Abstract:
:Optical computed tomography (optical-CT) of 3D radiation dosimeters is a promising avenue for delivering an economic and reliable quality control of radiotherapy treatments such as intensity modulated radiotherapy, brachytherapy and stereotactic radiosurgery. The main problems in transferring 3D dosimeters to clinical setting have been in (1) the complexity of manufacture and behaviour of 3D dosimeters and (2) time-consuming readout and analysis of 3D dosimeters. This paper addresses the readout problem by showing that fast (20 min tomography scan), precise (projection absorbance signal-to-noise ratio is greater than 100:1 across the absorbance range 0.2 to 1.5) and accurate (good linearity in the calibration curve) measurements are possible using a novel method of optically scanning a laser beam across the 3D dosimeter.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
Krstajić N,Doran SJdoi
10.1088/0031-9155/52/11/N01subject
Has Abstractpub_date
2007-06-07 00:00:00pages
N257-63issue
11eissn
0031-9155issn
1361-6560pii
S0031-9155(07)42391-0journal_volume
52pub_type
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