A modular hybrid PSPMT/APD depth encoding detector for high resolution positron emission tomography

Published on May 1, 2014in The Journal of Nuclear Medicine7.887
Buddika Sumanasena4
Estimated H-index: 4
 (UC Davis: University of California, Davis), Felipe Godinez4
Estimated H-index: 4
 + 5 AuthorsRamsey D. Badawi29
Estimated H-index: 29
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Abstract
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#1Abdullah A. Refaey (UC Davis: University of California, Davis)
#2Martin S. Judenhofer (UC Davis: University of California, Davis)H-Index: 28
Last. Ramsey D. Badawi (UC Davis: University of California, Davis)H-Index: 29
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We previously built a high-resolution PET scanner (PawPET) using 8 mm thick Lutetium Oxyorthosilicate (LSO) detectors, but it suffers from poor sensitivity. From our prior work we know that unpolished 0.5 mm pitch arrays with Toray reflector are challenging to decode at depths greater than 8 mm. We hypothesize that decoding will improve by polishing the crystal surfaces. We also know that polished arrays with ESR reflector have poor depth encoding performance when the crystal pitch is 1 mm or gr...
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#1Buddika Sumanasena (UC Davis: University of California, Davis)H-Index: 4
#2Qiyu PengH-Index: 9
Last. Ramsey D. Badawi (UC Davis: University of California, Davis)H-Index: 29
view all 7 authors...
POSITRON emission tomography (PET) is used in assessing therapy response, staging, and restaging of breast cancer [1]. However, whole-body PET scanners are not ideally suited to breast imaging due to low geometric sensitivity, low spatial resolution and signal loss due to attenuation in the body. Several groups are working on dedicated breast imaging systems to overcome such limitations[2][3]. Due to the typically smaller field of view (FOV), detectors capable of measuring depth of interaction (...
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#1Buddika Sumanasena (UC Davis: University of California, Davis)H-Index: 4
#2Felipe Godinez (UC Davis: University of California, Davis)H-Index: 4
Last. Ramsey D. Badawi (UC Davis: University of California, Davis)H-Index: 29
view all 5 authors...
PERFORMANCE of positron emission tomography (PET) scanners can be improved by using detectors that can measure depth of interaction (DOI) [1]. Dual ended readout is one of the widely studied methods to measure DOI. In this design two photodetectors are coupled to either end of a crystal or a block of crystals and DOI is estimated using the ratio of signal amplitudes recorded by the two photodetectors [2][3][4][5][6]. A hybrid dual ended readout DOI detector that uses a position sensitive photomu...
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