High-Frame-Rate Color Doppler Echocardiography: A Quantitative Comparison of Different Approaches.
IEEE Trans Ultrason Ferroelectr Freq Control
; 67(5): 923-933, 2020 05.
Article
en En
| MEDLINE
| ID: mdl-31825865
ABSTRACT
Ultrasound color Doppler imaging (CDI) provides a map of the axial blood flow velocities in a 2-D/3-D region of interest. While CDI is clinically effective for a qualitative analysis of abnormal blood flows, e.g., for valvular disease in cardiology, it is in limited use for quantitative measures, mainly hampered by low frame rate and measurement bias. These limitations can be reduced by different approaches toward high-frame-rate (HFR) imaging at the expense of reduced image quality and penetration depth. The aim of this study was to compare the impact of different HFR sequences on CDI quantitatively. Different cardiac scan sequences, including diverging waves and multiline transmission, were designed, implemented on a research system, and compared in terms of patient safety parameters, image quality, and penetration depth. Furthermore, in vivo images were acquired and compared for healthy volunteers. Results showed that the HFR techniques spread artifacts on larger areas than the standard single-line scans (> +50%). In addition, due to patient safety limitations, they reduce the penetration depth up to -5 cm. On the other hand, the HFR techniques provide comparable velocity estimates (relative difference <6%) and enhance the time resolution of the color Doppler images, achieving frame rates up to 625 Hz in continuous acquisition.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Procesamiento de Imagen Asistido por Computador
/
Ecocardiografía Doppler en Color
/
Corazón
Tipo de estudio:
Qualitative_research
Límite:
Humans
Idioma:
En
Revista:
IEEE Trans Ultrason Ferroelectr Freq Control
Asunto de la revista:
MEDICINA NUCLEAR
Año:
2020
Tipo del documento:
Article