David N. Guilfoyle, 1 * Victor
More informationEvaluation of a Subject specific dual-transmit approach for improving B 1 field homogeneity in cardiovascular magnetic resonance at 3T
Krishnamurthy et al. Journal of Cardiovascular Magnetic Resonance 2013, 15:68 RESEARCH Open Access Evaluation of a Subject specific dual-transmit approach for improving B 1 field homogeneity in cardiovascular
More informationChallenges of Field Inhomogeneities and a Method for Compensation. Angela Lynn Styczynski Snyder. Michael Garwood, Ph.D., Adviser
Challenges of Field Inhomogeneities and a Method for Compensation A DISSERTATION SUBMITTED TO THE FACULTY OF THE GRADUATE SCHOOL OF THE UNIVERSITY OF MINNESOTA BY Angela Lynn Styczynski Snyder IN PARTIAL
More informationPassive Tracking Exploiting Local Signal Conservation: The White Marker Phenomenon
Passive Tracking Exploiting Local Signal Conservation: The White Marker Phenomenon Jan-Henry Seppenwoolde,* Max A. Viergever, and Chris J.G. Bakker Magnetic Resonance in Medicine 50:784 790 (2003) This
More informationSupplementary Material
Supplementary Material Orthogonal representation of sound dimensions in the primate midbrain Simon Baumann, Timothy D. Griffiths, Li Sun, Christopher I. Petkov, Alex Thiele & Adrian Rees Methods: Animals
More informationUltrafast Imaging: Principles, Pitfalls, Solutions, and Applications
JOURNAL OF MAGNETIC RESONANCE IMAGING 32:252 266 (2010) Review Ultrafast Imaging: Principles, Pitfalls, Solutions, and Applications Jeffrey Tsao, PhD* Ultrafast MRI refers to efficient scan techniques
More informationStudy of the HD target spin rotations during G14
Study of the HD target spin rotations during G14 A. Deur, deurpam@jlab.org April 18, 2013 1 Introduction During the G14 run, the target spin was reversed using either magnetic field rotations or RF spin
More informationSaturated Double-Angle Method for Rapid B 1 Mapping
Saturated Double-Angle Method for Rapid B 1 Mapping Charles H. Cunningham, 1 John M. Pauly, 1 and Krishna S. Nayak 2 * Magnetic Resonance in Medicine 55:1326 1333 (2006) For in vivo magnetic resonance
More informationImproving high-field MRI using parallel excitation
review Improving high-field MRI using parallel excitation MRI at high magnetic field strengths promises to deliver clearer images of the body s structure and function. However, high-field MRI currently
More informationHalf-Pulse Excitation Pulse Design and the Artifact Evaluation
Half-Pulse Excitation Pulse Design and the Artifact Evaluation Phillip Cho. INRODUCION A conventional excitation scheme consists of a slice-selective RF excitation followed by a gradient-refocusing interval
More informationSelective Arterial Spin Labeling (SASL): Perfusion Territory Mapping of Selected Feeding Arteries Tagged Using Two-Dimensional Radiofrequency Pulses
Selective Arterial Spin Labeling (SASL): Perfusion Territory Mapping of Selected Feeding Arteries Tagged Using Two-Dimensional Radiofrequency Pulses Nigel P. Davies* and Peter Jezzard Magnetic Resonance
More informationfunctional MRI: A primer
Activation Leads to: functional MRI: A primer CBF Increased +ΔR CBV Increased +ΔR (C+) O Utilization Increased slightly? Venous [O ] Increased -ΔR* Glucose Utilization Increased? Lactate BOLD R=/T R=/T
More informationResearch Support. Dual-Source CT: What is it and How Do I Test it? Cynthia H. McCollough, Ph.D.
Dual-Source CT: What is it and How Do I Test it? Cynthia H. McCollough, Ph.D. CT Clinical Innovation Center Department of Radiology Mayo Clinic College of Medicine Rochester, MN Research Support National
More informationClear delineation of optic radiation and very small vessels using phase difference enhanced imaging (PADRE)
Clear delineation of optic radiation and very small vessels using phase difference enhanced imaging (PADRE) Poster No.: C-2459 Congress: ECR 2010 Type: Scientific Exhibit Topic: Neuro Authors: T. Yoneda,
More informationSYLLABUS. 1. Identification of Subject:
SYLLABUS Date/ Revision : 30 January 2017/1 Faculty : Life Sciences Approval : Dean, Faculty of Life Sciences SUBJECT : Biophysics 1. Identification of Subject: Name of Subject : Biophysics Code of Subject
More information6.S02 MRI Lab Acquire MR signals. 2.1 Free Induction decay (FID)
6.S02 MRI Lab 1 2. Acquire MR signals Connecting to the scanner Connect to VMware on the Lab Macs. Download and extract the following zip file in the MRI Lab dropbox folder: https://www.dropbox.com/s/ga8ga4a0sxwe62e/mit_download.zip
More informationMR in Tx Planning. Acknowledgements. Outline. Overview MR in RTP
MR Data for Treatment Planning and Stereotactic Procedures: Sources of Distortion, Protocol Optimization, and Assessment (Preview of TG117 Report) Debra H. Brinkmann Mayo Clinic, Rochester MN Acknowledgements
More informationMR in RTP. MR Data for Treatment Planning: Spatial Accuracy Issues, Protocol Optimization, and Applications (Preview of TG117 Report) Acknowledgements
MR Data for Treatment Planning: Issues, Protocol Optimization, and s (Preview of TG117 Report) Debra H. Brinkmann Mayo Clinic, Rochester MN Acknowledgements TG-117 Use of MRI Data in Treatment Planning
More informationThe Enlightened Choice for High-field MRI
The Enlightened Choice for High-field MRI ECHELON heralds the dawn of a new standard for 1.5T superconductive MRI. The ECHELON features a small footprint with economics that do not compromise diagnostic
More information