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

Esposito, M, Anaxagoras, T, Evans, PM, Green, S, Manolopoulos, S, Nieto-Camero, J, Parker, DJ, Poludniowski, G, Price, T, Waltham, C and Allinson, NM (2015) CMOS Active Pixel Sensors as energy-range detectors for proton Computed Tomography In: 10th International Conference on Position Sensitive Detectors, 7-12 Sept 2014, Univ Surrey, Guildford, ENGLAND.

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Since the first proof of concept in the early 70s, a number of technologies has been proposed to perform proton CT (pCT), as 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. However, such an approach is limited by the need for only a single proton passing through the energy-range detector per 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 individual 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.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : Instrumentation for hadron therapy
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Vision Speech and Signal Processing
Authors :
Esposito, M
Anaxagoras, T
Evans, PM
Green, S
Manolopoulos, S
Nieto-Camero, J
Parker, DJ
Poludniowski, G
Price, T
Waltham, C
Allinson, NM
Date : 1 June 2015
DOI : 10.1088/1748-0221/10/06/C06001
Copyright Disclaimer : Copyright 2015 Journal of Instrumentation
Contributors :
ContributionNameEmailORCID PUBLISHING LTD,
Uncontrolled Keywords : Science & Technology, Technology, Instruments & Instrumentation, Instrumentation for hadron therapy, Solid state detectors, Computerized Tomography (CT) and Computed Radiography (CR), Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), RADIOGRAPHY, THERAPY, PATIENT
Related URLs :
Additional Information : Copyright 2015 Journal of Instrumentation
Depositing User : Symplectic Elements
Date Deposited : 18 Feb 2016 12:01
Last Modified : 03 Jun 2016 01:08

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