(A) An 88-year-old woman with fracture of the L2 vertebral body (arrow) demonstrates diffusely decreased BMD with exception of the level of the compression.

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(A) An 88-year-old woman with fracture of the L2 vertebral body (arrow) demonstrates diffusely decreased BMD with exception of the level of the compression fracture. (B) A patient with avascular necrosis of the left femoral head (arrow). The femoral head appears dense and is associated with flattening and deformity. (C)DEXA image in a patient status post vertebroplasty of L2 and L3 with introduction of radiopaque cement preparation (arrows)

Sclerotic metastases on DEXA (arrows) Sclerotic metastases on DEXA (arrows). A 65-year-old woman, with known breast cancer (A-C), for evaluation of BMD before therapy. DEXA images of the spine (A) and hip (B) demonstrate sclerotic boney metastases, corroborated on sagittal FDG-PET/CT image (C). A 67-year-old man with Gleason 7 prostate cancer (D-F).Metastases to the spine are noted on DEXA (D), CT (E), and radionuclide bone scan (F).

A 50-year-old woman with a sclerotic L2 vertebral body, typical of Paget disease (arrow) Prior study from 5 years earlier (B) does not evidence these findings. Recent 99mTc-MDPbonescan(C) and lateral view of the lumbar spine (D) confirm presence of a pagetoid vertebral body (arrows).

66-year-old woman with vertebral fracture 66-year-old woman with vertebral fracture. Dual-energy x-ray absorptiometric image shows high-density L1 vertebral body of reduced size consistent with vertebral fracture (arrow). Lateral radiograph of lumbar spine confirms presence of fracture (arrow).

79-year-old woman with sclerotic vertebral pedicle 79-year-old woman with sclerotic vertebral pedicle. Dual-energy x-ray absorptiometric image and radiograph show dense round area overlyingL4 vertebral body (solid arrows) that turned out to be left L4 sclerotic pedicle. Cholecystectomy clips (open arrows) are evident.

65-year-old woman with enteric tube 65-year-old woman with enteric tube. DEXA image shows dense structure (arrow) superimposed over L1 vertebral body. Exclusion of L1 from analysis changed T- score from –1 for L1–L4 to – 1.2 for L2–L4.

68-year-old woman with spinal fixation 68-year-old woman with spinal fixation. DEXA image shows presence of surgical material over L4–L5 increases bone mineral density values (L3 T- score,–2.8; L4, 1.2). Exclusion of L4 changes T-score from–1.8 for L1–L4 to –2.7 for L1–L3.