University of Wisconsin–Madison

Scanner Comparisons

UW Hospital & Clinics


System Name UWMR2 UWMR3 UWMR4 UWMR5 UWMR6
Location E1/368
CSC
E1/344
CSC
F2/380E
CSC
E1/321
CSC
E3/E301
CSC
Phone Number 2-6073 2-6073 1-1734 3-8742 5-8836
System ID 608263
UMRH
608263
CARDMR
608263
MR4I
608263
MR5W
608263
MR6
Magnetic Field Strength 1.5 T 1.5 T 1.5 T 3 T 3 T
Scanner Type Signa
HDxt
Signa
HDxt
Optima
MR 450w
with GEM
Discovery
MR 750w
with GEM
Discovery
MR 750
Software Revision HD23 HD23 25.0 25.0 25.0
Gradient Type EchoSpeed TwinSpeed XRMw XRMw XRM
Gradient Strength (mT/m) 33 40-zoom
23-whole
33 33 50
Gradient Rise & Fall Time (µsec) 276 268-zoom
288-whole
275 275 248
Gradient Slew Rate (mT/m/msec) 120-EPI
77-non-EPI
150-zoom
77-whole
120 120 200
Number of Receivers 8 16 32 32 32
Multi-nuclear Capable No No No Yes No
Magnet Type S3 LCC n/a n/a n/a
Gradient Amplifiers 8917 8917 8920 8920 8920
Bore Diameter (cm) 60 60 70 70 60

AFCH

System Name AFCHMR1
Location 1132 AFCH
Phone Number 0-7121
System ID 608CHILDMR1
Magnetic Field Strength 3 T
Scanner Type Discovery MR 750w with GEM
Software Revision 25.0
Gradient Type XRMw
Gradient Strength (mT/m) 33
Gradient Rise & Fall Time (µsec) 275
Gradient Slew Rate (mT/m/msec) 120
Number of Receivers 32
Multi-nuclear Capable No
Magnet Type n/a
Gradient Amplifiers 8920
Bore Diameter (cm) 70

Research Park

System Name RPMR1 RPMR2 RPMR3
Location 2283
UW Sports Medicine
2410A
UW Sports Medicine
2434
UW Sports Medicine
Phone Number 5-8337 2-8711 0-9855
System ID 608267SMC 608263WAIS 608265MR750W
Magnetic Field Strength 1.5 T 1.5 T 3 T
Scanner Type Signa HDxt Signa HDxt Discovery MR 750w with GEM
Software Revision HD23 HD23 25.0
Gradient Type EchoSpeed EchoSpeed XRMw
Gradient Strength (mT/m) 33 33 33
Gradient Rise & Fall Time (µsec) 276 276 275
Gradient Slew Rate (mT/m/msec) 120-EPI
77-non-EPI
120-EPI
77-non-EPI
120
Number of Receivers 8 8 32
Multi-nuclear Capable No Yes No
Magnet Type S3 LCC n/a
Gradient Amplifiers 8917 8917 8920
Bore Diameter (cm) 60 60 70

TAC

System Name TACMR1 TACMR2
Location 1044 TAC 1038 TAC
Phone Number (608) 234-6668 (608) 234-6668
System ID 608890MR450W 608890MR750
Magnetic Field Strength 1.5 T 3 T
Scanner Type Optima MR 450w
with GEM
Discovery MR 750
Software Revision 25.0 25.0
Gradient Type XRMw XRM
Gradient Strength (mT/m) 33 50
Gradient Rise & Fall Time (µsec) 275 248
Gradient Slew Rate (mT/m/msec) 120 200
Number of Receivers 32 32
Multi-nuclear Capable No No
Magnet Type n/a n/a
Gradient Amplifiers 8920 8920
Bore Diameter (cm) 70 60

WIMR

System Name WIMRMR1 WIMRMR2 WIMRPETMR1
Location 1247 WIMR 1255 WIMR B1258 WIMR
Phone Number 2-8632 1-1940 2-6115
System ID 608WIMRMR0 608WIMRMR2 608262PETMR1
Magnetic Field Strength 1.5 T 3 T 3 T
Scanner Type Signa HDxt Discovery MR 750 Discovery MR 750w with GEM
Software Revision HD23 25.0 24.0 MP
Gradient Type CRM XRM XRMw
Gradient Strength (mT/m) 33 50 33
Gradient Rise & Fall Time (µsec) 276 248 275
Gradient Slew Rate (mT/m/msec) 120 200 120
Number of Receivers 8 32 32
Multi-nuclear Capable Yes Yes No
Magnet Type LLC n/a n/a
Gradient Amplifiers 8917 8920 8920
Bore Diameter (cm) 60 60 70

