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MRI Kidney Ureters and Bladder (KUB) Protocols and Planning

Indications for mri kidney ureters and bladder (KUB) scan

Contraindications for MRI Kidney Ureters and Bladde Scan

Patient preparation MRI Kidney Ureters and Bladder (KUB) scan

Positioning MRI Kidney Ureters and Bladder (KUB)

MRI urography positioning photo

Recommended MRI Kidney Ureters and Bladder (KUB) Protocols and Planning

MRI Kidney Ureters and Bladder (KUB) Localizer

A three-plane T2 TRIFISP\HASTE localizer must be taken initially to localize and plan the sequences. These are fast single-shot localizers with under 25s acquisition time, which are excellent for localizing vascular structures. Take at least 5-8 slices in all planes to get the best results.

T2 HASTE\TRUFI axial 4 mm

Plan the axial slices on the coronal plane, angle the positioning block parallel to the right and left iliac crest. Check the positioning block in the other two planes. An appropriate angle must be given in the sagittal plane (horizontally across the abdomen). The slices must be sufficient to cover the entire abdomen and pelvis from the diaphragm down to the symphysis pubis. Use a field of view (FOV) that is large enough to encompass the entire abdomen, typically ranging from 350mm to 400mm.

Parameters

TR

4-5

TE

2-3

FLIP

60

NEX

1

SLICE

4 MM

MATRIX

320×256

FOV

350-400

PHASE

R>L

OVERSAMPLE

50%

IPAT

ON

T2 HASTE\ TRUFI fat sat axial 4 mm

Plan the axial slices on the coronal plane, angle the positioning block parallel to the right and left iliac crest. Check the positioning block in the other two planes. An appropriate angle must be given in the sagittal plane (horizontally across the abdomen). The slices must be sufficient to cover the entire abdomen and pelvis from the diaphragm down to the symphysis pubis. Use a field of view (FOV) that is large enough to encompass the entire abdomen, typically ranging from 350mm to 400mm.

Parameters

TR

4-5

TE

2-3

FLIP

60

NEX

1

SLICE

4 MM

MATRIX

320×256

FOV

350-400

PHASE

R>L

OVERSAMPLE

50%

fat sat

ON

T1 vibe DIXON 3d axial 4 mm

Plan the axial slices on the coronal plane; angle the position block parallel to the line along the right and left iliac crest. Check the positioning block in the other two planes. An appropriate angle must be given in the sagittal plane (perpendicular to the lumbar spine). Slices must be sufficient to cover the whole abdomen and pelvis from diaphragm down to symphysis pubis. FOV must be big enough to cover the whole abdomen (normally 350mm-400mm).

Parameters

TR

6-7

TE

2.39   4.77

FLIP

10

NXA

1

SLICE

4 MM

MATRIX

320×320

FOV

320-350

PHASE

A>P

OVERSAMPLE

20%

BH

YES

T1 vibe DIXON 3D coronal 2mm

Plan the coronal slices on the axial plane; angle the position block parallel to the mid line along the right and left kidneys. Check the positioning block in the other two planes. An appropriate angle must be given in the sagittal plane (parallel to L spine). Slices must be sufficient to cover the whole urinary system. Phase oversampling and, in the case of 3D blocks, slice oversample, must be used to avoid wrap around artefacts. FOV must be big enough to cover the kidneys and bladder. Instruct the patient to hold their breath during image acquisition. (In our department we instruct the patients to breath in and out twice before the “breath in and hold” instruction.).

Parameters

TR

6-7

TE

2.39   4.77

FLIP

10

NXA

1

SLICE

2 MM

MATRIX

320×320

FOV

320-350

PHASE

R>L

OVERSAMPLE

20%

BH

YES

T2 HASTE fat sat coronal 3mm

Plan the coronal slices on the axial plane; angle the position block parallel to the mid line along the right and left kidneys. Check the positioning block in the other two planes. An appropriate angle must be given in the sagittal plane (parallel to L spine). Slices must be sufficient to cover the whole urinary system. Phase oversampling and, in the case of 3D blocks, slice oversample, must be used to avoid wrap around artefacts. FOV must be big enough to cover the kidneys and bladder. Instruct the patient to hold their breath during image acquisition. (In our department we instruct the patients to breath in and out twice before the “breath in and hold” instruction.).

Parameters

TR

2000-2500

TE

90-100

FLIP

150

NEX

1

SLICE

3 MM

MATRIX

320X320

FOV

400-450

PHASE

R>L

OVERSAMPLE

50%

IPAT

OFF

T2 tse axial 3mm SFOV

Plan the axial slices on the sagittal plane and angle the positioning block horizontally across the urinary bladder. Check the positioning block in the other two planes. An appropriate angle must be given in the coronal plane, horizontally across the urinary bladder. Slices should be sufficient to cover the urinary bladder from L1 down to two slices below the symphysis pubis. To reduce artifacts from breathing and peristalsis, consider using a saturation band above and in front of the axial block.

urinary bladder mri axial acan planning

Parameters

TR

4000-6000

TE

100-120

SLICE

3 MM

FLIP

130-150

PHASE

R>L

MATRIX

320X320

FOV

200-250

GAP

10%

NEX(AVRAGE)

2

T2 tse\haste fat sat breath hold 4mm axial

Plan the coronal slices on the axial plane and angle the positioning block parallel to the right and left kidneys. Check the positioning block in the other two planes. Ensure an appropriate angle is given in the sagittal plane (parallel to the long axis of the kidney). The slices should adequately cover both kidneys from the anterior to posterior direction. Phase oversampling should be used to prevent wrap-around artifacts. Consider adding saturation bands at the top and bottom of the block to minimize artifacts caused by fat signal, arterial pulsation, and breathing. Instruct the patient to hold their breath during image acquisition.

mri kidneys planning of axial images

Parameters HASTE FAT SAT

TR

2000-2500

TE

90-110

FAT SAT

SPAIR

NEX

1

SLICE

4MM

MATRIX

320×256

FOV

300

PHASE

R>L

OVERSAMPLE

50%

TRIGGER

NO

Parameters T2 FAT SAT

TR

6000-7000

TE

150

FAT SAT

SPAIR

NEX

1

SLICE

4MM

MATRIX

256×208

FOV

280-300

PHASE

A>P

OVERSAMPLE

80%

IPAT

ON