Full length X-rays by ‘stitching’ in osirix
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you can make full length X-rays by using the fusion feature in osirix. using two or more digital X-rays.
the original technique is described for X-ray film, using a simple frame to stack the cassettes and then join them.
the same thing can be done by using CR digital cassettes, instead of analog film cassettes, and stitching them digitally in osirix.
the resultant full length X-ray can be used for deformity planning etc.
1. make a stand like we have in MAH (refer to http://www.jocr.co.in/wp/2011/11/19/technical-note-jocr-oct-dec-2011/)
2. stack three digital cassettes on that stand
2a. keep two k wires 10 mm on either side such that they are half on the upper and half on the lower cassette.
2b. expose in a single shoot, with X-ray centred on knee
3. get two or three dicom images depending on how many cassettes were used. .
4. stitch the images in osirix (see https://www.youtube.com/watch?v=YLrDGupi2MY)
5. adjust the images such that the two k wires are perfectly aligned in between the two images, and keep a gap between the two images such that the length of the K wire is 10 mm.