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Visceral segmentation

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https://www.readbyqxmd.com/read/29444580/-our-experience-with-left-sided-retroperitoneal-approach-to-resection-of-abdominal-aortic-aneurysm
#1
B Čertík, V Třeška, J Moláček, M Čechura, R Šulc, K Houdek
INTRODUCTION: At most vascular surgery departments, transperitoneal approach predominates in resections of the aortic aneurysms. For difficult reconstructions of the aorta in the visceral segment, a left flank retroperitoneal approach is used most frequently. METHOD: The authors retrospectively evaluate the left retroperitoneal approach in the management of abdominal aortic aneurysms during a 10-year period. From the total number of 445 operated patients, the left-sided retroperitoneal approach was used in 23 cases...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29432979/a-novel-multi-atlas-strategy-with-dense-deformation-field-reconstruction-for-abdominal-and-thoracic-multi-organ-segmentation-from-computed-tomography
#2
Bruno Oliveira, Sandro Queirós, Pedro Morais, Helena R Torres, João Gomes-Fonseca, Jaime C Fonseca, João L Vilaça
Anatomical evaluation of multiple abdominal and thoracic organs is generally performed with computed tomography images. Owing to the large field-of-view of these images, automatic segmentation strategies are typically required, facilitating the clinical evaluation. Multi-atlas segmentation (MAS) strategies have been widely used with this process, requiring multiple alignments between the target image and the set of known datasets, and subsequently fusing the alignment results to obtain the final segmentation...
February 2, 2018: Medical Image Analysis
https://www.readbyqxmd.com/read/29349408/infolding-of-fenestrated-endovascular-stent-graft
#3
Jason G E Zelt, Prasad Jetty, Adnan Hadziomerovic, Sudhir Nagpal
We report a case of infolding of a fenestrated stent graft involving the visceral vessel segment after a juxtarenal abdominal aorta aneurysm repair. The patient remains free of any significant endoleak, and the aortic sac has shown regression. The patient remains asymptomatic, with no abdominal pain, with normal renal function, and without ischemic limb complications. We hypothesize that significant graft oversizing (20%-30%) with asymmetric engineering of the diameter-reducing ties may have contributed to the infolding...
September 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29327566/upper-extremity-access-options-for-complex-endovascular-aortic-interventions
#4
Kedar S Lavingia, Anahita Dua, Jordan R Stern
The advancement of endovascular therapy has led to minimally invasive solutions to increasingly complex aortic pathology, including thoracoabdominal aneurysms and those involving the visceral segment. Upper extremity access is beneficial in a variety of these complex interventions, and may be absolutely required for certain procedures such as placement of parallel chimney grafts. Traditionally, the brachial artery has been the primary access site on the arm, using either a percutaneous or open approach. Brachial access is safe and effective, and remains suitable for the majority of clinical situations...
January 9, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29315369/patency-of-branch-vessels-reimplanted-during-thoraco-abdominal-aortic-replacement-implications-for-the-surgical-technique
#5
Sang Yoon Kim, Suryeun Chung, Dong Jung Kim, Jun Sung Kim, Cheong Lim, Kay-Hyun Park
OBJECTIVES: Reimplantation of branch vessels is an important component of thoraco-abdominal aortic aneurysm repair. The goal of this study was to assess the anatomical results of branch vessel reimplantation, which have rarely been investigated. METHODS: Among 168 patients who underwent computed tomography after thoraco-abdominal aortic aneurysm repair, the technique of branch vessel reimplantation and determination of their patency were investigated. Late computed tomographic images were available for 81 patients (mean interval 55...
January 5, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29310649/multi-parametric-muscle-and-fat-correlation-of-computed-tomography-parameters-to-outcomes-in-a-total-hip-arthroplasty-population
#6
Michael A Heffler, Ryan Barlow, Yin Xi, Daichi Hayashi, Hayden Box, Michael Huo, Avneesh Chhabra
BACKGROUND: Cross-sectional imaging is not currently used in planning Total Hip Arthroplasty (THA). The aim of our study is to determine correlations between CT parameters and outcomes following THA. METHODS: A prospective registry of patients who underwent total joint arthroplasty was reviewed for patients who: (1) underwent THA, (2) had a CT between 1 year before and 6 months after surgery, and (3) completed perioperative WOMAC and Harris Hip Score (HHS) questionnaires...
January 8, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29205485/combination-of-increased-visceral-fat-and-long-segment-involvement-development-and-validation-of-an-updated-imaging-marker-for-differentiating-crohn-s-disease-from-intestinal-tuberculosis
#7
Saurabh Kedia, K S Madhusudhan, Raju Sharma, Sawan Bopanna, Dawesh P Yadav, Sandeep Goyal, Saransh Jain, Prasenjit Das, Siddhartha Dattagupta, Govind Makharia, Vineet Ahuja
BACKGROUND: Computed tomographic(CT) features(long segment, ileocaecal area involvement and lymph nodes>1cm) have demonstrated good specificity but poor sensitivity, while visceral to subcutaneous fat ratio on CT(VF/SC>0.63) has moderate sensitivity and specificity in differentiating Crohn's disease(CD) and intestinal tuberculosis(ITB). AIM: To develop and validate an updated model incorporating CT features and VF/SC to improve the diagnostic accuracy of imaging in differentiating CD/ITB...
