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Visceral segmentation

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https://www.readbyqxmd.com/read/27916214/assessment-of-abdominal-fat-using-high-field-magnetic-resonance-imaging-and-anthropometric-and-biochemical-parameters
#1
Ali Al-Radaideh, Reema Tayyem, Kholoud Al-Fayomi, Nisreen Nimer, Amer Malkawi, Rana Al-Zu Bi, Lana Agraib, Imad Athamneh, Nawal Hijjawi
BACKGROUND: To measure the abdominal subcutaneous fat (SF) and visceral fat (VF) volumes using high-field magnetic resonance imaging (MRI) and to investigate their association with selected anthropometric and biochemical parameters among obese and nonobese apparently healthy participants. METHODS: A cross-sectional study was conducted by recruiting 167 healthy participants. Abdominal scans were acquired at 3T MRI, and the SF and VF were segmented and their volumes were calculated...
December 2016: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/27914637/redo-thoracoabdominal-aortic-aneurysm-repair-a-single-center-experience-over-25%C3%A2-years
#2
Rana O Afifi, Harleen K Sandhu, Amy E Trott, Tom C Nguyen, Charles C Miller, Anthony L Estrera, Hazim J Safi
BACKGROUND: Aortic disease is a lifelong, progressive illness that may require repeated intervention over time. We reviewed our 25-year experience with open redo thoracoabdominal aortic aneurysm (TAAA) and descending thoracic aortic aneurysm (DTAA) repair. Our objectives were to determine patient outcomes after redo repair of DTAA/TAAA and compare them with nonredo repair. We also attempted to identify the risk factors for poor outcome. METHODS: We reviewed all open redo TAAA and DTAA repairs between 1991 and 2014...
November 30, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27897414/a-comparative-study-of-software-programmes-for-cross-sectional-skeletal-muscle-and-adipose-tissue-measurements-on-abdominal-computed-tomography-scans-of-rectal-cancer-patients
#3
Jeroen L A van Vugt, Stef Levolger, Arvind Gharbharan, Marcel Koek, Wiro J Niessen, Jacobus W A Burger, Sten P Willemsen, Ron W F de Bruin, Jan N M IJzermans
BACKGROUND: The association between body composition (e.g. sarcopenia or visceral obesity) and treatment outcomes, such as survival, using single-slice computed tomography (CT)-based measurements has recently been studied in various patient groups. These studies have been conducted with different software programmes, each with their specific characteristics, of which the inter-observer, intra-observer, and inter-software correlation are unknown. Therefore, a comparative study was performed...
November 22, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27858681/the-effect-of-visceral-osteopathic-manual-therapy-applications-on-pain-quality-of-life-and-function-in-patients-with-chronic-nonspecific-low-back-pain
#4
Seval Tamer, Müzeyyen Öz, Özlem Ülger
BACKGROUND: The efficacy of osteopathic manual therapy (OMT) applications on chronic nonspecific low back pain (LBP) has been demonstrated. However, visceral applications, which are an important part of OMT techniques, have not been included in those studies. OBJECTIVE: The study's objective was to determine the effect of OMT including visceral applications on the function and quality of life (QoL) in patients with chronic nonspecific LBP. DESIGN: The study was designed with a simple method of block randomization...
November 11, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27855393/central-obesity-and-liver-iron-content-a-noninvasive-assessment-in-general-population-by-magnetic-resonance-imaging
#5
Amir Reza Radmard, Hossein Poustchi, Amir Pejman Hashemi Taheri, Marjan Gerami Seresht, Payam Mohammadinejad, Ali Yoonessi, Mehrdad Dadgostar, Mohammad Sadegh Rahmanian, Elham Jafari, Atefeh Zeinoddini, Reza Malekzadeh, Shahin Merat
BACKGROUND/AIM: Existing evidence points to an altered status of iron metabolism in obesity. We aimed to investigate whether central obesity is independently associated with estimated liver iron content (liver T2* value) in general population that used the noninvasive assessment method by MRI. METHODS: The study was carried out on 200 subjects randomly selected from the Golestan Cohort Study who underwent abdominal MRI. Quantitative T2* maps of entire cross-sectional area of liver were calculated using a semi-automated software for estimating the levels of iron content...
