Examinando por Autor "Salazar-Gamarra, Rodrigo"

Mostrando 1 - 5 de 5

Acceso abierto
3D Bitemark Analysis in Forensic Odontology Utilizing a Smartphone Camera and Open-Source Monoscopic Photogrammetry Surface Scanning
(Association of Support to Oral Health Research (APESB), 2023-01) Kurniawan, Arofi; Chusid, An’nisaa; Utomo, Haryono; Istiqomah Marini, Maria; Novia Rizky, Rizky; Widayati Prakoeswa, Beshlina Fitri; Hamdani, Janice; Salazar-Gamarra, Rodrigo; Lauria Dib, Luciano; Alias, Aspalilah; Putera Mohd Yusof, Mohd. Yusmiaidil; Marya, Anand
“Bitemark analysis is a challenging procedure in the field of criminal case investigation. The unique characteristics of dentition are used to find the best match between the existing patterned injury and the suspected perpetrator in bitemark identification. Bitemark analysis accuracy can be influenced by various factors, including biting pressure, tooth morphology, skin elasticity, dental cast duplication, timing, and image quality. This review article discusses the potential of a smartphone camera as an alternative method for 3D bitemark analysis. Bitemark evidence on human skin and food should be immediately recorded or duplicated to retrieve long-lasting proof, allowing for a sufficient examination period. Various studies utilizing twodimensional (2D) and three-dimensional (3D) technologies have been developed to obtain an adequate bitemark analysis. 3D imaging technology provides accurate and precise analysis. However, the currently available method using an intraoral scanner (IOS) requires high-cost specialized equipment and a well-trained operator. The numerous advantages of monoscopic photogrammetry may lead to a novel method of 3D bitemark analysis in forensic odontology. Smartphone cameras and monoscopic photogrammetry methodology could lead to a novel method of 3D bitemark analysis with an efficient cost and readily available equipment.“
Acceso abierto
Comparison of Models for 3D Printing of Solitary Fibrous Tumor Obtained Using Open-Source Segmentation Software
(MDPI, 2022-11-16) Tincopa, Jean Pierre; Salazar-Gamarra, Rodrigo; Lopez-Hinostroza, Madaleine; Moya-Salazar, Belén; Contreras-Pulache, Hans; Moya-Salazar, Belén
“The objective of the present study is to make a comparison between various free and open-source software used for medical image processing, such as 3D Slicer (version 4.11), ITK-Snap (version 3.8), and Invesalius (version 3.1) in its application for the calculation of solitary fibrous tumor volumes. Knowing the size, shape, and volume of mesothelioma is decisive for clinical decisionmaking by health personnel when performing surgery; the currently used standard procedure is manual segmentation through magnetic resonance imaging (MRI). This process tends to take a long time to complete. On the other hand, automatic segmentation software is much faster and more user-friendly, so looking for software that gives us greater accuracy when doing this task is very important. This work obtained magnetic resonance imaging (MRI) of a mesothelioma patient, and the images were segmented in the 3 different programs to evaluate the concordance between the software later.“
Acceso abierto
Comparison of Models for 3D Printing of Solitary Fibrous Tumor Obtained Using Open-Source Segmentation Software
(MDPI, 2022-11-16) Tincopa, Jean Pierre; Salazar-Gamarra, Rodrigo; Lopez-Hinostroza, Madaleine; Moya-Salazar, Belén; Contreras-Pulache, Hans; Moya-Salazar, Belén
“The objective of the present study is to make a comparison between various free and open-source software used for medical image processing, such as 3D Slicer (version 4.11), ITK-Snap (version 3.8), and Invesalius (version 3.1) in its application for the calculation of solitary fibrous tumor volumes. Knowing the size, shape, and volume of mesothelioma is decisive for clinical decisionmaking by health personnel when performing surgery; the currently used standard procedure is manual segmentation through magnetic resonance imaging (MRI). This process tends to take a long time to complete. On the other hand, automatic segmentation software is much faster and more user-friendly, so looking for software that gives us greater accuracy when doing this task is very important. This work obtained magnetic resonance imaging (MRI) of a mesothelioma patient, and the images were segmented in the 3 different programs to evaluate the concordance between the software later.“
Acceso abierto
Evaluation of additive manufacturing processes in the production of oculo-palpebral prosthesis [version 2; peer review: 1 approved, 1 approved with reservations]
(F1000 Research Ltd, 2023-02-14) Eyzaguirre, Diego; Salazar-Gamarra, Rodrigo; Binasco Lengua, Salvatore; Lauria Dib, Luciano
“Background: Within the broad spectrum of rehabilitation, maxillofacial prostheses are those that are made to restore the appearance of a person who has suffered facial deformation due to cancer, accidents, congenital diseases, among others. Although these are not made to restore functionality, they have a major impact on restoring the patient's quality of life as it is an area so closely linked to their identity. For his reason, they have to be carefully tailored for each patient, which tends to increase cost and production time Objectives: The purpose of this research is to compare different additive manufacturing mechanisms, to evaluate which of them achieves the best reproduction of the leather details and maintains the desired dimensional properties. Methods: The manufacturing equipment will be selected comparing 7 different 3D printing of an oculo-palpebral model for a future maxillofacial prosthesis, obtained from the “Mais Identidade” Method. They were evaluated according to their economic, physical and aesthetic characteristics. Results: The results of the evaluations show that: the highest score in the economic evaluation was obtained by PhotonS; in the physical evaluation it was obtained by PhotonS, Phrozen Suffle XL and PRO95; and in the aesthetic evaluation it was obtained by PRO95 and Objet500. Finally, according to the multi-criteria evaluation, the highest score was obtained by the Photon S and PRO95.“
Acceso abierto
Three-Dimensional Printing and Digital Flow in Human Medicine: A Review and State-of-the-Art
(MDPI, 2022-12-15) Salazar-Gamarra, Rodrigo; Contreras-Pulache, Hans; Cruz-Gonzales, Gloria; Binasco, Salvatore; Cruz-Gonzales, William; Moya-Salazar, Jeel
The use of exponential technologies is changing how people live and interact; this has been called the “Fourth Industrial Revolution”. Within these technologies, 3D printing is playing a leading role, especially in health. In this context, this literature review aims to present the state of the art of 3D printing, its digital workflow and applications in medicine, and the advantages of its use in public health. Consequently, it describes the benefits for the patient and the medical team from a diagnostic stage, a brief history of its development, what is the digital flow when working with a 3D printer, what experiences of its use in medicine, and finally, how this technology used in medicine and public health can be part of the Digital Transformation in Peru.