NDLI: Evaluation of filter function for volume PET imaging using the 3DRP algorithm

Content Provider	IEEE Xplore Digital Library
Author	Baghaei, H. Wai-Hoi Wong Hongdi Li Uribe, J. Yu Wang Aykac, M. Yaqiang Liu Tao Xing
Copyright Year	2002
Description	Author affiliation: M.D. Anderson Cancer Center, Texas Univ., Houston, TX, USA (Baghaei, H.; Wai-Hoi Wong; Hongdi Li; Uribe, J.; Yu Wang; Aykac, M.; Yaqiang Liu; Tao Xing)
Abstract	We have investigated the influence of filter and its cutoff frequency on the image quality for volume PET imaging using the widely used 3D-reprojection (3DRP) algorithm. An important parameter in 3DRP and other filtered backprojection algorithms is the choice of the filter window function. For this work, three different low-pass filter window functions, Hann, Hamming and Butterworth, were investigated. For each filter a range of cutoff frequencies were considered. Projection data were acquired by scanning a uniform cylindrical phantom, a cylindrical phantom with four small lesions and the Hoffman brain phantom. All measurements were performed with the high-resolution PET camera developed at MD Anderson Cancer Center (MDAPET). This prototype camera, which is a multiring scanner with no septa, has a transaxial resolution of 2.8 mm. The evaluation was performed by computing the noise level of reconstructed images of the uniform phantom, the contrast recovery of the hot lesions in warm background, and by visual inspection of image quality for the Hoffman brain phantom. For the high statistics data presented here, a cutoff frequency 0.6 to 0.8 of Nyquist resulted in a reasonable compromise between the contrast recovery and the noise level for the Hann filter. For the Butterworth filter, a cutoff at 0.4-0.6 of Nyquist frequency was a reasonable choice. Overall, the Butterworth filter performed better in contrast recovery and spatial resolution at the cost of somewhat noisier image.
Starting Page	1796
Ending Page	1800
File Size	871118
Page Count	5
File Format	PDF
ISBN	0780373243
ISSN	10823654
DOI	10.1109/NSSMIC.2001.1008691
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-11-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Low pass filters Imaging phantoms Cutoff frequency Image quality Lesions Performance evaluation Cameras Noise level Cancer
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
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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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