Patient 2 MRI

CTs and MRIs were both acquired under radiotherapy immobilization protocols with patients in the treatment position.
CT scans were acquired on one of four machine models (LightSpeed RT16, GE Medical Systems, Waukesha, WI, USA; Brilliance 64 or Brilliance Big Bore, Philips Healthcare, Cambridge, MA, USA; SOMATOM Definition Edge, Siemens, Washington D.C., USA) using x-ray tube currents between 208 – 434 mA at 120 kVp. All scans have slice thicknesses of either 2.5 or 3 mm, with 2.5 or 3 mm of space between slices. Sections are displayed in 512 x 512 pixel matrices and were reconstructed in diameters between 500 – 600 mm.
MRI scans were acquired in one of two machine models (Discovery MR750, GE Medical Systems, Waukesha, WI, USA; Ingenia, Philips Healthcare, Cambridge, MA, USA) in 3 Tesla magnetic fields with echo times between 97.72 – 101.82 milliseconds. All scans have slice thicknesses of 2.5 mm, with 2.5 or 4 mm of space between slices. Sections are displayed in 512 x 512 pixel matrices and were reconstructed in 256 mm diameters.

计算机断层扫描（Computed Tomography，CT）与磁共振成像（Magnetic Resonance Imaging，MRI）扫描均按照放射治疗体位固定方案进行采集，采集时患者处于放射治疗体位。
CT扫描采用四款机型之一完成采集（具体机型包括：LightSpeed RT16，通用电气医疗系统公司，美国威斯康星州沃基肖；Brilliance 64或Brilliance Big Bore，飞利浦医疗保健公司，美国马萨诸塞州剑桥；SOMATOM Definition Edge，西门子公司，美国华盛顿特区），扫描参数为X射线管电流208–434 mA，管电压120 kVp。所有扫描的层厚均为2.5 mm或3 mm，层间距为2.5 mm或3 mm。图像以512×512像素的矩阵显示，重建视野直径为500–600 mm。
MRI扫描采用两款机型之一完成采集（具体机型包括：Discovery MR750，通用电气医疗系统公司，美国威斯康星州沃基肖；Ingenia，飞利浦医疗保健公司，美国马萨诸塞州剑桥），扫描在3特斯拉的磁场环境下进行，回波时间为97.72–101.82毫秒。所有扫描的层厚均为2.5 mm，层间距为2.5 mm或4 mm。图像以512×512像素的矩阵显示，重建视野直径为256 mm。