CT Registration: Experimental Determination of Suited Fiducial Marker Material and Registration Errors
نویسندگان
چکیده
منابع مشابه
Ct Registration: Experimental Determination of Suited Fiducial Marker Material and Registration Errors
BACKGROUND CT imaging is commonly used by physicians to monitor the development of pathological conditions, e.g. brain tumours. Accurate monitoring of a unique point in the brain over consecutive CT scans in between which a patient’s head may have moved requires determination of the relative position and orientation of the skull coordinate system with respect to the imager coordinate system, kn...
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Rationale and Objectives. Accurate registration of Computed Tomography images to the patient is crucial for computer-assisted surgery. Markers used in Roentgen Stereogrammetric Analysis can be located in a CT scan using a novel approach, and can also be located physically. RSA data act as ”ground truth” for the 3D marker locations. Methods. Two foam-bone phantoms were marked. The markers were s...
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Many image-guidance surgical systems rely on rigid-body, point-based registration of fiducial markers attached to the patient. Marker locations in image space and physical space are used to provide the transformation that maps a point from one space to the other. Target registration error (TRE) is known to depend on the fiducial localization error (FLE), and the fiducial registration error (FRE...
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Navigated bronchoscopy has been developed by various groups within the last decades. Systems based on CT data and electromagnetic tracking enable the visualization of the position and orientation of the bronchoscope, forceps, and biopsy tools within CT data. Therefore registration between the tracking space and the CT volume is required. Standard procedures are based on point-based registration...
متن کاملComparison of laser surface scanning and fiducial marker-based registration in frameless stereotaxy. Technical note.
The authors compared the accuracy of laser surface scanning patient registration using the commercially available Fazer (Medtronic, Inc.) with the conventional registration procedure based on fiducial markers (FMs) in computer-assisted surgery. Four anatomical head specimens were prepared with 10 titanium microscrews placed at defined locations and scanned with a 16-slice spiral computed tomogr...
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ژورنال
عنوان ژورنال: Journal of Medical Devices
سال: 2013
ISSN: 1932-6181,1932-619X
DOI: 10.1115/1.4024313