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Technique Parameters and Anatomic Coverage: CT - Adult Abdomen Module (Revised 11-10-2022)

Revision History



IMPORTANT: All items in bold in the Technique Parameters and Anatomic Coverage sections below are required to successfully achieve accreditation. CTDIvol information is required for each study. Either include a screen save of the dose with the images, or enter the dose as displayed by the scanner in the Clinical Test Image Data Sheet. Upload the primary reconstructed images used for diagnostic interpretations; include the scout(s) and dose report. Do NOT submit the sagittal, coronal and extra thin images unless specifically listed under required series. 


IMPORTANT: ***Currently many DE units have the ability to post process a non-contrast series from the acquired contrast series. This virtual non-contrast series is acceptable to submit as part of accreditation review for the adult liver, adult pancreas or adult renal exams.


Adult Abdomen

(This is a a uniphasic exam submission. If submitting a multiphasic exam, consider one of the other exam choices.)

Technique Parameters

Required Series

IV Contrast Enhanced timed to portal venous phase. 

Reconstructed Slice Width

≤ 5 mm

Reconstruction Algorithm

Standard or soft tissues, or appropriate body kernel

Oral Contrast

It is recommended oral contrast material be present with barium or neutral (water) contrast agents

CTDIvol

Reference value: 25 mGy; Pass/Fail criteria: 30 mGy (CTDIvol guidance is based on a single series or uniphasic exam for a standard size patient)

Anatomical Coverage

Coverage

Diaphragm to iliac crest to include the entire liver; May include pelvis 

Adult Liver Study

Technique Parameters

Required Series    

Non-contrast*** and IV contrast enhanced study to include arterial and portal venous phase series

Reconstructed Slice Width

≤ 3 mm 

Reconstruction Algorithm

Standard or soft tissue (or appropriate body kernel) 

Oral Contrast    

Not required

CTDIvol    

There are no reference values for this examination

Anatomical Coverage

Coverage

Entire liver must be covered

Adult Renal Study

(This is not for renal stone evaluation or follow-up)

Technique Parameters

Required Series

Non-contrast*** and IV contrast enhanced timed to the corticomedullary phase of renal opacification. In addition, an excretory (delayed) phase is acceptable. 

Reconstructed Slice Width

≤ 3 mm through the kidneys; the slice width should be the same in all series

Reconstruction Algorithm

Standard or soft tissue (or appropriate body kernel)

Oral Contrast

Not required

CTDIvol

There are no reference values for this examination

Anatomical Coverage

Coverage

Must include diaphragm to below both kidneys

Adult Pancreas Study

Technique Parameters

Required Series

Non-contrast*** and IV contrast enhanced

Reconstructed Slice Width

≤ 3 mm

Reconstruction Algorithm

Standard or soft tissue (or appropriate body kernel)

Oral Contrast

Oral contrast material must be present with barium or neutral (water) contrast agents 

CTDIvol

There are no reference values for this examination

Anatomical Coverage

Coverage

Must include entire pancreas



Revision History for this Article

Date

Section

Description of Revision(s)

12-12-19

All

Article created; FAQs incorporated; No criteria changes

3-6-2020Adult Abdomen, Adult PancreasAdded (water) to neutral contrast agents
6-17-2020Adult Renal StudyRemoved Reconstructed Spacing field
2-24-2021Adult Renal StudyClarified required series
3-30-2021
Added information to important notice about submitted the primary reconstructed images
4-20-2021Adult Renal StudyEdited anatomic coverage 
6-30-2021Adult Abdomen Added note that this is a uniphasic study. 
12-21-2021Adult AbdomenEdited oral contrast recommendation
11-10-2022All
Added important note regarding post processed non-contrast series for DE units



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