INDIRECT X-RAY CINEMATOGRAPHIC STUDIES ON EJACULATORY MOVEMENT IN HUMAN SEMINAL VESICLE AND SPERMATIC DUCT

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Abstract
The studies on the movement of the seminal vesicle and spermatic duct using experimental animals have been reported by many investigators. Pre and post ejaculatory rentgenograms, examinations of the removed seminal vesicles and spermatic ducts, and quantitative studies of the divided seminal contents have been also played the parts of the studies, but there have been a few reports concerning the ejaculatory movement of the human seminal vesicle. I using an image intensifier, have been radiating a harmless little dosis of X-ray to the human seminal vesicle and observing the poured contrast media passing into the human seminal vesicle from spermatic duct and the movement of the seminal vesicle and spermatic duct in the exciting stage, ejaculatory stage and post-ejaculatory stage by X-ray cinematogram. I have succeeded to take a 16mm cinemato graph and acquired new findings as follows: 1) Passing of the poured contrast media. The contrast media poured into the spermatic duct may flow in the seminal vesicle through the ampullar portion of the spermatic duct, and then fill the body and vertex of the seminal vesicle gradually. The contrast media filling enough in the seminal vesicle, then may flow in the posterior urethra namely: Graf's phenomen may reveal positive in all cases. 2) Movement in excitement. Being excited sexually by masturbation, the seminal vesicle may be placed horizontally on account of raising of the beginning of the ejaculatory duct. The spermatic duct and ampullar portion may disappear its normal serpentine feature and appear extremely tense. 3) Movement in the beginning of ejaculation. Horizontal seminal vesicle may return again to original position by means of descent of the beginning portion of the ejaculatory duct. After a while the feature of the spermatic duct and ampullar portion may disappear, while the seminal vesicle may move up and down for 2 or 3 times, then the first ejaculation may be begun. 4) Movement in ejaculation. Ejaculatory movement may be summarized as follows; the first is an equal wall-contraction of the seminal vesicle its self, the second is a pendulous peristaltic movement which may occur from vertex of the seminal vesicle to the beginning of the ejaculatory duct, and the third is an up and down movement which may occur only once on the ejaculation. 5) Post-ejaculatory movement. When the ejaculation may come to an end, the seminal vesicle may be relaxed, so the contrast media may be stayed in the seminal vesicle and dilate it. While the feature of the spermatic ampulla may be reappeared. It may be caused by back-flowing of the contrast media which stayed in the beginning of the ejaculatory duct. After then there may not be more movement of the seminal vesicle and spermatic duct visible.

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