This hypothesis is tested by measuring interval distances between relevant brain structures and fixed anatomically based planes of reference both at the tentorial hiatus and at the foramen magnum in both normal and IH patient populations.
Definition of Planes of Reference and Description of Distances Measured
Anatomical planes of reference were subsequently established.
While we were careful to address this through vetting of cases and our method of establishing anatomical planes of references for each scan, we did not control for variation in the femoral adduction/abduction angle or the degree of hip internal/external rotation beyond visually observing that the lower limbs were in a normal anatomical alignment.
It consists of synopses, fill-in study outlines, and self-tests related to anatomy and physiology aspects such as locator terms, planes of reference
, and anatomical positions; the basics of cells and tissues; and anatomy in terms of the functional categories of respiration, phonation, articulation, and the nervous and auditory systems.
The approach that was selected used an alignment fixture that, when installed on the sleeve, provides the planes of reference and a means for precisely aligning the waste transfer equipment.
This fixture (Figure 4) provides the planes of reference and a means for aligning the waste transfer machine with respect to the sleeve or the unsleeved borehole.