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Institution: rnfinity
Nobuhisa Matsuhashi
Nobuhisa Matsuhashi
Institution: Department of Gastroenterological Surgery, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
Email: nobuhisa517@hotmail.com
Background Even if 3D angiographic images of preoperative contrast-enhanced computed tomography (CT) are created, the coronal and axial sections can be unclear, and thus, it is difficult to achieve projection awareness similar to that of actual laparoscopic images. In recent years, the technology of...
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Background Even if 3D angiographic images of preoperative contrast-enhanced computed tomography (CT) are created, the coronal and axial sections can be unclear, and thus, it is difficult to achieve projection awareness similar to that of actual laparoscopic images. In recent years, the technology of analyzing and applying medical images has advanced, and surgical simulation and navigation have been widely used to improve the safety of surgical operations. It is important to understand pelvic anatomy in the area of rectal cancer, and use of the SYNAPSE VINCENT makes it possible to simulate the anatomy before surgery, which is very useful in educating surgeons and their assistants.
Materials and methods An important objective in surgery is to understand the anatomy of the external/internal iliac arteries and lymph nodes in lateral lymph node dissection (LLD) for rectal cancer. In this study, we explored the accuracy and usefulness of SYNAPSE VINCENT images of pelvic anatomy (especially vascular anatomy) analyzed preoperatively in two cases of LLD for rectal cancer in our department.
Results The patients were two men aged 73 and 57 years, respectively. Both patients underwent robotic abdominal perineal resection and LLD with neoadjuvant chemoradiotherapy. The operating times for LLD were 138 and 106 min, estimated blood loss was less than 10 mL and 20 mL, and the harvested lymph nodes were nos. 21 and 22, respectively. The SYNAPSE VINCENT could be used for simulation and navigation before and during surgery. For experienced surgeons, the system helped them carry out operations more accurately.
Conclusion In the future, surgical support using virtual reality, augmented reality, and mixed reality based on medical images will be useful and is expected to improve the safety, accuracy, and efficiency of surgery, which is extremely useful for both young and skilled surgeons preparing for difficult operations.
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Posted 1 year ago
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Institution: rnfinity
Artur Pasternak
Artur Pasternak
Institution: Department of Anatomy, Jagiellonian University, ul. Kopernika 12, 31-034 Kraków, Poland
Email: artur.pasternak@uj.edu.pl
The morphometry and morphology of the components of extrahepatic biliary tree show extensive variations. A beforehand recognition of these variations is very crucial to prevent unintended complications while performing surgeries in this region. This study was conducted to analyze the configuration o...
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The morphometry and morphology of the components of extrahepatic biliary tree show extensive variations. A beforehand recognition of these variations is very crucial to prevent unintended complications while performing surgeries in this region. This study was conducted to analyze the configuration of the extrahepatic biliary tree and its possible variations, as well as measure the components that limit the cystohepatic triangle. Articles were searched in major online indexed databases (Medline and PubMed, Scopus, Embase, CINAHL Plus, Web of Science and Google Scholar) using relevant key words. A total of 73 articles matched the search criteria of which 55 articles were identified for data extraction. The length of left and right hepatic duct in majority of studies was found to be >10 mm. A wide range of diameters of hepatic ducts were observed between 5-43 mm. The average length of cystic duct is around 20 mm. The length and diameter of the common bile duct are 50-150 mm and 3-9 mm respectively. The most frequently observed pattern of insertion of cystic duct into common hepatic duct is right lateral, rarely anterior, or posterior spiral insertion can present. The results of this study will provide a standard reference range which instead will help to differentiate the normal and pathological conditions.
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Posted 1 year ago
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Institution: rnfinity
Karl Waked
Karl Waked
Institution: University Hospital Brussel, Laarbeeklaan 101, 1090 Brussels, Belgium
Email: karl.waked@icloud.com
"Background: The arterial anatomy of the face is extremely variable. Despite numerous cadaver dissections and anatomical descriptions, the exact location of the superficial facial arteries remains unpredictable. This ignorance is a determining factor in the pathophysiology of intravascular filler in...
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"Background: The arterial anatomy of the face is extremely variable. Despite numerous cadaver dissections and anatomical descriptions, the exact location of the superficial facial arteries remains unpredictable. This ignorance is a determining factor in the pathophysiology of intravascular filler injections, potentially causing skin necrosis and blindness.
Objectives: The main objective of this study is to evaluate the accuracy of an augmented reality (AR) application that visualizes the individual arterial anatomy of the face.
Methods: A workflow was developed during which a magnetic resonance angiography (MRA) mapped the superficial arteries of the face. The images were further processed into an AR image that was visualized on the patient's face using a specifically designed smartphone application. The accuracy of the AR image and the position of each individual artery were analyzed using duplex ultrasound (US).
