NDLI: Scatter correction in scintillation camera imaging of positron-emitting radionuclides

Content Provider	IEEE Xplore Digital Library
Author	Ljungberg, M. Danfelter, M. Strand, S.-E. King, M.A. Brill, B.A.
Copyright Year	1997
Description	Author affiliation: Dept. of Radiat. Phys., Lund Univ., Sweden (Ljungberg, M.)
Abstract	The use of Anger scintillation cameras for positron SPECT has become of interest recently due to their use with imaging 2-/sup 18/F deoxyglucose. Due to the special crystal design (thin and wide), a significant amount of primary events will also be recorded in the Compton region of the energy spectra. Events recorded in a second Compton window (CW) can add information to the data in the photopeak window (PW), since some events are correctly positioned in the CW. However, a significant amount of the scatter is also included in CW which needs to be corrected. This work describes a method whereby a third scatter window (SW) is used to estimate the scatter distribution in the CW and the PW. The accuracy of estimation has been evaluated by Monte Carlo simulations in a homogeneous elliptical phantom for point and extended sources. Two examples of clinical application are also provided. Results from simulations show that essentially only scatter from the phantom is recorded between the 511 keV PW and 340 keV CW. Scatter projection data with a constant multiplier can estimate the scatter in the CW and PW, although the scatter distribution in SW corresponds better to the scatter distribution in the CW. The multiplier k for the CW varies significantly more with depth than it does for the PW. Clinical studies show an improvement in image quality when using scatter corrected combined PW and CW.
Starting Page	1532
Ending Page	1536
File Size	802279
Page Count	5
File Format	PDF
ISBN	0780335341
ISSN	10823654
DOI	10.1109/NSSMIC.1996.587917
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-11-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cameras Photonic crystals Electromagnetic scattering Particle scattering Biomedical imaging Physics Imaging phantoms High-resolution imaging Positron emission tomography Collimators
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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