
Ventricular-brain ratio (VBR), also known as the ventricle-to-brain ratio or ventricle-brain ratio, is the ratio of total
ventricle area to total brain area,
which can be calculated with
planimetry Planimetrics is the study of plane measurements, including angles, distances, and areas.
History
To measure planimetrics a planimeter or dot planimeter is used. This rather advanced analog technology is being taken over by simple image measurement ...
from brain imagining techniques such as
CT scan
A computed tomography scan (CT scan; formerly called computed axial tomography scan or CAT scan) is a medical imaging technique used to obtain detailed internal images of the body. The personnel that perform CT scans are called radiographers ...
s.
[ (). . ]
It is a common measure of ventricular dilation or cerebral atrophy in patients with
traumatic brain injury or
hydrocephalus ''ex vacuo''.
VBR also tends to increase with age.
Generally, a higher VBR means a worse prognosis for recovering from a brain injury.
For example, VBR is significantly correlated with performance on the
Luria-Nebraska neuropsychological battery.
Studies have found people with
schizophrenia have larger
third ventricles and VBR.
Correlational studies have found relationships between ventricle-brain ratio and
binge eating
Binge eating is a pattern of disordered eating which consists of episodes of uncontrollable eating. It is a common symptom of eating disorders such as binge eating disorder and bulimia nervosa. During such binges, a person rapidly consumes an exc ...
and inversely with
plasma thyroid hormone concentration.
See also
*
Sarnoff A. Mednick
Sarnoff Andrei Mednick, (January 27, 1928 – April 10, 2015) was a psychologist who pioneered the prospective high-risk, longitudinal study to investigate the etiology (causes) of psychopathology, or mental disorders. His emphasis was on sc ...
*
Ventriculomegaly
References
Behavioral neuroscience
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