Results: A total of 216 facial arteries were visualized in 20 patients. The superficial temporal (100%), supratrochlear (92.5%), facial (75%), and angular (82.5%) arteries were visualized the most. The inferior labial (17.5%), dorsal nasal (22.5%), and supraorbital (42.5%) arteries were the most difficult to visualize through MRA. The average deviation between the artery visible on the AR image and the location assessed by US was 0.30 mm (standard deviation = +/- 0.66 mm). There were no complications reported.
Conclusions: The combination of a risk-free MRA to map the individual arteries of the face and the processing into an AR image may be considered as a useful and accurate tool during dermal filler injections to potentially minimize the risk of intravascular filler injections."
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Posted 1 year ago
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Institution: rnfinity
Emma C. Hart
Emma C. Hart
Institution: School of Physiology, Pharmacology and Neurosciences, Biomedical Sciences Building, University of Bristol, United Kingdom
Email: emma.hart@bristol.ac.uk
"BACKGROUND: Variants in the posterior anatomy of the cerebral circulation are associated with hypertension and lower cerebral blood flow in midlife (age ≈55 years); however, whether these variants are a result of aging or long-term exposure to high blood pressure is unclear. Additionally, the rol...
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"BACKGROUND: Variants in the posterior anatomy of the cerebral circulation are associated with hypertension and lower cerebral blood flow in midlife (age ≈55 years); however, whether these variants are a result of aging or long-term exposure to high blood pressure is unclear. Additionally, the role these variants play in early onset of hypertension (<40 years) and poor cerebral perfusion in this population is unknown.
METHODS: We retrospectively examined whether specific cerebrovascular variants (vertebral artery hypoplasia and absent/hypoplastic posterior communicating arteries (an incomplete posterior circle of Willis) measured via magnetic resonance angiography) were associated with a diagnosis of hypertension in 220 young adults (<40 years; n=164 primary hypertensive [mean age±SD, 32±6 years] and n=56 [30±6 years] normotensive adults). Whether cerebrovascular variants were associated with lower cerebral blood flow (phase-contrast angiography) was measured in the hypertensive group only (n=146).
RESULTS: Binary logistic regression (adjusted for age, sex, and body mass index) showed that vertebral artery hypoplasia with an incomplete posterior circle of Willis was associated with hypertension diagnosis (P<0.001, odds ratio; 11.79 [95% CI, 3.34-41.58]). Vertebral artery hypoplasia plus an incomplete circle of Willis was associated with lower cerebral blood flow in young adults with hypertension (P=0.0172).
CONCLUSIONS: Vertebral artery hypoplasia plus an incomplete posterior circle of Willis independently predicts hypertension in young adults suggesting that this variant is not acquired with aging into midlife. Importantly this variant combination was associated with lower cerebral perfusion, which may have long-term consequences on cerebrovascular health in young adults with hypertension."
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Posted 1 year ago
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Kacper Ruzik,
Kacper Ruzik
Institution: Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland
Email: kacper.ruzik@umed.lodz.pl
Karolina Westrych,
Karolina Westrych
Institution: Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland
Email: Karolina.westrych@stud.umed.lodz.pl
Marko Konschake,
Marko Konschake
Institution: Division of Clinical and Functional Anatomy, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstr. 59, 6020 Innsbruck, Austria
Email: marko.konschake@i-med.ac.at
R. Tubbs,
R. Tubbs
Institution: Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA, USA
Email: shane.tubbs@icloud.com
Piotr Karauda,
Piotr Karauda
Institution: Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland
Email: Piotr.karauda@umed.lodz.pl
Łukasz Olewnik
Łukasz Olewnik
Institution: Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland
Email: Lukasz.olewnik@umed.lodz.pl
The fibularis brevis and fibularis longus muscles belong to the lateral compartment of the leg. The fibularis brevis is morphologically variable, especially in the number of tendons and place of insertion. Its type of insertion is correlated with the presence of a fibularis digiti quinti, which is a...
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The fibularis brevis and fibularis longus muscles belong to the lateral compartment of the leg. The fibularis brevis is morphologically variable, especially in the number of tendons and place of insertion. Its type of insertion is correlated with the presence of a fibularis digiti quinti, which is also anatomically variable. We present a case study based on dissection of a seventy-three-year-old female cadaver with an unusual insertion of the fibularis brevis muscle. The tendon had three bands inserting into the fifth metatarsal bone. There was a coexisting fibularis digiti quinti, which was fused with the fibularis tertius muscle. Awareness of such anatomical variation could be useful during reconstructive surgery and planning rehabilitation protocols.
