腦腫瘤脊髓腫瘤CTMRI課件

1、腦腫瘤、脊髓腫瘤CT、MRTumors腫瘤Gliomas 膠質瘤Meningiomas 腦膜瘤Pituitary tumor 垂體瘤Acoustic neurinoma 聽神經瘤Craniopharyngioma 顱咽管瘤Metastatic tumors 轉移瘤Etc 等等Gliomas膠質瘤Astrocytic tumors Oligodendroglial tumors Ependymal cell tumors Mixed gliomas AstrocytomaLow-gradeAstrocytomaGBMGBMGBMOligodendrogliomaOligodendroglioma

2、OligodendrogliomaEpendymomaEpendymomaEpendymomaDiagnosis and differential diagnosis for glioma膠質瘤的診斷和鑒別診斷Meningioma 腦膜瘤Meningiomas represent 15% of all brain tumorsMeningiomas are more common in women than in men, with a male-to-female ratio of 1:2Meningiomas have a predilection to occur from the th

3、ird to sixth decades of life, with a peak incidence occurring in individuals aged approximately 45 years.MeningiomaMeningiomaMeningiomaMeningiomaMeningiomaPituitary Adenoma 垂體瘤Tumour arising from the cells of the pituitary gland. Microadenoma (10 mm)Pituitary adenomas are usually benign tumours, and

4、 pituitary carcinomas are very rare. Pituitary Adenoma垂體瘤Coronal and sagittal thin slice T1-weighted images, without and with contrast enhancement. Microadenomas are usually iso-hypointense and are particularly well seen after gadolinium injection when the pituitary gland enhances homogeneously. The

5、 direction of growth of macroadenoma is well appreciated and involvement of chiasm and cavernous sinus may be detected.Microadenoma, pituitaryMicroadenoma, pituitaryDelay a few minutesAcoustic neurinoma 聽神經瘤Plain film CT MRICraniopharyngioma 顱咽管瘤Craniopharyngiomas are typically found in the first tw

6、o decades of life and usually have both solid and cystic components. Cyst content may have different appearances but usually appears as machine-oil and contains characteristic suspended cholesterol crystals. Calcifications are present in the vast majority of these tumours. Metastatic tumors 轉移瘤Sex: primary tumor. Lung cancer is the most common source of metastases in male patients, while breast cancer is the most common source in female patients. Age: primary systemic tumors. Most brain me