Aims: It was aimed to investigate postoperative conformal radiotherapy planning that provides the best target volume and the least dose for critical organs in cancers of stomach. Methods: This study was conducted on the CT simulation images of thirty patients diagnosed with gastric cancer. Target volumes and the organs at risk were contoured. AP-PA reciprocal parallel field conventional plan an...

VHL patients develop tumors in brain, spinal cord, nerve roots, kidney, adrenal gland and extra-adrenal ganglia, pancreas, epididymis and broad ligament. VHL disease produces highly characteristic neuropathologic changes which are presented in this review. Highly vascularized tumors, hemangioblastomas, involve cerebellum and spinal cord of the majority of patients. A smaller number of patients ...

Diffusion tensor imaging (DTI) is currently the only non-invasive in vivo assessment of white matter tract integrity. Capitalizing on the diffusion properties of water within an axon, DTI enables the visualization of tissue structure at a microscopic scale. Furthermore, measurements of anisotropy and diffusivity enable the detection of subtle details of the effects of injury that cannot be dete...

Intraoperative sonography was performed in 20 children in order to localize intramedullary spinal cord tumors. It provided excellent visualization of the extent and consistency of the tumor before surgical opening of the dura mater. The sonographic findings were used in selecting the site and extent of myelotomy. Intraoperative sonography proved to be a valuable adjunct to spinal cord surgery.

aims: it was aimed to investigate postoperative conformal radiotherapy planning that provides the best target volume and the least dose for critical organs in cancers of stomach. methods: this study was conducted on the ct simulation images of thirty patients diagnosed with gastric cancer. target volumes and the organs at risk were contoured. ap-pa reciprocal parallel field conventional plan an...

Spinal ependymoma occupies 40-60% of primary spinal cord tumors and has a feature of intramedullary tumor. The tumor most commonly arises from the central canal of the spinal cord, the conus medullaris or the filum terminale and its pathological features are usually benign. Unlike above characteristics, intra and extramedullary ependymomas are reported very rarely and have wide variety of histo...