Segmental anatomy of the liver: Poor correlation with CT
Segmental anatomy of the liver: Poor correlation with CT
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DOI：
10.1148/radiology.206.1.9423665
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发表时间：
1998-01-01
期刊：
影响因子：
19.7
通讯作者：
Gailloud, P
中科院分区：
文献类型：
--
作者：
Fasel, JHD;Selle, D;Gailloud, P
目的：定性和定性地评价目前肝节段和亚节段解剖的放射学描述方法。材料与方法：对10例肝脏血管铸型进行螺旋CT检查。肝节段和亚节段解剖根据常规放射学实践指南在CT扫描上确定。将CT解剖结果与解剖检查所见的真实解剖区域进行比较。对10个肝脏中的5个进行了定性评估。结果：对于肝脏的边缘（颅部和尾部）部分，轴向CT扫描显示的肝脏区域平均（+/- 1标准差）为17.3% +/- 6.5，归因于不正确的亚段。对于中心区（门静脉左右分支附近），该误差为51.6% +/- 19.9。以绝对数字表示，轴向CT扫描误差达40 mm。结论：肝内门静脉区域的放射学测定必须修订。目前使用的间接地标对于正确的描绘是不可靠的。只有考虑门静脉分布模式的手术，包括外周分支，才能正确描述复杂多变的解剖现实。
PURPOSE: To evaluate qualitatively and qualitatively the current procedures for radiologic delineation of the segmental and subsegmental anatomy of the liver.MATERIALS AND METHODS: Vascular casts of 10 livers were examined with helical computed tomography (CT). Liver segmental and subsegmental anatomy were determined on the CT scans according to customary radiologic practice guidelines. CT anatomic findings were compared with authentic anatomic territories seen at anatomic examination. The differences were assessed qualitatively in five of the 10 livers.RESULTS: For the marginal (cranial and caudal) portions of the liver, an average (+/- 1 standard deviation) of 17.3% +/- 6.5 of the hepatic area visualized on axial CT scans was attributed to an incorrect subsegment. For the central zones (those adjacent to the right and left branches of the portal vein), this error amounted to 51.6% +/- 19.9. Expressed in absolute numbers, the error amounted to 40 mm on axial CT scans.CONCLUSION: The radiologic determination of portal venous territories within the liver must be revised. The indirect landmarks currently used are not reliable for proper delineation. Only procedures that account for the portal venous distribution pattern, including peripheral branches, will result in correct depiction of the complex and variable anatomic reality.