{"title":"脑膜瘤的瘤周水肿:增强CT研究。","authors":"U Ito, H Tomita, O Tone, H Masaoka, B Tominaga","doi":"10.1007/978-3-7091-9334-1_97","DOIUrl":null,"url":null,"abstract":"<p><p>The propagation of extravasated contrast medium around 6 supratentorial meningiomas with peritumoral white matter of low density (PWL) of Lanksch II-III was investigated by repeated CT scanning at 4 h intervals, following a 1 h drip infusion of 200 ml of Iopamidol. The volume of the expanding peritumoral contrast enhancement was calculated according to a method previously described. By calculating the increase in volume from the first to the second scan, and from the second to third, we derived the rate of edema formation as well as the resolution rate of edema in the PWL. The surface area of the entire tumor (TS) and area of tumor surface facing the PWL (LS) were calculated by summating the surface areas of all CT slices, each area of which was derived from the measured length of the entire circumference of the tumor and circumference of the tumor facing the PWL, respectively, multiplied by the slice thickness of 0.5 cm. The volume of PWL, edema formation rate of entire tumor, and tumor volume x LS/TS were well correlated with each other. We concluded that the severity of peritumoral edema in meningiomas depends on the size of the tumor and the extent of tumor surface contact with the PWL.</p>","PeriodicalId":75393,"journal":{"name":"Acta neurochirurgica. Supplementum","volume":"60 ","pages":"361-4"},"PeriodicalIF":0.0000,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":"{\"title\":\"Peritumoral edema in meningioma: a contrast enhanced CT study.\",\"authors\":\"U Ito, H Tomita, O Tone, H Masaoka, B Tominaga\",\"doi\":\"10.1007/978-3-7091-9334-1_97\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The propagation of extravasated contrast medium around 6 supratentorial meningiomas with peritumoral white matter of low density (PWL) of Lanksch II-III was investigated by repeated CT scanning at 4 h intervals, following a 1 h drip infusion of 200 ml of Iopamidol. The volume of the expanding peritumoral contrast enhancement was calculated according to a method previously described. By calculating the increase in volume from the first to the second scan, and from the second to third, we derived the rate of edema formation as well as the resolution rate of edema in the PWL. The surface area of the entire tumor (TS) and area of tumor surface facing the PWL (LS) were calculated by summating the surface areas of all CT slices, each area of which was derived from the measured length of the entire circumference of the tumor and circumference of the tumor facing the PWL, respectively, multiplied by the slice thickness of 0.5 cm. The volume of PWL, edema formation rate of entire tumor, and tumor volume x LS/TS were well correlated with each other. We concluded that the severity of peritumoral edema in meningiomas depends on the size of the tumor and the extent of tumor surface contact with the PWL.</p>\",\"PeriodicalId\":75393,\"journal\":{\"name\":\"Acta neurochirurgica. Supplementum\",\"volume\":\"60 \",\"pages\":\"361-4\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1994-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"13\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta neurochirurgica. Supplementum\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1007/978-3-7091-9334-1_97\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta neurochirurgica. Supplementum","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/978-3-7091-9334-1_97","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 13
摘要
6例膜上脑膜瘤伴Lanksch II-III型低密度白质(PWL),滴注200 ml Iopamidol 1 h后,每隔4 h重复CT扫描,观察造影剂外渗在瘤周围的增殖情况。根据先前描述的方法计算扩大的肿瘤周围对比度增强的体积。通过计算从第一次扫描到第二次扫描,从第二次扫描到第三次扫描的体积增加,我们得出了PWL中水肿形成的速率以及水肿的分辨率。整个肿瘤的表面积(TS)和面向PWL的肿瘤表面面积(LS)通过将所有CT切片的表面积相加计算,每个面积分别由测量到的肿瘤的整个周长和面向PWL的肿瘤周长乘以0.5 cm的切片厚度得出。PWL体积、整个肿瘤水肿形成率、肿瘤体积x LS/TS相关性较好。我们得出结论,脑膜瘤瘤周水肿的严重程度取决于肿瘤的大小和肿瘤表面与PWL接触的程度。
Peritumoral edema in meningioma: a contrast enhanced CT study.
The propagation of extravasated contrast medium around 6 supratentorial meningiomas with peritumoral white matter of low density (PWL) of Lanksch II-III was investigated by repeated CT scanning at 4 h intervals, following a 1 h drip infusion of 200 ml of Iopamidol. The volume of the expanding peritumoral contrast enhancement was calculated according to a method previously described. By calculating the increase in volume from the first to the second scan, and from the second to third, we derived the rate of edema formation as well as the resolution rate of edema in the PWL. The surface area of the entire tumor (TS) and area of tumor surface facing the PWL (LS) were calculated by summating the surface areas of all CT slices, each area of which was derived from the measured length of the entire circumference of the tumor and circumference of the tumor facing the PWL, respectively, multiplied by the slice thickness of 0.5 cm. The volume of PWL, edema formation rate of entire tumor, and tumor volume x LS/TS were well correlated with each other. We concluded that the severity of peritumoral edema in meningiomas depends on the size of the tumor and the extent of tumor surface contact with the PWL.