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Determining when 3D reconstruction methods are required in volume PET imaging

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2 Author(s)
Kinahan, P. ; Dept. of Radiol., Pennsylvania Univ., PA, USA ; Karp, J.

An attempt is made to determine at which point a 3-D reconstruction algorithm is needed for a volume imaging scanner as the axial extent is increased. From simulations of an existing volume PET (positron emission tomography) scanner with a maximum axial acceptance angle (φ) of 9 deg, it is shown that a two-dimensional image reconstruction with α=9 deg is a compromise between sensitivity, speed, and accuracy compared to a two-dimensional reconstruction with a software limit of α=1 deg and a three-dimensional reconstruction with α=9 deg. It is also shown that a proposed scanner with α=27 deg requires three-dimensional reconstruction in order to achieve maximum sensitivity without unacceptable losses in accuracy

Published in:

Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE

Date of Conference:

25-31 Oct 1992