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Sánchez Collado, Cayetano

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Sánchez Collado, Cayetano
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Anatomía y Anatomía Patológica Comparadas
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Subject: Feline ×

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    Anatomical and three-dimensional study of the female feline abdominal and pelvic vascular system using dissections, computed tomography angiography and magnetic resonance angiography
    (MDPI, 2023-12-14) Rojo Ríos, Daniel; Soler Laguía, Marta; Kilroy, David; Sánchez Collado, Cayetano; García García, María I.; Arencibia Espinosa, Alberto; Ayala Florenciano, María Dolores; Gil Cano, Francisco; Martínez Gomariz, Francisco; Ramírez Zarzosa, Gregorio José; Sánchez Collado, Cayetano; Anatomía y Anatomía Patológica Comparadas; Facultad de Veterinaria
    This study describes the anatomical characteristics of the abdominal and pelvic vascular system of two healthy mature female cats via three-dimensional contrast-enhanced computed tomography angiography, non-contrast enhanced magnetic resonance angiography and three-dimensional printing. Volume-rendering computed tomography angiography images were acquired from the ventral aspect using RadiAnt, Amira and OsiriX MD Dicom three-dimensional formats, and three-dimensional printing was obtained and compared with the corresponding computed tomography angiography images. Non-contrast enhanced magnetic resonance angiography was made us ing the time-of-flight imaging in ventral, oblique and lateral views. In addition, three cadavers with colored latex injection were dissected to facilitate the identification of the vascular structures. Three-dimensional computed tomography angiography showed the main vascular structures, whereas with the time-of-flight blood appeared with a high signal intensity compared with associated abdominal and pelvic tissues. Three-dimensional computed tomography angiography images and time-of-flight sequences provided adequate anatomical details of the main arteries and veins that could be used for future feline anatomical and clinical vascular studies of the abdomen and pelvis
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    The bony nasal cavity and paranasal sinuses of big felids and domestic cat: a study using anatomical techniques, computed tomographic images reconstructed in maximum-intensity projection, volume rendering and 3D printing models
    (MDPI, 2024-09-07) Díaz Martínez, Elena; Arencibia Espinosa, Alberto; Soler Laguía, Marta; Ayala Florenciano, María Dolores; Kilroy, David; García García, María I.; Martínez Gomariz, Francisco; Sánchez Collado, Cayetano; Gil Cano, Francisco; Raduán Jaber, José; Ramírez Zarzosa, Gregorio José; Anatomía y Anatomía Patológica Comparada; Facultad de Veterinaria
    This study aims to develop three-dimensional printing models of the bony nasal cavity and paranasal sinuses of big and domestic cats using reconstructed computed tomographic images. This work included an exhaustive study of the osseous nasal anatomy of the domestic cat carried out through dissections, bone trepanations and sectional anatomy. With the use of OsiriX viewer, the DICOM images were postprocessed to obtaining maximum-intensity projection and volume-rendering reconstructions, which allowed for the visualization of the nasal cavity structures and the paranasal sinuses, providing an improvement in the future anatomical studies and diagnosis of pathologies. DICOM images were also processed with AMIRA software to obtain three-dimensional images using semiautomatic segmentation application. These images were then exported using 3D Slicer software for three-dimensional printing. Molds were printed with the Stratasys 3D printer. In human medicine, three-dimensional printing is already of great importance in the clinical field; however, it has not yet been implemented in veterinary medicine and is a technique that will, in the future, in addition to facilitating the anatomical study and diagnosis of diseases, allow for the development of implants that will improve the treatment of pathologies and the survival of big felids.
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    Open Access
    An anatomical study using computed tomography, magnetic resonance imaging, and rhinoscopy of the nasal cavity of domestic cat (Felis silvestris catus L.) and big cats: lion (Panthera leo leo L.), leopard (Panthera pardus kotiya L.), and cheetah (Acinonyx jubatus jubatus S.)
    (MDPI, 2024-04-13) Díaz Martínez, Elena; Arencibia Espinosa, Alberto; Kilroy, David; Soler Laguía, Marta; Kilroy, David; Martínez Gomariz, Francisco; Casas García, Diego Luis; Sánchez Collado, Cayetano; Gil Cano, Francisco; Raduán Jaber, José; Ramírez Zarzosa, Gregorio José; Anatomía Humana y Psicobiología; Facultad de Veterinaria
    The objective of this work was to study the normal anatomy of the nasal cavity of the three species of big cats (leopard, lion, and cheetah) compared to the domestic cat through the use of computed tomography, magnetic resonance imaging, and rhinoscopy. Computed tomography allowed us to clearly visualize the entire bony and cartilaginous framework that supports the nasal cavity. Magnetic resonance imaging permitted better visualization of the soft tissues of this cavity. On the other hand, rhinoscopy enabled the direct visualization of the mucosa of the vestibule and nasal cavity, which is very useful in the diagnosis of masses or foreign bodies. Furthermore, with this technique, it has been possible to observe several small orifices from the nasolacrimal duct, the pharyngeal auditory tube, and the lateral nasal gland. Computed tomography, magnetic resonance imaging, and rhinoscopy are useful tools in analysis of the anatomical characteristics of the nasal cavity in these species.
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