Imaging Applications

Both 1.5T and 3T MRI systems at WIMR are accredited by the ACR (American College of Radiology) MRI accreditation program, and the ACRIN (ACR Imaging Network) CQIE (Centers for Quantitative Imaging Excellence) program. MRI systems at the CSC are also ACR accredited for MRI. One system at the CSC and one system at the Research Park Clinic are ACR accredited for breast MRI.

Anatomic imaging is available for neuro, cardiac, MSK, abdominal, thoracic, peripheral, vascular, breast, and spine applications. Imaging can be performed as multi-slice 2D and volumetric 3D acquisitions (including BRAVO and CUBE for 3D isotropic T1- and T2-weighted imaging). Parallel imaging (ASSET/ARC) is available for many imaging sequences.

Gadolinium-based contrast agents can be used for an extra charge, following screening for NSF safety. Available FDA-approved Gd-based agents are Omniscan (gadodiamide), MultiHance (gadobenate dimeglumine), and Ablavar (gadofosveset trisodium). Imaging can be performed after the administration of a contrast agent for tumor imaging. FDA-approved contrast agents supplied by the investigator can be also used for human subjects. Contrast agents that are not FDA-approved and supplied by the investigator can be used after appropriate IACUC approval for animal subjects.

 

General

Fat/Water Separated Imaging

In addition to conventional fat saturation methods, fat/water separated imaging (i.e., generation of fat-only and water-only images) can be produced using the GE Healthcare IDEAL and Flex sequence variations.

Dynamic Contrast Enhanced Perfusion Imaging

DCE (T1-weighted) perfusion imaging using a Gd-based contrast agent is most commonly used for imaging tumor perfusion. Perfusion maps can be generated as part of image analysis provided by the IMAC.

MR Spectroscopy and Spectroscopic Imaging

Magnetic Resonance Spectroscopy (MRS) and Spectroscopic Imaging (MRSI) are available for neuro, breast, liver, and prostate applications.

Realtime Imaging

Interactive realtime imaging can be performed using the rtHawk-based system from HeartVista, Inc. which interfaces with the GE MRI systems. Applications include cardiac and vascular imaging, and neuro and body MR-guided interventions. While not FDA-approved, this system has been extensively tested, and is used in several ongoing research projects.

 

Neuro, Spine, and MSK

Dynamic Susceptibility Contrast Perfusion Imaging

DSC (T2*-weighted) perfusion imaging can be performed following injection of a Gd-based contrast agent. This type of imaging is commonly used in the clinic to assess the effects of stroke. Perfusion parameter maps, including the parameters rCBF, rCBV, FMT, Tmax and MTT, can be produced using locally-developed post-processing software, or software supplied by GE.

ASL Perfusion Imaging

Perfusion imaging can be performed without exogenous contrast agents for the assessment of cerebral blood flow in human subjects using Arterial Spin Labeling.

Susceptibility-Weighted Imaging

Susceptibility-Weighted Imaging (SWI) is available using the SWAN technique.

Diffusion-Weighted Imaging and Diffustion-Tensor Imaging

Diffusion-Weighted Imaging (DWI) and Difusion-Tensor Imaging (DTI, including tractography) can be performed to assess the restriction of water diffusion in tissue. Basic online diffusion parameter maps (ADC, FA) are automatically generated. DTI tractograms can be reconstructed as part of image analysis provided by the IMAC.

Functional Neuro MRI (fMRI)

Functional Neuro MRI (fMRI) is available at WIMR for research applications, and at other sites for clinical applications. Dedicated research staff acquire and process fMRI data. Commonly used paradigms include language and motor tasks such as word generation and unilateral finger tapping. Assistance is available for development of new fMRI tasks. Research fMRI studies are processed off-line using common software packages such as AFNI. Clinical fMRI studies are processed using PRISM.

Neuronavigation

Using the FDA-approved Clearpoint™ system from MRI Interventions, image-guided targeting of deep structures in the brain is possible, and can be used to guide interventions including DBS electrode placement and drug infusions.

