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Visceral segmentation

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https://www.readbyqxmd.com/read/28767561/mixed-reality-in-visceral-surgery-development-of-a-suitable-workflow-and-evaluation-of-intraoperative-use-cases
#1
Igor M Sauer, Moritz Queisner, Peter Tang, Simon Moosburner, Ole Hoepfner, Rosa Horner, Rudiger Lohmann, Johann Pratschke
OBJECTIVE: The paper evaluates the application of a mixed reality (MR) headmounted display (HMD) for the visualization of anatomical structures in complex visceral-surgical interventions. A workflow was developed and technical feasibility was evaluated. SUMMARY OF BACKGROUND DATA: Medical images are still not seamlessly integrated into surgical interventions and, thus, remain separated from the surgical procedure.Surgeons need to cognitively relate 2-dimensional sectional images to the 3-dimensional (3D) during the actual intervention...
August 1, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28761442/effects-of-exercise-training-on-fat-loss-and-lean-mass-gain-in-mexican-american-and-korean-premenopausal-women
#2
Shenghui Wu, Kyung-Shin Park, Joseph B McCormick
We investigated the effect of exercise training on body composition change in women. Nineteen Mexican-American and 18 Korean premenopausal overweight/obese women were randomized into one of the following groups: control, low-intensity training group (LI), and high-intensity training group (HI). Subjects completed 12 weeks of training at 50-56% maximal oxygen consumption (LI) or 65-70% maximal oxygen consumption (HI). Body composition components were measured at baseline and after training using dual-energy X-ray absorptiometry for Mexican-Americans, while whole-body composition was measured by the direct segmental multifrequency bioelectrical impedance analysis and abdominal fat was measured by single-slice computed tomography for Koreans...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28753616/regeneration-of-the-digestive-system-in-the-crinoid-himerometra-robustipinna-occurs-by-transdifferentiation-of-neurosecretory-like-cells
#3
Nadezhda V Kalacheva, Marina G Eliseikina, Lidia T Frolova, Igor Yu Dolmatov
The structure and regeneration of the digestive system in the crinoid Himerometra robustipinna (Carpenter, 1881) were studied. The gut comprises a spiral tube forming radial lateral processes, which gives it a five-lobed shape. The digestive tube consists of three segments: esophagus, intestine, and rectum. The epithelia of these segments have different cell compositions. Regeneration of the gut after autotomy of the visceral mass progresses very rapidly. Within 6 h after autotomy, an aggregation consisting of amoebocytes, coelomic epithelial cells and juxtaligamental cells (neurosecretory neurons) forms on the inner surface of the skeletal calyx...
2017: PloS One
https://www.readbyqxmd.com/read/28746446/t-lymphocytes-and-macrophages-in-the-intestinal-tissues-of-dogs-infected-with-leishmania-infantum
#4
Diogo Tiago da Silva, Maria Luana Alves, Júlio Cesar Pereira Spada, Aline Cristine da Silva, Rita de Cássia Viveiros da Silveira, Trícia Maria Ferreira de Sousa Oliveira, Wilma Aparecida Starke-Buzetti
This study was about a semi-quantitative analysis of T lymphocytes (CD4+ and CD8+, FoxP3+ regulatory T cells), and macrophages in the gut wall of dogs naturally infected with Leishmania infantum. Thirteen dogs were divided into three groups: group 1 (G1, n=5), dogs with canine visceral leishmaniasis (CVL) and infected with L. infantum amastigotes in the intestine; group 2 (G2, n=5), dogs with CVL but without intestinal amastigotes; and group 3 (G3, n=3), uninfected dogs (control group). There was no significant difference (p ≥ 0...
