A New Sampling Scheme for the Ring Positron Camera: Dichotomic Ring Sampling |
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| Authors: | Cho Z. H. Hong K. S. Ra J. B. Lee S. Y. Hilal S. K. Correll J. |
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| Affiliation: | Department of Electrical Science Korea Advanced Institute of Science, Seoul, Korea; |
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| Abstract: | A new sampling scheme applicable to the circular ring geometry positron camera is described. The new scheme employs Dichotomic-Ring (two half rings) with linearmotion which allows parallel or fan mode sampling with any desired degree of sampling interval. The parallel and fan data sets obtained by dichotomic motion provide d/4 and d/2 samplings where d is the detector to detector spacing. Computer simulations were made which confirmed the expected performances and results are compared with other conventional schemes such as wobbling and d/2 angular motion sampling schemes for a ring geometry positron camera. |
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