Brain folding shapes the branching pattern of the middle cerebral artery
Fig 6
The relative volume of the Sylvian fissure contracts over time.
(A) shows that the volume of the fissure (expressed as a proportion of the total intracranial volume) diminishes over time. A three-dimensional reconstruction and a coronal cut of the averaged MR images from the Gholipour atlas at weeks 24, 33 and 38 are depicted. The fissure volume is painted in light blue. (B) represents the absolute distance between the frontal and temporal lobes over time. The growth of these two lobes over the insula produces a graph in which the fronto-temporal distance diminishes over time, consistent with the relative volume contraction. These two lobes grow into each other and come in close contact only at the very end of gestation.