RSNA2005報告：後腹膜腔鏡下腎摘出術における腎臓変位をシミュレーションする新しいCTプログラム

摘要

2005年11月27日から2005年12月2日まで，米国・ イリノイ州シカゴにおいて開催された第91回北米放射 線学会（RSNA2005）に，日本放射線技術学会の平成17年度後期国際研究集会派遣会員として参加する機会を 得たので，発表内容と学会の印象について報告しま す．%A total of 12 patients with malignant localized renal or ureteral neoplasms underwent multi-slice computed tomography. Imaging data were sent to the dedicated workstation to create volume rendering and virtual laparoscopic images of the kidney which was displaced ventrally with retroperitoneal balloon. These findings were compared with video images obtained during retroperitoneal laparoscopic nephrectomy. The kidney displacement simulator depicted all renal arteries (100% sensitivity) and 13 of 14 renal veins(93% sensitivity). Hilar anatomy, including the tumor, major vessels and their relationships were visualized as in the actual laparoscopic views. The desired portions of major vessels as well as the left adrenal and gonadal veins visualized with this system completely corresponded with the actual laparoscopic images during surgery. The kidney displacement simulator is useful to foresee desired portions of major vessels and branched small vessels such as the adrenal or gonadal veins in advance of surgery. It is thus able to guide surgeons and reduce operative risks and possible complications.