NDLI: Development of a fillable, tapered PET/CT phantom

Content Provider	IEEE Xplore Digital Library
Author	Wilson, Joshua M. Lokitz, Stephen J. Turkington, Timothy G.
Copyright Year	2008
Description	Author affiliation: Department of Radiology, Duke University, Durham, NC 27710 USA (Turkington, Timothy G.) \|\| Graduate Program in Medical Physics, Duke University, Durham, NC 27710 USA (Wilson, Joshua M.) \|\| Biomedical Research Foundation of NW Louisiana, Shreveport, LA USA (Lokitz, Stephen J.)
Abstract	PET system performance and image quality are degraded as body size increases; as size increases so do scatter fractions, random fractions, and attenuation. Based on simulated and acquired data, a fillable, tapering phantom is being developed to measure PET scanner performance and image quality as a function of body size over a wide range of sizes. Design constraints included shape, cross-sectional dimensions, material, wall thickness, and taper angle. For fixed end sizes (large at one end, small at the other) a narrow taper leads to a long, heavy phantom. A steep taper (where the diameter changes greatly within the scanner field of view) may not represent any particular cross section very well. Monte Carlo simulations were performed to determine an acceptable taper angle that balances the pros and cons of steep and narrow taper rates. The simulations were validated with measurements on existing physical phantoms. Then, tapering phantoms with different taper angles and phantoms with constant cross-sectional dimensions were simulated at different positions in the axial field of view to investigate properties of different taper rates. Scatter fractions of simulated taper phantoms and phantoms with constant cross-sectional dimensions were compared. Of the different taper angles simulated, it was determined that a 25° taper will yield a phantom that can represent a continuum of cross-sectional dimensions while still being a practical size. The final design parameters for this phantom include the 25° taper, an oval cross section ranging from 38.5 × 49.5 cm to 6.8 × 17.8 cm, a length of 51.1 cm, a mass of 6 kg (empty), a mass of 42 kg (water filled), and acrylic walls 1.25 cm thick.
Starting Page	3898
Ending Page	3902
File Size	5363343
Page Count	5
File Format	PDF
ISBN	9781424427147
ISSN	10957863
DOI	10.1109/NSSMIC.2008.4774134
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-19
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Imaging phantoms Image quality Scattering Computed tomography System performance Degradation Attenuation Size measurement Shape
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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