1.Left ventricular blood flow velocity line analysis in normal person;a color M-mode digitizing study.
Chong Hun PARK ; Eun Seok JEON ; Ki Nam PARK ; Byeng Su KWAK ; Seung Sik KANG ; Dong Hyuk LEE ; Hee Chan KIM ; Byoung Goo MIN
Journal of the Korean Society of Echocardiography 1993;1(2):145-151
No abstract available.
Blood Flow Velocity*
2.Quantitative Ultrasound Measurements of Blood Flow Velocity and Turbulence.
Yigang DU ; Lei ZHU ; Xujin HE ; Helin FENG
Chinese Journal of Medical Instrumentation 2018;42(3):157-160
The paper described the hemodynamics of blood flow based on fluid mechanics and its corresponding formulas, and revealed the limitation of blood flow velocity measurement for non-laminar flow when using the conventional pulse wave Doppler. The paper demonstrated the calculation of turbulence for blood flow based on velocity directions and quantified the turbulence according to the presented formulas. Two methods were introduced and the simulated results were analyzed. An example using real data based on ultrasound vector flow imaging for calculating the turbulence of blood flow was presented in the end.
Blood Flow Velocity
;
Ultrasonography
3.Umbilical Venous Blood Gases, Middle Cerebral, and Renal Arterial Blood Flow Velocity Waveforms in Intrauterine Growth Restriction Fetuses.
Yoon Ha KIM ; Tae Bok SONG ; Kyoung Seon KIM ; So Yi RIM ; Seok Mo KIM ; Ji Soo BYUN
Korean Journal of Perinatology 2001;12(2):145-154
No abstract available.
Blood Flow Velocity*
;
Fetus*
;
Gases*
4.Application research on ultrasonic blood flow velocity measurement.
Xiaochao ZHANG ; Qing ANG ; Weidong WANG
Chinese Journal of Medical Instrumentation 2014;38(1):50-56
The detection of blood flow velocity has great significance for blood vessel monitoring and the research of cardiovascular pathogenesis. Blood flow velocity measurement based on ultrasonic is becoming more and more popular in doctors and patients compare to several other techniques in nowadays, as they are non-invasive, cheap and fast. Most of the traditional ultrasonic blood flow velocity measurement methods are based on the Doppler frequency shift, but theses methods have some limitations, such as angle dependence, limited spatial resolution and so on. Therefore, blood flow velocity techniques based on non-Doppler frequency shift also get rapid development in recent years. This article mainly summarizes the techniques of blood flow velocity estimation based on ultrasonic in these two aspects.
Blood Flow Velocity
;
Humans
;
Ultrasonography
6.Change of Cerebral Blood Flow Velocity in Normal Newborn Infants.
Sang Hee KIM ; Se Jin KANG ; Chang Sung SON ; Pyung Hwa CHOE ; Nam Joon LEE
Journal of the Korean Pediatric Society 1989;32(8):1037-1044
No abstract available.
Blood Flow Velocity*
;
Humans
;
Infant, Newborn*
7.Analysis of doppler blood flow velocity waveforms of the fetal umbilical artery in normal pregnancies.
In Sik LEE ; Jae Hyun CHUNG ; Young Tak KIM ; Dong Geun CHUNG ; Ahm KIM ; Jung Eun MOK
Korean Journal of Obstetrics and Gynecology 1991;34(8):1090-1095
No abstract available.
Blood Flow Velocity*
;
Pregnancy*
;
Umbilical Arteries*
8.Doppler blood flow velocity waveforms of the fetal descending thoracic aorta trough the nomal pregnancy.
Dong Ho KIM ; Byeong Jun CHEONG ; Hong Bae KIM
Korean Journal of Obstetrics and Gynecology 1993;36(7):1248-1253
No abstract available.
Aorta, Thoracic*
;
Blood Flow Velocity*
;
Pregnancy*
9.Longitudinal change of cerebral blood flow velocity in neonates with the doppler technique.
Kook In PARK ; Dong Gwan HAN ; Ran NAMGUNG ; Chul LEE ; Jin Suk SUH ; Myung Joon KIM
Journal of the Korean Pediatric Society 1992;35(1):60-68
No abstract available.
Blood Flow Velocity*
;
Humans
;
Infant, Newborn*
10.Doppler blood flow velocity waveforms of the fetal descending thoracic aorta in normal pregnancies.
In Sik LEE ; Young Bae LEE ; Young Tak KIM ; Dong Geun CHUNG ; Ahm KIM ; Jung Eun MOK
Korean Journal of Perinatology 1991;2(1):22-29
No abstract available.
Aorta, Thoracic*
;
Blood Flow Velocity*
;
Pregnancy*
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