Doppler velocimetric parameters of the testicular artery in healthy dogs

Souza, Mírley Barbosa de; Barbosa, Cláudia; Pereira, Bárbara Sucupira; Monteiro, Cynthia Levi Baratta; Pinto, José Nicodemos; Linhares, Jussiara Candeira Spíndola; Silva, Lúcia Daniel Machado da

doi:10.1016/j.rvsc.2014.03.008

Cited by 31 publications

(66 citation statements)

References 16 publications

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“…The use of color Doppler enabled the identification of the testicular artery located in the spermatic cord, marginal to the testicle and in the intratesticular region, as previously reported in dogs (Gumbsch et al 2002, Carrillo et al 2011, Souza et al 2014. All evaluations were able to assess the blood flow in the 3 studied segments, in contrast to the observations of Gumbsch et al (2002), who reported that the intratesticular artery evaluation could not be performed in 41.5% of cases.…”

Section: Discussionmentioning

confidence: 82%

“…Scans using B mode color Doppler ultrasound were initially performed to visualize the testicular artery in the region of the spermatic cord, and the procedure was repeated to visualize the testicular artery in the marginal and intratesticular regions of the right and left testes for the Doppler velocimetry evaluation of the testicular artery (Souza et al 2014).…”

Section: Doppler Ultrasoundmentioning

confidence: 99%

“…Two-dimensional ultrasound of the testes enables the assessment of echogenicity and echotexture, besides the measure of testicular volume, which may represent normal development of testes, serving as a tool in detecting testicular diseases (Dogra et al 2003). Triplex Doppler Ultrasound involves the simultaneous use of two-dimensional ultrasound, color Doppler and pulsed Doppler, which allows the gathering of anatomical data of the vessels and functional data regarding blood flow, including its presence or absence, direction and speed, and is the method of choice for assessing the vascularity of various organs, including the testes (Nyland & Matton 2004, Pozor & McDonnell 2004, Wood et al 2010, Souza et al 2014.…”

Section: Introductionmentioning

confidence: 99%

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Triplex Doppler evaluation of the testes in dogs of different sizes

et al. 2014

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RESUMO.-[Avaliação Triplex Doppler dos testículos de cães de tamanhos diferentes.]Este trabalho teve como objetivo verificar se existem diferenças nos parâmetros dopplervelocimétricos entre cães de diferentes portes. Para tanto, foram utilizados 20 cães, sendo 10 cães de pequeno porte e 10 cães de grande porte. Foram avaliados pelo Triplex Doppler para localização da artéria testicular nos segmentos de cordão espermático, marginal ao testículo e intratesticular. Após isso, o Doppler espectral foi acionado para cálculo dos parâmetros de velocidade de pico sistólico (VPS), velocidade diastólica final (VDF) e índices de resistência (IR) e pulsatilidade (IP). O volume testicular médio do testículo esquerdo foi significativamente maior que o direito em ambos os grupos. Ao Doppler, foram observadas diferenças dos valores entre os portes, sendo as velocidades no cordão espermático superiores nos animais de grande porte (P < 0,05) e dentro dos grupos também foram observadas diferenças entre as regiões da artéria testicular. Diante do exposto, conclui-se que existem diferenças nos parâmetros dopplervelocimétricos quando comparados animais de diferentes portes, além disso, os parâmetros dopplervelocimétricos são diferentes dependendo da região em que são mensurados. INTRODUCTIONThe ultrasonographic evaluation of the testes allows the study of anatomy, parenchyma and adjacent structures, which is important to detect anatomical abnormalities, as well as guiding interventional procedures for diagnosis purposes (Nyland & Matton 2004). Two-dimensional ultrasound of the testes enables the assessment of echogenicity and echotexture, besides the measure of testicular volume, which may represent normal development of testes, serving as a tool in detecting testicular diseases (Dogra et al. 2003). This study aimed to assess whether there are differences in Doppler velocimetry parameters between different sizes. Twenty dogs were equally divided into small and large groups used in this study. The dogs were evaluated using Triplex ultrasound. Testicular artery was located by Colour Doppler in the spermatic cord, marginal to the testes and intratesticular segments and then, spectral Doppler were used to calculate: peak systolic velocity (PSV), end diastolic velocity (EDV), resistance index (RI) and pulsatility index (PI). The mean testicular volume in the left side was significantly higher than the right side, in both groups. Doppler examination showed higher velocities (EDV) at spermatic cord in large dogs; marginal to the testes was observed higher velocities in small dogs; intratesticular region no differences were observed (P < 0.05) and within the groups differences between segments of the artery were also observed for each parameter. The results showed that there are differences in Doppler velocimetry parameters between different sizes.

