An evaluation of B-mode and color Doppler ultrasonography for detecting periovulatory events in the bitch

Bergeron, Lindsay H.; Nykamp, Stephanie; Brisson, Brigitte A.; Madan, Pavneesh; Gartley, Cathy

doi:10.1016/j.theriogenology.2012.08.016

Cited by 33 publications

(41 citation statements)

References 27 publications

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“…This change directs blood to the ovaries and increases intraovarian artery perfusion on the day after ovulation. These results are similar to those reported in previous studies examining bitches (Bicudo et al 2010, Köster et al 2001, Bergeron et al 2013, capuchin monkeys (Domingues et al 2007), mares (Bollwein et al 2002) and women (Tan et al 1996, Koster et al 2001. The increase in the ovarian vessel diameter has also been identified by laparoscopy during the periovulatory period in bitches (Silva et al 1996).…”

Section: Discussionsupporting

confidence: 91%

“…There have also been two studies evaluating the intraovarian vessels during the follicular and luteal phases in nonpregnant bitches (Köster et al 2001, Bicudo et al 2010, one comparing intraovarian vessels during diestrus in pregnant and nonpregnant bitches (Polisca et al 2013) and one report using color Doppler ultrasonography for detecting periovulatory events in ovarian artery (Bergeron 2013). There are no studies evaluating these two arteries, in the same bitch during the periovulatory period.…”

Section: Introductionmentioning

confidence: 99%

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Ovarian and uterine periovulatory Doppler ultrasonography in bitches

et al. 2013

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Pesq. Vet. Bras. 33(9):1144-1150, setembro 2013 1144 RESUMO.-[Ultrassonografia Doppler ovariana e ute-rina em cadelas.] Este trabalho teve como objetivo des-crever as características ultrassonográficas uterinas e ova-rianas, e dopplervelocimétricas das suas artérias nos dias periovulatórios em cadelas. Quinze ciclos estrais em 10 ani-mais foram avaliados. As características ultrassonográficas, índices de resistência (IR) e índices de pulsatilidade (IP) do útero e dos ovários em cada animal foram registrados 5 dias antes e depois da ovulação (D0). Os dados foram anali-sados estatisticamente e os resultados foram expressos em média ± erro padrão da média (P<0,05). Como resultados as características ultrassonográficas uterinas foram seme-lhantes em todos os ciclos e dias avaliados, tendo o corpo uterino um diâmetro médio de 0,85±0,02cm. Foi observado um aumento no volume dos ovários e nos diâmetros dos folículos, tendo os ovários um volume de 0,64±0,06cm 3 , e a cavidade dos folículos um diâmetro de 0,46±0,01cm no dia da ovulação. Após a ovulação, foi observado colapso dos folículos somente em alguns ciclos. A perfusão sanguínea uterina diminuiu dois dias antes da ovulação e permane-ceu inalterada até a ovulação. Após a ovulação, houve um aumento gradual na perfusão das artérias uterinas e ova-rianas, direcionando o fluxo de sangue para os ovários e This paper aims to describe the uterine and ovarian ultrasonographic characteristics and Doppler velocimetric features of their arteries in bitches during the periovulatory period. Fifteen estrous cycles in 10 animals were evaluated. The ultrasonographic characteristics , resistance indices (RI) and pulsatility indices (PI) of the uterus and ovaries in each animal were recorded 5 days before and after ovulation (D0). The data were statistically analyzed, and the results were expressed as the mean ± standard error of mean (P<0.05). In results the ultrasonographic features of the uterus were the same on all of the cycles and evaluated days. The uterus had an average diameter of 0.85±0.02cm. An increase in the volume of the ovaries and the diameter of the ovarian follicles were measured. Ovaries had a volume of 0.64±0.06cm 3 , and the follicles cavities had a diameter of 0.46 ± 0.01 cm on the day of ovulation. After ovulation, it was observed that some follicles not collapse in some cycles. Two days prior to ovulation, the uterine blood perfusion decreased. This decrease remained unchanged until ovulation. Following ovulation, we measured a gradual increase in the uterine perfusion and in the ovarian artery. This artery directed blood flow to the ovaries and increased the intra-ovarian perfusion on the day after ovulation. In conclusion, specific features are observed in the uterus and ovarian ultrasound image and Doppler values of their arteries presented on the periovulatory days and when associated allow to estimate more accurately the date of ovulation. Pesq. Vet. Bras. 33(9):1144-1150, setembro 2013 1145 Ovarian and uterine periovulatory Doppler ultrasonography in bit...

