Publicaciones científicas

Dual-source CT coronary angiography: image quality and optimal reconstruction interval

Bastarrika G (1), Arraiza M, Arias J, Broncano J, Zudaire B, Pueyo JC, García del Barrio L.
(1) Servicio de Radiología, Clínica Universidad de Navarra, Pamplona, España.

Revista: Radiologia

Fecha: 01/08/2009

Radiología

OBJECTIVE

To evaluate the effect of average heart rate on the quality of images of the coronary arteries and to determine the optimal reconstruction interval in nonselected patients undergoing DSCT coronary imaging.

MATERIALS AND METHODS

We studied 28 consecutive subjects (26 men, 2 women; mean age 60+/-12 years) undergoing contrast-enhanced DSCT (Somatom Definition, Siemens) coronary angiography. Data sets were reconstructed in 5% steps from 30% to 80% of the R-R interval. Two blinded independent readers assessed the image quality of the whole coronary tree and of each coronary artery using a four-point scale (1: impossible to evaluate, 4: excellent quality).

RESULTS

Mean heart rate during scanning was 73.1+/-14.8 bpm (range, 49-107 bpm). In the best reconstruction interval, excellent diagnostic image quality (score 4) was achieved for 98.8% (83/84) of coronary arteries. Very good interobserver agreement was observed for image quality rating (kappa=0.77) and for selection of the optimal reconstruction interval (kappa=0.86). Mean image quality score for the whole coronary tree was 2.84+/-0.31. No significant correlation was found between the average heart rate and the mean quality scores (r=0.108). No significant differences were found in the quality of images of the coronary arteries in systolic and diastolic reconstructions in each patient.

CONCLUSIONS

DSCT makes it possible to obtain excellent coronary angiograms independent of the heart rate. Reconstructions can be obtained in either the diastolic or systolic phase without significant differences in image quality, even at high heart rates.

CITA DEL ARTÍCULO  Radiologia. 2009 Jul-Aug;51(4):376-84. doi: 10.1016/j.rx.2008.11.001. Epub 2009 Mar 17.

tal vezLE INTERESE

¿QUÉ TECNOLOGÍA UTILIZAMOS?

La Clínica es el hospital privado con mayor dotación tecnológica de España, todo en un único centro.

Imagen de un PET, tecnología de vanguardia en la Clínica Universidad de Navarra

NUESTROS
PROFESIONALES

Los profesionales de la Clínica realizan una labor continuada de investigación y formación, siempre en beneficio del paciente.

Imagen profesionales de la Clínica Universidad de Navarra

POR QUÉ VENIR
A LA CLÍNICA

Conozca por qué somos diferentes a otros centros sanitarios. Calidad, rapidez, comodidad y resultados.

Imagen del edificio de la Clínica Universidad de Navarra