Variant 1: Osteoporosis screening or initial imaging of clinically suspected low bone mineral density.
Variant 2: Follow-up imaging of patients demonstrated to have risk for fracture or surveillance of established low bone mineral density.
Variant 3: Follow-up imaging. Patients with T-scores less than −1.0 (by DXA) and one or more of the following: 1) Females equal to or greater than 70 years of age or males equal to or greater than 80 years of age; 2) Historical height loss greater than 4 cm (greater than 1.5 inches); 3) Self-reported but undocumented prior vertebral fracture; 4) Glucocorticoid therapy equivalent to equal to or greater than 5 mg of prednisone or equivalent per day for equal to or greater than 3 months.
Variant 4: Initial imaging for premenopausal females or males less than 50 years of age. Individual with risk factors that could alter bone mineral density.
Variant 5: Premenopausal females with risk factors. Males less than 50 years of age with risk factors. Follow-up to low bone mineral density.
Variant 6: Males and females greater than or equal to 50 years of age. Suspected osteoporosis. Advanced degenerative changes of the spine with or without scoliosis, or other conditions that may spuriously elevate BMD. Initial imaging.
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.