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High-resolution MRSI for radiotherap...

University of Alberta (Canada).

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High-resolution MRSI for radiotherapy planning.

Record Type:	Electronic resources : Monograph/item
Title/Author:	High-resolution MRSI for radiotherapy planning./
Author:	Heikal, Amr Ahmed.
Description:	115 p.
Notes:	Source: Masters Abstracts International, Volume: 46-02, page: 0876.
Contained By:	Masters Abstracts International46-02.
Subject:	Biophysics, Medical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR29967
ISBN:	9780494299678

High-resolution MRSI for radiotherapy planning.
Heikal, Amr Ahmed.

High-resolution MRSI for radiotherapy planning. - 115 p.

Source: Masters Abstracts International, Volume: 46-02, page: 0876.

Thesis (M.Sc.)--University of Alberta (Canada), 2007.

The potential use of high-resolution magnetic resonance spectroscopic imaging (MRSI) for radiotherapy planning is investigated in this thesis. A number of tests are conducted to study the effects of reducing the voxel size in high-resolution MRSI on the spectral signal-to-noise ratio (SNR), and the metabolite ratios. An assessment of the quality of biological tumor delineation using two ranges of resolution in MRSI is conducted using a gelatin phantom designed to eliminate zero-averaging partial volume as well as magnetic susceptibility artifacts. The results show that the decrease in SNR associated with the decrease in voxel size was tolerable and that the metabolite ratios measured with both resolutions agreed within error. The differences in tumor delineation between high- and low-resolution MRSI is demonstrated using the gel phantom. Finally, further uses of gel phantoms are suggested to optimize the parameters used for biological tumor delineation.

ISBN: 9780494299678Subjects--Topical Terms:

1017681
Biophysics, Medical.

High-resolution MRSI for radiotherapy planning.
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245 1 0 $a High-resolution MRSI for radiotherapy planning.
300 $a 115 p.
500 $a Source: Masters Abstracts International, Volume: 46-02, page: 0876.
502 $a Thesis (M.Sc.)--University of Alberta (Canada), 2007.
520 $a The potential use of high-resolution magnetic resonance spectroscopic imaging (MRSI) for radiotherapy planning is investigated in this thesis. A number of tests are conducted to study the effects of reducing the voxel size in high-resolution MRSI on the spectral signal-to-noise ratio (SNR), and the metabolite ratios. An assessment of the quality of biological tumor delineation using two ranges of resolution in MRSI is conducted using a gelatin phantom designed to eliminate zero-averaging partial volume as well as magnetic susceptibility artifacts. The results show that the decrease in SNR associated with the decrease in voxel size was tolerable and that the metabolite ratios measured with both resolutions agreed within error. The differences in tumor delineation between high- and low-resolution MRSI is demonstrated using the gel phantom. Finally, further uses of gel phantoms are suggested to optimize the parameters used for biological tumor delineation.
590 $a School code: 0351.
650 4 $a Biophysics, Medical. $3 1017681
650 4 $a Health Sciences, Radiology. $3 1019076
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710 2 $a University of Alberta (Canada). $3 626651
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