NDLI: Partial Volume Correction Using Continuous Wavelet Technique in Small Animal PET Imaging

Content Provider	IEEE Xplore Digital Library
Author	Arhjoul, L. Sarrhini, O. Bentourkia, M.
Copyright Year	2006
Description	Author affiliation: Dept. of Nucl. Medicine & Radiobiol., Sherbrooke Univ., Que. (Arhjoul, L.; Sarrhini, O.; Bentourkia, M.)
Abstract	The underestimation of the emitted radioactivity in small tissue structures measured with PET unfortunately requires correction for the partial volume effect (PVE) prior to image analysis. Meanwhile, the continuous wavelet transform (CWT) has the potential to isolate the signal of small structures from their environments, and to determine each structure by its width and position in PET images. Using CWT analysis and recovery coefficients (RQ, we report a new approach to correct for PVE in phantom and in rat PET images, regardless of the shape of the structures. The results show a full recovery in image intensity in the phantom small hot spots, and similarly in the rat tumors without any additional noise. On the other hand, dynamic FDG-PET was performed in rat images before and after PVE correction to assess tumor metabolic rates of glucose (MRG). The MRG values after PVE correction were significantly increased by 2.2 and 2.1 mumoles/100g/min for right and left tumors respectively, compared to those before PVE correction.
Starting Page	2717
Ending Page	2721
File Size	251467
Page Count	5
File Format	PDF
ISBN	1424405602
ISSN	10957863
DOI	10.1109/NSSMIC.2006.356441
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	Continuous wavelet transforms Positron emission tomography Neoplasms Animal structures Image analysis Imaging phantoms Volume measurement Wavelet transforms Shape Noise shaping
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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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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