On beam quality and stopping power ratios for high-energy x-rays
Johnsson, Stefan LU ; Ceberg, Crister LU
; Knöös, Tommy
LU
and Nilsson, Per
LU
(2000)
In Physics in Medicine and Biology
45(10).
p.2733-2745
- Abstract
- The aim of this work is to quantitatively compare two commonly used beam quality indices, IPR(20/10) and %dd(10)x, with respect to their ability to predict stopping power ratios (water to air), s(w,air), for high-energy x-rays. In particular, effects due to a varied amount of filtration of the photon beam will be studied. A new method for characterizing beam quality is also presented, where the information we strive to obtain is the moments of the spectral distribution. We will show how the moments enter into a general description of the transmission curve and that it is possible to correlate the moments to s(w,air) with a unique and simple relationship. Comparisons with TPR(20/10) and %dd(10), show that the moments are well suited for... (More)
- The aim of this work is to quantitatively compare two commonly used beam quality indices, IPR(20/10) and %dd(10)x, with respect to their ability to predict stopping power ratios (water to air), s(w,air), for high-energy x-rays. In particular, effects due to a varied amount of filtration of the photon beam will be studied. A new method for characterizing beam quality is also presented, where the information we strive to obtain is the moments of the spectral distribution. We will show how the moments enter into a general description of the transmission curve and that it is possible to correlate the moments to s(w,air) with a unique and simple relationship. Comparisons with TPR(20/10) and %dd(10), show that the moments are well suited for beam quality specification in terms of choosing the correct s(w,air). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1116901
- author
- Johnsson, Stefan
LU
; Ceberg, Crister
LU
; Knöös, Tommy
LU
and Nilsson, Per
LU
- organization
- publishing date
- 2000
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics in Medicine and Biology
- volume
- 45
- issue
- 10
- pages
- 2733 - 2745
- publisher
- IOP Publishing
- external identifiers
-
- pmid:11049168
- scopus:0033776436
- ISSN
- 1361-6560
- DOI
- 10.1088/0031-9155/45/10/301
- language
- English
- LU publication?
- yes
- id
- 30594be8-3ee7-4550-91be-bc05716afc82 (old id 1116901)
- date added to LUP
- 2016-04-01 12:14:04
- date last changed
- 2022-01-27 00:49:37
@article{30594be8-3ee7-4550-91be-bc05716afc82,
abstract = {{The aim of this work is to quantitatively compare two commonly used beam quality indices, IPR(20/10) and %dd(10)x, with respect to their ability to predict stopping power ratios (water to air), s(w,air), for high-energy x-rays. In particular, effects due to a varied amount of filtration of the photon beam will be studied. A new method for characterizing beam quality is also presented, where the information we strive to obtain is the moments of the spectral distribution. We will show how the moments enter into a general description of the transmission curve and that it is possible to correlate the moments to s(w,air) with a unique and simple relationship. Comparisons with TPR(20/10) and %dd(10), show that the moments are well suited for beam quality specification in terms of choosing the correct s(w,air).}},
author = {{Johnsson, Stefan and Ceberg, Crister and Knöös, Tommy and Nilsson, Per}},
issn = {{1361-6560}},
language = {{eng}},
number = {{10}},
pages = {{2733--2745}},
publisher = {{IOP Publishing}},
series = {{Physics in Medicine and Biology}},
title = {{On beam quality and stopping power ratios for high-energy x-rays}},
url = {{http://dx.doi.org/10.1088/0031-9155/45/10/301}},
doi = {{10.1088/0031-9155/45/10/301}},
volume = {{45}},
year = {{2000}},
}