A novel portal imaging device for advanced radiation therapy

A new detector for portal imaging is under development, which could greatly improve the alignment of the radiation beam with respect to the tumor during radiation treatment. The detector is based on gaseous and solid converters combined with gas electron multipliers (GEMs) as an amplification struct...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on nuclear science 2001-08, Vol.48 (4), p.1496-1502
Main Authors: Iacobaeus, C., Brahme, A., Danielsson, M., Fonte, P., Ostling, J., Peskov, V., Wallmark, M.
Format: Article
Language:English
Subjects:
Alpha particles
Beams (radiation)
Biomedical applications of radiation
Detectors
Devices
Electron multipliers
Electronics
Hospitals
Imaging
Neoplasms
Portals
Prototypes
Radiation detectors
Testing
X-rays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new detector for portal imaging is under development, which could greatly improve the alignment of the radiation beam with respect to the tumor during radiation treatment. The detector is based on gaseous and solid converters combined with gas electron multipliers (GEMs) as an amplification structure. The detector will have a large area and will be operated in a very high-rate environment. A prototype has been built and extensively tested, both with high-rate X-rays as well, in a clinical environment at the Karolinska Hospital. High rates and alpha particles could cause discharges in the GEM and discharge propagation from GEM to GEM and to the readout electronics. Since reliability is one of the main requirements for the portal imaging device, we performed systematic studies to find a safe-operating range of the device, free from typical high-rate problems, such as discharges.
ISSN:0018-9499
1558-1578
DOI:10.1109/23.958386