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Haeneno, J.-P. d'; Klausz, Remy; Bossaert, Jean.
Compagnie Generale de Radiologie, 75 - Paris (France)1981
Compagnie Generale de Radiologie, 75 - Paris (France)1981
AbstractAbstract
[en] The invention concerns a tomodensitometric system. The system works in translation and rotation and is designed for the examination of a body C, comprising a source delivering a radiation beam and associated to it are fixed n detectors. These detectors deliver signals to associated measuring systems and designed to receive each one a fraction of the radiation beam, by means of successive displacements in translation and rotation of the source-detectors assembly each detectors delivers M signals which constitute elementary projection of the body C. During one translation the n detectors deliver M.n signals constituting n elementary projections of the body C. During p successive translations corresponding to p-1 sequential rotations of the source-detectors assembly, M.n.p signals allow to oblain from this M.n.p elementary signals corresponding to n.p elementary consecutive projections, m ensembles of Q signals. These Q signals are obtained by combination of signals taken from M.n.p signals. These m ensembles constitute m projections-combinations designed to reconstitute the image of the body C
[fr]
L'invention concerne un dispositif de tomodensitometrie, du type a translation-rotation, destine a l'examen d'un corps C comportant une source fournissant un faisceau utile de rayonnement et, associes de facon rigide a cette source, une serie de n detecteurs associes chacun a un systeme de mesure de signaux detectes et destines a recevoir chacun une fraction du faisceau utile de rayonnement, des moyens de deplacements successifs en translation et en rotation de l'ensemble source-detecteurs, chacun des detecteurs fournissant, au cours de chaque translation, M signaux, l'ensemble de ces M signaux constituant une projection elementaire du corps C. Les n detecteurs fournissent, au cours d'une translation, M.n signaux constituant n projections elementaires du corps C, et, au cours de p translations successives correspondant a p-1 rotations sequentielles de l'ensemble source-detecteurs, M.n.p signaux, permettent d'obtenir, a partir de ces M.n.p signaux elementaires correspondant a n.p projections elementaires consecutives, m ensembles de Q signaux, ces Q signaux etant obtenus par des combinaisons de signaux pris parmi ces M.n.p signaux. Ces m ensembles constituent m projections-combinaisons destinees a la reconstitution de l'image du corps COriginal Title
Dispositif de tomodensitometrie et procede d'exploration et de reconstruction d'images utilisant un tel dispositif
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28 Aug 1981; 15 p; FR PATENT DOCUMENT 2476474/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
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Patent
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AbstractAbstract
[en] A brief survey is presented of radiodiagnostic applications of computerized tomography using 3rd generation instrumentation (rotary-rotary systems). (Z.S.) 4 figs
Original Title
Prevrat v modernej radiodiagnostike
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Source
English translation available from Nuclear Information Center, 156 16 Prague-Zbraslav, Czech Republic, at USD 10.- per typewritten page.
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Journal Article
Journal
Pulsus. Medicina et Pharmacia; ISSN 1210-3136;
; (no.1); p. 30-31

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AbstractAbstract
[en] The aim of this study was to assess the role of virtual otoscopy and 3D ossicular reconstruction in the preoperative assessment of the ossicles in chronic suppurative otitis media. Thirty three patients of chronic suppurative otitis media with conductive deafness (air-bone gap > 35 dB) were included in this prospective study. All patients underwent axial multidetector CT. The axial CT data set was utilized for multiplanar 2D reformations as well as virtual otoscopy (VO) and 3D reconstructions. The imaging findings on these two techniques were read independently by two radiologists with respect to different parts of the ossicular chain by using a three-point scoring system and were compared with surgical findings. Both imaging techniques had comparable accuracy for evaluation of larger ossicular parts. However, for evaluation of stapes superstructure, VO/3D images were more accurate (85.29%) than 2D images (76.97%). Assessment of the lenticular process and incudostapedial joint by HRCT and 2D reformatted images was not reliable (P > 0.1); however, significant correlation (P < 0.001) was present between VO/3D and the operative findings. Virtual otoscopy improves evaluation of the ossicular chain particularly that of smaller structures such as the lenticular process, incudostapedial joint and stapes superstructure which may influence decisions regarding planning of ossiculoplasty. (orig.)
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Available from: http://dx.doi.org/10.1007/s00330-008-1282-5
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AbstractAbstract
No abstract available
Original Title
Aspect TDM des tophi goutteux
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43. French meeting on radiology; 43. Journee Francaise de Radiologie; Paris (France); 26 Oct 1995
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Journal Article
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Conference
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Van Camp, Laurent; Deak, Paul; Haspeslagh, Marc; Coenegrachts, Kenneth, E-mail: laurent.vancamp@student.kuleuven.be, E-mail: Paul.Deak@ge.com, E-mail: marc.haspeslagh@azsintjan.be, E-mail: kenneth.coenegrachts@azsintjan.be2018
AbstractAbstract
[en] ObjectiveTo evaluate a dynamic contrast-enhanced CT-protocol and compare this method with standard of care monophasic portovenous CT for detection of colorectal liver metastases.
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S0720048X18302985; Available from http://dx.doi.org/10.1016/j.ejrad.2018.08.022; © 2018 Elsevier B.V. All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Zonneveld, F.W.
