Advanced MSK MRI Protocols at 3.0T. Garry E. Gold, M.D. Associate Professor Department of Radiology Stanford University
|
|
|
- Lionel Cook
- 6 years ago
- Views:
Transcription
1 Advanced MSK MRI Protocols at 3.0T Garry E. Gold, M.D. Associate Professor Department of Radiology Stanford University
2 Outline Why High Field for MSK? SNR and Relaxation Times Technical Issues Example protocols New applications
3 MSK MR Imaging Small structures ( cm) High resolution (< 0.5 mm) Limited motion Excellent contrast required
4 Rapid Knee Protocol
5 SNR Comparison 1.5T 3.0T Axial PD: SNR Ratio = 1.77
6 SNR Comparison 1.5T 3.0T Sagittal PD: SNR Ratio = 1.81
7 Chemical Shift Artifact BW + 16 khz BW + 64 khz
8 Chemical Shift and Bandwidth Bad News Chemical shift doubles at 3.0T compared with 1.5T Doubling the bandwidth: loss of 2 SNR Good News Doubling the bandwidth corrects chemical shift Higher bandwidth: - more slices - shorter echo times - shorter echo spacing - less metal artifact
9 Vascular Artifacts Sagittal T2 FSE with Fat Sat With flow compensation and S/I sat bands Frequency S/I
10 RF Power Deposition T1 SE: 4 min T1 FSE: 2 min Less RF Power, faster
11 RF Power Considerations Bad News RF power increases at 3.0T - T 1 SE and FSE are high power sequences Body coil transmit (high power) for pelvis and spine may limit some applications Good News Most joints are small in volume - limits power deposition (T/R coils) Lowering flip angle of refocusing pulses in FSE can decrease RF power, at the cost of some SNR
12 Fat Suppression at 3.0T Bad News More difficult at 3.0T due to field inhomogeneity Good News Fat sat pulses are shorter at 3.0T (shift of 440 Hz) Shorter sat pulses: -more slices per TR -faster SPGR imaging
13 Brachial Plexus: IDEAL Fat-Sat FSE IDEAL FSE
14 Rapid Knee Protocol Use: Routine knee imaging Goal: Keep imaging time to a minimum while having acceptable quality Possible to scan a knee in 15 min with table turn around
15 Rapid Knee Protocol Axial PD FSE TR/TE = 5000/35 Fat saturation 4.0 / 1.0 mm 320x224, 1 nex 14 cm FOV 26 slices ETL = 8 32 khz BW ARC 1.8
16 Rapid Knee Protocol Coronal T1 FSE TR/TE = 1000/20 No Fat saturation 4/1 mm 384x224, 1 nex 16 cm FOV 18 slices ETL = 4 32 khz BW ARC 1.8
17 Rapid Knee Protocol Coronal T2 FSE TR/TE = 4000/54 Fat saturation 4/1 mm 320x224, 1 nex 16 cm FOV 22 slices ETL = 8 32 khz BW ARC 1.8
18 Rapid Knee Protocol Sagittal PD FSE TR/TE = 5000/35 No fat saturation 3.0/0.5 mm 384x224, 1 nex 14 cm FOV 30 slices ETL = 8 32 khz BW ARC - none
19 Rapid Knee Protocol Sagittal T2 FSE TR/TE = 6400/60 No fat saturation 3.0/0.5 mm 320x224, 1 nex 14 cm FOV 30 slices ETL = khz BW Flow Comp, SI Sat
20 Scan Time Comparison Sequence 1.5T (nex) 3.0T (nex) Axial PD 3:10 (2) 1:25 (1) Cor T1 5:10 (2) 1:43 (1) Cor T2 3:10 (2) 2:24 (1) Sag PD 4:16 (2) 2:30 (1) Sag T2 4:48 (3) 2:40 (1) Total 20:34 10:42
21 3.0T: Resolution Advantage
22 High Resolution Knee Protocol Use: High quality knee imaging Goal: Keep imaging time to about min while having outstanding quality Possible to scan a knee in 45 min with table turn around 8 channel knee coil
23 High Resolution Knee Protocol Axial PD FSE TR/TE = 5000/20 Fat saturation 2.5/0.5mm 416 x averages 14 cm FOV 26 slices ETL = 8 32 khz BW
24 High Resolution Knee Protocol Coronal T1 FSE TR/TE = 1000/15 No Fat saturation 2.5/0.5 mm 416 x averages 14 cm FOV 18 slices ETL = 3 41 khz BW
25 High Resolution Knee Protocol Coronal T2 FSE TR/TE = 5000/60 Fat saturation 2.5/0.5 mm 416 x averages 14 cm FOV 22 slices ETL = 8 32 khz BW
26 High Resolution Knee Protocol Sagittal PD FSE TR/TE = 5000/15 No fat saturation 2.5/0.5 mm 512 x averages 16 cm FOV 30 slices ETL = 8 41 khz BW
27 High Resolution Knee Protocol Sagittal T2 FSE TR/TE = 5000/54 Fat saturation 2.5/0.5 mm 384 x averages 16 cm FOV 30 slices ETL = 8 32 khz BW Flow Comp, S Sat
28 High Resolution Knee Protocol Coronal 3D FSE TR/TE = 3000/35 Fat saturation 0.6 mm slices 288 x averages 17 cm FOV 200 slices ETL = khz BW Reformat at 2 mm slices
