Intra-operative 3D guidance and edema detection in prostate brachytherapy using a non-isocentric C-arm
نویسندگان
چکیده
منابع مشابه
Intra-operative 3D Guidance in Prostate Brachytherapy Using a Non-isocentric C-arm
Intra-operative guidance in Transrectal Ultrasound (TRUS) guided prostate brachytherapy requires localization of inserted radioactive seeds relative to the prostate. Seeds were reconstructed using a typical C-arm, and exported to a commercial brachytherapy system for dosimetry analysis. Technical obstacles for 3D reconstruction on a non-isocentric C-arm included pose-dependent C-arm calibration...
متن کاملDynamic Dosimetry and Edema Detection in Prostate Brachytherapy - a Complete System
Purpose: Brachytherapy (radioactive seed insertion) has emerged as one of the most effective treatment options for patients with prostate cancer, with the added benefit of a convenient outpatient procedure. The main limitation in contemporary brachytherapy is faulty seed placement, predominantly due to the presence of intraoperative edema (tissue expansion). Though currently not available, the ...
متن کاملTowards Intra-operative Prostate Brachytherapy Dosimetry Based on Partial Seed Localization in Ultrasound and Registration to C-arm Fluoroscopy
Intraoperative dosimetry during prostate brachytherapy is a long standing clinical problem. We propose a novel framework to address this problem by reliable detection of a subset of seeds from 3D transrectal ultrasound and registration to fluoroscopy. Seed detection in ultrasound is achieved through template matching in the RF ultrasound domain followed by thresholding and spatial filtering bas...
متن کاملIntra-operative Localization of Brachytherapy Implants Using Intensity-based Registration.
In prostate brachytherapy, a transrectal ultrasound (TRUS) will show the prostate boundary but not all the implanted seeds, while fluoroscopy will show all the seeds clearly but not the boundary. We propose an intensity-based registration between TRUS images and the implant reconstructed from uoroscopy as a means of achieving accurate intra-operative dosimetry. The TRUS images are first filtere...
متن کاملProstate brachytherapy seed localization using a mobile c-arm without tracking.
The success of prostate brachytherapy depends on the faithful delivery of a dose plan. In turn, intraoperative localization and visualization of the implanted radioactive brachytherapy seeds enables more proficient and informed adjustments to the executed plan during therapy. Prior work has demonstrated adequate seed reconstructions from uncalibrated mobile c-arms using either external tracking...
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ژورنال
عنوان ژورنال: Medical Image Analysis
سال: 2012
ISSN: 1361-8415
DOI: 10.1016/j.media.2010.07.011