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The objective is to maintain a safe and secure environment in the research MRI unit for all research participants and personnel.

THE MRI MAGNET IS ALWAYS ON. DO NOT ENTER ZONE 3 AND 4 WITHOUT AUTHORIZATION FROM MRI STAFF.

Zones

map of zones

Zone I:

Readily accessible areas by the general public outside MR environment (waiting room)


Zone II:

Area between Zone I and Zone III where individuals are supervised by MR personnel (participant prep area)


Zone III:

Restricted transition area between Zone II and Zone IV that is supervised and controlled by MR personnel (control room and restricted waiting area)


Zone IV:

WARNING: Area controlled and strictly supervised by Level Two MR personnel. This is a potentially hazardous area with presence of very strong magnetic fields. MRI MAGNET IS ALWAYS ON. DO NOT ENTER WITHOUT BEING SCREENED BY/WITH AUTHORIZATION FROM THE MRI TECHNOLOGIST ON-SITE. 

Policies

MRI Emergency Code Blue and White policy

The MRI Emergency Code Blue and White policy is for all personnel to provide the appropriate response to medical and behavioural emergency situations in the MRI unit.

MRI Emergency Procedures: Fire

The MRI Emergency Procedures Fire policy is for all personnel to provide the appropriate response to a Code Red situation in the MRI unit.

MRI Emergency Procedures: Quench

The MRI Emergency Procedures Quench policy is for all personnel to provide the appropriate response to a quench emergency situation in the MRI unit. 
A “quench” is an event that occurs when the magnetic field is lost due to the liquid helium (called cryogen). This creates super conduction, which is rapidly boiled off and vented from the room.

MRI Emergency Procedures: Flood

The MRI Emergency Procedures Flood policy is for all personnel to provide the appropriate response to a flood emergency situation in the MRI unit
 

MRI Policy: Cleaning and Disinfection

The objective of the cleaning and disinfection policy is to maintain a safe and clean environment for all research participants and personnel.

Procedures

MRI Participant Screening

The MRI Screening of Participants policy must be followed to screen and ensure participant and personnel safety in the MRI unit.

Download screening form (v.1.2)

MRI Screening of Visitors and Staff

The MRI Screening of Visitors and Staff working in the MRI Unit policy must be followed to ensure participant and personnel safety in the MRI unit.

For Scientists

Application Form to Use Research MRI for Study

The MRI Management Group requires the scientist to submit an application of an MRI study to be carried out in the Bloorview Research Institute MRI Unit.

Download study application form (v.1.2)

Requisition Form for Research Magnetic Resonance Imaging (MRI)

The requisition form is for Principal Investigators (PIs) or Research Coordinators to complete, to order a scan for study participants. The form should be presented at the MRI appointment.

Download requisition form (v.1.0)

MRI Unit Sequence Table

Scanner: 3.0T Siemens Prisma NUMARIS/4 VE11E

v.1.0 | Updated March 2020

Brain Sequences

MR Sequence

Scan Parameters

Scan Time

Purpose

License

3D T1 MP RAGE

(Magnetization Prepared Rapid Acquisition Gradient Echo)

(0.8x0.8x0.8)mm3 , TR=1870ms, TE=3.14ms, Flip Angle=9o, Sagittal FOV =256x250mm2, 240 slices, GRAPPA=2

5:03

High resolution T1 weighted 3D sequences with magnetization preparation for

brain morphometry which provides excellent contrast properties for cortical segmentation.

Siemens

3D T1 MultiEcho MPRAGE

(Magnetization Prepared Rapid Acquisition Gradient Echo)

(1.0x1.0x1.0)mm3 , TR=2350ms, TE=1.69/3.55/5.41/7.27ms, TI=1100ms Flip Angle=7 o, Sagittal FOV =256x256mm2, 176 slices, GRAPPA=2

5:38

High resolution T1 weighted 3D sequences with magnetization preparation for brain morphometry which provides excellent contrast properties for cortical segmentation. Higher bandwidth reduces distortions while combining echoes recovers SNR.

C2P Agreement

3D T1 MPRAGE

(Magnetization Prepared Rapid Acquisition Gradient Echo)

With Navigator

(1.0x1.0x1.0)mm3 , TR=2500ms, TE=2.88ms, TI=1070ms Flip Angle=8o, Sagittal FOV =256x256mm 2, 176 slices, GRAPPA=2

7:12

High resolution T1 weighted 3D sequences with magnetization preparation for brain morphometry which provides excellent contrast properties for cortical segmentation. Prospective compensation for subject motion using volumetric navigators (vNavs)

C2P Agreement

3D T1 MultiEcho MPRAGE

(Magnetization Prepared Rapid Acquisition Gradient Echo)

With Navigator

(0.8x0.8x0.8)mm3 , TR=2500ms, TE=1.86/3.78/5.7/7.62ms, TI=1300ms Flip Angle=8o , Sagittal FOV =256x256mm2, 160 slices, GRAPPA=2

8:10

High resolution T1 weighted 3D sequences with magnetization preparation for brain morphometry which provides excellent contrast properties for cortical segmentation. Prospective compensation for subject motion using volumetric navigators (vNavs). Higher bandwidth reduces distortions while combining echoes recovers SNR.

