摘要
目的分析脑星形细胞瘤的螺旋CT平扫、增强及增强时间-密度曲线表现，以提高对该病的诊断与分级诊断能力。方法回顾性分析28例经手术病理证实的脑星形细胞瘤的CT平扫、增强及增强时间-密度曲线表现并与病理进行对照。结果28例中，脑星形细胞瘤Ⅰ级5例，Ⅱ级8例，Ⅲ级8例，Ⅳ级7例。平扫Ⅰ-Ⅱ级呈低密度或等低混杂密度，位置较表浅；增强后Ⅰ级多无强化，水肿多轻或无；11级呈断续或连续环结节形强化或片团状强化，水肿程度不一，增强时间-密度曲线Ⅰ～Ⅱ级与正常脑白质相似。Ⅲ-Ⅵ级多呈低等高混杂密度，位置较深在，水肿明显。多呈环结节型片团状伴囊变或厚壁花环状强化。Ⅲ～Ⅳ级增强时间-密度曲线与正常脑白质明显不同。结论CT平扫、增强扫描及增强时间-密度曲线各种征象对脑星形胶质细胞瘤分级诊断，有重要价值。
Objective To analyze the performance of the brain astrocytoma through spiral CT scan, enhance scan and strengthen time - density curve to improve diagnosis and the ability in diagnostic classification. Methods By analyzing Retrospectively the per- formance of the CT scan, scan enhancement and strengthening time - density curve of 28 brain astrocytoma cases and comparing it with pathology. Results In 28 cases, there are five cases in the brain astrocytoma grade Ⅰ , eight cases in grade Ⅱ , eight cases in grade Ⅲ , seven cases in grade Ⅳ. Plain scan Ⅰ - Ⅱ level takes on a low density or low mixed density and the location is more super-ficial; Enhanced grade Ⅰ has not been strengthened, and the edema is lighter; Ⅱ level is intermittent or continuous ring -shaped nodules or strengthening of the film mission, edema varying with degrees, enhanced time - density curve; Ⅰ - Ⅱ levels is similar to normal alba. Ⅲ - Ⅵ takes on a low - level high - mixed density in the deeper positions and edema is more obvious, indicating Central - Mission - shaped nodules with cystic or thick - walled flower ring enhancement, Ⅲ-Ⅳ level of enhanced time - density curve is significantly different from the normal alba. Conclusions CT plain scan, enhanced scan and the various signs of the en- hanced time - density curve play a significant role in the diagnosis classification of brain astrocytoma.
出处
《辽宁医学院学报》
CAS
2008年第4期326-328,共3页
Journal of Liaoning Medical University (LNMU) Bimonthly