29 High Resolution Scan Time Comparison Sequence 1.5T (slice, mm) 3.0T (slice, mm) Axial PD 3:10 (4) 6:00 (2.5) Cor T1 5:10 (4) 3:30 (2.5) Cor T2 3:10 (4) 6:00 (2.5) Sag PD 4:16 (3) 5:00 (2.5) Sag T2 4:48 (3.5) 5:00 (2.5) Cor 3D FSE x 5:00 (0.6) Total 20:34 30:30
30 Ankle at 3.0T T1 FSE T2 FSE Fat Sat 512x320, BW 41 khz, ETL = 3 416x224, BW 31 khz, ETL = mm thick slices, 8-channel ankle coil
31 Elbow at 3.0T T1 FSE T2 FSE Fat Sat 512x320, BW 41 khz, ETL = 3 416x224, BW 31 khz, ETL = mm thick slices, 8-channel knee coil
32 Dedicated 3T Wrist Coil 2 mm slices, 200 micron in-plane resolution Use: MDCT Repetitive strain injuries
33 Cor T2 FS T2 Ideal 3T Adductor Strain
34 Shoulder at 3.0T 2 mm thick slices
35 ute Imaging: 3D Cones TE = 0.1 ms TE = 4.6 ms 3.0T ute Cones Log subtraction
36 Take-Home Points Use dedicated RF coils Increased T1: Decrease averages Increase TR Decrease slice thickness Keep BW > +/-32 khz on sequences without fat saturation Consider T1 FSE (short ETL) to reduce SAR
Page 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
MRI 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
Pulse 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
MARP. 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,
Delivering Better Patient Care with SIGNA Architect
Delivering etter Patient Care with SIGNA Architect As a regional leader in outpatient-based diagnostic imaging, the radiologists and staff at Inova Fairfax MRI Center are focused on one thing: the patient.
MRI 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
Background (~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
Pulse 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
SIEMENS 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
Cardiac 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
Philips Site Yearly Performance Evaluation Philips Openview 16-Jan-08. Table of Contents
Philips Site Yearly Performance Evaluation Philips Openview 6-Jan-8 Table of Contents Summary and Signature Page 2 Specific Comments 3 Site Information 4 Equipment Information 4 Table Position Accuracy
(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
MR 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.
MR 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
Principles 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
CARING DESIGN. PRACTICAL TECHNOLOGY.
GE Healthcare CARING DESIGN. PRACTICAL TECHNOLOGY. Brivo * MR355 1.5T Inspire ITS ELEGANT DESIGN AND WARM LIGHT ARE INTRIGUING. Brivo MR355 Inspire product manager Every piece of equipment you own represents
MR 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
MR 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.
Compact yet Sophisticated
Compact yet Sophisticated Hitachi has brought Open MRI one step further in its evolution, to better assist medical professionals who work at the forefront of healthcare. AIRIS Light MSK offers radiologists
Gradient 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
Works-in-Progress package Version 1.0. For the SIEMENS Magnetom. Installation and User s Guide NUMARIS/4VA21B. January 22, 2003
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,
TimTX 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
3T 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
Liver 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
MR 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
Module 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
ACRIN 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
H 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
MRI Anatomy and Positioning Series Module 12: Fat Suppression Techniques
MRI Anatomy and Positioning Series Module 12: Fat Suppression Techniques 1 Introduction... 3 RF FatSat... 4 HOAST... 4 FatSat... 5 Segment FS... 8 PhaseCycle... 9 Water Excitation... 10 STIR... 12 FatSep...