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Section: Discussionmentioning

confidence: 82%

Section: Doppler Ultrasoundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Triplex Doppler evaluation of the testes in dogs of different sizes

et al. 2014

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“…Doppler ultrasound method allows to study the anatomical features of the vessels and their functional characteristics related to vessel blood flow and functional data for blood flow (presence or absence, direction and flow velocity) (De Souza et al. ). In medicine, testicular Doppler is routinely used to determine the blood flow of the testicular artery, the diagnosis of testicular diseases and the study of spermatogenesis (Pinggera et al.…”

Section: Introductionmentioning

confidence: 99%

Doppler and Contrast‐Enhanced Ultrasonography of Testicles in Adult Domestic Felines

Brito

Feliciano

Coutinho

et al. 2015

Reprod Domestic Animals

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The objective was to characterize the vascular patterns of testicular blood flow of adult cats, measuring the systolic velocity (SV), diastolic velocity (DV), resistance index (RI), gate time (wash-in) peak enhancement and output time (wash-out) of the contrast and addition of tissue fill characteristics. Forty-five adult cats were selected, and the echotexture, echogenicity, size, contours and margins of testicles were assessed via ultrasound. By Doppler were evaluated the blood flow and determined of vascular index in testicular artery (SV, DV and RI) and via contrast-enhanced ultrasonography determine the time for phases: wash-in, wash-out and peak enhancement. Sonographic findings presented normal. Testicular artery was observed in the spermatic cord with tortuous patter and showed monophasic-patterned waves and low vascular resistance and with systolic peak evident. Values of indices vascular were as follows: SV = 6.73 cm/s, DV = 2.8 cm/s and RI = 0.54 for left testicles; and SV = 6.23 cm/s, DV = 2.77 cm/s and RI = 0.53 for right testicles. Contrast filled the subcapsular vascular structures and after a few seconds, a homogeneous moderate enhancement of the parenchyma, with parenchymal vessels still distinguishable and after the peak phase, a rapid homogeneous decrease in echogenicity. Values of time for contrast-enhanced ultrasonography were as follows: wash-in = 8.78 s, peak enhancement = 21.62 s and wash-out = 75.36 for left testicles; and wash-in = 10.76 s, peak enhancement = 21.50 s and wash-out = 81.81 for right testicles. Doppler and contrast-enhanced ultrasonography of the testicles in healthy adult cats was easily implemented and may provide baseline data for this organ to allow the use of these techniques as a diagnostic tool for evaluating testicular abnormalities in sick cats.

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“…and tissues in different species such as cat (Carvalho, 2009;Reis et al, 2014), chicken (Barua et al, 2007), dog (Lamb et al, 1999;Lee et al 2014;Souza et al, 2014), rabbit (Abdallah et al, 2010), crab-eating foxes and more recently, in ducks (Ferreira et al, 2015). Assumptions about a tissue's metabolism can be made from its blood supply's Vmax, Vmin, RI and PI parameters (Carvalho and Chammas, 2011).…”

Section: Investigations Of Bvps Have Been Made In Many Organsmentioning

confidence: 99%

Doppler ultrasonography of the <i>pectinis oculi</i> artery in harpy eagles (<i>Harpia harpyja</i>)

Moraes¹,

Ferreira²,

Somma³

et al. 2017

Open Vet J.

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Twenty harpy eagles (Harpia harpyja) without systemic or ocular diseases were examined to measure blood velocity parameters of the pectinis oculi artery using Doppler ultrasonography. Pectinate artery resistive index (RI) and pulsatility index (PI) were investigated using ocular Doppler ultrasonography. The mean RI and PI values across all eyes were 0.44±0.10 and 0.62±0.20 respectively. Low RI and PI values found in the harpy eagle´s pectinis oculi artery compared with the American pekin ducks one and other tissue suggest indeed a high metabolic activity in pecten oculi and corroborates the hypothesis of a nutritional function and/or intraocular pressure regulation.

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Doppler velocimetric parameters of the testicular artery in healthy dogs

Cited by 31 publications

References 16 publications

Triplex Doppler evaluation of the testes in dogs of different sizes

Triplex Doppler evaluation of the testes in dogs of different sizes

Doppler and Contrast‐Enhanced Ultrasonography of Testicles in Adult Domestic Felines

Doppler ultrasonography of the <i>pectinis oculi</i> artery in harpy eagles (<i>Harpia harpyja</i>)

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