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Vertebral artery volume flow in human beings.
P B Licht1, H W Christensen, P F Høilund-Carlsen
1Department of Clinical Physiology and Nuclear Medicine, Odense University Hospital, Denmark. peter.licht@ouh.dk
Journal of Manipulative and Physiological Therapeutics
|September 9, 1999
Summary
Vertebral artery blood flow volume remains unchanged during neck rotation or after spinal manipulation therapy in healthy individuals. Advanced Doppler ultrasound confirmed no significant changes in vertebral artery perfusion.
Area of Science:
- Vascular Ultrasound
- Hemodynamics
- Cervical Spine Biomechanics
Background:
- Vertebral artery hemodynamics are crucial for understanding blood flow.
- Previous Doppler studies on vertebral artery volume flow were limited by technique errors.
- Advanced color-coded duplex sonography offers reliable volume flow assessment.
Purpose of the Study:
- To investigate vertebral artery volume blood flow using advanced color-coded duplex sonography.
- To assess changes during cervical rotation.
- To evaluate effects before and after spinal manipulation therapy.
Main Methods:
- Randomized controlled study conducted in a university hospital vascular laboratory.
- Twenty healthy university students participated.
- Advanced color-coded duplex sonography was employed for measurements.
Main Results:
- No significant changes in vertebral artery volume blood flow were observed during cervical rotation.
- Spinal manipulation therapy did not alter vertebral artery volume blood flow.
- Flow velocity changes during rotation may be due to diameter variations.
Conclusions:
- This is the first in vivo Doppler study on human vertebral artery volume blood flow.
- Results suggest stable vertebral artery perfusion in asymptomatic subjects despite positional changes.
- No significant impact of spinal manipulation therapy on vertebral artery volume blood flow was detected.