Spatial variations between certain cranial and cerebral structures and the anterior and posterior commissures of the living human
✍ Scribed by Bauserman, Steven ;Meyers, Russell ;Fry, William J.
- Publisher
- John Wiley and Sons
- Year
- 1963
- Tongue
- English
- Weight
- 460 KB
- Volume
- 146
- Category
- Article
- ISSN
- 0003-276X
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✦ Synopsis
Abstract
Recorded are the quantitated empirical findings and statistical variations of spatial configurations prevalent among certain cranial and cerebral structures related to the intercommissural line as encountered in 50 stereotactically‐performed, radio‐opaque lateral ventriculograms of the living human. A physicomathematical technique of mensuration was devised to overcome the difficulties that regularly arise when fixed postmortem specimens are employed to study the same relationships. Clearly, the reliability of human stereotactic atlases is a function of the technique of mensuration employed.
Mean length of the intercommissural line was 24.50, and Range 20.90 to 30.90 mm. Mean distance from inferiormost aspect of sella turcica to posteriormost aspect of anterior commissure was 28.30, Range 23.80 to 36.60 mm. Mean length of line from “center” of external auditory meatus to anteriormost aspect of posterior commissure was 43.36, Range from 35.2 to 49.3 mm. Mean angle formed by “line” of orbital roof and intercommissural line was 19.78° and Range, 8.50° to 29.50°. Mean angle between Reid's base line and intercommissural line was +0.04°, Range, from −9.90° to +10.20°. Mean angle between line from “center” of external auditory meatus to anteriormost aspect of posterior commissure and Reid's base line was 97.93°, Range 85.40° to 120.45°.
The least variable relationships of the six studied were the distances (a) from the external auditory meatus to the posterior commissure and (b) from the floor of the sella turcica to the anterior commissure.