April 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28723751/early-laparotomy-and-timely-reconstruction-for-patients-with-abdominal-electrical-injury-five-case-reports-and-literature-review
#5
REVIEW
Pi-Hong Zhang, Zan Liu, Li-Cheng Ren, Ji-Zhang Zeng, Geng-Wen Huang, Mu-Zhang Xiao, Jie Zhou, Peng-Fei Liang, Ming-Hua Zhang, Xiao-Yuan Huang
INTRODUCTION: High-tension electricity can cause devastating injuries that may result in abdominal wall loss, visceral damage, and sometimes major threat to life. The visceral organ may be exposed after debridement and require flap cover, but the tensile strength of abdominal wall may be lack even if flap transplanted. METHODS: From April 2007 through May 2015, 5 patients with severe abdominal electrical injury were treated at our hospital. Exploratory laparotomy was performed based on their clinical manifestations and debridement findings of abdominal wall at early stage, and decision regarding technique for reconstruction of abdominal wall was based on an assessment of the location and extent of the defect...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28721147/the-importance-of-two-metabolic-syndrome-diagnostic-criteria-and-body-fat-distribution-in-predicting-clinical-severity-and-prognosis-of-acute-myocardial-infarction
#6
Marko Mornar Jelavic, Zdravko Babic, Hrvoje Pintaric
INTRODUCTION: The interrelation between metabolic syndrome (MetS) (the revised National Cholesterol Education Program-Adult Treatment Panel III (NCEP-ATP III) and International Diabetes Federation (IDF)) and obesity indices in predicting clinical severity and prognosis of acute ST-elevation myocardial infarction (STEMI) is insufficiently known. MATERIAL AND METHODS: This prospective study included 250 acute STEMI patients treated with primary percutaneous coronary intervention...
June 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28708717/automatic-measurement-of-the-total-visceral-adipose-tissue-from-computed-tomography-images-by-using-a-multi-atlas-segmentation-method
#7
Pierre Decazes, Alexandra Rouquette, Annaëlle Chetrit, Pierre Vera, Isabelle Gardin
BACKGROUND: The visceral adipose tissue (VAT) volume is a predictive and/or prognostic factor for many cancers. The objective of our study was to develop an automatic measurement of the whole VAT volume using a multi-atlas segmentation (MAS) method from a computed tomography. METHODS: A total of 31 sets of whole-body computed tomography volume data were used. The reference VAT volume was defined on the basis of manual segmentation (VATMANUAL). We developed an algorithm, which measured automatically the VAT volumes using a MAS based on a nonrigid volume registration algorithm coupled with a selective and iterative method for performance level estimation (SIMPLE), called VATMAS_SIMPLE...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28701197/a-case-of-bowel-perforation-due-to-traumatic-hernia-at-a-pelvic-fracture-site-a-case-report-and-review-of-the-literature
#8
Ryota Tanaka, Hisashi Nagahara, Kiyoshi Maeda, Hiroshi Ohtani, Masatsune Shibutani, Tatsuro Tamura, Tetsuro Ikeya, Kenji Sugano, Yasuhito Iseki, Katsunobu Sakurai, Sadaaki Yamazoe, Kenjiro Kimura, Takahiro Toyokawa, Ryosuke Amano, Naoshi Kubo, Hiroaki Tanaka, Kazuya Muguruma, Kosei Hirakawa, Masaichi Ohira
BACKGROUND: Common complications of pelvic fractures include visceral injury, large-volume hemorrhage, genitourinary injury, rectal injury, and pulmonary embolism. On the other hand, traumatic hernia is a rare complication, especially in association with pelvic fractures. We report a case of bowel perforation due to traumatic hernia at a pelvic fracture site. CASE PRESENTATION: A 65-year-old female was presented at our hospital for further examination and treatment of ileus...
July 12, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28687502/endovascular-treatment-of-distal-tears-located-in-the-reno-viseceral-segment-with-bare-metal-stents-and-coils-in-a-complicated-type-b-aortic-dissection
#9
Qingsheng Lu, Yanqing Chen, Yongxue Zhang, Hongfei Wang, Hanyan Li, Jiaxuan Feng, Huajuan Mao, Zaiping Jing
PURPOSE: To provide an endovascular strategy of treating patent re-entries adjacent to visceral branches in the management of aortic dissections. CASE REPORT: A 45-year-old male who had received endovascular treatment for a type B aortic dissection was again admitted for his intermittent abdominal pain. Distal tears located in the reno-visceral segment was left untreated in the initial procedure, and was thought to be related to the expansion of the false lumen during follow-up...