Rijksuniversiteit Utrecht (Netherlands)1987
Rijksuniversiteit Utrecht (Netherlands)1987
AbstractAbstract
[en] The basis for this dissertation is the combination of the best set of high-resolution CT scanning parameters, on the one hand, and the technique of scanning perpendicular to the tissue interface, or parallel to an elongated anatomical structure (direct multiplanar CT technique) on the other. Although this technique yields better visualization of a number of anatomical details, the problem remains that the radiologist is as yet unfamiliar with these alternative cross-sectional planes. For this reason, a technique for cryosectioning fresh frozen specimens was selected and improved to create cross-sectional images that can be correlated with the direct multiplanar CT scans. The selection of special scan planes, the positioning, preparation and examination of the patient, and the CT and correlative anatomy are discussed separately for the temporal bone and the orbit. A few clinical applications are discussed. In the orbit, the value of high-resolution CT is demonstrated in the establishment of the relationship between space-occupying lesions and the optic nerve, and in the management of fractures of the orbital floor. 548 refs.; 253 figs.; 24 tabs
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20 Oct 1987; 222 p; Contains summary in Dutch, glossary of terms and subject index.; Proefschrift (Dr.).
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Miscellaneous
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Thesis/Dissertation
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Pinheiro, R.S.A.
Sociedade Brasileira de Radiologia, Sao Paulo1986
Sociedade Brasileira de Radiologia, Sao Paulo1986
AbstractAbstract
[en] Published in summary form only
Original Title
Demonstracao radiologica (TC) da degeneracao anterograda (Walleriana) do feixe cortico-espinhal
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Source
1986; 1 p; 18. Meeting on Radiology from Rio de Janeiro; Rio de Janeiro, RJ (Brazil); 19-22 Nov 1986; 10. Meeting on Radiology Residents from Rio de Janeiro; Rio de Janeiro, RJ (Brazil); 19-22 Nov 1986
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Miscellaneous
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Conference
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AbstractAbstract
[en] Evidence is presented for the desirability and cost-effectiveness of acquiring computerized tomography (CT) facilities for selected VA tertiary care facilities. The rationale is that hospitals offering comprehensive multidisciplinary therapeutic services must also possess equally comprehensive diagnostic capabilities. The current status and clinical applications of CT are discussed, together with cost analysis, workload data, and relative costs of CT exams at participating VA hospitals having in-house capabilities. Criteria are presented for the acquisition and assignment of CT units, and costs are given for CT scans on a contract basis
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1980; 62 p; Available from NTIS, PC A04/MF A01
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Report
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Boatta, Emanuele; Corona, Mario; Cannavale, Alessandro; Fanelli, Fabrizio; Cirelli, Carlo; Medici, Lorenzo de, E-mail: alessandro.cannavale@hotmail.com2013
AbstractAbstract
[en] Our aim was to assess the efficacy and tolerability of drug-eluting beads-transarterial chemoembolization (DEB-TACE) in the treatment of hepatocellular carcinoma (HCC), evaluating the response to the treatment after 1, 6, 12, and 24 months with multidetector computed tomography (MDCT) comparing European Association for the study of the Liver (EASL) and modified Response Evaluation Criteria in Solid Tumors (mRECIST) criteria. We enrolled 154 patients with uni- or multifocal HCC who underwent a DEB-TACE. A total of 278 HCC nodules were treated. CT follow-up was performed at 1, 6, 12, and 24 months after the procedure according to the EASL and RECIST criteria evaluating overall target and target nodule response. We also analyzed the shrinking of nodules in relation to response to treatment. A total of 278 nodules of HCC underwent TACE by using DC-Beads: At 24, months complete response was similar for EASL and RECIST criteria (112 vs. 121 nodules) with optimal accordance between methods and readers with k = 0.9. Partial Response resulted significantly different among the two methods within the first month, otherwise was similar after 24-month follow-up. Similar results in both methods were found for nodules classified as Stable Disease (P > 0.05). Progressive Disease results were similar in both the groups according to both the classification criteria without any significant difference (P > 0.05). Our study confirmed that EASL and mRECIST criteria are both effective methods for patient follow-up, however with some technical differences
Primary Subject
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Available from http://dx.doi.org/10.4103/0971-3026.116564; Available from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3777321; PMCID: PMC3777321; PMID: 24082476; PUBLISHER-ID: IJRI-23-126; OAI: oai:pubmedcentral.nih.gov:3777321; Copyright: (c) Indian Journal of Radiology and Imaging; This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Indian Journal of Radiology and Imaging - New Series (Print); ISSN 0971-3026;
; v. 23(2); p. 126-133

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AbstractAbstract
[en] In April 1983, Prototype I of the Meditech Whole Body CT Scanner (Euroscanner) was installed at Frenchay Hospital as part of a Department of Health and Social Security (DHSS) trial to assess its function and reliability. After a few months usage, several modifications were made to the machine. The official trial therefore commenced on Prototype II in the middle of January 1984 and lasted until the end of July 1984. During that time a planned changeover took place in the Neuroradiological Department, with the replacement of a ten-year-old EMI 1010 head scanner by an IGE 8800. This meant that from the beginning of May until the end of July, the Meditech Scanner was the only available CT scanner in a busy Regional Department with District Hospital commitments as well. This paper provides a summary of the clinical experiences resulting from the use of the machine, and is a rider to that in which Greensmith et al (1985) describe the physical properties of the machine. (author)
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