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Analysis of human ejaculation using color Doppler ultrasonography: a comparison between antegrade and retrograde ejaculation.
Urology. 2005 Feb; 65(2):365-8.U

Abstract

OBJECTIVES

To observe the phenomenon of human ejaculation dynamically using color Doppler ultrasonography.

METHODS

Human ejaculation was observed using transrectal color Doppler ultrasonography in a healthy man and a patient with retrograde ejaculation. Ejaculation was induced manually with audiovisual sexual stimulation. The ejaculatory phenomenon was analyzed and compared with that of retrograde ejaculation.

RESULTS

In the healthy man, the prostatic urethra flattened slightly and the bladder neck contracted just before expulsion. The ejaculatory stream spurted from the seminal vesicles to the bulbous urethra through the ejaculatory duct. In the patient with retrograde ejaculation, the ejaculatory stream from the seminal vesicles and inframontanal and distal prostatic urethras distended into a globular-shaped sac filled with semen. No seminal flow toward the bulbous urethra occurred. The semen remaining in the prostatic urethra began flowing slowly into the bladder.

CONCLUSIONS

Differences between antegrade and retrograde ejaculation can be clearly detected by color Doppler ultrasonography, providing a noninvasive method to diagnose ejaculatory disorders.

Authors+Show Affiliations

Department of Urology, Okayama University Graduate School of Medicine and Dentistry, Okayama, Okayama Prefecture, Japan. atsnagai@md.okayama-u.ac.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

15708054

Citation

Nagai, Atsushi, et al. "Analysis of Human Ejaculation Using Color Doppler Ultrasonography: a Comparison Between Antegrade and Retrograde Ejaculation." Urology, vol. 65, no. 2, 2005, pp. 365-8.
Nagai A, Watanabe M, Nasu Y, et al. Analysis of human ejaculation using color Doppler ultrasonography: a comparison between antegrade and retrograde ejaculation. Urology. 2005;65(2):365-8.
Nagai, A., Watanabe, M., Nasu, Y., Iguchi, H., Kusumi, N., & Kumon, H. (2005). Analysis of human ejaculation using color Doppler ultrasonography: a comparison between antegrade and retrograde ejaculation. Urology, 65(2), 365-8.
Nagai A, et al. Analysis of Human Ejaculation Using Color Doppler Ultrasonography: a Comparison Between Antegrade and Retrograde Ejaculation. Urology. 2005;65(2):365-8. PubMed PMID: 15708054.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Analysis of human ejaculation using color Doppler ultrasonography: a comparison between antegrade and retrograde ejaculation. AU - Nagai,Atsushi, AU - Watanabe,Masami, AU - Nasu,Yasutomo, AU - Iguchi,Hiroki, AU - Kusumi,Norihiro, AU - Kumon,Hiromi, PY - 2004/05/12/received PY - 2004/09/09/accepted PY - 2005/2/15/pubmed PY - 2005/10/6/medline PY - 2005/2/15/entrez SP - 365 EP - 8 JF - Urology JO - Urology VL - 65 IS - 2 N2 - OBJECTIVES: To observe the phenomenon of human ejaculation dynamically using color Doppler ultrasonography. METHODS: Human ejaculation was observed using transrectal color Doppler ultrasonography in a healthy man and a patient with retrograde ejaculation. Ejaculation was induced manually with audiovisual sexual stimulation. The ejaculatory phenomenon was analyzed and compared with that of retrograde ejaculation. RESULTS: In the healthy man, the prostatic urethra flattened slightly and the bladder neck contracted just before expulsion. The ejaculatory stream spurted from the seminal vesicles to the bulbous urethra through the ejaculatory duct. In the patient with retrograde ejaculation, the ejaculatory stream from the seminal vesicles and inframontanal and distal prostatic urethras distended into a globular-shaped sac filled with semen. No seminal flow toward the bulbous urethra occurred. The semen remaining in the prostatic urethra began flowing slowly into the bladder. CONCLUSIONS: Differences between antegrade and retrograde ejaculation can be clearly detected by color Doppler ultrasonography, providing a noninvasive method to diagnose ejaculatory disorders. SN - 1527-9995 UR - https://www.unboundmedicine.com/medline/citation/15708054/Analysis_of_human_ejaculation_using_color_Doppler_ultrasonography:_a_comparison_between_antegrade_and_retrograde_ejaculation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0090-4295(04)01082-9 DB - PRIME DP - Unbound Medicine ER -