#Tungsten warzone 2100 verification#

Zou, Lian Zhang, Weisha Liu, Xiangxiang Xie, Zhao Xie, Yaoqin (authors)Ĭlinical application of image-guided radiotherapy, IGRT (on the Varian OBI platform) Applications cliniques de la radiotherapie guidee par l'image (RTGI)Įnergy Technology Data Exchange (ETDEWEB) The CBCT system provides the capacity for soft tissue imaging in the treatment position and real-time radiographic monitoring during treatment delivery. It focuses on localizing tumors based on internal anatomy, not just on the conventional external marks or tattoos. The CBCT function of OBI was installed in March 2005 at our department. For this purpose, on-board kV-kV seems to be an ideal system in terms of image quality. Displacements of these markers can be monitored radiographically during the treatment course and the registered marker shifts act as a surrogate for prostate motion. The OBI has been used for on-line set-up correction of prostate patients using internal gold markers. In this paper we present the on-board imager ( OBI, Varian Medical Systems, Palo Alto, CA) that has been in routine clinical use at the Karolinska University Hospital since June 2004.

#Tungsten warzone 2100 verification#

The verification of the accurate treatment position in conjunction with detailed anatomical information before every fraction can be essential for the outcome of the treatment. Some of the most recent available methods applied for target localization are: trans-abdominal ultrasound, implanted markers with in room MV or kV X-rays, optical surface tracking systems, implantable electromagnetic markers, in room CT such as kVCT on rail, kilo-voltage or mega-voltage cone-beam CT (CBCT) and helical megavoltage CT. Image-guided radiation therapy (IGRT) can be used to measure and correct positional errors for target and critical structures immediately prior to or during treatment delivery.

International Nuclear Information System (INIS) Clinical application of image-guided radiotherapy, IGRT (on the Varian OBI platform)