Absolute calibration of optical power for PDT: Report of AAPM TG140. Issue 8 (23rd July 2013)

• Record Type: Journal Article
• Authors: Zhu, Timothy C.; Bonnerup, Chris; Colussi, Valdir C.; Dowell, Marla L.; Finlay, Jarod C.; Lilge, Lothar; Slowey, Thomas W.; Sibata, Claudio
• Is Part Of: Medical physics. Volume 40:Issue 8(2013)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2013-07-23
• Subjects: Therapeutic applications -- Standards and calibration; calibration -- laser applications in medicine -- photodynamic therapy -- quality assurance; power meter -- optical power -- radiance; Radiation therapy -- Testing or calibrating of apparatus or arrangements provided for in groups G01D1/00 to G01D15/00 -- Calibrating of instruments or apparatus; Calibration -- Error analysis -- Photodynamic therapy -- Particle beam detectors -- Laser sensors -- Irradiance -- Optical sensors -- Dosimetry -- Quality assurance -- Calorimeters; Medical physics -- Periodicals; Medical physics; Geneeskunde; Natuurkunde; Toepassingen; Biophysics; Periodicals; Periodicals; Electronic journals; 610.153
• DOI: 10.1118/1.4813897
• Languages: English
• ISSNs: 0094-2405

Abstract

Abstract : This report is primarily concerned with methods for optical calibration of laser power for continuous wave (CW) light sources, predominantly used in photodynamic therapy (PDT). Light power calibration is very important for PDT, however, no clear standard has been established for the calibration procedure nor the requirements of power meters suitable for optical power calibration. The purposes of the report are to provide guidance for establishing calibration procedures for thermopile type power meters and establish calibration uncertainties for most commercially available detectors and readout assemblies. The authors have also provided a review of the use of various power meters for CW and pulsed optical sources, and provided recommended temporal frequencies for optical power meter calibrations and guidance for routine quality assurance procedure.