胃肿瘤的诊断长期以来主要依赖于GI和GF的检查,并以纤维胃镜检查辅以活检能取得病理依据而为广大外科和肿瘤科医生所认可。但由于这两项检查仍限于腔内病变的观察而难以作肿瘤的术前分期,因而使得许多病例施行根治手术受到很大限制,部分探查术实际上相当于剖腹活检。近年来随着CT机的不断升级换代,配套设施的日臻完善,检 The diagnosis of gastric cancer has long relied mainly on the examination of GI and GF, and it has been recognized by the surgeons and oncologists for the pathological basis of fiberoptic gastroscopy assisted by biopsy. However, because these two examinations are still limited to the observation of intraluminal lesions, it is difficult to make preoperative staging of the tumors, thus making radical surgery in many cases very limited, and some exploration operations are actually equivalent to laparotomy. In recent years, with the continuous upgrading of CT machines, the supporting facilities have become increasingly sophisticated.