MAGNETIC-RESONANCE MEASUREMENT OF BLOOD-FLOW IN PERIPHERAL VESSELS AFTER ACUTE EXERCISE

被引：24

作者：

MEYER, RA

FOLEY, JM

HARKEMA, SJ

SIERRA, A

POTCHEN, EJ

机构：

[1] Department of Radiology, Michigan State University, East Lansing

[2] Department of Physiology, Michigan State University, East Lansing

[3] Department of Health and Physical Education, Michigan State University, East Lansing

来源：

MAGNETIC RESONANCE IMAGING | 1993年 / 11卷 / 08期

基金：

美国国家卫生研究院;

关键词：

MAGNETIC RESONANCE ANGIOGRAPHY; CINE PHASE-CONTRAST; MUSCLE BLOOD FLOW;

D O I：

10.1016/0730-725X(93)90235-6

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Velocity-encoded Cine magnetic resonance imaging (MRI) was used to measure blood flow in the anterior tibial artery (AT), posterior tibial artery (PT), and popliteal artery of adult human subjects (mean age 29 yr) before and after 90 s of ankle dorsiflexion exercise. Before exercise, mean flow, peak systolic velocity, and end-diastolic velocity in AT were 8.1 +/- 1.6 (SE, n = 6) ml/min, 26.9 +/- 2.6 cm/s, and -0.6 +/- 0.4 cm/s, respectively. After exercise, mean flow and peak systolic velocity in AT increased by 19-fold and 3-fold, respectively, and end-diastolic velocity increased to 8.7 +/- 1.1 cm/s. Flow in popliteal artery above its bifurcation was similar to the sum of flows in AT and PT, both before and after exercise. Flow in AT declined exponentially after exercise with a mean half-time of 4 min. The results demonstrate the utility of MR phase-encoded flow-velocity measurements for physiological studies of peripheral vascular dynamics after exercise.

引用

页码：1085 / 1092

页数：8

共 19 条

[1]

Rowell, Muscle blood flow in humans: How high can it go?, Med. Sci. Sports Exerc., 20, pp. S97-S103, (1988)

[2]

Martin, Kohrt, Malley, Korte, Stoltz, Exercise training enhances leg vasodilatory capacity of 65-year-old men and women, J. Appl. Physiol., 69, pp. 1804-1809, (1990)

[3]

Sullivan, Binkley, Unverferth, Leier, Hemodynamic and metabolic responses of the exercising lower limb of humans, J. Lab. Clin. Med., 110, pp. 145-152, (1987)

[4]

Vollestad, Wesche, Sejersted, Gradual increase in leg oxygen uptake during repeated submaximal contractions in humans, J. Appl. Physiol., 68, pp. 1150-1156, (1990)

[5]

Nishimura, Time-of-flight MR angiography, Magn. Reson. Med., 14, pp. 194-201, (1990)

[6]

Caputo, Masui, Gooding, Chang, Higgins, Popliteal and tibioperoneal arteries: Feasibility of two-dimensional time-of-flight MR angiography and phase velocity mapping, Radiology, 182, pp. 387-392, (1992)

[7]

Caputo, Kondo, Masui, Geraci, Foster, O'Sullivan, Higgins, Right and left lung perfusion: In vitro and in vivo validation with oblique-angle, velocity-encoded Cine MR imaging, Radiology, 180, pp. 693-698, (1991)

[8]

Pelc, Shimakawa, Glover, Phase-contrast cine MRI, Book of abstracts: Eighth Annual Meeting of the Society of Magnetic Resonance in Medicine, (1989)

[9]

Walker, Souza, Dumoulin, Quantitative flow measurement in phase contrast MR angiography, J. Comp. Assist. Tomogr., 12, pp. 304-313, (1988)

[10]

Fisher, Meyer, Adams, Foley, Potchen, Direct relationship between proton T<sub>2</sub> and exercise intensity in skeletal muscle MR images, Invest. Radiol., 25, pp. 480-485, (1990)

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