American College of Radiology
ACR Appropriateness Criteria®

Suspected Lower Extremity Deep Vein Thrombosis

Variant 1: Suspected lower extremity deep vein thrombosis. Initial imaging.
Procedure Appropriateness Category SOE Adult RRL Peds RRL Rating Median Final Tabulations
1 2 3 4 5 6 7 8 9
US duplex Doppler lower extremity Usually appropriate O 0 mSv O 0 mSv [ped] 9 9 1 0 0 0 0 0 0 0 14
CT venography lower extremity and pelvis with IV contrast May be appropriate ☢☢☢ 1-10 mSv 6 6 1 0 0 2 2 5 4 1 0
MR venography lower extremity and pelvis without and with IV contrast May be appropriate O 0 mSv O 0 mSv [ped] 6 6 0 0 0 1 0 7 6 1 0
MR venography lower extremity and pelvis without IV contrast May be appropriate O 0 mSv O 0 mSv [ped] 5 5 0 1 2 4 4 4 0 0 0
Catheter venography pelvis and lower extremity Usually not appropriate ☢☢☢ 1-10 mSv 3 3 2 2 4 2 3 2 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.