The workings of the brain and spinal cord have only recently become clear thanks to the development of new imaging techniques.
After development of diffusion tensor tractography (DTT), which is derived from diffusion tensor imaging (DTI), three-dimensional reconstruction and estimation for three motor tracts, such as the corticospinal tract, the rubrospinal tract, and the corticoreticular pathway became possible.
The corticospinal tract is known to be a major neural tract for motor function in the human brain. Several studies have reported on injury of the corticospinal tract by transtentorial herniation. In addition, some studies have demonstrated recovery of a corticospinal tract injured by transtentorial herniation. However, very little is known about injury and recovery of the corticospinal tract related to subfalcine herniation. Researchers at College of Medicine, Yeungnam University, Republic of Korea, led by Prof. Sung Ho Jang report on a 53-year-old, male patient with subdural hematoma in the right fronto-parietal-temporal lobe and subfalcine herniation patient who showed recovery of the corticospinal tract, which was injured by the effect of a subfalcine herniation, using DTT.