This 42 year old woman with a long history of tobacco use began having headaches one month before these images were obtained. The headaches intensified during the previous week, and she noted trouble finding her words. The diagnostic workup included a chest CT scan that showed a right upper lobe lung lesion consistent with bronchogenic carcinoma, a diagnosis later confirmed by lung biopsy.

脑部影像示颅内有一大包块，外周水肿，并压迫附近的中脑结构。磁共振T2加权像将质子密度像示左颞有一巨大高强度信号区。增强后的影像可看到病变中包含囊状物质。在更高层面，可以看到左半球因肿胀沟回变窄；左右两侧半球比较请点这里。 减压术前及术后均进行X线CT增强扫描。术后效果可从术后影像中了解。颅骨从这个位置打开。 手术过程中常规放置低衰减空气袋请看这里。SPECT造影显示病变区血流十分缓慢。

Brain images show a large mass with surrounding edema, and compression of adjacent midbrain structures. The MR demonstrates the tumor as an area of high signal intensity on proton density (PD) and T2-weighted (T2) images in a large left temporal region. Contrast enhancement shows the lesion to contain a cystic component here. The greatly swollen left hemisphere is reflected in the narrowed sulci seen at higher levels; compare the right and left sides here. X-ray CT images were obtained with contrast, before and after decompressive surgery. The effects of surgery are seen in the postoperative images. The point of skull opening is seen here, and low attenuation air pockets normally introduced during surgery here. Perfusion SPECT shows very low blood flow to the lesion.