NDLI: Observations regarding scatter fraction and NEC measurements for small animal PET

Content Provider	IEEE Xplore Digital Library
Author	Yang, Y. Cherry, S.R.
Copyright Year	2004
Description	Author affiliation: Dept. of Biomed. Eng., California Univ., Davis, CA, USA (Yang, Y.; Cherry, S.R.)
Abstract	The scatter fraction (SF) was measured for a line source, a mouse-sized phantom (25 mm /spl phi//spl times/70 mm) and a rat-sized phantom (60 mm /spl phi//spl times/150 mm) on the microPET II small animal PET scanner. Measurements were performed for four lower energy thresholds of 150, 250, 350 and 450 keV and a fixed upper energy threshold of 750 keV. Four different methods were used to obtain the SF. Significant scatter fractions were measured with just the line source in the field of view, with the spatial distribution of these events consistent with scatter from the gantry and environment. For mouse imaging, this component dominates over object scatter, and the measured SF is strongly method dependent. The environmental SF rapidly increases as the lower energy threshold decreases and can be more than 20% for an open energy window of 150-750 keV. The object SF originating from the mouse phantom is about 4% and does not change significantly as the lower energy threshold changes. The object SF for the rat phantom ranges from 20-40% for different energy windows and increases as the lower energy threshold decreases. Because the measured SF is highly dependent on the method, and there is as yet no agreed upon standard for animal PET, care must be exercised when comparing NEC rates for small objects between different scanners. Differences may be methodological rather than reflecting the performance of the scanner. Furthermore, this data has implications for scatter correction methods when the majority of the detected scatter does not arise from the object itself.
Starting Page	3906
Ending Page	3910
File Size	832081
Page Count	5
File Format	PDF
ISBN	0780387007
ISSN	10823654
e-ISBN	0780387015
DOI	10.1109/NSSMIC.2004.1466732
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-16
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scattering National electric code Animals Positron emission tomography Imaging phantoms Mice Energy measurement Performance evaluation Measurement standards Object detection
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

Observations regarding scatter fraction and NEC measurements for small animal PET

Coincidences originating from a single photon: An unrecognized and potentially significant source of scatter in small animal PET?

Performance evaluation of the fully engineered YAP-(S)PET scanner for small animal imaging

GATE simulations of human and small animal PET for determination of scatter fraction as a function of object size

Estimating an acquisition-specific NEC curve for PET acquisitions

Performance measurements for the GSO-based brain PET camera (G-PET)

Image quality vs. NEC in 2D and 3D PET

Diversity combining signal processing and NEC in list-mode PET

Simultaneous Attenuation and Scatter Corrections in Small Animal PET Imaging

Observations regarding scatter fraction and NEC measurements for small animal PET

Similar Documents

Observations regarding scatter fraction and NEC measurements for small animal PET

Coincidences originating from a single photon: An unrecognized and potentially significant source of scatter in small animal PET?

Performance evaluation of the fully engineered YAP-(S)PET scanner for small animal imaging

GATE simulations of human and small animal PET for determination of scatter fraction as a function of object size

Estimating an acquisition-specific NEC curve for PET acquisitions

Performance measurements for the GSO-based brain PET camera (G-PET)

Image quality vs. NEC in 2D and 3D PET

Diversity combining signal processing and NEC in list-mode PET

Simultaneous Attenuation and Scatter Corrections in Small Animal PET Imaging

Observations regarding scatter fraction and NEC measurements for small animal PET