July 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28685523/the-role-of-surgeon-modified-fenestrated-stent-grafts-in-the-treatment-of-aneurysms-involving-the-branched-visceral-aorta
#10
Benjamin J Pearce, Salvatore T Scali, Adam W Beck
Acceptance of endovascular technology has followed a predictable pattern in the treatment of aortic aneurysm disease. Initially, endovascular aneurysm repair (EVAR) was used to treat infrarenal abdominal aortic aneurysms (AAA) only in patients deemed medically unsuitable for open surgical repair (OSR). With improvement in device design, increased operative experience and favorable mortality benefits in randomized control trials, EVAR is now the preferred method for treatment of AAA worldwide. As the results with OSR are even worse as one ascends the aorta into the visceral segment and above, it stands to reason that EVAR technology to accommodate the aortic branches should have a similar adoption in treatment of proximal AAA and thoraco-abdominal aortic aneurysm (TAAA) disease...
July 7, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28681397/infatile-hemangiomas-with-minimal-or-arrested-growth-associated-with-soft-tissue-hypertrophy-a-case-series-of-10-patients
#11
S Planas-Ciudad, E Roé Crespo, I Sánchez-Carpintero, I J Frieden, A Martín-Santiago, P Redondo Bellón, E Moreno Artero, E Osier, L Puig Sanz, E Baselga Torres
BACKGROUND: Infantile hemangiomas with minimal or arrested growth (IH-MAGs) are characterized by a proliferative component of less than 25% of its surface area. The co-occurrence of IH-MAGs and soft tissue anomalies is rare and case series of this association are lacking. OBJECTIVE: We present ten cases of IH-MAGs associated with soft tissue hypertrophy and describe their clinical features. METHODS: We reviewed all infantile hemangiomas with minimal or arrested growth seen between 2009 to 2016 in the dermatology clinic department at Hospital Santa Creu i Sant Pau, Barcelona...
July 5, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28665377/-the-novel-approaches-to-the-rehabilitation-of-the-patients-presenting-with-gastroesophageal-reflux-disease-and-co-morbid-pathology
#12
N E Komleva, A A Marjanovsky, A N Danilov, L G Agasarov
This paper was designed to discuss the problems of co-morbidity and approaches to the rehabilitation of the patients presenting with gastroesophageal reflux disease and a concomitant pathology and to analyze the issues concerning the possible vertebro-visceral correlations inherent in the diseases of the internal organs. AIM: To evaluate the vertebro-neurological status of the thoracic segment of the vertebral column in the patients suffering from gastroesophageal reflux disease and to further improve the methods for their treatment taking into consideration the concomitant pathology, if any...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/28664407/combined-use-of-electron-microscopy-and-intravital-imaging-captures-morphological-and-functional-features-of-podocyte-detachment
#13
REVIEW
James L Burford, Georgina Gyarmati, Isao Shirato, Wilhelm Kriz, Kevin V Lemley, János Peti-Peterdi
The development of podocyte injury and albuminuria in various glomerular pathologies is still incompletely understood due to technical limitations in studying the glomerular filtration barrier (GFB) in real-time. We aimed to directly visualize the early morphological and functional changes of the GFB during the development of focal segmental glomerulosclerosis (FSGS) using a combination of transmission electron microscopy (TEM) and in vivo multiphoton microscopy (MPM) in the rat puromycin aminonucleoside (PAN) model...
August 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28603565/current-concepts-congenital-scoliosis
#14
Agnivesh Tikoo, Manish K Kothari, Kunal Shah, Abhay Nene
BACKGROUND: Congenital scoliosis is one of the 'difficult to treat' scenarios which a spine surgeon has to face. Multiple factors including the age of child at presentation, no definite pattern of deformity and associated anomalies hinder the execution of the ideal treatment plan. All patients of congenital scoliosis need to be investigated in detail. X rays and MRI of spine is usually ordered first. Screening investigations to rule out VACTERL (Visceral, Anorectal, Cardiac, Tracheo-esophageal fistula, Renal and Lung) abnormalities are required...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28573651/periprostatic-innervation-new-issues-based-on-segmental-analysis-of-10-human-cadaver-pelvic-blocs
#15
Tiago M Rodrigues, Anuar I Mitre, Luiz Fernando F da Silva, Lísias N Castilho, Fabiano A Simões, Paulo H N Saldiva, Miguel Srougi
BACKGROUND: The exact paths of periprostatic nerves have been under debate over the last decades. In the present study, the topographic distribution of nerves around the prostate and their relative distances from the prostatic capsule were analyzed in male cadaver visceral blocs. METHODS: The pelvic organs from ten fresh male cadavers were removed and serial sectioned en bloc for histological investigation. The macroslices was divided into four sectors. Each sector was centrally covered with a raster dividing each sector in three subsectors numbered clockwise...
