CMOS Active Pixel Sensors as energy-range detectors for proton Computed Tomography

Esposito, Michela and Anaxagoras, Thalis and Evans, Phil and Green, Stuart and Manolopoulos, Spyros and Nieto-Camero, Jaime and Parker, David and Poludniowski, Gavin and Price, Tony and Waltham, Chris and Allinson, Nigel (2015) CMOS Active Pixel Sensors as energy-range detectors for proton Computed Tomography. J Instrumentation, 10 . C06001. ISSN 1748-0221

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Item Type:Article
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Abstract

Since the first proof of concept in the early 70s, a number of technologies has been proposed to perform proton CT (pCT), as a means of mapping tissue stopping power for accurate treatment planning in proton therapy. Previous prototypes of energy-range detectors for pCT have been mainly based on the use of scintillator-based calorimeters, to measure proton residual energy after passing through the patient. However, such an approach is limited by the need for only a single proton passing through the energy-range detector in a read-out cycle. A novel approach to this problem could be the use of pixelated detectors, where the independent read-out of each pixel allows to measure simultaneously the residual energy of a number of protons in the same read-out cycle, facilitating a faster and more efficient pCT scan.
This paper investigates the suitability of CMOS Active Pixel Sensors (APSs) to track indi- vidual protons as they go through a number of CMOS layers, forming an energy-range telescope. Measurements performed at the iThemba Laboratories will be presented and analysed in terms of correlation, to confirm capability of proton tracking for CMOS APSs.

Additional Information:10th INTERNATIONAL CONFERENCE ON POSITION SENSITIVE DETECTORS 7–12 SEPTEMBER 2014, UNIVERSITY OF SURREY, GUILDFORD, SURREY, U.K.
Keywords:Instrumentation for hadron therapy, Solid state detectors, Computerized Tomogra- phy (CT), Detector modelling and simulations, bmjgoldcheck, NotOAChecked
Subjects:F Physical Sciences > F350 Medical Physics
H Engineering > H600 Electronic and Electrical Engineering
Divisions:College of Science > School of Computer Science
ID Code:17589
Deposited On:05 Jun 2015 09:25

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