The accuracy of proton stopping powers achievable with a low kilo-voltage dual energy CT

de Waal, Silja (2019) The accuracy of proton stopping powers achievable with a low kilo-voltage dual energy CT. Bachelor's Thesis, Physics.

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Abstract

The accuracy of determining proton stopping powers with a 30/60~kV dual energy CT scan is investigated. This research was needed to check if the determination of proton stopping powers can be tested in pre-clinical research. The method how the proton stopping power can be estimated from the electron density and the effective atomic number of the tissue is explained. The best reference material was found to be CB2-30\%. A correlation curve was found between the difference in Hounsfield units (obtained from the dual energy CT) and the accuracy of the relative electron density. If the data was scaled by the curve the deviation in the relative electron density was found to be 0.3\% and the correctness of the effective atomic number 0.1. The influence of noise on the Hounsfield units was investigated. It did not have an increased negative effect when a lower kV was used. It was concluded that the proton stopping power can be determined with a 30/60~kV dual energy CT-scan.

Item Type:	Thesis (Bachelor's Thesis)
Supervisor name:	Graaf, E.R. van der
Degree programme:	Physics
Thesis type:	Bachelor's Thesis
Language:	English
Date Deposited:	05 Jul 2019
Last Modified:	10 Jul 2019 08:21
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/19900

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