The aim was to sonographically evaluate the reproductive tract of bitches during the follicular phase of the estrous cycle using High Density (HD) ultrasonic techniques. Females (n = 8) were evaluated at five different times throughout the follicular phase, as determined by vaginal cytology and blood progesterone concentrations. Ultrasonic exams were performed using the ACUSON S2000/SIEMENS device utilizing a multifrequency HD transducer (5.5–18 MHz). Videos of the ovaries were obtained and recordings were evaluated using a DICOM viewer software for counting and measuring the ovarian structures, which were assigned to groups based on diameter in mm: G1: ≤ 1; G2: from 1.01 to 3.5; G3 from 3.51 to 5.5; G4: from 5.51 to 10. There was a greater uterine thickness with the progression of the follicular phase (P < 0.05). Six distinct regions were identified in the uterine wall. The ovarian dimensions increased (P < 0.05) as stage of the follicular phase advanced. There was fluid detected around the ovaries after ovulation. There was a characteristic fat tissue hyperechogenicity around the ovaries at all timepoints. There was a difference in the number of ovarian structures of each dimension group at each time there were assessments (P < 0.05). There was a difference in diameter of the largest ovarian structure and in average value of wall thickness at all timepoints when there were evaluations (P < 0.05). The HD ultrasonography technique provides for excellent image resolution, allowing for a more precise characterization of the bitch's reproductive structures and changes occurring during the follicular phase of the estrous cycle.

High-definition ultrasonography in the evaluation of the reproductive tract of bitches during the follicular phase of the estrous cycle / Paulo Nogueira Aires, Luiz; Gasser, Beatriz; Silva, Priscila; Del Aguila Da Silva, Priscila; Vinícius Silveira, Marcus; Kretzer Carneiro, Rafael; Iwaoyamada, Diego; Cristina Padilha-Nakaghi, Luciana; Andrés Ramirez Uscategui, Ricardo; Spada, Stefano; Russo, Marco; Antônio Rossi Feliciano, Marcus. - In: ANIMAL REPRODUCTION SCIENCE. - ISSN 1873-2232. - 234:(2021), pp. 1-14. [10.1016/j.anireprosci.2021.106870]

High-definition ultrasonography in the evaluation of the reproductive tract of bitches during the follicular phase of the estrous cycle

Marco Russo
Writing – Review & Editing
;
2021

Abstract

The aim was to sonographically evaluate the reproductive tract of bitches during the follicular phase of the estrous cycle using High Density (HD) ultrasonic techniques. Females (n = 8) were evaluated at five different times throughout the follicular phase, as determined by vaginal cytology and blood progesterone concentrations. Ultrasonic exams were performed using the ACUSON S2000/SIEMENS device utilizing a multifrequency HD transducer (5.5–18 MHz). Videos of the ovaries were obtained and recordings were evaluated using a DICOM viewer software for counting and measuring the ovarian structures, which were assigned to groups based on diameter in mm: G1: ≤ 1; G2: from 1.01 to 3.5; G3 from 3.51 to 5.5; G4: from 5.51 to 10. There was a greater uterine thickness with the progression of the follicular phase (P < 0.05). Six distinct regions were identified in the uterine wall. The ovarian dimensions increased (P < 0.05) as stage of the follicular phase advanced. There was fluid detected around the ovaries after ovulation. There was a characteristic fat tissue hyperechogenicity around the ovaries at all timepoints. There was a difference in the number of ovarian structures of each dimension group at each time there were assessments (P < 0.05). There was a difference in diameter of the largest ovarian structure and in average value of wall thickness at all timepoints when there were evaluations (P < 0.05). The HD ultrasonography technique provides for excellent image resolution, allowing for a more precise characterization of the bitch's reproductive structures and changes occurring during the follicular phase of the estrous cycle.
2021
High-definition ultrasonography in the evaluation of the reproductive tract of bitches during the follicular phase of the estrous cycle / Paulo Nogueira Aires, Luiz; Gasser, Beatriz; Silva, Priscila; Del Aguila Da Silva, Priscila; Vinícius Silveira, Marcus; Kretzer Carneiro, Rafael; Iwaoyamada, Diego; Cristina Padilha-Nakaghi, Luciana; Andrés Ramirez Uscategui, Ricardo; Spada, Stefano; Russo, Marco; Antônio Rossi Feliciano, Marcus. - In: ANIMAL REPRODUCTION SCIENCE. - ISSN 1873-2232. - 234:(2021), pp. 1-14. [10.1016/j.anireprosci.2021.106870]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/885405
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