MR phase-contrast velocity mapping methods for measuring venous blood velocity in the deep veins of the calf

SummaryThe effects of graduated compression stockings (GCS) on venous blood velocity have not been established. In healthy subjects, most investigations showed no effect on blood velocity, but mixed results have been reported. In this investigation we to test the hypothesis that popliteal blood velocity is increased by properly fitted GCS. Time average peak velocity in the popliteal vein, as well as time average mean velocity, vein diameter and mean volumetric flow were measured by pulsed wave Doppler ultrasound in 25 healthy male volunteers without compression stockings and repeated with fitted thigh-length compression stockings. Measurements were obtained while supine and while sitting at rest and during ankle exercise. Thigh-length GCS did not increase popliteal vein blood velocity, diameter, or volumetric blood flow while supine or sitting, with or without ankle exercise.

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How We Perform Cardiovascular Magnetic Resonance Flow Assessment Using Phase-Contrast Velocity Mapping

Journal of Cardiovascular Magnetic Resonance ◽

10.1081/jcmr-200065639 ◽

2005 ◽

Vol 7 (4) ◽

pp. 705-716 ◽

Cited By ~ 74

Author(s):

Ping Chai ◽

Raad Mohiaddin

Keyword(s):

Cardiovascular Magnetic Resonance ◽

Magnetic Resonance ◽

Phase Contrast ◽

Velocity Mapping ◽

Resonance Flow

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A multi-center inter-manufacturer study of the temporal stability of phase-contrast velocity mapping background offset errors

Journal of Cardiovascular Magnetic Resonance ◽

10.1186/1532-429x-14-s1-w48 ◽

2012 ◽

Vol 14 (S1) ◽

Author(s):

Peter D Gatehouse ◽

Marijn P Rolf ◽

Karin Markenroth Bloch ◽

Philip J Kilner ◽

Martin J Graves ◽

...

Keyword(s):

Phase Contrast ◽

Temporal Stability ◽

Velocity Mapping

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THE COMPARISON OF STROKE VOLUME BY CINE MRI AND PHASE CONTRAST VELOCITY MAPPING

Journal of the American College of Cardiology ◽

10.1016/s0735-1097(13)60945-6 ◽

2013 ◽

Vol 61 (10) ◽

pp. E945

Author(s):

Takashi Tanimoto ◽

Yuichi Ozaki ◽

Kohei Ishibashi ◽

Takashi Yamano ◽

Yasushi Ino ◽

...

Keyword(s):

Stroke Volume ◽

Phase Contrast ◽

Cine Mri ◽

Velocity Mapping

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Venous Doppler in the Evaluation of Fetal Hydrops

Obstetrics and Gynecology International ◽

10.1155/2010/430157 ◽

2010 ◽

Vol 2010 ◽

pp. 1-7 ◽

Cited By ~ 5

Author(s):

C. Hofstaetter ◽

S. Gudmundsson

Keyword(s):

Doppler Sonography ◽

Umbilical Vein ◽

Venous Blood ◽

Blood Velocity ◽

Ductus Venosus ◽

Venous Blood Flow ◽

Fetal Hydrops ◽

Routine Work ◽

The Right ◽

Work Up

Objective. To examine venous blood flow velocity in different types of fetal hydrops and its value in the prediction of outcome of pregnancies.Methods. Venous Doppler sonography was performed in 100 hydropic fetuses from 15 to 37 weeks of gestation. Blood velocity was recorded in the right hepatic vein (HV), the ductus venosus (DV) and in the intra-abdominal part of the umbilical vein (UV). Blood velocity indices were calculated and pulsations in the umbilical vein noted and grouped into a single, double or triple flow pattern. Blood velocity was related to cause of hydrops.Results. Mortality was noted in 51 cases of which 19 were by termination of pregnancy. Mortality in the 30 with normal venous blood velocity was 35%, but 58% in cases of abnormal Doppler. Abnormal HV and DV blood velocities were recorded in 39 and 34 cases, respectively and were strongly related to mortality ( and , resp.). UV pulsations were noted in 49 fetuses and were significantly related to mortality (). Mortality and abnormal venous velocities were most frequent in the low-output hydrops group (79% and 75%, resp.).Conclusions. Abnormal venous blood velocity is related to mortality in pregnancies complicated by fetal hydrops. Venous Doppler sonography should be a part of the routine work-up of pregnancies complicated by fetal hydrops.

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Using magnetic resonance phase-contrast velocity mapping for diagnosing pelvic congestion syndrome

Phlebology The Journal of Venous Disease ◽

10.1258/phleb.2010.010049 ◽

2011 ◽

Vol 26 (4) ◽

pp. 157-161 ◽

Cited By ~ 9

Author(s):

L Q Meneses ◽

S Uribe ◽

C Tejos ◽

M E Andía ◽

M Fava ◽

...

Keyword(s):

Magnetic Resonance ◽

Phase Contrast ◽

Clinical Suspicion ◽

The Other ◽

Invasive Procedures ◽

Velocity Mapping ◽

Pelvic Congestion Syndrome ◽

Gonadal Vein ◽

Diagnostic Criterion ◽

Pelvic Congestion

Objective To evaluate phase-contrast velocity mapping (PCVM) as a diagnostic tool for pelvic congestion syndrome and comparing this approach with direct venography. Method We prospectively include nine women with clinical suspicion of pelvic congestion syndrome during a six-month period. All patients underwent a magnetic resonance phase-contrast scan before a direct venography. We considered a case of pelvic congestion syndrome when the PCVM showed a retrograde or slow (less than 5 cm/second) flow in any gonadal vein. This criterion was compared with the standard diagnostic criterion observed from a direct venography. Results Using direct venography we found 14 abnormal veins and all of them were correctly identified by the PCVM. The other four veins were found to be normal by the direct venography. However, two of them (the same patient) were abnormal in the PCVM, even though this patient had the classical symptoms of pelvic congestion syndrome. Conclusion PCVM is a useful tool for diagnosing pelvic contrast syndrome and can avoid invasive procedures such as direct venography.

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