Imaging near Orthopedic Implants

With the MAVRIC SL imaging option from GE Healthcare, imaging near orthopedic implants, such as knee and hip implants, is greatly improved by acquiring multiple image volumes with discrete frequency offsets, view-angle tilting, and specialized reconstruction techniques.

 

Body and Breast

Liver Fat-Fraction

Quantitative assessment of liver fat-fraction and iron content can be assessed using the IDEAL-IQ sequence.

Hyper-Polarized Gas Imaging

Facilities are available at WIMR for generating hyper-polarized Helium (He-3) or Xenon (Xe-129) gas for lung and airway imaging. Hyper-polarization of Carbon (C-13) is also available for pre-clinical imaging on the Varian 4.7T system.

Functional Body MRI

Functional Body MR Imaging is available for a wide variety of imaging scenarios. Applications include Renal BOLD and ASL perfusion imaging, quantitative liver imaging using IDEAL IQ, and liver stiffness assessment using MR Elastography (MRE).

 

Cardiac and Vascular

Cardiac MRI

A full suite of Cardiac MRI techniques is available, including function assessment with 2D FIESTA, real-time perfusion and motion imaging with MR-Echo, cardiac tagging, double- and triple-inversion recovery (Double-/Triple-IR) imaging, myocardial R2*(=1/T2*) mapping for iron overload evaluation, 2D- and 3D-Cardiac IDEAL for water/fat separation, delayed enhancement (DE) / late-gadolinium enhanced (LGE) imaging for myocardial viability imaging,nd 3D Heart for coronary artery imaging.

Vascular Imaging

Dedicated vascular imaging techniques, including MR Angiography (MRA) and MR flow measurements are available. Standard clinical MRA methods including Time-Of-Flight (TOF) MRA, 2D Phase Contrast (PC) MRA, non contrast-enhanced (NCE) Inhance methods from GE Healthcare, and contrast enhanced imaging including TRICKS and Fluoro-Triggered 3D MRA (with ARC parallel imaging and ROSE) are available. PC-VIPR (Phase Contrast with Vastly-undersampled Isotropic Projection Reconstruction Trajectories) is a 3D volumetric flow imaging method, developed at UW-Madison, that while not yet FDA-approved, has been widely tested and validated and is used in multiple research projects. MRA post-processing is available, and can included advanced methods for reconstruction of 3D flow data. Additional vascular imaging methods are under continual development in the MRI lab, and may also be available for research projects.

Installed Features

Scanner Features

  installed not installed  not installed not applicable  N/A

UW AF
CH
RP TAC WIMR
UWMR2
UWMR3
UWMR4
UWMR5
UWMR6
AFCHMR1
RPMR1
RPMR2
RPMR3
TACMR1
TACMR2
WIMRMR1
WIMRMR2
WIMRPETMR1
Software Version
HD23
HD23
25.0
25.0
25.0
25.0
HD23
HD23
25.0
25.0
25.0
HD23
25.0
24.0 MP
Category Software Option
General Echo Planar Imaging

Fiesta 2D

Fiesta 3D

2D Fat Sat Fiesta

3D Fat Sat FIESTA

ARC

Multi-Nuclear Spectroscopy

not installed not installed not installed not installed not installed not installed not installed not installed
Spectro Analysis GE

not installed not installed not installed not installed not installed not installed not installed not installed
Enhanced DWI

IDEAL

Dual Drive

not applicable not applicable not applicable not installed not applicable not applicable not applicable not applicable not installed
DISCO

not applicable not applicable not applicable not applicable not applicable not applicable
Category Software Option UW AF
CH
RP TAC WIMR
UWMR2
UWMR3
UWMR4
UWMR5
UWMR6
AFCHMR1
RPMR1
RPMR2
RPMR3
TAC1
TAC2
WIMRMR1
WIMRMR2
WIMRPETMR1
Body & Breast LAVA-XV

