Claussen C, Lohkamp F, Rebien W, Kuttig H
Strahlentherapie. 1977 Nov;153(11):744-53.
The axial computed tomography of the skull has become an important part of the neuroradiologic diagnostics. The intracranial CT diagnosis is completed by the coronal sections which is used in particular in case of processes in the posterior cranial fossa and its differentiation of the supra- and infratentorial dimensions and in order to localize tumors in the sella region. The accurate determination of the tumor volume and the para-, supra-, and retrosellar dimensions makes possible an exact operation and irradiation planning. Solid, cystic and calcified tissues of the craniopharyngioma can be delimited. The quantitative evaluation by means of a computed tomogram of a tumor reduction obtained by surgery and irradiation with ultrahard X-rays (42 MV) with a target volume dose of about 5000 rd is illustrated by two examples. Under the above mentioned radiotherapeutic conditions, one partially resected craniopharyngioma with cystic, calcified and solid tissues showed a diminuation of the tumor volume of 60%, whereas the volume of a craniopharyngioma consisting of solid and calcified parts which had not been operated upon was reduced by about 40% two weeks after the end of the radiotherapy.
头颅轴向计算机断层扫描已成为神经放射诊断的重要组成部分。颅内CT诊断通过冠状面扫描完成，冠状面扫描尤其用于后颅窝病变的诊断，以及区分幕上和幕下区域，并用于确定鞍区肿瘤的位置。准确测定肿瘤体积以及鞍旁、鞍上和鞍后区域的范围，有助于进行精确的手术和放疗计划。颅咽管瘤的实性、囊性和钙化组织能够被区分出来。通过两个例子说明了利用计算机断层扫描对手术和用超硬X射线（42兆伏）放疗（靶区剂量约5000拉德）后肿瘤缩小情况进行的定量评估。在上述放疗条件下，一例部分切除的伴有囊性、钙化和实性组织的颅咽管瘤，肿瘤体积缩小了60%；而另一例由实性和钙化部分组成且未接受手术的颅咽管瘤，在放疗结束两周后体积缩小了约40%。
