Assessment of the intratesticular resistive index by colour Doppler ultrasonography measurements as a predictor of spermatogenesis

BJU International
Germar-Michael PinggeraFerdinand Frauscher

Abstract

To investigate the value of the resistive index (RI) of intratesticular arteries, and to establish diagnostic criteria for normal and pathological sperm counts on the basis of quantitative colour Doppler ultrasonography (CDUS), as the assessment of the testicular RI is widely used to measure intratesticular blood flow. In all, 160 men (aged 22-43 years, 320 testicles) were prospectively investigated; 80 had a normal and 80 a pathological sperm count, the latter having mild oligoasthenozoospermia. The RI was measured using a high-frequency Doppler ultrasound probe (14 MHz), three times on each testicle at an intratesticular artery in the upper, middle and lower testicular pole. The testicular volume was also measured by US. The RI values were compared between patients with normal and pathological sperm counts, and were compared statistically with testicular volumes. In addition, blood samples were obtained for DNA extraction, chromosome analysis and hormonal evaluations. Patients with normal sperm counts had a mean (sd) RI of 0.54 (0.05) and a mean testicular volume of 18.7 (5.2) mL, the respective values in those with pathological sperm counts were 0.68 (0.06) and 16.8 (6.0) mL, with a significantly greater RI in the latter (P ...Continue Reading

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Nov 26, 2009·Hernia : the Journal of Hernias and Abdominal Wall Surgery·I SuculluM Ozyurt
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