2015 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,
HETERONUCLEAR 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
2014 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
RAD 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
System/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
High 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
1.5T HIGH FIELD SMALL ANIMAL MRI
1.5T HIGH FIELD SMALL ANIMAL MRI Designed Specifically for Veterinarians TECHNICAL GUIDE ADVANCING THE ART AND SCIENCE OF VETERINARY MRI The PetVet is the only high-field MRI system designed specifically
Diff Ganzkörper ep2d_diff_stir_b50_800_tra
Table of contents \\USER Ganzkörper clinical Diff Ganzkörper ep2d_diff_stir_b50_800_tra - 1 - \\USER\Ganzkörper\clinical\Diff Ganzkörper\ep2d_diff_stir_b50_800_tra TA: 2:23 PM: ISO Voxel size: 1.6 1.6
ISSN 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
BACKGROUND. ** 78% of all MRI scanners have Image Quality problems. *** *** 25% of all Multi-Channel RF coils have at least one bad channel.
Range of Results from over 534 ACR-mandated Annual MRI Performance Evaluations on over 204 Magnets from 8 Vendors Spanning a 10-year Period Moriel NessAiver, Ph.D. - Simply Physics - Baltimore, MD moriel@simplyphysics.com
MRI Systems and Coil Technology
MRI for Technologists MRI Systems and Coil Technology PROGRAM INFORMATION MRI for Technologists is a training program designed to meet the needs of radiologic technologists entering or working in the field
GE Healthcare. Discovery MR T. Simply powerful. Powerfully simple.
GE Healthcare Discovery MR750 3.0T Simply powerful. Powerfully simple. Break free. The breast images you need in only two sequences. A complete liver study in a 15-minute time slot. Routine fmri with shorter
SIGNA 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
Image 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
EE225E/BIOE265 Spring 2014 Principles of MRI. Assignment 6. Due Friday March 7th, 2014, Self Grading Due Monday March 10th, 2014
EE225E/BIOE265 Spring 2014 Principles of MRI Miki Lustig 1. Read Nishimura Ch. 6 Assignment 6 Due Friday March 7th, 2014, Self Grading Due Monday March 10th, 2014 2. Nishimura assignment 6.5 3. Mimimum-Phase
Radio Frequency Field
Radio Frequency Field Radio Frequency Coils and RF Power Distribution RF Coil Maps Distribution of RF Power GE 750W RF maps courtesy of Tobias Gilk Siemens Prisma (courtesy Siemens) Radio Frequency Field
BOLD 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
Pitfalls and Remedies of MDCT Scanners as Quantitative Instruments
intensity m(e) m (/cm) 000 00 0 0. 0 50 0 50 Pitfalls and Remedies of MDCT Scanners as Jiang Hsieh, PhD GE Healthcare Technology University of Wisconsin-Madison Root-Causes of CT Number Inaccuracies Nature
Surpass the unimaginable and make it the expected.
GE Healthcare Surpass the unimaginable and make it the expected. SIGNA Artist Imagine what MR can be. Artist is not yet CE marked. May not be marketed or placed into service until made to comply with CE
SIGNA Architect. Make the unimaginable the expected. Issue Spotlight. Issue Spotlight
SIGNA Architect Make the unimaginable the expected The potential for MR is now even more astonishing. Introducing SIGNA Architect 3.0T, the most advanced and intuitive engineering in MR technology from
Pulse 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 -
SIGNA Pioneer: Ultra High Efficiency Gradient System Advancing the gradient technology curve
GE Healthcare SIGNA Pioneer: Ultra High Efficiency Gradient System Advancing the gradient technology curve NEW TECHNOLOGY 40W Watts spec is irrelevant. 4W LED bulb delivers same brightness as 40W incandescent
Lesson 06: Pulse-echo Imaging and Display Modes. These lessons contain 26 slides plus 15 multiple-choice questions.
