American College of Radiology
ACR Appropriateness Criteria®

Suspected Infective Endocarditis

Variant 1: Suspected Infective Endocarditis
Procedure Appropriateness Category SOE Adult RRL Peds RRL Rating Median Final Tabulations
1 2 3 4 5 6 7 8 9
US echocardiography transthoracic resting Usually appropriate O 0 mSv O 0 mSv [ped] 9 n/a 0 0 0 0 0 0 0 0 0
US echocardiography transesophageal Usually appropriate O 0 mSv O 0 mSv [ped] 8 n/a 0 0 0 0 0 0 0 0 0
X-ray chest Usually appropriate ☢ <0.1 mSv ☢ <0.03 mSv [ped] 8 n/a 0 0 0 0 0 0 0 0 0
CT heart function and morphology with IV contrast May be appropriate ☢☢☢☢ 10-30 mSv 6 n/a 0 0 0 0 0 0 0 0 0
MRI heart function and morphology without IV contrast May be appropriate O 0 mSv O 0 mSv [ped] 6 n/a 0 0 0 0 0 0 0 0 0
MRI heart function and morphology without and with IV contrast May be appropriate O 0 mSv O 0 mSv [ped] 6 n/a 0 0 0 0 0 0 0 0 0
CT chest with IV contrast May be appropriate ☢☢☢ 1-10 mSv ☢☢☢☢ 3-10 mSv [ped] 5 n/a 0 0 0 0 0 0 0 0 0
Arteriography coronary with ventriculography May be appropriate ☢☢☢ 1-10 mSv 5 n/a 0 0 0 0 0 0 0 0 0
CTA coronary arteries with IV contrast May be appropriate ☢☢☢ 1-10 mSv 5 n/a 0 0 0 0 0 0 0 0 0
FDG-PET/CT skull base to mid-thigh May be appropriate ☢☢☢☢ 10-30 mSv ☢☢☢☢☢ 10-30 mSv [ped] 5 n/a 0 0 0 0 0 0 0 0 0
In-111 WBC scan heart Usually not appropriate ☢☢☢☢ 10-30 mSv 3 n/a 0 0 0 0 0 0 0 0 0
Fluoroscopy heart Usually not appropriate ☢☢ 0.1-1mSv 3 n/a 0 0 0 0 0 0 0 0 0
CT chest without and with IV contrast Usually not appropriate ☢☢☢ 1-10 mSv ☢☢☢☢ 3-10 mSv [ped] 2 n/a 0 0 0 0 0 0 0 0 0
CT chest without IV contrast Usually not appropriate ☢☢☢ 1-10 mSv ☢☢☢☢ 3-10 mSv [ped] 1 n/a 0 0 0 0 0 0 0 0 0
Appendix Key

A more complete discussion of the items presented below can be found by accessing the supporting documents at the designated hyperlinks.

Appropriateness Category:The panel’s recommendation for a procedure based on the assessment of the risks and benefits of performing the procedure for the specified clinical scenario.

SOE: Strength of Evidence. The assessment of the amount and quality of evidence found in the peer reviewed medical literature for an appropriateness recommendation.

  • References: The citation number and PMID for the reference(s) associated with the recommendation.
  • Study Quality: The assessment of the quality of an individual reference based on the number of study quality elements described in the reference.

RRL: Relative Radiation Level. A population based assessment of the amount of radiation a typical patient may be exposed to during the specified procedure.

Rating: The final rating (1-9 scale) for the procedure as determined by the panel during rating rounds.

Median: The median rating (1-9 scale) for the procedure as determined by the panel during rating rounds.

Final tabulations: A histogram showing the number of panel members who rated the procedure as noted in the column heading (ie, 1, 2, 3, etc.).

Additional supporting documents about the AC methodology and processes can be found at www.acr.org/ac.