The IJV was visualized by placing the ultrasound transducer perpendicular to the skin in the transverse plane on the patient's neck at the level of the cricoid cartilage in order to avoid interference from the probe-to-vein angle.
Moreover, in order to avoid interference of probe-to-vein angle, the JV evaluation was performed by positioning the probe perpendicular to the skin and oriented orthogonally to the JV short-axis diameter.
d Reduction of venous enlargement and decrease of downward displacement of midbrain, increase of angle between vein of Galen and straight sinus.
Results indicated that the conditions under which it was easiest to stop the needle inside the vein were an insertion angle range of 10 20 and an insertion velocity of 3 mm/s.
The primary vein is making an angle ν at this branching point.
The fact that the perimeter was folded back on the same curve means, for two consecutive lobes, that the longest is the one whose vein makes the biggest angle with the separating anti-vein fold (figure 11A).
However, the very fine hair-like microstructures, which are oblique to the vein wall at low angles, can be clearly observed at high magnifications in sample CV-2 (Figure 2g).
Coming off the vena cava at a right angle was the renal vein.
Fundus biomicroscopy revealed in the right macula, slightly dilated right-angle veins with RPE hyperplasia beneath them.
The literature unfortunately does not yet provide any quantitative data concerning the frequency or type of anatomical variations of the superior petrosal vein during surgery for cerebellopontine angle meningiomas.
Gently insert a syringe (5cc, 10cc, 20cc depending on the amount of blood required) with a gauge 21 needle into the bulging jugular vein at a 35 ° angle, directed to the horse's head.
