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Fast laser scanning optical-CT apparatus for 3D radiation dosimetry
- Source :
- Physics in Medicine and Biology. 52:N257-N263
- Publication Year :
- 2007
- Publisher :
- IOP Publishing, 2007.
-
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.
- Subjects :
- Time Factors
Laser scanning
medicine.medical_treatment
Brachytherapy
Radiosurgery
law.invention
Imaging, Three-Dimensional
Optics
law
Calibration
medicine
Humans
Dosimetry
Radiology, Nuclear Medicine and imaging
Radiometry
Physics
Dosimeter
Radiological and Ultrasound Technology
business.industry
Lasers
Laser
Models, Economic
Tomography
Tomography, X-Ray Computed
business
Subjects
Details
- ISSN :
- 13616560 and 00319155
- Volume :
- 52
- Database :
- OpenAIRE
- Journal :
- Physics in Medicine and Biology
- Accession number :
- edsair.doi.dedup.....3178ada7390d1fd4b11afb1ca34aaa68
- Full Text :
- https://doi.org/10.1088/0031-9155/52/11/n01