2200 RESISTIVE INDEX DOES NOT VARY WITH LOCATION IN THE TESTIS

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You have accessJournal of UrologyImaging/Radiology: Uroradiology II1 Apr 20122200 RESISTIVE INDEX DOES NOT VARY WITH LOCATION IN THE TESTIS Joel Hillelsohn, Mahyar Kashan, and Bruce Gilbert Joel HillelsohnJoel Hillelsohn Lake Success, NY More articles by this author , Mahyar KashanMahyar Kashan Lake Success, NY More articles by this author , and Bruce GilbertBruce Gilbert Lake Success, NY More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2012.02.2374AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES Elevations in Resistive Index (Ri) is a non-invasive indicator of impaired testicular microcirculation, dyspermia and hypothalamic-pituitary-gonadal axis abnormalities. However, whether measurement varies with location in the testis has not been elucidated. This study answers this question by measuring the Ri of intratesticular arteries from the upper, middle and lower testis. METHODS The spectral Doppler evaluation was performed in 31 patients (59 testes) presenting with infertility or testicular pain and palpably normal testes. Our standard protocol included spectral Doppler interrogation of a single centripetal artery or recurrent rami from the upper, middle and lower portions of each testis. A BK medical Flex focus ultrasound with an 18 mHz linear array transducer was used by a single sonographer for all measurements. The groups were compared using t tests and ANOVA tests as appropriate. RESULTS Ri measured in the upper or lower testis did not significantly differ from mid testes. An ANOVA between the three groups also showed no significant difference (Right p= 0.52, Left p= 0.72). In addition, the average RI of both testes was not significantly different (p=0.82). These results are outlined in Table #1 and #2. Table #1. Ri Parameters vs Mid Testes Ri RI Mean ± SD p value vs mid testes Right Upper Testes 0.62±0.11 0.46 Right Mid Testes 0.59±0.13 1 Right Lower Testes 0.59±0.15 0.98 Left Upper Testes 0.62±0.15 0.35 Left Mid Testes 0.59±0.13 1 Left Lower Testes 0.61±0.15 0.48 Table #2. Average Ri Right Testes vs Ri Left Testes Right Testes Left Testes p= Varicocele Mean ± SD 5.4±1.3 5.4±1.7 0.96 Testes Volume 11.6±4.7 11.0±4.8 0.62 RI Mean ± SD 0.60±0.13 0.61±0.14 0.82 CONCLUSIONS Spectral Doppler results are equal whether taken from arteries in the upper, mid or lower testis. Ri does not vary with location in the testis. A single Ri measured anywhere in the testis is a valid indicator of testicular microcirculation. © 2012 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 187Issue 4SApril 2012Page: e887 Advertisement Copyright & Permissions© 2012 by American Urological Association Education and Research, Inc.MetricsAuthor Information Joel Hillelsohn Lake Success, NY More articles by this author Mahyar Kashan Lake Success, NY More articles by this author Bruce Gilbert Lake Success, NY More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...