The Research of the Clinical Medicine and the Conservation of Fish in Public Aquariums

Ito, Takaomi

doi:10.5686/jjzwm.17.113

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…2001, 2002). In clinical practice for elasmobranchs, ultrasonography and radiography are conventionally used to diagnose these diseases (Ito 2012; Culpepper and Mylniczenko 2017; Mylniczenko et al. 2017).…”

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The Establishment of an Optimal Protocol for Contrast‐Enhanced Micro‐Computed Tomography in the Cloudy Catshark Scyliorhinus torazame

2021

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The purpose of this study was to determine the optimal imaging protocol for contrast‐enhanced computed tomography (CECT) using micro‐CT (μ‐CT) for the posterior cardinal vein (PCV), dorsal aorta (DA), hepatic portal vein (HPV), kidney, liver, cephalic arteries (CAs), and gills of Cloudy Catsharks Scyliorhinus torazame. Additionally, we examined the availability of CECT screening for the coelomic organs. Different doses of iopamidol (100, 300, 500, and 700 mg iodine [mgI]/kg) were administered intravenously for 20 s in six sharks. The CT scans from the pectoral girdle to the pelvic girdle were performed at 0–600 s after administration. Contrast‐enhanced CT imaging of the CAs, gills, and coelomic organs was examined. Assessment of the signal enhancement value revealed that the PCV was easily visualized with all contrast doses at 25 s. The CAs, gills, and DA were visible at a slightly higher dose (CAs and gills: 200 mgI/kg at 40 s; DA: 300 mgI/kg at 50 s). The HPV was obvious at a dose of at least 500 mgI/kg after a 150‐s delay. The parenchyma of the kidney had a contrast effect at 300 mgI/kg, 150 s after the contrast effect of the renal portal system disappeared. The liver, which stores a lot of lipids, had poor overall contrast enhancement that was optimized at the highest dose of 700 mgI/kg. Contrast‐enhanced CT screening at 700 mgI/kg and 150 s is likely to obtain the optimal imaging of the reproductive organs, such as the ovary, oviducal gland, uterus, and testis. The present findings can be applied not only to clinical practice but also to academic research and education on elasmobranchs in aquariums.

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The Establishment of an Optimal Protocol for Contrast‐Enhanced Micro‐Computed Tomography in the Cloudy Catshark Scyliorhinus torazame

2021

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“…To achieve these goals, facilities that keep Selachimorpha must perform veterinary practices to maintain the health and welfare of these animals. Diagnostic imaging such as radiography and ultrasonography are used as needed (Culpepper & Mylniczenko, 2017; Ito, 2012; Mylniczenko et al, 2017), and recently, some facilities have applied advanced diagnostic imaging with computed tomography (CT) and magnetic resonance imaging (MRI) (Erlacher‐Reid et al, 2016; Mylniczenko et al, 2017). CT scans are used to diagnose bones, the vascular system, and internal organs by generating cross‐sectional and three‐dimensional images using X‐rays taken from many angles.…”

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Contrast‐enhanced computed tomography and cross‐sectional anatomy of the trunk in the brownbanded bamboo shark (Chiloscyllium punctatum)

Ito

Tanaka

Kiyatake

et al. 2023

Anat Histol Embryol

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The wild elasmobranch population has decreased significantly because of accidental and intentional catch in the fishery industry and the disappearance and devastation of habitats due to marine development (Fowler et al., 2002). More than 80 species of elasmobranch, such as family Sphyrnidae, Lamnidae, and Myliobatidae, are listed in Appendices I-III of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2021) because of their degree of extinction and are subject to the international trade regulations. Hence, animal

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The Research of the Clinical Medicine and the Conservation of Fish in Public Aquariums

Cited by 2 publications

References 9 publications

The Establishment of an Optimal Protocol for Contrast‐Enhanced Micro‐Computed Tomography in the Cloudy Catshark Scyliorhinus torazame

The Establishment of an Optimal Protocol for Contrast‐Enhanced Micro‐Computed Tomography in the Cloudy Catshark Scyliorhinus torazame

Contrast‐enhanced computed tomography and cross‐sectional anatomy of the trunk in the brownbanded bamboo shark (Chiloscyllium punctatum)

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