November 18, 2016: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/27805592/in-vitro-recording-of-mesenteric-afferent-nerve-activity-in-mouse-jejunal-and-colonic-segments
#6
Sara Nullens, Annemie Deiteren, Wen Jiang, Christopher Keating, Hannah Ceuleers, Sven Francque, David Grundy, Joris G De Man, Benedicte Y De Winter
Afferent nerves not only convey information concerning normal physiology, but also signal disturbed homeostasis and pathophysiological processes of the different organ systems from the periphery towards the central nervous system. As such, the increased activity or 'sensitization' of mesenteric afferent nerves has been allocated an important role in the pathophysiology of visceral hypersensitivity and abdominal pain syndromes. Mesenteric afferent nerve activity can be measured in vitro in an isolated intestinal segment that is mounted in a purpose-built organ bath and from which the splanchnic nerve is isolated, allowing researchers to directly assess nerve activity adjacent to the gastrointestinal segment...
October 25, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27802212/contrast-enhanced-ultrasound-to-evaluate-organ-microvascularization-after-operative-versus-endovascular-treatment-of-visceral-artery-aneurysms
#7
Karin Pfister, Piotr M Kasprzak, Ernst M Jung, René Müller-Wille, Walter Wohlgemuth, Reinhard Kopp, Wilma Schierling
PURPOSE: To evaluate the organ microvascularization after operative versus endovascular treatment of visceral artery aneurysms (VAAs) by contrast-enhanced ultrasound (CEUS) and colour-coded duplex sonography (CCDS). METHOD AND MATERIALS: Between April 1995 to January 2016, 168 patients (78 males, 90 females; median age: 62 years) were diagnosed with VAAs at our hospital site. 60/168 patients (36%) fulfilled treatment criteria and had either open (29/60, 48%) or endovascular (31/60, 52%) aneurysm repair...
October 12, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27798440/role-of-visceral-fat-in-colonic-inflammation-from-crohn-s-disease-to-diverticulitis
#8
Anna Paeschke, Ulrike Erben, Lea I Kredel, Anja A Kühl, Britta Siegmund
PURPOSE OF REVIEW: The composition of activated adipose tissue with adipocytes secreting a broad spectrum of immune-modulatory adipokines next to adipose tissue-derived stromal cells and professional immune effector cells in the visceral fat creates a complex network of inflammatory processes shaping local immune responses in the adjacent inflamed intestinal mucosa. RECENT FINDINGS: In Crohn's disease a particular phenomenon called 'creeping fat' can be observed...
October 27, 2016: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/27770788/bioelectrical-impedance-analysis-bia-of-the-association-of-the-japanese-kampo-concept-suidoku-fluid-disturbance-and-the-body-composition-of-women
#9
Aya Murakami, Daisuke Kobayashi, Toshio Kubota, Niina Zukeyama, Haru Mukae, Norihiro Furusyo, Mosaburo Kainuma, Takao Shimazoe
BACKGROUND: In Japanese Kampo medical practice, suidoku (fluid disturbance) is one of the most important concepts for selecting the proper medication. Suidoku is an excessive or uneven distribution of fluid that is indicated by splashing sounds and pitting edema. However, few objective reports about suidoku have been published. Bioelectrical impedance analysis (BIA) uses resistance values obtained from weak electrical currents to estimate body composition, including intracellular and extracellular water and muscle and fat mass...
October 22, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27756955/effect-of-nitrergic-system-on-colonic-motility-in-a-rat-model-of-irritable-bowel-syndrome
#10
Tijen Kaya Temiz, Omer Demir, Fatma Simsek, Yusuf Cem Kaplan, Selen Bahceci, Barıs Karadas, Aslı Celik, Gokhan Koyluoglu
AIM: The aim of this study is to investigate whether nitric oxide (NO)-mediated colonic motility was altered in rat irritable bowel syndrome (IBS) model, using different isoforms of NO-synthase (NOS) inhibitors. MATERIALS AND METHODS: The animal model of IBS-like visceral hypersensitivity was induced by intra-colonic infusion of 0.5% acetic acid (AA) in saline once daily from postnatal days 8 to 21. Control animals received saline instead of AA. Experiments were performed at the end of 8 weeks...
