Patient 11 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（CT）与磁共振成像（MRI）均按照放疗固定方案采集，采集时患者处于治疗体位。CT扫描采用以下四款机型之一：美国威斯康星州沃基肖市GE Medical Systems的LightSpeed RT16、美国马萨诸塞州剑桥市Philips Healthcare的Brilliance 64或Brilliance Big Bore，以及美国华盛顿特区Siemens的SOMATOM Definition Edge；扫描参数设置为X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。影像以512×512像素矩阵显示，重建视野直径为500–600 mm。MRI扫描采用以下两款机型之一：美国威斯康星州沃基肖市GE Medical Systems的Discovery MR750，以及美国马萨诸塞州剑桥市Philips Healthcare的Ingenia；扫描磁场强度为3特斯拉，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。影像以512×512像素矩阵显示，重建视野直径为256 mm。