Paper Info
Title
Real-time 3D image guided patient positioning in radiation therapy
Abstract
Patient positioning in modem radiotherapy is becoming far more important because a small positioning error may result in missing target and irradiating normal tissues in treatment of small lesions. Clinical outcome of radiotherapy can potentially be improved by increasing the precision of tumor localization and dose delivery during the treatment. In this paper an accurate and precise patient positioning system has been achieved through alignment of real-time three dimensional 3D surface images with a reference surface image. The real-time 3D surface is captured using a state-of-art 3D stereovision system, and then is matched with the pre-defined reference image generated from treatment planning data. Positioning parameters are calculated by automatically aligning the real-time surface and the reference surface via a modified iterative closest point (ICP) algorithm. Results from phantom experiments and clinical applications demonstrated the excellent efficacy of < 2 minutes and the desired accuracy and precision of < 1 mm in isocenter shifts and of < 1 degree in rotations.
Year
DOI
Venue
2006
10.1117/12.651361
PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
Keywords
Field
DocType
3D imaging,image-guided radiotherapy,image fusion,patient repositioning
Computer vision,Image fusion,Reference surface,Computer science,Imaging phantom,Radiation treatment planning,Radiation therapy,Artificial intelligence,Accuracy and precision,Positioning system,Isocenter
Conference
Volume
ISSN
Citations 
6056
0277-786X
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
dezhi liu100.34
gongjie yin200.34
Shidong Li3175.07