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Rheoencephalography (REG)

Rheoencephalography (REG) is a noninvasive method for investigating the volumetric blood flow fluctuations in cerebral and neck on the basis of simultaneous graphic registration of heart rate changes in the resistance between the electrodes, superimposed on the scalp.

With rheoencephalography (REG) can judge the tone and elasticity of blood vessels of the brain and neck, blood viscosity, pulse wave velocity, blood flow velocity, to evaluate the latent periods, time of occurrence and severity of regional vascular responses.

Rheoencephalography (REG) used in the diagnosis of neck and brain vessels.

Rheoencephalography (REG) of the brain and neck, used by doctors in diagnosing the following diseases:

cerebral ischemia, stroke
vertebro-basilar insufficiency (VBI)
vegetative-vascular dystonia (VVD)
cerebral blood flow
dizziness
sonitus
intracranial pressure
headache (migraine, cephalalgia)
traumatic head and brain injury (TBI), concussion and brain contusion
injuries to the neck, cervico-cranial syndrome
encephalopathy
Parkinson's disease
pituitary adenoma

The physical basis of the method rheoencephalography (REG) is the difference between the electrical conductivity of blood and body tissues, due to fluctuations in blood flow than pulsovye caused primarily fluctuations in the conductivity of the investigated area. Since the detection of changes in the electrical pulse is possible only by passing through the tissues of the weak (2-2,5 A), high (100-200 kHz) current, a common feature for rheograph of any type is a high frequency generator.

Plate electrodes rheoencephalography (REG) coated with a thin layer of them contact paste put on the relevant parts of the scalp, previously degreased with alcohol. When the most common frontomastoidalnom abduction rheoencephalography (REG), one electrode impose on the inner edge of eyebrows, the other - on the mastoid bone.

To evaluate hemodynamics in the vertebral arteries using oktsipito-mastoidalnoe abstraction. As a functional loads using hyperventilation (1-2 min), breath holding, inhalation of carbon dioxide, various (vasodilators or vasoconstrictor), pharmacological agents, orthostatic test, and to identify the degree of development of collateral circulation are used alternately clamping of the carotid or vertebral arteries.

An increase in vascular tone on rheoencephalography (REG) increases the pulse rise time curve flattened top, disappearing additional waves. Decrease in vascular tone is characterized by shortening the distance between the Q wave on ECG and the beginning of the wave, decreasing the time of the ascending waves, pointed tops in the presence of 2-3 additional waves on the descending part of the curve.

When reoentsefalogramm dynamic studies in patients with traumatic brain injury accompanied by subarachnoid hemorrhage, ranging from 4-5-days. after the injury, is often described increase tone and decrease in pulse blood filling of cerebral vessels in the normalization of these indicators at the 20-30-th days. Keep in mind that the indicator rheoencephalography (REG) may reflect fluctuations in blood flow vascular scalp, conditional on the difficulty in interpreting the results.

If you have any questions about the conduct of rheoencephalography (REG), you can specify them with our neurosurgeon or a neurologist on the phone: (499) 487–00–38


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