Relation between cranial venous return and hand preference by magnetic resonance angiography

Area of Science:

• Neuroscience
• Anatomy

Background:

• Hand preference is a complex trait.
• Cranial venous return plays a role in cerebral blood flow.
• Understanding the relationship between handedness and venous drainage is crucial for neurological research.

Purpose of the Study:

• To investigate the association between hand preference and the dominant site of cranial venous return.
• To determine if handedness influences the direction of venous drainage in the brain.

Main Methods:

• Magnetic resonance angiography (MRA) was employed to visualize and determine cranial venous return.
• The study included 47 right-handed and 45 left-handed subjects.
• Superior jugular bulb calibration was used to identify venous return as right (R), left (L), or right-left (R-L).

Main Results:

• Statistically significant differences were observed in venous return sites based on hand preference.
• Left-handed subjects showed a predominantly right-sided venous return.
• Right-handed subjects demonstrated a predominantly left-sided venous return.

Conclusions:

• Hand preference is linked to the laterality of cranial venous return.
• Venous return is predominantly left-sided in right-handed individuals and right-sided in left-handed individuals.
• Further research is needed to explore correlations with age, sex, and ambidexterity.