C2P Agreement

3D T2 SPACE

(0.8x0.8x0.8)mm3 , TR=3200ms, TE=409ms, Flip Angle Variable, Sagittal FOV =256x256mm2, 192 slices, GRAPPA=2

6:18

High resolution T2 weighted 3D sequence for brain morphometry. Volumes, thickness, folding, shape, tissue density

Siemens

3D T2 SPACE (With Navigator)

(1.0x1.0x1.0)mm3 , TR=3200ms, TE=565ms, Sagittal FOV =256x256mm2, 176 slices, GRAPPA=2

6:35

High resolution T2 weighted 3D sequence for brain morphometry. Volumes, thickness, folding, shape, tissue density. Prospective compensation for subject motion using volumetric navigators (vNavs)

CP2 Agreement

Multiband EPI

(1.5x1.5x1.5)mm3 , TR=3222ms, TE=89ms, Flip Angle 78o, Transverse FOV =210x210mm2 , 92 slices, 92 Diffusion Encoding Directions w/ b=1500, 3000 s/mm2, 12 b=0s/mm2, Multiband=4

11:33

Fractional anisotropy, mean radial & axial diffusivities, track delineation (global & regional) neurite density and orientation dispersion (NODDI)

C2P Agreement

Multi-Shell DWI

(b=1000)

(2x2x2)mm3 , TR=3800ms, TE=73ms, Flip Angle 90 o, Transverse FOV =244x244mm2, 70 slices, 59 Diffusion Encoding Directions w/ b=1000, 6 w/b=0

2:36

Diffusion weighted images

Siemens

Multi-Shell DWI

(b=1600)

(2x2x2)mm3 , TR=3800ms, TE=73ms, Flip Angle 90 o, Transverse FOV =244x244mm2, 70 slices, 59 Diffusion Encoding Directions w/ b=1600, 5 w/b=0

3:14

Diffusion weighted images

Siemens

Multi-Shell DWI

(b=2600)

(2x2x2)mm3 , TR=3800ms, TE=73ms, Flip Angle 90 o, Transverse FOV =244x244mm2, 70 slices, 59 Diffusion Encoding Directions w/ b=2600, 7 w/b=0

4:33

Diffusion weighted images

Siemens

DWI Blip

(2x2x2)mm3 , TR=3800ms, TE=73ms, Flip Angle 90 o, Transverse FOV =244x244mm2, 70 slices, w/ b=0

0:23

Reversed phase encode b=0 scan for distortion correction

Siemens

EPI fMRI

(3x3x3)mm3 , TR=1500ms, TE=30ms, Flip Angle 70 o, Sagittal FOV =222x222mm2, 50 slices, 150 volumes

4:03

Functional patterns in BOLD

Siemens

DTI

(1.7x1.7x4)mm3

TR=3200ms, TE=69ms, Flip Angle 20o, Transverse FOV=220x220mm2, 27 slices 20 Diffusion Encoding Directions w/ b=0 12 and b=1000 3 GRAPPA=2

5:02

mean diffusivity (MD), fractional anisotropy (FA), Diffusion Direction Map, Tensor

Siemens

MEGA PRESS

Vol: (30x30x30)mm

TR=2400ms, TE=68ms NEX=128, Flip Angle=90 o

Transverse

5:17

Localized j-difference editing spectroscopy of GABA in the human brain. Combining normal PRESS localization scheme with frequency selective editing pulses for selection of GABA.

C2P Agreement

SPECIAL

Vol: (30x30x30)mm

TR=4000ms, TE=8.5ms NEX=64, Flip Angle=90 o

Transverse

4:32

Single voxel localized spectroscopy in the human brain. Short echo time achieved by combining single spin echo localization scheme with 1-D ISIS inversion preparation.

C2P Agreement

T2 FLAIR

(0.9x0.9x5)mm3

TR=9000ms, TE=91ms, TI=2500ms

Flip Angle 150o, Transverse FOV=220x220mm 2 , Slices=32, GRAPPA=2

2:44

Strong T2 weighted imaging sensitive to a wide range of lesions, including cortical, periventricular, and meningeal disease through suppression of signal from CSF.

Siemens

Susceptibility Weighted Imaging (SWI)

(0.9x0.9x1.5)mm3

TR=27ms, TE=20ms, Flip Angle=15, Transverse FOV=220x200mm 2 , Slices per slab=80, Distance factor= 20% GRAPPA=2

4:54

Detection of iron/blood products and calcifications using 3D acquisition providing thinner slices and smaller voxel sizes

Siemens


Abdominal Sequences

MR Sequence

Scan Parameters

Scan Time

Purpose

License

T1w mbh

(1.6x1.6x1.6)mm3 , TR=250ms, TE=10ms, Concatenations=2

Flip Angle=90o, Transverse FOV =400x300mm 2, 12 slices slices, GRAPPA=2

16sec/

breath

Breath hold scan, Subcutaneous and visceral fat content

Siemens

T1w respiratory trigger

(1.6x1.6x1.6)mm3 , TR=1540ms, TE=2.38ms, Flip Angle=20o, Transverse FOV =400x300mm2 , 12 slices, GRAPPA=2

~1min, participant dependent

Free breathing triggered scan, subcutaneous and visceral fat content

Siemens

T1 VIBE-DIXON

(1.2x1.2x3.0)mm3, TR=3.97, TE=1.29, 2.52, Flip Angle=9o, Transverse FOV 380x308mm2, 72 slices per slab, CAIPIRINHA=2

15s

Water only, fat only, in-phase, and out-of-phase images. Fat-quantification from fat only images.

Siemens