Abstract：
:Calibrated C-arm fluoroscopy is used for a variety of surgical procedures where surgical tools and anatomical structures need to be located in space. Calibration can be performed online by combining measurements of the geometry of the image (center and radius) with measurements of a grid of fiducial markers. This article focuses on the first aspect--image geometry--and describes a method to perform the geometry measurements automatically. The accuracy, robustness, and speed of the method are validated on 100 images obtained from several hospitals with different C-arm scanners. All 100 images were successfully measured with an average error of 0.8 mm for the center and 0.8 mm for the radius. The execution time is less than one second per image.
journal_name
Med Physjournal_title
Medical physicsauthors
Archip N,Rohling Rdoi
10.1118/1.1781331subject
Has Abstractpub_date
2004-09-01 00:00:00pages
2498-500issue
9eissn
0094-2405issn
2473-4209journal_volume
31pub_type
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