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Titolo:
The influence of motion artifacts conditioned by reconstruction, on the coronary calcium score in multislice spiral CT.
Autore:
Mahnken, AH; Sinha, AM; Wildberger, JE; Krombach, GA; Schmitz-Rode, T; Gunther, RW;
Indirizzi:
Rhein Westfal TH Aachen, Univ Klinikum, Radiol Diagnost Klin, D-52074 Aachen, Germany Rhein Westfal TH Aachen Aachen Germany D-52074 , D-52074 Aachen, Germany Rhein Westfal TH Aachen, Univ Klinikum, Med Klin 1, D-5100 Aachen, GermanyRhein Westfal TH Aachen Aachen Germany D-5100 1, D-5100 Aachen, Germany
Titolo Testata:
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
fascicolo: 10, volume: 173, anno: 2001,
pagine: 888 - 892
SICI:
1438-9029(200110)173:10<888:TIOMAC>2.0.ZU;2-R
Fonte:
ISI
Lingua:
GER
Soggetto:
ELECTRON-BEAM CT; ULTRAFAST COMPUTED-TOMOGRAPHY; ARTERY CALCIFICATION; QUANTIFICATION; REPRODUCIBILITY; DISEASE; HEART;
Keywords:
coronary calcification; coronary heart disease; multislice CT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Mahnken, AH Rhein Westfal TH Aachen, Univ Klinikum, Radiol Diagnost Klin, Pauwelsstr 30, D-52074 Aachen, Germany Rhein Westfal TH Aachen Pauwelsstr 30 Aachen Germany D-52074
Citazione:
A.H. Mahnken et al., "The influence of motion artifacts conditioned by reconstruction, on the coronary calcium score in multislice spiral CT.", ROFO-F RONT, 173(10), 2001, pp. 888-892

Abstract

Purpose: A major problem of the quantification of coronary calcifications is a high variability of the coronary calcium score between recurrent examinations and different observers. Aim of our study is to evaluate the influence of different RR-intervals on the coronary calcium score utilizing retrospectively gated Multislice Spiral CT (MSCT) data sets. Materials and Method: 50 consecutive patients underwent MSCT examination (Somatom Volume Zoom,Siemens, Forchheim, G) utilizing a standardized scan protocol (4 x 2.5 mm collimation, 3 mm increment, tube current 133 mAs, tube voltage 120 kV). Retrospectively gated image reconstruction was performed every 10% of the RR interval. Coronary calcification was evaluated by the Agatston score. Coronary risk assessment was performed in all patients with image reconstructionbeginning at 80% of the RR interval. The reconstruction intervals with theleast motion artifacts were identified and chosen as reference for a reevaluation of the coronary risk. The results of different reconstruction timeswere compared. Results: The mean calcium score was 551.6. The calcium score varied between 512.2 (90%) and 571.7 (70%), depending on the image reconstruction interval. Compared to the mean calcium score a new classification of the coronary risk was necessary in 7/50 of the patients at 80% reconstruction interval, and in 2/50 of the patients at 50% of the RR interval, respectively. Conclusion: Movement of the coronary arteries at different image reconstruction intervals has an important influence on the coronary calciumscore. Based on our data, we propose image reconstruction at 50% of the RRinterval for evaluation of the coronary calcium score by MSCT.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 07:03:08