Koiso K, Nemoto R, Ohtani M
Department of Urology, Institute of Clinical Medicine, University of Tsukuba, Japan.
J Urol. 1991 May;145(5):1071-7. doi: 10.1016/s0022-5347(17)38537-3.
The sonic detection and recording systems of urethral sounds generated during micturition were developed. This procedure was tentatively postulated as "urophonography" and its recording diagram as a "urophonogram". Classification of urophonograms was done on the basis of analyzing normal healthy male volunteers and patients with benign prostatic hyperplasia. Four types of urophonograms were demonstrated according to the shape and characteristics. Types 1, 2, 3 and 4 were characterized by a diamond shape, irregular occurrences of sound spikes, the mixture of Types 1 and 2 and no remarkable sound spikes respectively. Types 1, 2, and 3 were found in BPH, while Type 4 was demonstrated in normal healthy male volunteers. After prostatectomy a high percentage of Type 4 was demonstrated. The frequency (Hz) of these sounds was around 650. Diamond shape sound showed higher value of power gain (dB) than irregular type sound. The wave length was around 0.50 (m). Comparison of urophonographic studies with conventional uroflowmetric investigation was undertaken. Urophonography was useful for investigations of dysfunctional voiding and lower urinary tract obstruction.
开发了用于检测和记录排尿期间产生的尿道声音的系统。该过程被初步假定为“尿道声音描记法”，其记录图表为“尿道声音图”。基于对正常健康男性志愿者和良性前列腺增生患者的分析，对尿道声音图进行了分类。根据形状和特征展示了四种类型的尿道声音图。1型、2型、3型和4型分别以菱形、声音尖峰不规则出现、1型和2型混合以及无明显声音尖峰为特征。1型、2型和3型见于良性前列腺增生患者，而4型见于正常健康男性志愿者。前列腺切除术后，4型出现的比例很高。这些声音的频率（赫兹）约为650。菱形声音的功率增益（分贝）值高于不规则型声音。波长约为0.50（米）。对尿道声音描记法研究与传统尿流率测定进行了比较。尿道声音描记法有助于排尿功能障碍和下尿路梗阻的研究。
