Hi all, I am currently working on a small project on how to analyse the uniformity on an image, using ImageJ and standardize the method in order for all the users to have same results.But first let me go through a bit of background.
In radiotherapy physics departments there are multiple machines producing radiation. One of our monthly QA checks in the superficial treatment machine is irradiating a Gafchromic film (a film that changes color if it is irradiated) and check that the central mean value of a circular applicator and and 4 points (two on top and bottom of the center and two on left and right) are within 5% of the central mean value.
The following paragraph is taken from the work instructions that we are currently using: ''To open in ImageJ the format may need converting to .PNG. Do this with MSPaint). Open the image in ImageJ. To get the most dose-sensitive colour channel select Image->Color->Split Channels and select the RED channel. Check that Image-Type is set to “8-bit”. Select the rectangle tool and select a region approx 100x100 pixels (can be smaller for the smallest applicators). Press M (or Analyse->Measure) to get the stats for that region. Record the mean readings.
Is there a way to create templates so that the readings recorded could be reproduced for multiple users? What I am trying to do actually is create 8 circles of varying radius with 5 predefined squares of 100x100 pixels, so I can attach the template on the desired applicator. I would appreciate any help or solution.