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Titolo:
Technical foundations and scanner characteristics of electron beam computed tomography
Autore:
Becker, CR; Schatzl, M; Schoepf, UJ; Bruning, R; Reiser, MF;
Indirizzi:
UnivGermany, Klinikum Grosshadern, Inst Radiol Diagnostik, D-81377 Munich,Univ Munich Munich Germany D-81377 st Radiol Diagnostik, D-81377 Munich,
Titolo Testata:
RADIOLOGE
fascicolo: 12, volume: 38, anno: 1998,
pagine: 987 - 992
SICI:
0033-832X(199812)38:12<987:TFASCO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
GER
Soggetto:
CT; QUANTIFICATION; DOSIMETRY;
Keywords:
electron beam tomography; physical principles; x-ray radiation exposure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Becker, CR Univ5,unich, Klinikum Grosshadern, Inst Radiol Diagnostik, Marchioninistr 1 Univ Munich Marchioninistr 15 Munich Germany D-81377 ninistr 1
Citazione:
C.R. Becker et al., "Technical foundations and scanner characteristics of electron beam computed tomography", RADIOLOGE, 38(12), 1998, pp. 987-992

Abstract

Purpose: In this review the technical principle and scanner characteristics of electron beam computertomography (EBCT) are discussed. Methods:In contrast to conventional CT, image acquisition in EBCT is achieved without mechanically moving parts. This construction allows for short acquisition times in investigating given anatomical regions (100 ms per slice) or up to 8 levels without table movement and short interscan delays (50 ms per slice). Results: Depending on the nature of the investigation, the scanner can be used in the single slice, continuous volume scanning and multi slice mode. The single slice mode is used for detection and quantification of coronary calcifications and for CT angiography of the coronary vessels. Equivalent to the spiral mode in conventional CT, continous volume scanning may be usedfor routine investigation of the chest and abdomen. Functional investigations of the heart and perfusion measurement of different organs can be performed in multi slice mode. Because of the geometry of the electron beam scanner, radiation exposure for certain investigations is above the exposure with conventional CT. Conclusion: Future developements will focus on dose efficient radiation collimation, high resolution detector systems and artefact reducing reconstruction kernels.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/08/20 alle ore 08:12:01