CT anatomy of the lungs, bronchi and trachea in the Mature Guinea pig (<i>cavia porcellus</i>)

Zehtabvar, Omid; Mirmohammadkhani, Majid; Rostami, Amir; Akbarein, Hesameddin; Sereshke, None Amir Hosssein Alinezhad; khanamooeiashi, Mahdokht; Borgheie, Fakhra

doi:10.1002/vms3.1131

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…While CT imaging is not as commonly employed in small mammals like guinea pigs compared to dogs and cats, its utility extends to various clinical scenarios due to its inherent cross-sectional nature, which mitigates the superimposition of anatomical structures. Indications include evaluation of dental disease and other bony structures of the head ( Krautwald-Junghanns et al , 2011 ) or assessment of the thoracic and abdominal cavities for anatomical and medical purposes ( Parkinson et al , 2017 ; Zehtabvar et al , 2023 ). Furthermore, the injection of intravenous contrast medium enhances the vascular structures of the body and allows the evaluation of potential vascular malformations.…”

Section: Discussionmentioning

confidence: 99%

CT findings of an incidental segmental aplasia of the caudal vena cava with azygos continuation in a guinea pig (Cavia porcellus)

Costas,

Battiato,

Magro

et al. 2024

Open Vet J

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Background: Segmental aplasia of the caudal vena cava with azygos continuation is a congenital malformation macroscopically described in mammals including humans, dogs and rodents. It is usually detected as an incidental finding and the final diagnosis is reached by computed tomography, fluoroscopy or post-mortem dissection. Case Description: A 3-year-old guinea pig (Cavia porcellus) presented with subacute dyspnea. A computed tomographic exam was performed for the evaluation of subtle pulmonary changes previously suspected on conventional radiography, and a segmental aplasia of the caudal vena cava with azygos continuation was identified as an incidental finding. Conclusion: According to database negative results, this is the first report describing a segmental aplasia of the caudal vena cava and azygos continuation in a guinea pig by computed tomography.

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Section: Discussionmentioning

confidence: 99%

CT findings of an incidental segmental aplasia of the caudal vena cava with azygos continuation in a guinea pig (Cavia porcellus)

Costas,

Battiato,

Magro

et al. 2024

Open Vet J

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CT anatomy of the lungs, bronchi and trachea in the Mature Guinea pig (cavia porcellus)

Zehtabvar

Mirmohammadkhani

Rostami

et al. 2023

Veterinary Medicine & Sci

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Background: Since there is no complete study of topographic features of thorax structures in guinea pigs, this study strives to define the exact topographic features of thorax structures. Objectives:The aim of this study is to provide comprehensive topographic information about the location of the trachea, bronchi, lungs and heart inside the thoracic cavity in guinea pig, as well as to study the features of these structures, their proximity to other organs and comparative anatomical studies with CT scan images in living samples.Methods: Ten adult male and healthy guinea pigs were selected. CT scan transverse images were taken. The morphometric parameters of the lungs, bronchi, trachea, heart, thoracic cavity and abdominal cavity were measured. Results:In these studies, the position of organs such as the trachea, lungs and heart were monitored, and specified descriptions of CT scan images and anatomical observations were obtained. We realised that the heart in this animal was not inclined to the left, and due to the equal size of the lungs, the heart was almost on the midline. According to the measurements, 20.05% of the ventral cavity volume was thoracic cavity and 79.95% was abdominal cavity. Conclusions:According to studies on guinea pigs, the right and left have the volume, and the heart is located between them on the midline without a tendency to the left. It seems that one of the reasons for the reluctance of the heart to the left and its placement on the midline in the guinea pig is that the volume of the two lungs is equal. In the case of guinea pigs, both numerical parameters are smaller than rabbits' , but close to it. One of the most important factors in this study is that none of the animals were euthanised, and all of samples were alive after our study.

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Anatomical study of pericardioperitoneal canal in immature beluga (Huso huso) with ultrasonography

Zehtabvar,

Vajhi,

Masoudifard

et al. 2024

Veterinary Medicine & Sci

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BackgroundOne of the special anatomical structures in sturgeons is the pericardioperitoneal canal (PPC), which has not been studied much. Considering that the presence and absence of this channel and its morphometry have not been investigated in this type of fish, this study was conducted.ObjectiveThe purpose of present study was to obtain a complete understanding about anatomical features and ultrasonography of PPC in the heart of immature beluga species in order to provide standard approaches for performing sonography and echocardiography on this sturgeon species.MethodsTen immature belugas (Huso huso) were used to perform ultrasonography with Sonosite MicroMaxx ultrasonography machine of ventral approach between two pectoral fins. After performing the steps of ultrasonographic study, gross anatomical studies were also performed, and the morphometric measurement of the canal was also performed.ResultsA small PPC was observed, which communicated between the pericardial cavity, and the peritoneal (coelomic) cavity. The cranial part of this channel, which was located immediately after the transverse septum, was on the midline of the body and was seen in midsagittal ultrasonograms. On average, the length of this canal was 3.23 ± 0.05 cm, and its diameter (cranial part) was 0.24 ± 0.04 cm.ConclusionsIn the present study on immature beluga, it was observed that the canal is located behind the sinus venosus and is caudoventral to it, though behind the transverse septum. It has been mentioned that this PPC establishes a connection between the pericardial cavity and the peritoneal cavity, so this connection is between the peritoneal cavity and the space between the two layers of the pericardium and has no connection with the pericardial sac (the space where the heart is located). In this study, the anatomical structure and morphometry of the PPC in immature beluga were investigated, and some approaches were presented to observe the canal in ultrasonography.

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CT anatomy of the lungs, bronchi and trachea in the Mature Guinea pig (cavia porcellus)

Cited by 4 publications

References 42 publications

CT findings of an incidental segmental aplasia of the caudal vena cava with azygos continuation in a guinea pig (Cavia porcellus)

CT findings of an incidental segmental aplasia of the caudal vena cava with azygos continuation in a guinea pig (Cavia porcellus)

CT anatomy of the lungs, bronchi and trachea in the Mature Guinea pig (cavia porcellus)

Anatomical study of pericardioperitoneal canal in immature beluga (Huso huso) with ultrasonography

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