Lesson 06: Pulse-echo Imaging and Display Modes These lessons contain 26 slides plus 15 multiple-choice questions. These lesson were derived from pages 26 through 32 in the textbook: ULTRASOUND IMAGING
k y 2k y,max k x 2k x,max
EE225E/BIOE265 Spring 2012 Principles of MRI Miki Lustig Assignment 5 Due Feb 26, 2012 1. Finish reading Nishimura Ch. 5. 2. For the 16 turn spiral trajectory, plotted below, what is the a) Spatial resolution,
GE Site Yearly Performance Evaluation GE Signa Excite HD - 3T 1-Sep-08. Table of Contents
GE Site Yearly Performance Evaluation GE Signa Excite HD T Sep8 Table of Contents Summary and Signature Page 2 Specific Comments Site Information 4 Equipment Information 4 Table Position ccuracy 4 Magnetic
Simultaneous 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
磁振影像學 MRI 磁振假影與磁振安全 磁振假影. 本週課程內容 Hardware-related Artifacts 盧家鋒助理教授 磁振假影 磁振安全
本週課程內容 http://www.ym.edu.tw/~cflu 磁振假影 磁振安全 磁振影像學 MRI 磁振假影與磁振安全 盧家鋒助理教授 國立陽明大學生物醫學影像暨放射科學系 alvin4016@ym.edu.tw MRI The Basics (3rd edition) Chapter 18: Artifacts in MRI MRI in Practice, (4th edition) Chapter
Improving 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
Designing Long-T 2 Suppression Pulses for Ultra-short Echo Time (UTE) Imaging
Designing Long-T 2 Suppression Pulses for Ultra-short Echo Time (UTE) Imaging Peder E.Z. Larson 1, Paul T. Gurney 1, Krishna Nayak 2 Garry E. Gold 3, John M. Pauly 1, Dwight G. Nishimura 1 1 Magnetic Resonance
Designing Long-T 2 Suppression Pulses for Ultrashort Echo Time Imaging
Magnetic Resonance in Medicine 56:94 103 (2006) Designing Long-T 2 Suppression Pulses for Ultrashort Echo Time Imaging Peder E. Z. Larson, 1 * Paul T. Gurney, 1 Krishna Nayak, 2 Garry E. Gold, 3 John M.
TOPICS: CT Protocol Optimization over the Range of Patient Age & Size and for Different CT Scanner Types: Recommendations & Misconceptions
CT Protocol Optimization over the Range of Patient Age & Size and for Different CT Scanner Types: Recommendations & Misconceptions TOPICS: Computed Tomography Quick Overview CT Dosimetry Effects of CT
WU-Minn HCP 1200 Subjects Release: Reference Manual
WU-Minn HCP 1200 Subjects Release: Reference Manual Appendix I Protocol Guidance and HCP Session Protocols 1 March 2017 1200 Subjects Reference Manual Appendix I WU-Minn Consortium of the NIH Human Connectome
Magnetic 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:
EE469B: Assignment 1 Solutions
EE469B Fall 26-7 RF Pulse Design for MRI EE469B: Assignment Solutions Due Thursday Oct 6 Introduction This assignment concerns typical Fourier transform designs of excitation pulses. This includes designing
EE225E/BIOE265 Spring 2012 Principles of MRI. Assignment 7. Due March 16, 2012
EE225E/BIOE265 Spring 2012 Principles of MRI Miki Lustig Assignment 7 Due March 16, 2012 1. From Midterm I 2010: You ve just programmed up your first 2DFT pulse sequence, and are trying it out on the scanner.
Magnetic 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
The 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
Development of a 1.0 T MR microscope using a Nd-Fe-B permanent magnet
Magnetic Resonance Imaging 19 (2001) 875 880 Development of a 1.0 T MR microscope using a Nd-Fe-B permanent magnet Tomoyuki Haishi, Takaaki Uematsu, Yoshimasa Matsuda, Katsumi Kose* Institute of Applied
SmartExam helps to banish most repeat knee studies at Desert Medical Imaging
I s s u e 3 2 - J u l y 2 0 0 7 F i e l d Strength Publication for the Philips MRI Community SmartExam helps to banish most repeat knee studies at Desert Medical Imaging Total scan automation boosts efficiency,
The 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
EE225E/BIOE265 Spring 2011 Principles of MRI. Assignment 6 Solutions. (y 0 + vt) dt. 2 y 0T + 3 )
EE225E/BIOE265 Spring 211 Principles of MRI Miki Lustig Handout Assignment 6 Solutions 1. Nishimura 6.7 (Thanks Galen!) a) After the 9 y pulse, the spin is in the ˆx direction (using left-handed rotations).
