Application of image analysis methods for isocenter quality assurance in radiotherapy
Authors:
- Michał Niedźwiecki,
- Monika Tomaszuk,
- Damian Kabat,
- Zbigniew Latała,
- Krzysztof Rzecki,
- Zbisław Tabor
Abstract
One of the major procedures for testing the geometrical accuracy of devices used in radiotherapy treatments is the test of the geometrical position of the radiation isocenter. The importance of the test reflects the fact that geometrical position of the radiation isocenter generally affects the tumor targeting. At present the geometric accuracy is assessed with the Winston-Lutz test which checks the position of an image of a ball marker with the respect to the center of the radiation field as projected on a detector plane. Obviously, determination of coordinates of a single marker is not sufficient to fully account for a complicated geometry of a therapeutic device. The purpose of the study was to design a new image analysis tool to better determine the isocenter. The proposed automated procedure for determining isocenter position uses projection data acquired for a special cube phantom. The projection images of a phantom are acquired for various angles of rotation of the gantry. A procedure is proposed to extract some geometric characteristics of a therapeutic device from the projection images.
- Record ID
- CUTefb26e424a6e45779e94f840138a8976
- Publication categories
- ;
- Author
- Journal series
- Image Analysis and Stereology, ISSN 1580-3139
- Issue year
- 2017
- Vol
- 36
- No
- 1
- Pages
- 35-41
- Other elements of collation
- rys.; wykr.; Bibliografia (na s.) - 41; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 36, No. 1
- Keywords in English
- fiducials, isocenter, projection images, radiotherapy
- DOI
- DOI:10.5566/ias.1631 Opening in a new tab
- URL
- https://www.ias-iss.org/ojs/IAS/article/view/1631 Opening in a new tab
- Related project
- Fantom do testów eksploatacyjnych urządzeń radioterapeutycznych w teleradioterapi. . Project leader at PK: , ,
- Language
- eng (en) English
- License
- Score (nominal)
- 20
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTefb26e424a6e45779e94f840138a8976/
- URN
urn:pkr-prod:CUTefb26e424a6e45779e94f840138a8976
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.