This axial (cross sectional) CT image of the brain shows low density (dark) extensively involving both frontal lobes. Frontal lobotomies used to be performed to intentionally damage the regions involved in emotion in an attempt to cure or improve individuals with severe aggression or other affective disorders. This was performed by drilling burr holes into the frontal calvarium (skull). After the burr holes were placed cutting needles were placed into the frontal lobe parenchyma and rocked back and forth to severe the axonal connection of the frontal brain parenchym.
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