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Ovarian and uterine periovulatory Doppler ultrasonography in bitches

et al. 2013

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“…It has been suggested that the quantitative ultrasonogram attributes are good indicators of physiological and functional status of the follicle and corpus luteum in different species (2,3,6,8,15). Unlike those studies, computer assisted real time ultrasonography was performed on images belong to all ovarian tissues with all structures (functional and connective) in this study.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies carried out in bovine (6,12,13,15,16), equine (4,5), and ovine species (3,18) have shown that the quantitative echotextural variables are good indicators of follicular and/or luteal histomorphological changes and endocrine status. Recently, B-mode and colour Doppler ultrasonography were performed to relate ultrasonographic changes in ovarian blood flow, follicle/corpora lutea count and echotexture to periovulatory events (2). However, a computer assisted ultrasonographic image analysis approach to monitor ovarian tissue in correlation with oestrus stage and serum P4 level has not been reported yet in canine.…”

Section: Introductionmentioning

confidence: 99%

In vivo and in vitro assessment of ovarian echotexture through computer assisted real time ultrasonography in bitches

Erdoğan¹,

Küçük²

2017

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Summary:In vivo and in vitro assessment of canine ovaries (n=72) were studied by computer assisted real time ultrasonography to analyse the correlation between the ovarian echotexture and serum progesterone (P4) concentration. Pre-and postoperative ovarian images were taken via B-mode ultrasonography, and analysed by an image analysis software package for total area of ovary (A), mean greyness value (MGV), heterogeneity (H), and minimum-maximum pixel value (PR). The ovaries were classified into follicular or luteal stage based upon the serum P4 concentration, vaginal cytology findings, and macroscopic inspection of ovaries postoperatively. The P4 was negatively (P<0.05) correlated with A, H and PR, whereas, it's correlation with MGV was positive (P<0.05) in follicular stage. Also, parameters A, H and PR were higher (P<0.05) in follicular stage. In vitro parameters of MGV, H and PR were higher (P<0.05) than in vivo parameters in follicular stage. Meanwhile, in luteal stage ovaries, only in vitro MGV was higher than in vivo MGV. In this study, it was observed that the relationship between ovarian echotexture and oestrous stages could be presented numerically. Moreover, the differences between the in vivo and in vitro ovarian images were more prominent in bitches in the follicular stage.

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“…Miyamoto et al (17) also concluded that the blood flow is a key regulatory component of the corpus luteum function. However, there is a couple of studies presenting blood flow in the bitches` ovaries, most of them focused on the intraovarian vessels, and not demonstrating the perfusion of the parenchyma in a quantitative manner (3,14). The usefulness of this kind of analysis could be suspected, while there were some attempts for objective quantitative evaluation of the results obtained with the use of colour coded technique.…”

Section: Discussionmentioning

confidence: 99%

Dynamic tissue perfusion measurement in the reproductive organs of the female and male dogs

Dzięcioł

Scholbach

Stańczyk

et al. 2014

Bulletin of the Veterinary Institute in Pulawy

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The aim of this study was to investigate the usefulness of new software Pixel Flux (PXFX) for clinical evaluation of tissue perfusion in the field of reproduction in dogs. The experiment was performed on six adult Beagle dogs. Different organs and tissues of the animals were examined with the MyLab25 Gold ultrasound system. Blood flow in the ovary, testicle, prostate, the ramification of the penile artery, and the network of blood vessels of the pampiniform plexus were examined with the use of colour coded Doppler technique, and obtained data was evaluated with the PXFX software. The more objective digital evaluation of data obtained with colour Doppler sonography through the application of dynamic tissue perfusion measurements provides new opportunities for diagnosis, as well as continuous monitoring of the function of the examined tissues and organs. The use of PXFX software is strongly indicated as a tool in small animal practice as an additional method for evaluation of tissue perfusion, especially in the cases when other methods like pulsed wave Doppler techniques are difficult to be performed.

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An evaluation of B-mode and color Doppler ultrasonography for detecting periovulatory events in the bitch

Cited by 33 publications

References 27 publications

Ovarian and uterine periovulatory Doppler ultrasonography in bitches

Ovarian and uterine periovulatory Doppler ultrasonography in bitches

In vivo and in vitro assessment of ovarian echotexture through computer assisted real time ultrasonography in bitches

Dynamic tissue perfusion measurement in the reproductive organs of the female and male dogs

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