Vol 3, No 1

(Published)

Table of Contents

Open Access
Original Research Article
Article ID: 1721
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by Meisbel Daudinot López, Yoander Estrada Sardina
Imaging. Radiat. Res. 2020 , 3(1);    686 Views
Abstract The integration of medical images is the process of registering and fusing them to obtain a greater amount of diagnostic information. In this work an analysis is performed for the integration of images obtained through computed axial tomography and magnetic resonance imaging, for which a tool was developed in the Matlab program, where the registration is implemented through equivalent features; in addition, the pairs of images are compared by several fusion rules, with a view to identify the best algorithm in which the resulting fused image contains the most information from the original representations.
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Open Access
Original Research Article
Article ID: 1723
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by Sarahí Hernández-Juárez, Aldo Rodrigo Mejía-Rodríguez, Edgar R. Arce-Santana
Imaging. Radiat. Res. 2020 , 3(1);    570 Views
Abstract The present work shows an application of the Chan-Vese algorithm for the semi-automatic segmentation of anatomical structures of interest (lungs and lung tumor) in 4DCT images of the thorax, as well as their three-dimensional reconstruction. The segmentation and reconstruction were performed on 10 CT images, which make up an inspiration-expiration cycle. The maximum displacement was calculated for the case of the lung tumor using the reconstructions of the onset of inspiration, the onset of expiration, and the voxel information. The proposed method achieves appropriate segmentation of the studied structures regardless of their size and shape. The three-dimensional reconstruction allows us to visualize the dynamics of the structures of interest throughout the respiratory cycle. In the future, it is expected to have more evidence of the good performance of the proposed method and to have the feedback of the clinical expert, since the knowledge of the characteristics of anatomical structures, such as their dimension and spatial position, helps in the planning of Radiotherapy (RT) treatments, optimizing the radiation dose to cancer cells and minimizing it in healthy organs. Therefore, the information found in this work may be of interest for the planning of RT treatments.
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Open Access
Original Research Article
Article ID: 1724
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by Andrea Paola Najar-Céspedes, Esteban de Jesús Fuentes-Martínez
Imaging. Radiat. Res. 2020 , 3(1);    758 Views
Abstract I nt roduction:  Given the heterogeneous nature and inherent complexity of forensic medical expertise, the expert (medical professional or related areas) must make the best use of the technical and technological tools at his disposal. Imaging, referring to the set of techniques that allow obtaining images of the human body for clinical or scientific purposes, in any of its techniques, is a powerful support tool for establishing facts or technical evidence in the legal field. Objective:  To analyze the use of magnetic resonance and computed tomography in postmortem   diagnosis. Methodology:  information was searched in the databases PubMed, Science Direct, Springer Journal and in the search engine Google Scholar, using the terms “ X-Ray Computed Tomography ”, “ Magnetic Resonance Spectroscopy ” , “ Autopsy ”   and “ Forensic Medicine ”   published in the period 2008–2015. Results:  MRI is useful for the detailed study of soft tissues and organs, while computed tomography allows the identification of fractures, calcifications, implants and trauma. Conclusions:  In the reports found in the literature search, regarding the use of nuclear magnetic resonance and computed tomography in postmortem   cases, named by the genesis of the trauma, correlation was found between the use of imaging and the correct expert diagnosis at autopsy.
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Open Access
Original Research Article
Article ID: 1725
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by Luis Mariano Ferreira, Antonio Ricardo La Mura, José Álvarez, Patricio Giménez Ruiz, Pablo Diluca, Eduardo Ehyeremendi
Imaging. Radiat. Res. 2020 , 3(1);    677 Views
Abstract Imaging technology plays a key role in guiding endovascular treatment of aortic aneurysm, especially in the complex thoracoabdominal aorta. The combination of high quality images with a sterile and functional environment in the surgical suite can reduce contrast and radiation exposure for both patient and operator, in addition to better outcomes. This presentation aims to describe the current use of this technique, combining angiotomography and intraoperative cone beam computed tomography, image “fusion” and intravascular ultrasound, to guide procedures and thus improve the intraoperative success rate and reduce the need for reoperation. On the other hand, a procedure is described to create customized 3D templates with the high-definition images of the patient’s arterial anatomy, which serve as specific guides for making fenestrated stents in the operating room. These customized fenestration templates could expand the number of patients with complex aneurysms treated minimally invasively.
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Open Access
Review Article
Article ID: 1722
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by Matthias W. Wagner, Thierry A. G. M. Huisman, Rahel A. Kubik
Imaging. Radiat. Res. 2020 , 3(1);    694 Views
Abstract Acute abdomen is a frequent clinical picture in emergency diagnostics. Pathologic changes of the female genital organs play an important role. Gynecologic emergencies threaten fertility and are potentially life-threatening. Many differential diagnoses must be considered in the diagnostic process, depending on the age of the patient and any pregnancy. In particular, acute gastrointestinal symptoms often cannot be differentiated from gynecologic emergencies on clinical examination. Here, imaging makes a significant contribution to narrowing the differential diagnosis, making treatment decisions, and monitoring therapy. This review article will discuss the central role of imaging in the context of common gynecologic emergencies.
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Open Access
Review Article
Article ID: 1727
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by Andreas Mayr, Günter Reiter, Dietrich Beitzke
Imaging. Radiat. Res. 2020 , 3(1);    649 Views
Abstract Background:  Through the development of robust techniques and their comprehensive validation, cardiac magnetic resonance imaging (CMR) has developed a wide range of indications in its almost 25 years of clinical use. The recording of cardiac volumes and systolic ventricular function as well as the characterization of focal myocardial scars are now part of standard CMR imaging. Recently, the introduction of accelerated image acquisition technologies, the new imaging methods of myocardial T1 and T2 mapping and 4-D flow measurements, and the new post-processing technique of myocardial feature tracking have gained relevance. Method:  This overview is based on a comprehensive literature search in the PubMed database on new CMR techniques and their clinical application. Results and conclusion:  This article provides an overview of the latest technical developments in the field of CMR and their possible applications based on the most important clinical questions.
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Open Access
Review Article
Article ID: 1728
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by Konstantin Holzapfel, Andreas G. Schreyer
Imaging. Radiat. Res. 2020 , 3(1);    693 Views
Abstract Today, diffusion-weighted MRI is an important, complementary sequence in an MRI of the abdomen, especially in oncological questions, but also in inflammatory diseases. The following paper deals with the technical basics and shows typical indications and findings as well as the value of the method in the diagnosis of parenchymatous upper abdominal organs and the gastrointestinal tract.
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