July 2016: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/27752464/primary-pulmonary-glomus-tumor-of-uncertain-malignant-potential-a-case-report-with-literature-review-focusing-on-current-concepts-of-malignancy-grade-estimation
#11
Takashi Oide, Kazuhiro Yasufuku, Kiyoshi Shibuya, Ichiro Yoshino, Yukio Nakatani, Kenzo Hiroshima
We report a 38-year-old woman with a left lung tumor presenting as obstructive pneumonia. Bronchoscopic examination revealed a polypoid tumor filling the left main bronchus. The tumor was partially resected by a snaring procedure for diagnostic purposes. Microscopic examination revealed a submucosal tumor located underneath normal bronchial epithelium. The tumor was composed of sheets of uniform oval to cuboidal cells encompassing numerous blood vessels. Immunohistochemically, the tumor cells exhibited smooth muscle markers, but were negative for neuroendocrine markers...
2016: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/27743433/assessment-of-abdominal-fat-distribution-in-non-alcoholic-fatty-liver-disease-by-magnetic-resonance-imaging-a-population-based-study
#12
Amir Reza Radmard, Mohammad Sadegh Rahmanian, Alireza Abrishami, Ali Yoonessi, Soheil Kooraki, Mehrdad Dadgostar, Amir Pejman Hashemi Taheri, Marjan Gerami Seresht, Hossein Poustchi, Elham Jafari, Reza Malekzadeh, Shahin Merat
BACKGROUND: To investigate the association between non-alcoholic fatty liver disease (NAFLD) and quantitative measures of central adiposity in the general population using a semi-automated method on magnetic resonance imaging (MRI) data. METHODS: Subjects were recruited from Golestan Cohort Study. Two groups of 120 individuals with and without fatty liver were randomly selected based on findings of ultrasound. Non-invasive diagnosis of NAFLD was made by combination of ultrasound and MRI...
October 2016: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/27662190/feasibility-of-mr-based-body-composition-analysis-in-large-scale-population-studies
#13
Janne West, Olof Dahlqvist Leinhard, Thobias Romu, Rory Collins, Steve Garratt, Jimmy D Bell, Magnus Borga, Louise Thomas
INTRODUCTION: Quantitative and accurate measurements of fat and muscle in the body are important for prevention and diagnosis of diseases related to obesity and muscle degeneration. Manually segmenting muscle and fat compartments in MR body-images is laborious and time-consuming, hindering implementation in large cohorts. In the present study, the feasibility and success-rate of a Dixon-based MR scan followed by an intensity-normalised, non-rigid, multi-atlas based segmentation was investigated in a cohort of 3,000 subjects...
2016: PloS One
https://www.readbyqxmd.com/read/27638089/comparison-of-t1-weighted-2d-tse-3d-spgr-and-two-point-3d-dixon-mri-for-automated-segmentation-of-visceral-adipose-tissue-at-3-tesla
#14
Faezeh Fallah, Jürgen Machann, Petros Martirosian, Fabian Bamberg, Fritz Schick, Bin Yang
OBJECTIVES: To evaluate and compare conventional T1-weighted 2D turbo spin echo (TSE), T1-weighted 3D volumetric interpolated breath-hold examination (VIBE), and two-point 3D Dixon-VIBE sequences for automatic segmentation of visceral adipose tissue (VAT) volume at 3 Tesla by measuring and compensating for errors arising from intensity nonuniformity (INU) and partial volume effects (PVE). MATERIALS AND METHODS: The body trunks of 28 volunteers with body mass index values ranging from 18 to 41...
September 16, 2016: Magma
https://www.readbyqxmd.com/read/27610400/abdomen-and-spinal-cord-segmentation-with-augmented-active-shape-models
#15
Zhoubing Xu, Benjamin N Conrad, Rebeccah B Baucom, Seth A Smith, Benjamin K Poulose, Bennett A Landman
Active shape models (ASMs) have been widely used for extracting human anatomies in medical images given their capability for shape regularization of topology preservation. However, sensitivity to model initialization and local correspondence search often undermines their performances, especially around highly variable contexts in computed-tomography (CT) and magnetic resonance (MR) images. In this study, we propose an augmented ASM (AASM) by integrating the multiatlas label fusion (MALF) and level set (LS) techniques into the traditional ASM framework...
