發(fā)布時間：2018-05-30 15:46

  本文選題：亞段 + 分界　； 參考：《大連醫(yī)科大學》2010年碩士論文

【摘要】： 目的：通過研究在體肝臟的CT重建圖像,確定肝臟左內(nèi)側(cè)葉Ⅳa、Ⅳb亞段間的分界及走行在兩亞段之間的肝靜脈屬支。 方法：采用容積再現(xiàn)(volume rendering, VR)和最大密度投影(maximum intensity pro-jection, MIP)兩種方法,對49例在體肝臟CT掃描圖像進行肝內(nèi)血管的三維重建,尋找肝臟左內(nèi)側(cè)葉IVa、IVb兩亞段間分界及走行在段間裂內(nèi)的肝靜脈屬支及其匯入部位。 結(jié)果：作為兩亞段分界標志的肝靜脈屬支,在VR和MIP兩種重建圖像上的出現(xiàn)率分別為14.29%和87.75%,因此采用MIP法重建出的三維圖像對于尋找肝內(nèi)細小血管分支更適用。該支肝靜脈屬支的匯入部位可分為以下三種情況：①匯入肝中靜脈主干有24例,占55.81%；②匯入肝中靜脈左根有1 6例,占37.21%；③匯入肝左靜脈有3例,占6.98%。 結(jié)論：通過CT三維重建圖像可以確定肝臟IVa、IVb兩亞段間分界,并且走行在該分界位置的肝靜脈屬支可作為兩亞段間的分界標志。本研究的結(jié)果可以為臨床上涉及肝臟左內(nèi)側(cè)葉IVa、IVb亞段的肝臟外科手術提供形態(tài)學依據(jù)。
[Abstract]:Objective: to study the CT reconstruction images of the liver in vivo and determine the dividing line between the four and four b subsegments of the left medial lobe of the liver and the branches of the hepatic vein running between the two subsegments. Methods: volume rendering (VRV) and maximum intensity pro-jection (MIPP) were used to reconstruct intrahepatic vessels in 49 cases of liver by CT scanning. To find the boundary between the two subsegments of the left medial lobe of the liver, and to find the branches of the hepatic vein and their entrances in the intersegmental fissure. Results: the occurrence rate of hepatic vein branch in VR and MIP reconstruction images was 14.29% and 87.75%, respectively. Therefore, the 3D images reconstructed by MIP method were more suitable for finding the branches of small vessels in the liver. The confluence site of this branch can be divided into the following three situations: 1 into the main trunk of the middle hepatic vein: 24 cases, accounting for 55.81%, 16 cases into the left root of the middle hepatic vein, 3 cases into the left hepatic vein, and 3 cases into the left hepatic vein, accounting for 6.98%. Conclusion: the boundary between the two subsegments can be determined by 3D CT reconstruction, and the hepatic vein branch walking at this boundary can be used as the dividing mark between the two subsegments. The results of this study may provide a morphological basis for the surgical operation of the left medial lobe of the liver involving the IVaI IVb subsegment of the left medial lobe of the liver.
【學位授予單位】：大連醫(yī)科大學
【學位級別】：碩士
【學位授予年份】：2010
【分類號】：R322;R813

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