Enhancement of megavoltage electronic portal images for markerless tumor tracking
نویسندگان
چکیده
منابع مشابه
Quality enhancement of Pelvis electronic portal images in order to improve treatment accuracy
Introduction: In order to reduce patient setup error in treatment field, portal images with treatment beam (megavoltage x-ray) are widely used. These images are acquired by electronic portal imaging devices (EPID). However, portal images suffer from insufficient anatomical information, contrast, and spatial resolution, because of the fact that Compton scatter is the main photon...
متن کاملOn Fuzzy Enhancement of Megavoltage Images in Radiation Therapy
The megavoltage electronic portal imaging is a very important task for cancer treatment in the radiation therapy. The megavoltage images (MVIs) , however, are very poor in quality because of imaging physics. For a reliable patient set-up verification we need better in-treatment images to track relevant features. In recent years, some researchers have applied the concept of fuzzy set theory to d...
متن کاملDevelopment and clinical evaluation of automatic fiducial detection for tumor tracking in cine megavoltage images during volumetric modulated arc therapy.
PURPOSE Real-time tracking of implanted fiducials in cine megavoltage (MV) imaging during volumetric modulated arc therapy (VMAT) delivery is complicated due to the inherent low contrast of MV images and potential blockage of dynamic leaves configurations. The purpose of this work is to develop a clinically practical autodetection algorithm for motion management during VMAT. METHODS The expec...
متن کاملMegavoltage X-ray Dose Enhancement with Gold Nanoparticles in Tumor Bearing Mice
One of the applications of gold nanoparticles (GNPs) in medicine is radiation dose-enhancing effect. Although there are many simulations, in vitro and in vivo evidence that GNPs can enhance significantly the radiation dose effect of orthovoltage beams. These beams compared with megavoltage (MV) beams, have limited applications in radiotherapy. In order to evaluate GNPs radiosensitization perfor...
متن کاملBabySTEPS: A Sugar Tracking Electronic Portal System for Gestational Diabetes
Gestational diabetes is a condition occurring in up to 18% [1] of pregnant women that results in an increase in blood glucose levels due to the body's inability to produce sufficient insulin given the additional needs of the baby, and/or hormonal changes that lower the body's sensitivity to insulin. If left untreated, the growing baby may become too large, increasing the risk of injury to the m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Clinical Medical Physics
سال: 2018
ISSN: 1526-9914
DOI: 10.1002/acm2.12411