Fig. 9From: Low-dose whole-spine imaging using slot-scan digital radiography: a phantom studyWhole-spine images at a beam-hardening (BH) filter thickness of 0.3 mm. The tube currents were 400, 320, 250, and 125 mA. The tube voltage was 110 kV, and the exposure time was 1.4 ms. The lumbar spine and pelvic region are obscured at a tube current of 125 mA and can be observed at tube currents of 250, 320, and 400 mABack to article page