The reproducibility of color Doppler duplex sonography in the measurement of renal arterial blood velocity
| Autor: | Yoshiki Yagita, Hideki Etani, Naokazu Kinoshita, Naohiko Imuta, Tadaatsu Nukada |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Adult
Male medicine.medical_specialty Duplex ultrasonography Acoustics and Ultrasonics Coefficient of variation Biophysics Hemodynamics Kidney Renal Circulation symbols.namesake Renal Artery Reference Values Humans Medicine Radiology Nuclear Medicine and imaging Ultrasonography Doppler Color Observer Variation Reproducibility Radiological and Ultrasound Technology business.industry Reproducibility of Results Blood flow Surgery Renal blood flow symbols Arterial blood Female business Nuclear medicine Doppler effect |
| Zdroj: | Ultrasound in Medicine & Biology. 23:813-819 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/s0301-5629(97)00068-9 |
| Popis: | In this study, the reproducibility of color Doppler duplex sonography for repeated measurements of renal blood flow was evaluated in 14 healthy subjects. We examined the reproducibility for different examiners and different time intervals between the examinations. Doppler frequency sonograms were analyzed with several parameters, and statistical evaluation was performed by calculating both the correlation coefficient (r) and coefficient of variation (CV). Peak systolic velocity (S), early diastolic velocity (D1) and mean velocity (MV) showed good reproducibility (r = 0.902-0.992, CV = 2.15-8.16%). On the other hand, end-diastolic velocity (D2), acceleration time (AT) and acceleration index (AI) showed poor reproducibility. We conclude that the reproducibility of this method is acceptable for repeated measurements of renal blood velocity, using suitable parameters S, D1 and MV. |
| Databáze: | OpenAIRE |
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