MRI Exam-Specific Parameters: Body Module (Revised 9/11/2020)
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Modified on: Fri, 11 Sep, 2020 at 2:53 PM
In addition to the exam-specific instructions in the following tables, review the following information prior to examination selection and submission. Failure to follow the guidance below may result in failure of the submitted examination.
Failure to meet anatomic coverage and imaging plane specifications may result in a fail of the submitted examination.
Female Pelvis such as for Uterine or Adnexal Disease |
This examination is a high-resolution female pelvis protocol. Single shot techniques (HASTE, SSFSE, SSTSE and steady state free precession such as FIESTA, TRUE FISP, BFFE) are not acceptable substitutions for the female pelvis high resolution sequence. The exam must include a uterus. |
Required Sequences | Category A: Pulse Sequence and Image Contrast | Category B: Anatomic Coverage and Imaging Planes | Category C: Spatial Resolution |
Sagittal high resolution bright fluid | The uterine corpus zonal anatomy must be clearly definedThe uterine cervix zonal anatomy must be clearly defined
|
Must cover the uterus, cervix, adnexa and pelvic sidewalls
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 1.0 mm2
|
Axial or oblique axial high resolution bright fluid | The uterine corpus zonal anatomy must be clearly definedThe uterine cervix zonal anatomy must be clearly defined
| Must cover from iliac crests to vaginal introitusMust cover pelvic sidewalls
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 1.0 mm2
|
Axial whole pelvis dark fluid | | Must cover entire bony pelvis
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 2.4 mm2
|
Sagittal or axial dark fluid with fat suppression | Fat must be hypointenseAll scan parameters must be identical to the post contrast
| Sagittal must cover the uterus, cervix, adnexa and pelvic sidewallsAxial must cover entire bony pelvis
| If sagittal:Slice thickness ≤ 4.0 mmGap ≤ 0.0 mmPixel area ≤ 2.4 mm2 If axial:Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 2.4 mm2
|
Sagittal or axial dark fluid with fat suppression post contrast | Fat must be hypointenseAll scan parameters must be identical to the pre-contrastMust show sufficient uterine enhancement
| Sagittal must cover the uterus, cervix, adnexa and pelvic sidewallsAxial must cover entire bony pelvis
| If sagittal:Slice thickness ≤ 4.0 mmGap ≤ 0.0 mmPixel area ≤ 2.4 mm2 If axial:Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 2.4 mm2
|
Pediatric Pelvis such as for Tumor Diagnosis or Follow-Up |
Required Sequences | Category A: Pulse Sequence and Image Contrast | Category B: Anatomic Coverage and Imaging Planes | Category C: Spatial Resolution |
Sagittal high resolution bright fluid | The bladder, rectum and adjacent reproductive organs (if reproductive organs present) should be clearly definedMust include soft tissues of the pelvis and bone marrow of the spine
| Must cover the pelvic sidewalls
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mm Pixel area ≤ 1.0 mm2
|
Axial high resolution bright fluid | Must have good discrimination of bladder from rectum and adjacent reproductive organs (if reproductive organs present)Must have good definition of the surrounding soft tissues and bone marrow
|
Must cover entire bony pelvis and surrounding soft tissues and musculature and extend through perineum
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 1.0 mm2
|
Axial whole pelvis dark fluid | | Must cover entire bony pelvis and surrounding soft tissues and musculature and extend through perineum
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 2.4 mm2
|
Sagittal or axial dark fluid with fat suppression | Fat must be hypointenseAll scan parameters must be identical to the post contrast
| Sagittal must cover the pelvic sidewallsMust cover entire bony pelvis and surrounding soft tissues and musculature and extend through perineum
| If sagittal:Slice thickness ≤ 4 mmGap ≤ 1.5 mmPixel area ≤ 2.4 mm2
If axial:Slice thickness ≤ 5 mmGap ≤ 1.5 mm- Pixel area ≤ 2.4 mm2
|
Sagittal or axial dark fluid with fat suppression post contrast | Fat must be hypointenseAll scan parameters must be identical to the pre-contrast
| Sagittal must cover the pelvic sidewallsMust cover entire bony pelvis and surrounding soft tissues and musculature and extend through perineum
| If sagittal:Slice thickness ≤ 4 mmGap ≤ 1.5 mmPixel area ≤ 2.4 mm2
If axial:Slice thickness ≤ 5 mmGap ≤ 1.5 mmPixel area ≤ 2.4 mm2
|
Hepatobiliary to Include MRCP |
Required Sequences | Category A: Pulse Sequence and Image Contrast | Category B: Anatomic Coverage and Imaging Planes | Category C: Spatial Resolution |
In phase/out of phase dark fluid | Must have adequate hepatic/ splenic contrastMust display appropriate signal loss on opposed-phase imagesMust have good definition of surrounding soft tissuesMust be obtained prior to contrast administration
|
Must cover the entire liver
| Slice thickness ≤ 7.0 mmGap ≤ 1.5 mm Pixel area ≤ 7.2 mm2
|
Axial or coronal long TR bright fluid with or without fat suppression | Must have good discrimination of liver from biliary treeMust have good definition of surrounding soft tissuesSteady State Free Precession sequences, such as FIESTA and true FISP are not adequate substitutions for TSE, FSE or IR sequences at this time and are not acceptable for this sequence