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Posted 1 year ago
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Institution: rnfinity
Grigol Keshelava
Grigol Keshelava
Institution: Department of Vascular Surgery, Clinic “Helsicore,”, Tevdore Mgvdeli Street 13 Tbilisi, Georgia
Email: gagakeshelava@gmail.com
Leonardo da Vinci conducted many anatomical studies during his life. Today, almost the complete set of these anatomical drawings and comments is owned by the British Crown and resides in the Royal Library at Windsor Castle, United Kingdom.Through the program Paint X, we moved two details on the pain...
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Leonardo da Vinci conducted many anatomical studies during his life. Today, almost the complete set of these anatomical drawings and comments is owned by the British Crown and resides in the Royal Library at Windsor Castle, United Kingdom.Through the program Paint X, we moved two details on the painting "Saint John the Baptist." The moving details are circled along the faint contour by Leonardo da Vinci himself. We obtained heart and aortic arch imaging.
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Posted 1 year ago
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Institution: rnfinity
Andy Yeung
Andy Yeung
Institution: Oral and Maxillofacial Radiology, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
Email: ndyeung@hku.hk
The radiographic anatomy on dental panoramic images is essential knowledge for proper diagnosis and treatment planning purposes. No prior study has examined the content of YouTube videos with regard to radiographic anatomy on panoramic radiography. The objective of this study was to provide a conten...
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The radiographic anatomy on dental panoramic images is essential knowledge for proper diagnosis and treatment planning purposes. No prior study has examined the content of YouTube videos with regard to radiographic anatomy on panoramic radiography. The objective of this study was to provide a content analysis on these videos. The initial search string was: (panoramic anatomy). An additional search was performed with the search string: (OPG landmarks). By screening the resultant videos and their related videos (recommended by YouTube as a list on the right of the screen), a total of 62 videos were screened. Videos were excluded if they were irrelevant (e.g., focusing on radiographic errors without covering the anatomy), elaborating mainly with drawings without showing the landmarks on panoramic images, duplicate videos, and non-English speaking. Finally, 38 videos were included and analyzed. Most of them showed clear panoramic images and had clear tracing or delineation of the anatomical landmarks. On average, each video described 26 landmarks, including 12.3 from the midfacial region, 8.2 from the mandible, and 5.2 from soft tissue/air space/others. The videos were of good quality in general, with some frequent shortcomings being lack of visual aid with skull and schematic diagrams, and lack of discussion on clinical relevance. The maxillary sinus was the structure mostly involved in wrong information, particularly the wrong delineation of its posterior wall.
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Posted 1 year ago
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Lauren Betancourt,
Lauren Betancourt
Institution: Children’s Hospital of San Antonio, San Antonio, TX 78207, USA
Email: laurenashleygabriel@gmail.com
Harinder Singh,
Harinder Singh
Institution: Children’s Hospital of San Antonio, San Antonio, TX 78207, USA
Email: harinder.Singh@bcm.edu
Daniel Nento,
Daniel Nento
Institution: Children’s Hospital of San Antonio, San Antonio, TX 78207, USA
Email: Daniel.Nento@bcm.edu
Arpit Agarwal
Arpit Agarwal
Institution: Children’s Hospital of San Antonio, San Antonio, TX 78207, USA
Email: arpit.agarwal@bcm.edu
Heterotaxy is a rare syndrome associated with cardiac complexity, anatomic variability and high morbidity and mortality. It is often challenging to visualize and provide an accurate diagnosis of the cardiac anatomy prior to surgery with the use of conventional imaging techniques. We report a unique ...
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Heterotaxy is a rare syndrome associated with cardiac complexity, anatomic variability and high morbidity and mortality. It is often challenging to visualize and provide an accurate diagnosis of the cardiac anatomy prior to surgery with the use of conventional imaging techniques. We report a unique case demonstrating how the use of three-dimensional (3D) cardiac printed model allowed us to better understand the anatomical complexity and plan a tailored surgical approach for successful biventricular repair in a patient with heterotaxy syndrome.
