NDLI: Wavelets, local tomography and interventional X-Ray imaging

Content Provider	IEEE Xplore Digital Library
Author	Bilgot, A. Perrier, V. Desbat, L.
Copyright Year	2004
Description	Author affiliation: Fac. de Medecine, IMAG, Grenoble, France (Bilgot, A.)
Abstract	Interventional reconstruction of tomographic sections is still a challenging task: interventional scanners obstruct the operative field, and CT-assisted surgical acts are known to be irradiant. An alternative consists in using a C-Arm fitted out with a digital detector for X-Ray data acquisition, but one has then to cope with the limited size of the existing detectors: they are not wide enough to collect the whole beam emerging from a section, and thus prevent from applying conventional reconstruction techniques. The work we present here relies on such an architecture, and aims at applying local tomography principles to this context: when only X-Ray projections through a central section of a larger one are available, one refers to the interior problem, for which it is known that the density of the central section is then not recoverable, but surfaces of discontinuity between anatomical surfaces are theoretically accessible. We propose an implementation of a wavelet-based approach of this problem inspired by a work by Holschneider, where it is proved that the Radon Transform is nothing but a wavelet transform for a well chosen analysis "wavelet". Numerical tests show that our approach supplies reconstruction results from local measurements preserving discontinuities.
Starting Page	3505
Ending Page	3509
File Size	827489
Page Count	5
File Format	PDF
ISBN	0780387007
ISSN	10823654
e-ISBN	0780387015
DOI	10.1109/NSSMIC.2004.1466642
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-16
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tomography X-ray imaging Image reconstruction Wavelet analysis X-ray detection X-ray detectors Wavelet transforms Surgery Data acquisition Surface reconstruction
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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