Iizuka Y, et al. - In patients treated with stereotactic body radiotherapy (SBRT) in a 16-row multi-detector CT (MDCT) vs a 320-row area-detector CT (ADCT), researchers compared the image quality and volume of a moving simulated tumor and lung tumor. In addition, tumour volumes in each respiratory phase were assessed. Via MDCT and ADCT, image data were acquired. In the phantom research, when assessed by ADCT, tumor volumes were lower and closer to the static image than by MDCT. Tumor volumes were significantly smaller and closer to the static image in each of the respiratory phases of ADCT than the corresponding volumes in MDCT. This suggests that if ADCT is used in treatment planning, the volume treated may be reduced.