July 2016: Journal of Medical Imaging
https://www.readbyqxmd.com/read/27590534/results-of-celiac-trunk-stenting-during-fenestrated-or-branched-aortic-endografting
#16
Hélène Wattez, Teresa Martin-Gonzalez, Benjamin Lopez, Rafaëlle Spear, Rachel E Clough, Adrien Hertault, Jonathan Sobocinski, Stéphan Haulon
BACKGROUND: Endovascular repair of aortic aneurysms involving the visceral segment of the aorta often requires placement of a covered bridging stent in the celiac axis (CA). The median arcuate ligament (MAL) is a fibrous arch that unites the diaphragmatic crura on either side of the aortic hiatus. The ligament may compress and distort the celiac artery and result in difficult cannulation, or stenosis and occlusion of the vessel. This study evaluated the influence of the MAL compression on the technical success and the patency of the celiac artery after branched and fenestrated endovascular aortic repair...
August 30, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27583848/a-rare-case-of-primary-peripheral-epithelial-myoepithelial-carcinoma-of-lung-case-report-and-literature-review
#17
Cheng Shen, Xin Wang, Guowei Che
BACKGROUND: Primary salivary gland-type tumors of lung are rare. Epithelial-myoepithelial carcinoma (EMC) of the lung is a minor salivary gland-type tumor subtype. METHODS: We report a very rare case of EMC located in the peripheral left lower lobe that was diagnosed in a 58-year-old man and this is the first study in which we summarize all the patients with primary peripheral lung EMC concerned with the clinical features. Informed consent was obtained from the patient...
August 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27581075/applying-a-computer-aided-scheme-to-detect-a-new-radiographic-image-marker-for-prediction-of-chemotherapy-outcome
#18
Yunzhi Wang, Yuchen Qiu, Theresa Thai, Kathleen Moore, Hong Liu, Bin Zheng
BACKGROUND: To investigate the feasibility of automated segmentation of visceral and subcutaneous fat areas from computed tomography (CT) images of ovarian cancer patients and applying the computed adiposity-related image features to predict chemotherapy outcome. METHODS: A computerized image processing scheme was developed to segment visceral and subcutaneous fat areas, and compute adiposity-related image features. Then, logistic regression models were applied to analyze association between the scheme-generated assessment scores and progression-free survival (PFS) of patients using a leave-one-case-out cross-validation method and a dataset involving 32 patients...
2016: BMC Medical Imaging
https://www.readbyqxmd.com/read/27572283/imaging-spectrum-of-nonneoplastic-duodenal-diseases
#19
Sitthipong Srisajjakul, Patcharin Prapaisilp, Sirikan Bangchokdee
: The duodenum is a short segment of the bowel that is frequently overlooked on radiologic examination. This unique portion occupies both intraperitoneal and extraperitoneal locations, with proximity to many visceral organs, including pancreas, stomach, aorta, and liver. This close proximity creates a differentiation challenge for the radiologist. Duodenal pathologies are categorized into neoplastic and nonneoplastic conditions. Majority of radiologists are familiar with duodenal neoplasm...
August 6, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27568672/diagnosing-a-rare-case-of-desmoplastic-small-round-cell-tumour-on-liver-biopsy
#20
F F Cheo, W Q Leow
A 50-year-old male of Indian descent presented with jaundice and right hypochondrium pain. Following a computed tomography (CT) scan of the abdomen, a segment 7 liver lesion was visualized, accompanied by extensive peritoneal tumour deposits. An ultrasound guided liver biopsy was performed and histology showed loose nests and sheets of tumour cells with a small blue round cell morphology. The tumour cells showed patchy strong immunopositivity for cytokeratins (AE1/3, CK7, CK19) and synaptophysin, while showing diffuse strong perinuclear positivity for desmin...
August 2016: Malaysian Journal of Pathology
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