mrimaster

MRI Urinary Bladder(Protocols and Planning)

Indications for MRI urinary bladder

Contraindications

Patient preparation for MRI Urinary Bladder

Positioning for MRI Urinary Bladder

MRI urinary bladder positioning photo

Recommended MRI Urinary Bladder Protocols and Planning

MRI Urinary Bladder localiser

A three-plane T2-weighted HASTE localizer must be taken initially to localize and plan the sequences. These fast, single-shot localizers usually have an acquisition time of less than 25 seconds, which is excellent for localizing pelvic structures.

MRI BLADDER LOCALIZER

T2 tse sagittal 3mm SFOV

Plan the sagittal slices on the coronal plane, angling the positioning block parallel to the urinary bladder (i.e., parallel to the pubic symphysis and median sacral crest). Check the positioning block in the other two planes. An appropriate angle must be given in the axial plane (parallel to the line along the linea alba and the median sacral crest). Slices should be sufficient to cover the entire urinary bladder from the right acetabular rim to the left acetabular rim. Using a saturation band above and in front of the sagittal block will help reduce artifacts caused by breathing and peristalsis.

planning of urinary bladder mri sagittal images

Parameters

TR

4000-5000

TE

100-120

SLICE

3 MM

FLIP

130-150

PHASE

A>P

MATRIX

320X320

FOV

200-250

GAP

10%

NEX(AVRAGE)

2

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

DWI epi 3 scan trace axial 3mm SFOV pelvis

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

6000-7000

TE

90

IPAT

ON

NEX

 3     5     8

SLICE

3 MM

MATRIX

192X192

FOV

200-250

PHASE

R>L

GAP

10%

B VALUE

0
500
1000

T2 tse coronal 3mm SFOV

Plan the coronal slices on the sagittal plane; angle the positioning block vertically through the urinary bladder. Check the positioning block in the other two planes. An appropriate angle must be given in the axial plane (parallel to the right and left hip joints). Slices must be sufficient to cover the entire urinary bladder from the anterior abdominal wall up to the rectum. Using a saturation band above and in front of the coronal block will help reduce artifacts from breathing and peristalsis.

Parameters

TR

4000-5000

TE

100-120

SLICE

3 MM

FLIP

130-150

PHASE

R>L

MATRIX

320X256

FOV

200-250

GAP

10%

NEX(AVRAGE)

2

T2 stir coronal 5 mm big FOV

Plan the large field of view (FOV) coronal slices on the sagittal plane and position the block parallel to the lumbar spine. Verify the positioning block in the other two planes as well. Establish an appropriate angle in the axial plane, which runs parallel to the right and left hip joint. The slices should adequately cover the entire abdomen and pelvis, extending from the anterior abdominal wall to the sacrum. The FOV must be large enough to encompass the abdomen and pelvis, typically ranging from 380mm to 400mm. Large FOV scans are usually performed to evaluate the local spread of the pathology and assess the para-aortic and pre-sacral nodes.

Parameters

TR

4000-5000

TE

110

FLIP

130

NEX

2

SLICE

5MM

MATRIX

384X320

FOV

380-400

PHASE

R>L

GAP

10%

TI

130

Now, prepare the injector to administer the IV gadolinium DTPA injection. The document below provides access to the recommended dosage of gadolinium DTPA injection, as advised by the manufacturer.

T1 VIBE DIXON 3D sagittal dynamic 1 pre 5 post

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.

MRI urinary bladder planning and protocol of axial dynamic scans

Parameters

TR

6-7

TE

2.39   4.77

FLIP

10

NEX

1

SLICE

3 MM

MATRIX

224X224

FOV

220-260

PHASE

R>L

DYNAMIC

6 SCANS

IPAT

ON