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Posted 1 year ago
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Marco Sarigu,
Marco Sarigu
Institution: Centro Conservazione Biodiversità (CCB), Dipartimento di Scienze della Vita e dell’Ambiente (DISVA), Università degli Studi di Cagliari, Viale Sant’Ignazio da Laconi, 13, 09123 Cagliari, Italy
Email: igu@unica.it
Diego Sabato,
Diego Sabato
Institution: Departament de Prehistòria i Arqueologia, Facultat de Geografía i Historia, Universitat de València, Av. Blasco Ibáñez, 28, 46010 Valencia, Spain
Email: osabato@libero.it
Giovanna Bosi,
Giovanna Bosi
Institution: Laboratorio di Palinologia e Paleobotanica, Dipartimento di Scienze della Vita, Università di Modena e Reggio Emilia, Via Campi, 287, 41125 Modena, Italy
Email: anna.bosi@unimore.it
Salvador Torres,
Salvador Torres
Institution: Laboratório de Análise de Sementes, Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido (UFERSA), Av. Francisco Mota, Bairro Costa e Silva, 572, Mossoró 59625-900, Brazil
Email: rres@ufersa.edu.br
Mariano Ucchesu,
Mariano Ucchesu
Institution: Institut des Sciences de l’Évolution (ISEM), Centre National de la Recherche Scientifique (CNRS) Université Montpellier, UMR 5554, CEDEX 05, 34095 Montpellier, France
Email: ano.ucchesu@umontpellier.fr
Maria Loi,
Maria Loi
Institution: Centro Conservazione Biodiversità (CCB), Dipartimento di Scienze della Vita e dell’Ambiente (DISVA), Università degli Studi di Cagliari, Viale Sant’Ignazio da Laconi, 13, 09123 Cagliari, Italy
Email: c@unica.it
Oscar Grillo,
Oscar Grillo
Institution: Centro Conservazione Biodiversità (CCB), Dipartimento di Scienze della Vita e dell’Ambiente (DISVA), Università degli Studi di Cagliari, Viale Sant’Ignazio da Laconi, 13, 09123 Cagliari, Italy
Email: r.grillo.mail@gmail.com
Gianluigi Bacchetta
Gianluigi Bacchetta
Institution: Centro Conservazione Biodiversità (CCB), Dipartimento di Scienze della Vita e dell’Ambiente (DISVA), Università degli Studi di Cagliari, Viale Sant’Ignazio da Laconi, 13, 09123 Cagliari, Italy
Email: het@unica.it
The discovery of several waterlogged plant remains in a Middle Ages context (1330-1360 AD) in Sassari (NS, Sardinia, Italy) enabled the characterisation of archaeological plum fruit stones and watermelon and grape seeds through computer image analysis. Digital seed/endocarp images were acquired by a...
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The discovery of several waterlogged plant remains in a Middle Ages context (1330-1360 AD) in Sassari (NS, Sardinia, Italy) enabled the characterisation of archaeological plum fruit stones and watermelon and grape seeds through computer image analysis. Digital seed/endocarp images were acquired by a flatbed scanner and processed and analysed by applying computerised image analysis techniques. The morphometric data were statistically elaborated using stepwise linear discriminant analysis (LDA), allowing comparisons among archaeological remains, wild populations and autochthonous cultivars. Archaeological samples of plum were compared with 21 autochthonous cultivars of Prunus domestica from Sardinia, while archaeological watermelon seeds were compared with 36 seed lots of Citrullus from Europe, Africa and Asia. Moreover, archaeological grape seeds were compared with 51 autochthonous traditional cultivars of Vitis vinifera subsp. vinifera from Sardinia, 16 cultivars from Tuscany, six cultivars from Liguria, and eight cultivars from Catalonia (Spain). Archaeological plum remains showed morphological affinity with five cultivars of Sardinia. Seed features of the archaeological watermelon remains demonstrated affiliation with a proper sweet dessert watermelon, Citrullus lanatus, and similarity with some Sardinian cultivars. Regarding the archaeological remains of grape, morphometric comparisons showed a high similarity with autochthonous cultivars from Catalonia and Liguria. This study provides new information about ancient fruit cultivated and consumed during the Middle Ages in Sardinia.
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Posted 1 year ago
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Hana Riani
Hana Riani
Institution: Faculty of Arts and Humanities, Department of English, Sousse, Tunisia
Email: hanariani@outlook.fr
This article accounts for the process of legitimization as a mere instrument of control in society where symbolic power is manifested. By conducting a critical discourse analysis in combination with frameworks for analyzing legitimating devices in discourse as developed by Theo van Leeuwen (2007) an...
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This article accounts for the process of legitimization as a mere instrument of control in society where symbolic power is manifested. By conducting a critical discourse analysis in combination with frameworks for analyzing legitimating devices in discourse as developed by Theo van Leeuwen (2007) and Antonio Reyes (2011), this study scrutinizes the legitimation strategies used in Ben Affleck’s speech before the American House Foreign Affairs Committee on Congo crisis (2011). The paper also investigates the linguistic devices leaned on by this social actor to advance particular political ends. The results from the qualitative analysis have shown that this activist establishes links with his audience outlining common values firmly grounded on US history, cultural tradition and political ideologies. His reasoning constructs specific understandings of US involvement in the new “war on terror” legitimized through (1) hypothetical future, (2) rationality, (3) voices of expertise and (4) altruism.
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Posted 1 year ago
