岡 薫¹, 関根 英明¹, 竹原 靖明², 本多 博樹³, 高見沢 欣也³, 飯沼 一浩³

Kaoru OKA¹, Hideaki SEKINE¹, Yasuaki TAKEHARA², Hiroki HONDA³, Kinya TAKAMIZAWA³, Kazuhiro IINUMA³

¹関東中央病院泌尿器科, ²関東中央病院画像診断科, ³東芝総合研究所

¹Department of Urology, Kanto Central Hospital, ²Department of diagnostic imaging, Kanto Central Hospital, ³Toshiba Research and Development Center

キーワード : voiding echography, intracorporal linear scanning, prostatic diseases, bladder neck contracture, urodynamics

　A handy typed intracorporal electronic linear scanning probe with a frequency of 3.5 MHz, which was developed by us has been applied transrectally to 381 cases including lower urinary tract obstruction with benign prostatic hyperplasia, bladder neck contracture and others to establish their urodynamic diagnosis.
　This method offered us real time longitudinal ultrasonotomogram with high grade gray scale display, which allowed us to examine the precise and overall relationship between the prostate and its adjacent organs.
　Furthermore, the voiding echogram obtained during urination with this method made it possible to observe urodynamic changes of the bladder neck and prostatic urethra.
Thus, the voiding echography was found to be useful for observation of the posterior urethra, providing more orecise differential diagnosis of lower urinary tract obstruction.