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SUMMARY:Use of an Optical Microscope method to calculate the PVDR’s for 
 Synchrotron MRT
DTSTART;VALUE=DATE-TIME:20141120T063000Z
DTEND;VALUE=DATE-TIME:20141120T080000Z
DTSTAMP;VALUE=DATE-TIME:20260712T184107Z
UID:indico-contribution-741@events01.synchrotron.org.au
DESCRIPTION:Speakers: Elizabeth Kyriakou (University of Melbourne)\nThe ra
 diobiology of microbeam radiation therapy (MRT) is poorly understood and t
 his is confounded by difficulties in measuring the dose-distribution. Our 
 investigation assesses the use of microscopy to determine the peak and val
 ley dose in Synchrotron microbeam radiation therapy (MRT). MRT is performe
 d using the horizontal collimator with arrays of 25µm wide x-ray beams wi
 th a pitch of 175µm. Three types of Gafchromatic films were irradiated du
 e to their differences in dynamic range. In addition\, each type of film w
 as imaged on a series of microscopes. Key parameters for imaging the irrad
 iated film were bit depth and spatial resolution of the microscope camera.
  Greyscale images taken with and without filters and full colour images we
 re all compared. Also considered was the imaging workflow\, with the optio
 n for automated loading and imaging of samples an important factor in redu
 cing user error. In conclusion\, it was found that a greyscale microscope 
 camera with a bit depth of 14 and pixel size of 0.32μm at a 20x objective
  was ideal to capture the characteristic of the microbeams.\n\nhttps://eve
 nts01.synchrotron.org.au/event/3/contributions/741/
LOCATION: NCSS Exhibition Area
URL:https://events01.synchrotron.org.au/event/3/contributions/741/
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