American College of Radiology
ACR Appropriateness Criteria®

Suspected Thoracic Aortic Aneurysm

Variant 1: Suspected thoracic aortic aneurysm. Initial imaging.
Procedure Appropriateness Category SOE Adult RRL Peds RRL Rating Median Final Tabulations
1 2 3 4 5 6 7 8 9
CTA chest with IV contrast Usually appropriate ☢☢☢ 1-10 mSv 9 9 0 1 0 0 0 0 1 4 7
MRA chest with IV contrast Usually appropriate O 0 mSv O 0 mSv [ped] 8 8 0 0 0 0 0 1 5 3 4
MRA chest without IV contrast Usually appropriate O 0 mSv O 0 mSv [ped] 7 7 0 0 1 0 1 2 6 1 2
CT chest without IV contrast May be appropriate ☢☢☢ 1-10 mSv ☢☢☢☢ 3-10 mSv [ped] 6 6 0 1 0 1 4 2 4 1 0
Radiography chest May be appropriate ☢ <0.1 mSv ☢ <0.03 mSv [ped] 6 6 0 1 0 0 4 2 4 0 2
US echocardiography transthoracic resting May be appropriate O 0 mSv O 0 mSv [ped] 6 6 0 0 1 0 4 2 3 1 2
MRA chest abdomen pelvis without IV contrast May be appropriate (Disagreement) O 0 mSv O 0 mSv [ped] 5 6 0 2 0 1 3 4 2 0 0
MRA chest abdomen pelvis with IV contrast May be appropriate (Disagreement) O 0 mSv O 0 mSv [ped] 5 7 0 1 1 0 1 3 5 1 0
CTA chest abdomen pelvis with IV contrast May be appropriate (Disagreement) ☢☢☢☢☢ 30-100 mSv 5 6 0 1 0 2 2 2 2 1 2
US echocardiography transesophageal May be appropriate O 0 mSv O 0 mSv [ped] 4 4 0 3 3 4 1 1 0 0 0
CT chest abdomen pelvis without IV contrast Usually not appropriate ☢☢☢☢ 10-30 mSv 3 3 1 5 3 2 0 0 1 0 0
CT chest abdomen pelvis without and with IV contrast Usually not appropriate ☢☢☢☢ 10-30 mSv 3 3 3 3 3 1 1 0 1 0 0
CT chest abdomen pelvis with IV contrast Usually not appropriate ☢☢☢☢ 10-30 mSv 3 3 1 4 3 3 0 0 0 1 0
CT chest without and with IV contrast Usually not appropriate ☢☢☢ 1-10 mSv ☢☢☢☢ 3-10 mSv [ped] 3 3 3 2 5 0 1 0 1 0 0
CT chest with IV contrast Usually not appropriate ☢☢☢ 1-10 mSv ☢☢☢☢ 3-10 mSv [ped] 3 3 1 2 4 4 0 0 1 0 0
Aortography chest abdomen pelvis Usually not appropriate ☢☢☢☢ 10-30 mSv 2 2 4 4 1 2 0 1 0 0 0
Please refer to the supporting documentation for a more complete discussion of the concepts and their definitions below.
Final Tabulations:
A histogram of the number of panel members who rated the recommendation as noted in the column heading (ie, 1, 2, 3, …etc.)
Disagree:
The variation of the individual ratings from the median rating indicates panel disagreement on the final recommendation.
References:
Lists the references associated with the recommendation
SQ:
Study Quality (1, 2, 3, 4, Good M or Inadequate M) of the references listed.
RRL:
Information on the Relative Radiation Level (RRL) designations can be found here.