. The American journal of roentgenology, radium therapy and nuclear medicine . ■ catheterism. For the past four years one of us meters into the vas deferens. In thisway many differences in caliber have beendiscovered and several cases of markedstricture of the ejaculatory ducts have beenmade out. In these cases systematic dilatations,dilated at weekly or bi-weekly intervals,have sometimes brought about almost im-mediate relief of chronic pain and discom-fort in that region. In another paper adescription of these cases, the methods. Fig. 3. Proxe with Tlbe axd ComprkssioxAttachment in P
. The American journal of roentgenology, radium therapy and nuclear medicine . ■ catheterism. For the past four years one of us meters into the vas deferens. In thisway many differences in caliber have beendiscovered and several cases of markedstricture of the ejaculatory ducts have beenmade out. In these cases systematic dilatations,dilated at weekly or bi-weekly intervals,have sometimes brought about almost im-mediate relief of chronic pain and discom-fort in that region. In another paper adescription of these cases, the methods. Fig. 3. Proxe with Tlbe axd ComprkssioxAttachment in Position. (Young) has been endeavoring by meansof specially devised probes, filiforms,bougies of metal and whalebone, and withGeraghtys utricle syringe (Fig. i) toexplore and treat the interior of the ejacu-latory ducts, the vasa cleferentia and sem-inal vesicles, and in these experiments it hasbeen found that the ejaculatory ducts areeasy to locate in most cases even when notvisible. A special probe will usually passupward for a distance of two or four centi- Fiu. 4. SiiiE \iE\v 01- Tacle IX Upright Position. employed and the results obtained will begiven in detail. In the course of this workwe have been struck with the need of amethod by which the condition of the canal-system above the verumontanum can begraphically depicted without resorting toopening the vas deferens in the groin as hasbeen done by Belfield, Thomas and Pan-coast, Mills and others. With the introduction of thorium inmaking roentgenograms, it occurred to
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