| Must cover the entire liver
| Slice thickness ≤ 7.0 mmGap ≤ 1.5 mm Pixel area ≤ 3.75 mm2
|
MRCP 3D or 2D | You may submit a 3D or 2D sequence for MRCPOne reformatted MIP image is required for 3D gated MRCPMust have good fluid discrimination
| Must cover the central biliary tree including the second order branchesMust cover the entire pancreasBile ducts and pancreatic ducts must be well defined
| 3D:Slice thickness ≤ 2.0 mmVoxel volume ≤ 5.2 mm3
2D Thick Slab:Slice thickness > 40 mm, < 60 mmGap 0.0 mmPixel area ≤ 1.0 mm2
|
Axial 3D dark fluid dynamic with fat suppression post contrast(The testing package will calculate spatial resolution as voxel volume, but your images must meet the pixel area requirements listed) | Must have good definition of surrounding soft tissuesMust have at least four phases:Pre-contrastParenchymal arterialPortal venousEquilibrium or delayed
| Must cover the entire liver
| Slice thickness ≤ 6.0 mmGap = 0 mmPixel area ≤ 4.5 mm2
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Pediatric Abdomen with Dynamic Liver Assessment |
Required Sequences | Category A: Pulse Sequence and Image Contrast | Category B: Anatomic Coverage and Imaging Planes | Category C: Spatial Resolution |
In phase/out of phase dark fluid | Must have adequate hepatic/ splenic contrastMust display appropriate signal loss on opposed-phase imagesMust have good definition of surrounding soft tissues
| Must cover the entire liver
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mm Pixel area ≤ 7.2 mm2
|
Axial or coronal long TR bright fluid with or without fat suppression | Must have good discrimination of liver from biliary treeMust have good definition of surrounding soft tissues
| Must cover the entire liver
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 3.75 mm2
|
Axial 3D dark fluid dynamic with fat suppression post contrast | Must have good definition of surrounding soft tissuesMust have at least four phases:Pre-contrastParenchymal arterialPortal venousEquilibrium or delayed
**Either extracellular gadolinium-based contrast agents (GBCA) or combined extracellular-hepatobiliary GBCA (Gadoxetate disodium-EOVIST ™) are acceptable | Must cover the entire liver
| Slice thickness ≤ 5.0 mmGap = 0 mmPixel area ≤ 4.5 mm2
|
Renal |
Required Sequences | Category A: Pulse Sequence and Image Contrast | Category B: Anatomic Coverage and Imaging Planes | Category C: Spatial Resolution |
Axial or coronal bright fluid with fat suppression | Must have good discrimination between the kidney and the collecting systemSteady State Free Precession sequences, such as FIESTA and true FISP are not adequate substitutions for TSE, FSE or IR sequences at this time, and are not acceptable for this sequence
| Axial must cover both adrenal glands and kidneys entirelyCoronal must cover both kidneys anterior to posterior
| Slice thickness ≤ 7.0 mmGap ≤ 1.5 mm Pixel area ≤ 3.75 mm2
|
Axial in-phase/ opposed phase dark fluid | Must have good corticomedullary discriminationMust have good definition of surrounding tissues
| Must cover both adrenal glands and kidneys entirely
| Slice thickness ≤ 7.0 mmGap ≤ 1.5 mm Pixel area ≤ 7.2 mm2
|
Dynamic axial or coronal dark fluid with fat suppression post contrast | Must have sufficient IV contrast enhancement of the renal parenchyma over timeMust include a pre-contrast phase
| Axial must cover both adrenal glands and kidneys entirelyCoronal must cover both kidneys anterior to posterior
| Slice thickness ≤ 5.0 mmGap ≤ 1.5 mmPixel area ≤ 2.4 mm2
|
Revision History for this Article |
Date | Section | Description of Revision(s) |
12-12-19 | All | Article created; FAQs incorporated; No criteria changes |
12-16-19 | Hepatobiliary to include MRCP | Axial or coronal long TR bright fluid with or without fat suppression: Corrected slice thickness from </= 1.0 mm to </= 7.0 mm. |
12-16-19 | Body Module General Instructions | Removed the following bullet: - Single shot techniques (HASTE, SSFSE, SSTSE and steady state free precession such as FIESTA, TRUE FISP, BFFE) are not acceptable subsitutions in ANY of the body module exams
|
12-19-19 | Hepatobiliary to include MRCP | In phase/out of phase dark fluid: Corrected pixel area to ≤ 7.2 mm2 |
1-21-2020 | Hepatobiliary to include MRCP
| Axial or coronal long TR bright fluid with or without fat suppression in category A: Pulse Sequence and Image Contrast please added the bullet: Steady State Free Precession sequences, such as FIESTA and true FISP are not adequate substitutions for TSE, FSE or IR sequences at this time, and are not acceptable for this sequence.
|
1-21-2020 | Renal | Axial or coronal long TR bright fluid with fat suppression in category A: Pulse Sequence and Image Contrast please add the bullet: Steady State Free Precession sequences, such as FIESTA and true FISP are not adequate substitutions for TSE, FSE or IR sequences at this time, and are not acceptable for this sequence.
|
8-6-2020 | Pediatric Abdomen with Dynamic Liver Assessment | Correct the Gap requirement for the axial or coronal long TR bright fluid with or without fat suppression |
9-11-2020 | Renal | Corrected Type |
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