目的测量经骶椎后方骶髂关节螺钉(sacroiliac screw passing the back of sacrum,SISPTBOS)固定的相关解剖参数,为临床应用提供依据。方法分析32例骨盆正常的成人三维CT重建图像,观察SISPTBOS钉道范围,采用CT数字重建技术模拟植入SISPTB...目的测量经骶椎后方骶髂关节螺钉(sacroiliac screw passing the back of sacrum,SISPTBOS)固定的相关解剖参数,为临床应用提供依据。方法分析32例骨盆正常的成人三维CT重建图像,观察SISPTBOS钉道范围,采用CT数字重建技术模拟植入SISPTBOS,测量钉道有关解剖参数,包括钉道长度(L)、进针点与S1上关节中央的距离(M1)、出针点与髋臼后上缘的距离(M2)、前倾角(e)、外倾角(f)、矢状面安全角(a)、冠状面安全角(b)、矢状面钉道最小直径(d1)和冠状面钉道最小直径(d2)。结果钉道内侧壁为弓状线,外侧壁为椎管后外侧壁和髂骨外层,下壁为S1骶孔与坐骨切迹的连线,上壁为骶骨翼斜坡、骶髂关节表面和大骨盆底部。L为(11.90±1.62)cm,M1为(2.07±1.40)mm,M2为(4.78±2.57)mm,e为(57.97±4.28)°,f为(54.89±5.13)°,a为(11.45±2.73)°,b为(7.46±1.34)°,d1为(8.57±0.99)mm,d2为(6.75±0.84)mm。男女比较,仅e和f存在显著性差异(P<0.05)。结论可选择直径5.0~6.0 mm、长度9~10 cm螺钉作为SISPTBOS固定。该通道植入螺钉可行,较为安全。展开更多
In this study, the time-dependent changes on dynamic computed tomograph (CT) of radiation-induced liver injury in gastric cancer patients was examined.The CT images of 52 gastric cancer patients who had received chemo...In this study, the time-dependent changes on dynamic computed tomograph (CT) of radiation-induced liver injury in gastric cancer patients was examined.The CT images of 52 gastric cancer patients who had received chemoradiotherapies were reviewed on the PACS system.Dynamic CT scan was performed in all the subjects.Our results showed that 18 patients were found to have radiation-induced liver injury.The CT findings of radiation-induced liver injury in gastric cancer patients tend to show up one month after radiation treatment.The damaged area was of low density on all three phases, and then it was enhanced on portal vein phase or delay phase.The focal radiation reaction of liver without basic disease vanished 9-11 months later after treatment.We are led to conclude that dynamic CT is of help in the diagnosis of CRT-induced liver injury, and it may be the method of choice for following up the whole course of the CRT-induced liver injury, i.e., form hepatic damage to healing.The classification of CT findings we recommend can avoid the influence of technological factors, and thereby serve as a better guide for treatment of CRT-induced liver injury.展开更多
文摘目的测量经骶椎后方骶髂关节螺钉(sacroiliac screw passing the back of sacrum,SISPTBOS)固定的相关解剖参数,为临床应用提供依据。方法分析32例骨盆正常的成人三维CT重建图像,观察SISPTBOS钉道范围,采用CT数字重建技术模拟植入SISPTBOS,测量钉道有关解剖参数,包括钉道长度(L)、进针点与S1上关节中央的距离(M1)、出针点与髋臼后上缘的距离(M2)、前倾角(e)、外倾角(f)、矢状面安全角(a)、冠状面安全角(b)、矢状面钉道最小直径(d1)和冠状面钉道最小直径(d2)。结果钉道内侧壁为弓状线,外侧壁为椎管后外侧壁和髂骨外层,下壁为S1骶孔与坐骨切迹的连线,上壁为骶骨翼斜坡、骶髂关节表面和大骨盆底部。L为(11.90±1.62)cm,M1为(2.07±1.40)mm,M2为(4.78±2.57)mm,e为(57.97±4.28)°,f为(54.89±5.13)°,a为(11.45±2.73)°,b为(7.46±1.34)°,d1为(8.57±0.99)mm,d2为(6.75±0.84)mm。男女比较,仅e和f存在显著性差异(P<0.05)。结论可选择直径5.0~6.0 mm、长度9~10 cm螺钉作为SISPTBOS固定。该通道植入螺钉可行,较为安全。
文摘In this study, the time-dependent changes on dynamic computed tomograph (CT) of radiation-induced liver injury in gastric cancer patients was examined.The CT images of 52 gastric cancer patients who had received chemoradiotherapies were reviewed on the PACS system.Dynamic CT scan was performed in all the subjects.Our results showed that 18 patients were found to have radiation-induced liver injury.The CT findings of radiation-induced liver injury in gastric cancer patients tend to show up one month after radiation treatment.The damaged area was of low density on all three phases, and then it was enhanced on portal vein phase or delay phase.The focal radiation reaction of liver without basic disease vanished 9-11 months later after treatment.We are led to conclude that dynamic CT is of help in the diagnosis of CRT-induced liver injury, and it may be the method of choice for following up the whole course of the CRT-induced liver injury, i.e., form hepatic damage to healing.The classification of CT findings we recommend can avoid the influence of technological factors, and thereby serve as a better guide for treatment of CRT-induced liver injury.
