An interactive application for removal of bone information in CT-angiography

In this paper we present a method that allows removing bony structures and calcifications from CT angiography (CTA) data. It relies on two data sets, one with (CA) and one without (NCA) contrast agent. In contrast to current approaches, the algorithm uses local rigid matching of each single object....

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Bibliographic Details
Published in:	Proceedings. 17th IEEE Symposium on Computer-Based Medical Systems pp. 396 - 401
Main Authors:	Maksimov, D., Finkel, F., Dietz, T., Diehl, S., Diiber, C., Rebholz, P., Hesser, J., Manner, R.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 2004
Subjects:	Angiography Arteries Bones Computed tomography Educational institutions Image reconstruction Implants Radiology Ultrasonic imaging Visualization
Online Access:	Get full text
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Summary:	In this paper we present a method that allows removing bony structures and calcifications from CT angiography (CTA) data. It relies on two data sets, one with (CA) and one without (NCA) contrast agent. In contrast to current approaches, the algorithm uses local rigid matching of each single object. Therefore, it allows compensating motion of the patient during acquisition. Furthermore, the method uses a highly accurate surface-matching procedure so that local mismatches can be as small as 3 voxels and therefore even arteries near the bone are mostly separated correctly. The overall system requires about 20 minutes on a Pentium 4 2.4 GHz with 1 GByte RAM for a 700 MByte data set (CA+NCA) and is currently used in the clinic for evaluation purposes.
ISBN:	9780769521046 0769521045
ISSN:	1063-7125
DOI:	10.1109/CBMS.2004.1311746