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目的:了解肾静脉以上段下腔静脉左右径、前后径及其与冠状面成角、肝后段下腔静脉长度。方法:利用100例患者腹部CT增强图像,分别测量下腔静脉右心房入口处的左右径和前后径、第一肝门平面及肾盂平面的左右径、前后径及它们与冠状面所成角度,肝后段下腔静脉长度。患者年龄19~81岁,平均年龄为50.9岁。结果:第一肝门平面左右径和前后径与冠状面所成角度分别为(43.4±12.0)°、(46.8±11.8)°;肾盂平面左右径和前后径与冠状面所成角度分别为(37.8±9.8)°、(50.6±10.9)°。以上两个平面左右径与冠状面所成角度差异具有显著性意义(t=3.8,P=0.000),以上两个平面前后径与冠状面所成角度差异也具有显著性意义(t=-2.36,P=0.019)。右心房入口处的左右径和前后径分别为(28.4±4.2)mm、(19.8±3.5)mm;第一肝门平面左右径和前后径分别为(25.6±3.7)mm、(18.2±3.6)mm;肾盂平面的左右径和前后径分别为(25.7±4.6)mm、(15.4±3.2)mm。单因素方差分析表明3个不同平面的下腔静脉左右径之间差异存在显著性意义(F=15.0,P=0.000);3个不同平面的下腔静脉前后径之间差异也存在显著性意义(F=40.9,P=0.000)。肝后段下腔静脉长度为(58.9±10.0)mm。结论:对肾静脉以上段不同平面下腔静脉径线及其与冠状面成角、肝后段下腔静脉长度的测量结果,为下腔静脉有关的介入诊疗提供参考数据。
OBJECTIVE: To understand the left and right diameter, anteroposterior diameter of the inferior vena cava above the renal vein and its angle with the coronal plane, the length of the inferior vena cava of the posterior segment of the liver. Methods: 100 cases of patients with abdominal CT enhanced images were measured at the entrance to the right atrium of the IVC left and right and anteroposterior diameter, the first hepatic portal plane and the renal pelvis plane left and right diameter, anteroposterior diameter and angle with the coronal plane, Posterior hepatic inferior vena cava length. Patients aged 19 to 81 years, the average age of 50.9 years old. Results: The angles of the left and right hepatic plane and the anteroposterior diameter of the first hepatic portal were (43.4 ± 12.0) ° and (46.8 ± 11.8) ° with respect to the coronal plane respectively. The angles of the left, right and anteroposterior diameter of the renal pelvis and the coronal plane were ( 37.8 ± 9.8) °, (50.6 ± 10.9) °. There was also significant difference between the above two plane angles and the coronal plane (t = 3.8, P = 0.000). The difference between the anterior and posterior dimensions of the above two planes and the coronal plane was also significant (t = -2.36 , P = 0.019). The diameter of the right atrium and the anteroposterior diameter of the right atrium were (28.4 ± 4.2) mm and (19.8 ± 3.5) mm, respectively. The diameter of the first hepatic portal plane and the anteroposterior diameter were (25.6 ± 3.7) mm and (18.2 ± 3.6) mm; the diameter of the renal pelvis and the anteroposterior diameter were (25.7 ± 4.6) mm and (15.4 ± 3.2) mm, respectively. One-way analysis of variance showed that there was significant difference between the left and right IVC of three different planes (F = 15.0, P = 0.000). There was also a significant difference in the anteroposterior diameter of IVC among the three different planes (F = 40.9, P = 0.000). The posterior hepatic inferior vena cava length was (58.9 ± 10.0) mm. Conclusion: The results of measurement of the inferior vena cava line in the superior segment of the renal vein and the length of the inferior vena cava of the posterior segment of the coronal plane, provide reference data for interventional diagnosis and treatment of inferior vena cava.