Sánchez Collado, Cayetano

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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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Open Access
Creation of three-dimensional anatomical vascular and biliary models for the study of the feline liver (Felis silvestris catus L.): a comparative CT, volume rendering (Vr), cast and 3D printing study
(MDPI, 2023-05-09) Rojo Ríos, Daniel; Ramírez Zarzosa, Gregorio José; Soler Laguía, Marta; Kilroy, David; Martínez Gomariz, Francisco; Sánchez Collado, Cayetano; Gil Cano, Francisco; García García, María I.; Raduán Jáber, José; Arencibia Espinosa, Alberto; Anatomía y Anatomía Patológica Comparada; Facultad de Veterinaria
In this study, six adult feline cadavers were examined using CTA, 3D printing, and casts injected with epoxy. The aorta, the portal vein, and the gallbladder of 3 feline cadavers were separately injected with a 50% mixture of colored vulcanized latex and hydrated barium sulfate as contrast medium to analyze by CT the arterial, venous and biliary systems. The other three cadavers were injected with a mixture of epoxy resin in the aorta, gallbladder and hepatic veins, separately. After the corrosion and washing process, hepatic vascular and biliary casts were obtained. The images obtained by CT showed the vascular and biliary system using a soft tissue window. For the identification of vascular and biliary structures, the 3D prints together with the 3D reconstructions were analyzed, and the results were compared with the casts obtained with epoxy resin. Each of the arterial, venous and biliary branches associated with each of the liver lobes were identified with the help of the printings. In conclusion, the creation of 3D prototypes of nonpathological feline hepatic parenchyma can be used in the veterinary clinic as a basis for the detection of pathological problems in addition to obtaining future pathological hepatic 3D models.
Open Access
Anatomía veterinaria: experiencia metodológica en el marco del espacio europeo de educación superior
(Murcia, Universidad de Murcia, Servicio de Publicaciones, 2008) Vázquez Autón, José María; Ayala Florenciano, María Dolores; Gil Cano, Francisco; Latorre Reviriego, Rafael Manuel; López Albors, Octavio Miguel; Martínez Gomariz, Francisco; Ramírez Zarzosa, Gregorio José; Sánchez Collado, Cayetano; Facultad de Veterinaria
Open Access
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
Open Access
Veterinary Students’ Assessment of 3D Anatomical Prints as New Teaching Material in Practical Veterinary Anatomy Classes
(MDPI, 2025-03-12) Díaz Martínez, Elena; Arencibia Espinosa, Alberto; Soler Laguía, Marta; Rojo Ríoz, Daniel; Ortuño Lorente, Ainara; Leotte Sánchez, María; Ceballos Francisco, Diana; García García, María Inmaculada; Kilroy, David; Sánchez Collado, Cayetano; Ayala Florenciano, María Dolores; Gil Cano, Francisco; Martínez Gomariz, Francisco; Ramírez Zarzosa, Gregorio José; Sánchez Collado, Cayetano; Anatomía y Anatomía Patológica Comparadas
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.
Open Access
Comparative anatomy of the nasal cavity in the common dolphin Delphinus delphis L., striped dolphin Stenella coeruleoalba M. and pilot whale Globicephala melas T.: a developmental study
(MDPI, 2021-02-08) Ríos y Loshuertos, Alvaro García de los; Soler Laguía, Marta; Arencibia Espinosa, Alberto; López Fernández, Alfredo; Covelo Figueiredo, Pablo; Martínez Gomariz, Francisco; Sánchez Collado, Cayetano; García Carrillo, Nuria; Ramírez Zarzosa, Gregorio José; Anatomía y Anatomía Patológica Comparada; Facultad de Veterinaria
Our goal was to analyze the main anatomical structures of the dolphin external nose and nasal cavity from fetal developmental stages to adult. Endoscopy was used to study the common development of the external nose and the melon, and nasal mucosa. Magnetic resonance imaging (MRI) and anatomical sections were correlated with anatomical sections. Computed tomography (CT) was used to generate 3D reconstructions of the nasal bones and nasal cavities to study its development. Dissections, histological and pathological studies were carried out on the nasal mucosa to understand its function. These results were compared with the horse. Endoscopy showed an external nose with two lips and the upper lip is divided by a groove due to the nasal septum and an obstruction of right nasal cavity was diagnosed in a newborn. Two diverticula (air sacs) were found in the nasal vestibule and an incisive recess (premaxillary sac) in the nasal cavity. These findings were corroborated by 3D reconstructions of the nasal cavities, MRI, anatomical sections and dissections. The presphenoid and ethmoid bones were fused at early stages of fetal development. The ethmoid is the last bone to ossify in the nasal cavity.
Open Access
Endoscopic study of the oral and pharyngeal cavities in the Common dolphin, Striped dolphin, Risso’s dolphin, Harbour porpoise and Pilot whale: reinforced with other diagnostic and anatomic techniques
(MDPI, 2021-05-22) García de los Ríos y Loshuertos, Álvaro; Soler Laguía, Marta; Arencibia Espinosa, Alberto; Martínez Gomariz, Francisco; Sánchez Collado, Cayetano; López Fernández, Alfredo; Gil Cano, Francisco; Seva Alcaraz, Juan; Ramírez Zarzosa, Gregorio José; Anatomía y Anatomía Patológica Comparadas
In this work, the fetal and newborn anatomical structures of the dolphin oropharyngeal cavities were studied. The main technique used was endoscopy, as these cavities are narrow tubular spaces and the oral cavity is difficult to photograph without moving the specimen. The endoscope was used to study the mucosal features of the oral and pharyngeal cavities. Two pharyngeal diverticula of the auditory tubes were discovered on either side of the choanae and larynx. These spaces begin close to the musculotubaric channel of the middle ear, are linked to the pterygopalatine recesses (pterygoid sinus) and they extend to the maxillopalatine fossa. Magnetic Resonance Imaging (MRI), osteological analysis, sectional anatomy, dissections, and histology were also used to better understand the function of the pharyngeal diverticula of the auditory tubes. These data were then compared with the horse’s pharyngeal diverticula of the auditory tubes. The histology revealed that a vascular plexus inside these diverticula could help to expel the air from this space to the nasopharynx. In the oral cavity, teeth remain inside the alveolus and covered by gums. The marginal papillae of the tongue differ in extension depending on the fetal specimen studied. The histology reveals that the incisive papilla is vestigial and contain abundant innervation. No ducts were observed inside lateral sublingual folds in the oral cavity proper and caruncles were not seen in the prefrenular space.
Open Access
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.