颅后窝肿瘤CT扫描因骨嵴因素易产生伪影,给病变诊断带来一定困难,为提高颅后窝肿瘤CT表现的认识,减少误漏诊,现将我院1992年5月至1993年5月间资料较完整的48例颅后窝肿瘤作一回顾性分析,现报告如下: 资料与方法 1.我们使用美国产GE8800CT/T全身扫描机,层厚和层距均为10mm,增强药物用76％泛影葡胺,均加用50％G.S和地塞米松以防止过敏和休克。 2.48例中,男性20例,女性28例,最小年龄1岁半,最大年龄75岁,40岁以上占20例,48例均经手 Posterior fossa tumor CT scan due to bone artifact prone to artifacts, to the lesion diagnosis to bring some difficulties, to improve the posterior fossa tumor CT performance awareness, reduce misdiagnosis, now our hospital from May 1992 to 1993 5 Month data more complete 48 cases of posterior fossa tumors for a retrospective analysis, are reported as follows: Materials and Methods 1. We use the United States GE8800CT / T whole body scanner, layer thickness and layer spacing are 10mm, enhance the use of drugs 76% diatrizoate, both plus 50% GS and dexamethasone to prevent allergies and shock. 2.48 cases, 20 males and 28 females, the youngest age of 1 year and a half, the maximum age of 75 years old, 40 years of age accounted for 20 cases, 48 ​​cases were handled