{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T05:11:29Z","timestamp":1787029889682,"version":"build-2736575974"},"reference-count":63,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,7,23]],"date-time":"2023-07-23T00:00:00Z","timestamp":1690070400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Tomography"],"abstract":"<jats:p>The objectives were (a) the study of haemodynamic parameters of blood flow within the testicular artery, (b) the assessment of differences in these parameters at different segments of the artery (i.e., sequentially, as the artery flows through different regions of the testis), and (c) the identification of potential associations with measures of testicular maturation. Eight healthy beagle-breed male dogs were monitored at fortnightly intervals from the 4th to the 40th week of life, by using clinical, seminological, and ultrasonographic (B-mode, pulsed-wave Doppler) examinations. Haemodynamic parameters were assessed at four different segments of the testicular artery: at the distal supra-testicular, the marginal testicular at the cranial pole of the testis, the marginal testicular at the caudal pole of the testis, and the intratesticular. The study period was divided into three time slots (pre-puberty, puberty, and post-puberty) depending on testicular maturation and sperm production. No clinically evident abnormalities were seen in any animal throughout the study. Semen ejaculates were first collected on the 28th week, and spermatozoa were first seen on the 30th week of life. The results of B-mode examination indicated that in all dogs, the echogenicity of the testicular parenchyma was homogeneous. The waveforms of the blood flow in the testicular artery were monophasic with systolic peaks, low diastolic flow, and low vascular resistance. Most cases of significant differences between the three age periods were noted for the comparison of the pre-pubertal to pubertal periods (n = 11); among the parameters studied, the blood volume (n = 9) showed most instances of significant differences; finally, most cases of significant differences were noted in the distal supra-testicular artery (n = 12). Correlations were mainly seen for the end diastolic velocity, the peak systolic velocity and the blood volume (each with two semen evaluation parameters). The distal supra-testicular and the marginal artery at the cranial pole of the testis are recommended as the most appropriate segments of the vessel for performing a Doppler examination in the testicular artery due to the adequate size and the clear spectral waveforms as early as the 12th week of age of the animals.<\/jats:p>","DOI":"10.3390\/tomography9040112","type":"journal-article","created":{"date-parts":[[2023,7,24]],"date-time":"2023-07-24T03:17:27Z","timestamp":1690168647000},"page":"1408-1422","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Doppler Examination of the Testicular Artery of Beagle-Breed Dogs from Birth to Puberty"],"prefix":"10.3390","volume":"9","author":[{"given":"Athina P.","family":"Venianaki","sequence":"first","affiliation":[{"name":"Clinic of Obstetrics and Reproduction, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariana S.","family":"Barbagianni","sequence":"additional","affiliation":[{"name":"Clinic of Surgery, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0214-6332","authenticated-orcid":false,"given":"George C.","family":"Fthenakis","sequence":"additional","affiliation":[{"name":"Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6528-1075","authenticated-orcid":false,"given":"Apostolos D.","family":"Galatos","sequence":"additional","affiliation":[{"name":"Clinic of Surgery, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5399-0528","authenticated-orcid":false,"given":"Pagona G.","family":"Gouletsou","sequence":"additional","affiliation":[{"name":"Clinic of Obstetrics and Reproduction, Faculty of Veterinary Science, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1136\/inp.i6054","article-title":"Ultrasonography of the prostate gland and testes in dogs","volume":"39","author":"Silva","year":"2017","journal-title":"In Pract."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1306","DOI":"10.1111\/andr.13056","article-title":"The role of scrotal ultrasonography from infancy to puberty","volume":"9","author":"Spaziani","year":"2021","journal-title":"Andrology"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Orlandi, R., Vallesi, E., Boiti, C., Polisca, A., Bargellini, P., and Troisi, A. 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