July 2017: Prostate
https://www.readbyqxmd.com/read/28562203/is-hepatic-triglyceride-content-associated-with-aortic-pulse-wave-velocity-and-carotid-intima-media-thickness-the-netherlands-epidemiology-of-obesity-study
#16
Ralph L Widya, Renée de Mutsert, Jos J M Westenberg, Karin B Gast, Martin den Heijer, Saskia le Cessie, Johannes W A Smit, J Wouter Jukema, Frits R Rosendaal, Albert de Roos, Hildo J Lamb
Purpose To test the hypothesis that hepatic triglyceride content is associated with subclinical vascular impairment and is not confounded by various cardiometabolic risk factors. Materials and Methods This study was approved by the institutional review board, and all participants gave written informed consent. In this cross-sectional analysis of baseline measurements of the Netherlands Epidemiology of Obesity study, a population-based cohort study, 1899 participants (52% men; mean age, 55 years ± 6 [standard deviation]) underwent magnetic resonance (MR) spectroscopy and MR imaging to assess hepatic triglyceride content, aortic pulse wave velocity (PWV), and visceral fat...
May 29, 2017: Radiology
https://www.readbyqxmd.com/read/28559175/rescue-of-failed-endovascular-aortic-aneurysm-repair-using-the-fenestrated-anaconda-device
#17
Jürgen Falkensammer, Fadi Taher, Miriam Uhlmann, Kornelia Hirsch, Johannes Strassegger, Afshin Assadian
OBJECTIVE: Endovascular aortic aneurysm repair (EVAR) with a fenestrated device (FEVAR) allows an extension of the proximal sealing zone above the renal arteries to an adequate, healthier segment of the aorta. This feature makes FEVAR an option to treat patients with a diseased aortic neck or type Ia endoleak after EVAR. The aim of this investigation was to present a single-center experience with FEVAR for patients with an abdominal aortic endograft in situ compared with primary FEVAR...
May 27, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28535911/validation-of-a-free-software-for-unsupervised-assessment-of-abdominal-fat-in-mri
#18
Michele Maddalo, Ivan Zorza, Stefano Zubani, Giorgio Nocivelli, Giulio Calandra, Pierantonio Soldini, Lorella Mascaro, Roberto Maroldi
PURPOSE: To demonstrate the accuracy of an unsupervised (fully automated) software for fat segmentation in magnetic resonance imaging. The proposed software is a freeware solution developed in ImageJ that enables the quantification of metabolically different adipose tissues in large cohort studies. METHODS: The lumbar part of the abdomen (19cm in craniocaudal direction, centered in L3) of eleven healthy volunteers (age range: 21-46years, BMI range: 21.7-31.6kg/m(2)) was examined in a breath hold on expiration with a GE T1 Dixon sequence...
May 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28506502/autonomic-dysreflexia-after-spinal-cord-injury-systemic-pathophysiology-and-methods-of-management
#19
REVIEW
Khalid C Eldahan, Alexander G Rabchevsky
Traumatic spinal cord injury (SCI) has widespread physiological effects beyond the disruption of sensory and motor function, notably the loss of normal autonomic and cardiovascular control. Injury at or above the sixth thoracic spinal cord segment segregates critical spinal sympathetic neurons from supraspinal modulation which can result in a syndrome known as autonomic dysreflexia (AD). AD is defined as episodic hypertension and concomitant baroreflex-mediated bradycardia initiated by unmodulated sympathetic reflexes in the decentralized cord...
May 8, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28501661/extensive-cerebrovascular-and-visceral-artery-dissection-and-pseudoaneurysm-with-underlying-segmental-arterial-mediolysis
#20
Abhishek Sethi, Jonathan R Hyde, Christina M Thaler, Nedaa Skeik
Segmental arterial mediolysis (SAM) is a non-atherosclerotic, non-hereditary vasculopathy that most commonly involves abdominal aortic branches and predominantly affects middle-age and elderly populations. Lysis of the outer arterial media results in separation of the media from the adventitia leading to dissecting aneurysms and/or pseudoaneurysms. We report a unique case of a 47-year-old man who presented with bilateral internal carotid artery dissection followed by dissections and aneurysms involving multiple visceral arteries...
May 10, 2017: Annals of Vascular Surgery
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