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Estimation of the 3D positioning of anatomic structures from radiographic projection and volume knowledge

Abstract

The aim of this study is to develop a method to estimate the 3D positioning of an anatomic structure using the knowledge of its volume (provided by CT or MRI) combined with a single radiographic projection. This method could be applied in stereotactic surgery or in the study of 3D body joints kinematics. The knowledge of the 3D anatomical structure, available from CT (or in future MRI) is used to estimate the orientation of the projection that better match the actual 2D available projection. For this purpose it was necessary to develop an algorithm to simulate the radiographic projections. The radiographic image formation process has been simulated utilizing the geometrical characteristics of a real radiographic device and the volumetric anatomical data of the patient, obtained by 3D diagnostic CT images. The position of the patient volume respect to the radiological device is estimated comparing the actual radiographic projection with those simulated, maximising a similarity index. To assess the estimation, the 3D positioning of a segmented vertebra has been used as a test volume. The assessment has been carried out only by means of simulation. Estimation errors have been statistically evaluated. Conditions of mispositioning and noise have been also considered. The  More>>
Authors:
Bifulco, P; Cesarelli, M; Roccasalva Firenze, M; Verso, E; Sansone, M; Bracale, M [1] 
  1. University of Naples, Federico II, Electronic Engineering Department, Bioengineering Unit, Via Claudio, 21 - 80125 Naples (Italy)
Publication Date:
Dec 31, 1998
Product Type:
Conference
Report Number:
INIS-CY-0004; CONF-9806202-
Reference Number:
SCA: 550602; PA: AIX-30:017084; EDB-99:043336; SN: 99002082127
Resource Relation:
Conference: 8. Mediterranean conference on medical and biological engineering and computing (Medicon `98), Lemesos (Cyprus), 14-17 Jun 1998; Other Information: DN: 13 fers., 4 figs., 1 tabs. The proceedings of this meeting are available on CD-ROM in PDF, at the price of US$50, from the Cyprus Association of Medical Physics and Biomedical Engineering, P.O.Box 24039, 1700 Nicosia, Cyprus. The CD-ROM makes use of Abode Acrobat PDF (Portable Document Format). To read the files the Abode Acrobat reader has to be installed on your system. A copy is provided with the CD-ROM; PBD: 1998; Related Information: Is Part Of Proceedings of the 8. Mediterranean Conference on Medical and Biological Engineering and Computing (Medicon `98); Christofides, Stelios; Pattichis, Constantinos; Schizas, Christos; Keravnou-Papailiou, Elpida; Kaplanis, Prodromos; Spyros, Spyrou; Christodoulides, George; Theodoulou, Yiannis [eds.]; PB: 220 p.
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; ANATOMY; COMPUTER CALCULATIONS; COMPUTERIZED TOMOGRAPHY; NMR IMAGING; NUCLEAR MAGNETIC RESONANCE; X-RAY RADIOGRAPHY
OSTI ID:
331891
Research Organizations:
Cyprus Association of Medical Physics and Biomedical Engineering (CAMPBE), Nicosia (Cyprus); The Department of Computer Science, University of Cyprus, Nicosia (Cyprus)
Country of Origin:
Cyprus
Language:
English
Other Identifying Numbers:
Other: ON: DE99619912; ISBN 9963-607-14-4; TRN: CY9900007017084
Availability:
INIS; OSTI as DE99619912
Submitting Site:
INIS
Size:
pp. 71
Announcement Date:

Citation Formats

Bifulco, P, Cesarelli, M, Roccasalva Firenze, M, Verso, E, Sansone, M, and Bracale, M. Estimation of the 3D positioning of anatomic structures from radiographic projection and volume knowledge. Cyprus: N. p., 1998. Web.
Bifulco, P, Cesarelli, M, Roccasalva Firenze, M, Verso, E, Sansone, M, & Bracale, M. Estimation of the 3D positioning of anatomic structures from radiographic projection and volume knowledge. Cyprus.
Bifulco, P, Cesarelli, M, Roccasalva Firenze, M, Verso, E, Sansone, M, and Bracale, M. 1998. "Estimation of the 3D positioning of anatomic structures from radiographic projection and volume knowledge." Cyprus.
@misc{etde_331891,
title = {Estimation of the 3D positioning of anatomic structures from radiographic projection and volume knowledge}
author = {Bifulco, P, Cesarelli, M, Roccasalva Firenze, M, Verso, E, Sansone, M, and Bracale, M}
abstractNote = {The aim of this study is to develop a method to estimate the 3D positioning of an anatomic structure using the knowledge of its volume (provided by CT or MRI) combined with a single radiographic projection. This method could be applied in stereotactic surgery or in the study of 3D body joints kinematics. The knowledge of the 3D anatomical structure, available from CT (or in future MRI) is used to estimate the orientation of the projection that better match the actual 2D available projection. For this purpose it was necessary to develop an algorithm to simulate the radiographic projections. The radiographic image formation process has been simulated utilizing the geometrical characteristics of a real radiographic device and the volumetric anatomical data of the patient, obtained by 3D diagnostic CT images. The position of the patient volume respect to the radiological device is estimated comparing the actual radiographic projection with those simulated, maximising a similarity index. To assess the estimation, the 3D positioning of a segmented vertebra has been used as a test volume. The assessment has been carried out only by means of simulation. Estimation errors have been statistically evaluated. Conditions of mispositioning and noise have been also considered. The results relative to the simulation show the feasibility of the method. From the analysis of the errors emerges that the searching procedure results robust respect to the addition of white Gaussian noise. (authors) 13 fers., 4 figs., 1 tabs.}
place = {Cyprus}
year = {1998}
month = {Dec}
}