NDLI: Implementation of Histogram Based Soft-tissue Segmentation for Single Spiral Transmission Scanning in Whole Body PET

Content Provider	IEEE Xplore Digital Library
Author	Mizuta, T. Kitamura, K. Ishikawa, A. Tanaka, K. Amano, M.
Copyright Year	2006
Description	Author affiliation: Med. Syst. Div., Shimadzu Corp., Kyoto (Mizuta, T.; Kitamura, K.; Ishikawa, A.; Tanaka, K.; Amano, M.)
Abstract	3D continuous emission and spiral transmission (CEST) scanning provides a high-throughput whole-body PET study using two dedicated detectors for 3D emission and single transmission with continuous bed movement. Since post-injection single transmission data contains emission contamination (EC) and transmission scatter components (TSC), the transmission detector was designed to have a short axial extent with a highly collimated $^{137}Cs$ point source, and be implemented using a realtime EC correction method. However, transmission images can be still affected by residual EC and TSC, depending on patient size and dose injected. This results in slight variations in attenuation coefficients, depending on the patient's axial position. In this study, we developed a new soft-tissue segmentation (STS) method based on histogram scaling at each axial position of the spiral transmission. Peaks, corresponding to soft-tissue in a histogram of attenuation coefficients, were found at each axial position and the transmission image was scaled using the ratio of soft-tissue histogram peaks to the theoretical water attenuation coefficient. In scaled transmission images, the pixel values near the soft-tissue peak were replaced with the theoretical water attenuation coefficient. Quantitative evaluation was performed of the transmission images obtained under various acquisition conditions, both with and without the proposed STS method. Regarding final imaging performance, emission images reconstructed using both STS attenuation correction and hybrid scatter correction were evaluated. Results showed that the proposed STS method for spiral transmission scanning provided quantitative images independent of object size and containing activity concentration.
Starting Page	2155
Ending Page	2160
File Size	946562
Page Count	6
File Format	PDF
ISBN	1424405602
ISSN	10957863
DOI	10.1109/NSSMIC.2006.354341
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Histograms Spirals Whole-body PET Attenuation Sociotechnical systems Detectors Scattering Contamination Collimators Image segmentation
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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