The QCT measurement was performed using a standard clinical CT scanner and a set of calibration phantoms. The first step was to scan the calibration phantoms. The rectangular phantom was placed flat on the scan table and the torso phantom was placed upon it. The scan table was adjusted so that the center of the torso phantom was at the isocenter of the scanner (all images in the test were taken with the scan table a specific height). Three axial images were taken of the phantoms at the center of the torso phantom. The torso phantom was then removed and the subject was asked to lie supine with his/her lumbar spine over the rectangular calibration phantom with their feet elevated and oriented toward the scanner. A scout scan was taken for positioning (a sagittal image through the center of the spine). A series of axial images was then taken covering the vertebra L1 and L2 (from the endplate of T12 to the endplate of L3). The subject was then repositioned so the phantom was beneath his/her hips and a coronal scout scan was then taken. A series of axial scans were then taken covering the region from 1 cm superior to the femoral head to 5mm inferior to the lesser trochanter.
This experiment has concluded. Summarized results for this test aren't available.