Analytical Study of the Effect of the System Geometry on Photon Sensitivity and Depth of Interaction of Positron Emission Mammography
Joint Authors
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-20
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Positron emission mammography (PEM) cameras are novel-dedicated PET systems optimized to image the breast.
For these cameras it is essential to achieve an optimum trade-off between sensitivity and spatial resolution and therefore the main challenge for the novel cameras is to improve the sensitivity without degrading the spatial resolution.
We carry out an analytical study of the effect of the different detector geometries on the photon sensitivity and the angle of incidence of the detected photons which is related to the DOI effect and therefore to the intrinsic spatial resolution.
To this end, dual head detectors were compared to box and different polygon-detector configurations.
Our results showed that higher sensitivity and uniformity were found for box and polygon-detector configurations compared to dual-head cameras.
Thus, the optimal configuration in terms of sensitivity is a PEM scanner based on a polygon of twelve (dodecagon) or more detectors.
We have shown that this configuration is clearly superior to dual-head detectors and slightly higher than box, octagon, and hexagon detectors.
Nevertheless, DOI effects are increased for this configuration compared to dual head and box scanners and therefore an accurate compensation for this effect is required.
American Psychological Association (APA)
Aguiar, Pablo& Lois, Cristina. 2012. Analytical Study of the Effect of the System Geometry on Photon Sensitivity and Depth of Interaction of Positron Emission Mammography. Journal of Oncology،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-484451
Modern Language Association (MLA)
Aguiar, Pablo& Lois, Cristina. Analytical Study of the Effect of the System Geometry on Photon Sensitivity and Depth of Interaction of Positron Emission Mammography. Journal of Oncology No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-484451
American Medical Association (AMA)
Aguiar, Pablo& Lois, Cristina. Analytical Study of the Effect of the System Geometry on Photon Sensitivity and Depth of Interaction of Positron Emission Mammography. Journal of Oncology. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-484451
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-484451