LAVA-FLEX

not installed
Body (LAVA) Navigator not applicable not applicable not applicable not applicable not applicable
IDEAL IQ not applicable not applicable not applicable not applicable not applicable not installed
MRTOUCH (MRE) not applicable not applicable not installed not installed not applicable not applicable not applicable not installed not installed
VIBRANT-DE

not applicable not applicable not applicable not applicable not applicable
Breast Single Voxel Spectroscopy not installed not installed not installed not installed not installed
Probe 3D Prostate

not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed
Category Software Option UW AF
CH
RP TAC WIMR
UWMR2
UWMR3
UWMR4
UWMR5
UWMR6
AFCHMR1
RPMR1
RPMR2
RPMR3
TACMR1
TACMR2
WIMRMR1
WIMRMR2
WIMRPETMR1
Cardiac & Vascular Fluoro-triggered MRA

TRICKS

Inhance 3D Velocity

Inhance 3D Inflow IR

Inhance 2D Inflow

Inhance DeltaFlow

not installed not installed not installed not installed not installed
Tagging not installed not installed not installed
MR-Echo

not installed not installed not installed
CINE IR

not installed not installed not installed
3D Heart

not installed not installed not installed not installed
Phase-Sensitive MDE

not applicable not applicable not applicable not applicable not installed not applicable
Black Blood SSFSE

not applicable not applicable not applicable not applicable not installed not applicable
MDE Plus

not applicable not applicable not applicable not applicable not applicable not applicable
Category Software Option UW AF
CH
RP TAC WIMR
UWMR2
UWMR3
UWMR4
UWMR5
UWMR6
AFCHMR1
RPMR1
RPMR2
RPMR3
TACMR1
TACMR2
WIMRMR1
WIMRMR2
WIMRPETMR1
Neuro, Spine & MSK Spectroscopy/PROBE not installed not installed
ProbePRESS

not installed not installed not installed
BRAVO

Cube T2

T2 PROPELLER

not installed
DW PROPELLER

not installed
Diffusion Tensor

not installed
FiberTrak

not installed not installed not installed not installed
BrainStat AIF

not applicable not applicable not applicable not applicable not applicable
3D ASL

not installed not installed not installed not installed not installed not installed
SWAN (T2Star Weighted Angiography) not installed not installed
BrainWave RT

not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed
BrainWave PA

not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed
T2MAP

not installed not installed not installed not installed not installed
MAVRIC SL

not applicable not applicable not applicable not applicable not applicable not installed
FOCUS

not applicable not applicable not applicable not applicable not applicable not installed
PROMO

not applicable not applicable not applicable not applicable not applicable not installed
Silent MR

not applicable not applicable not applicable not applicable not applicable not applicable not applicable not applicable
Silent MRA not applicable not applicable not applicable not applicable not applicable not applicable not applicable not applicable not applicable not applicable
Silent T2 Propeller

not applicable not applicable not applicable not applicable not applicable not applicable not applicable not applicable not applicable
Silent DWI

not applicable not applicable not applicable not applicable not applicable not applicable not applicable not applicable not applicable
CUBE Double-IR

not applicable not applicable not applicable not applicable not applicable not applicable

Third-Party Applications

Category Software Option UW AF
CH
RP TAC WIMR
UWMR2
UWMR3
UWMR4
UWMR5
UWMR6
AFCHMR1
RPMR1
RPMR2
RPMR3
TACMR1
TACMR2
WIMRMR1
WIMRMR2
WIMRPETMR1
General rtHawk (HeartVista)

not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed
Body & Breast MR Elastography (Mayo)

not installed not installed not installed not installed not installed not installed not installed
Steam-CSI (UCSD)

not installed not installed not installed not installed not installed not installed not installed not installed
Lipoquant (UCSD)

not installed not installed not installed not installed not installed not installed
Neuro, Spine & MSK Clearpoint(TM) Neuronavigation

not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed

Prototype Applications

Category Software Option UW AF
CH
RP TAC WIMR
UWMR2
UWMR3
UWMR4
UWMR5
UWMR6
AFCHMR1
RPMR1
RPMR2
RPMR3
TACMR1
TACMR2
WIMRMR1
WIMRMR2
WIMRPETMR1
Body & Breast IDEAL-IQ

not installed not installed
Navigated LAVA

not applicable not applicable not applicable not applicable not installed not installed not applicable not applicable not applicable not applicable not applicable
Renal BOLD

Cardiac & Vascular PC-VIPR

not installed not installed not installed
CE-MRA-XV

not installed not installed
SSD-FIESTA

not installed not installed
2D Cardiac IDEAL

not installed not installed not installed
3D Cardiac IDEAL

not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed not installed