ABSTRACT
Undissolved calcium (Ca) tablets in the gastrointestinal tract at the time of a dual-energy X-ray absorptiometry (DXA) scan could conceivably affect the accuracy of the lumbar spine bone mineral density (BMD) determination. We studied phantoms and volunteers to determine the effect of Ca tablets overlying bone, Ca tablets in the soft-tissue field, and Ca tablets overlapping both bone and soft tissue. For L1-4, a 500-mg Ca tablet taped to the phantom surface or the skin of volunteers resulted in Subject(s)
Absorptiometry, Photon
, Bone Density/drug effects
, Calcium/pharmacology
, Lumbar Vertebrae/physiology
, Adult
, Artifacts
, Female
, Humans
, Lumbar Vertebrae/diagnostic imaging
, Lumbar Vertebrae/drug effects
, Male