The 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)
Automatic 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
Half-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
American College of Radiology MR Accreditation Program. Testing Instructions
American College of Radiology MR Accreditation Program Testing Instructions (Revised May 28, 2017) This guide provides all of the instructions necessary for clinical tests, phantom tests and general submission
Application 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
MRI MRI REGISTRY REVIEW PHYSICAL PRINCIPLES OF IMAGE FORMATION ARTIFACTS SUPERCONDUCTIVE MAGNET ANAIBI MOLINA(R) (RT) (MR) (CT) T2 DEPHASING
MRI ANAIBI MOLINA(R) (RT) (MR) (CT) T2 DEPHASING SUPERCONDUCTIVE MAGNET FREE INDUCTION DECAY ARTIFACTS MRI REGISTRY REVIEW PHYSICAL PRINCIPLES OF IMAGE FORMATION Mri Registry Review Physical Principles
Downloaded 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
A. 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
Diffusion 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
Philips Site Yearly Performance Evaluation Philips Intera 1.5T 2-Mar-08. Table of Contents
Philips Site Yearly Performance Evaluation Philips Intera.5T 2Mar8 Table of Contents Summary and Signature Page 2 Specific Comments Site Information 4 Equipment Information 4 Table Position ccuracy 4 Magnetic
Lab 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
12/21/2016. Siemens Medical Systems Research Agreement Philips Healthcare Research Agreement AAN and ASN Committees
Joseph V. Fritz, PhD Nandor Pintor, MD Dent Neurologic Institute ASN 2017 Friday, January 20, 2017 Siemens Medical Systems Research Agreement Philips Healthcare Research Agreement AAN and ASN Committees
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
MRI Systems and Coil Technology
MRI for Technologists MRI Systems and Coil Technology PROGRAM INFORMATION MRI for Technologists is a training program designed to meet the needs of radiologic technologists entering or working in the field
Passive 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
Evaluation of MWT Materials Accusorb MRI Shield. Dr. E. Kanal, Department of Radiology, UPMC. Wednesday, April 21, 2010
Evaluation of MWT Materials Accusorb MRI Shield Dr. E. Kanal, Department of Radiology, UPMC Wednesday, April 21, 2010 Background: In almost all x-ray and ultrasonographic imaging examinations, in order
NIH 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
Annual Ceiling Amount: $
High Field Magnetic Resonance Imaging Center Research MRI Suite, Basement Floor of Building 203 VAMC 4150 Clement Street, San Francisco, CA 94121 MR STUDY APPLICATION for Research Users Application date:
Experience 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
Noninvasive 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,
Supplementary 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
functional 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
Publication for the Philips MRI Community
FieldStrength Publication for the Philips MRI Community Issue 38 Summer 2009 Hospitals deploy Panorama HFO as an all purpose MRI scanner Panorama High Field Open scanner serves all MRI needs of both Community
INSTRUCTIONS FOR THE CAROTID MRI COMPLETION FORM, CMR, Version B, 12/08/2005
INSTRUCTIONS FOR THE CAROTID MRI COMPLETION FORM, CMR, Version B, 12/08/2005 I. General Instructions: This form is used to document the conduct and completeness of the MRI examination. The MRI examination
Using Adiabatic Inversion Pulses for Long-T 2 Suppression in Ultra-short Echo Time (UTE) Imaging
Using Adiabatic Inversion Pulses for Long-T 2 Suppression in Ultra-short Echo Time (UTE) Imaging Peder E. Z. Larson 1, Steven M. Conolly 1,2, John M. Pauly 1, Dwight G. Nishimura 1 1 Magnetic Resonance
High-Resolution Ultrashort Echo Time (UTE) Imaging on Human Knee With AWSOS Sequence at 3.0 T
CME JOURNAL OF MAGNETIC RESONANCE IMAGING 35:204 210 (2012) Technical Note High-Resolution Ultrashort Echo Time (UTE) Imaging on Human Knee With AWSOS Sequence at 3.0 T Yongxian Qian, PhD, 1 * Ashley A.
Methods. 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
Digital Imaging CT & MR
Digital Imaging CT & MR January 22, 2008 Digital Radiography, CT and MRI generate images in a digital format What is a Digital Image? A digital image is made up of picture elements, pixels row by column
Photomultiplier Tube
Nuclear Medicine Uses a device known as a Gamma Camera. Also known as a Scintillation or Anger Camera. Detects the release of gamma rays from Radionuclide. The radionuclide can be injected, inhaled or
Hadamard Slice Encoding for Reduced-FOV Diffusion- Weighted Imaging
FULL PAPER Magnetic Resonance in Medicine 00:00 00 (2013) Hadamard Slice Encoding for Reduced-FOV Diffusion- Weighted Imaging Emine Ulku Saritas, 1,2,3 * Daeho Lee, 1 Tolga Çukur, 1,2,3 Ajit Shankaranarayanan,