December 4, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29197607/inflammatory-response-modulation-through-a-ppar%C3%AE-agonist-during-surgically-induced-visceral-ischemia-in-an-animal-model
#8
Bianca Pane, Valerio Gazzola, Giovanni Spinella, Paola Bagnato, Federica Grillo, Valerio Gaetano Vellone, Domenico Palombo
BACKGROUND: Ischemia / reperfusion (I/R) injury represents one of the most severe complications in vascular surgery where cross-clamping of the aorta and subsequent visceral ischemia are a recurrent issue. The literature describes a family of nuclear receptors, i.e., peroxisome-proliferator activated receptors (PPARs), in particular PPARγ isoform, which are important modulators of vascular inflammation resulting from I/R injury. The aim of our study is to evaluate how PPARγ agonist administration could reduce local and systemic inflammatory response after I/R injury during aortic supraceliac clamping in animal model...
November 29, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29179706/intralobar-pulmonary-sequestration-expanding-toward-the-contralateral-thorax-two-case-reports
#9
Hizuru Amano, Jun Fujishiro, Akinari Hinoki, Hiroo Uchida
BACKGROUND: Intralobar pulmonary sequestration (ILS) is defined as a portion of parenchyma that is contained within the normal pleural investment of the lung but not connected to the tracheobronchial tree, and supplied by anomalous systemic arteries. As ILS is enveloped within the lobe of the normal lung, it is extremely rare for ILS to invade into the mediastinum. We report two atypical cases of infants with ILS expanded toward the posterior mediastinum and contralateral thorax through the pulmonary ligament...
November 28, 2017: BMC Surgery
https://www.readbyqxmd.com/read/29160143/some-autonomic-deficits-of-acute-or-chronic-cervical-spinal-contusion-reversed-by-interim-brainstem-stimulation
#10
Alberto A Vitores, Stephanie S Sloley, Catalina Martinez, Melissa M Carballosa-Gautam, Ian D Hentall
Prolonged electrical stimulation of the hindbrain's nucleus raphe magnus (NRM) or its major midbrain input region, the periaqueductal gray (PAG), was previously found in rats to promote recovery from sensory-motor and histological deficits of acute thoracic spinal cord injury (SCI). Here, some visceral deficits of acute and chronic midline cervical (C5) contusion are similarly examined. Cranially implanted wireless stimulators delivered intermittent 8 Hz, 30-70 µA cathodal pulse trains to a brainstem microelectrode...
November 21, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29143090/pattern-of-lower-intestinal-ostomies-in-a-low-income-country-case-of-southeast-of-niger-republic
#11
Harissou Adamou, Oumarou Habou, Ibrahim Amadou Magagi, Ousseini Adakal, Amadou Magagi, Maazou Halidou, Rachid Sani
BACKGROUND: Intestinal ostomies are common surgical procedures performed in visceral surgery as part of management for several gastrointestinal diseases. This study aims to report the socio-demographic characteristics, indications and prognosis of intestinal ostomies in low-income country. METHODS: This was a 4-year retrospective study (January 2013 to December 2016) at Zinder National Hospital (Niger). All patients with a digestive ostomy on an ileum or colic segment were included in the study...
November 15, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/29139618/beyond-sarcopenia-characterization-and-integration-of-skeletal-muscle-quantity-and-radiodensity-in-a-curable-breast-cancer-population
#12
Marc S Weinberg, Shlomit S Shachar, Hyman B Muss, Allison M Deal, Karteek Popuri, Hyeon Yu, Kirsten A Nyrop, Shani M Alston, Grant R Williams
Skeletal muscle loss, commonly known as sarcopenia, is highly prevalent and prognostic of adverse outcomes in oncology. However, there is limited information on adults with early breast cancer and examination of other skeletal muscle indices, despite the potential prognostic importance. This study characterizes and examines age-related changes in body composition of adults with early breast cancer and describes the creation of a novel integrated muscle measure. Female patients diagnosed with stage I-III breast cancer with abdominal computerized tomography (CT) scans within 12 weeks from diagnosis were identified from local tumor registry (N = 241)...
November 15, 2017: Breast Journal
https://www.readbyqxmd.com/read/29121940/plasma-irisin-is-elevated-in-type-2-diabetes-and-is-associated-with-increased-e-selectin-levels
#13
Karan S Rana, Chathyan Pararasa, Islam Afzal, David A Nagel, Eric J Hill, Clifford J Bailey, Helen R Griffiths, Ioannis Kyrou, Harpal S Randeva, Srikanth Bellary, James E Brown
BACKGROUND: Irisin is a hormone released mainly from skeletal muscle after exercise which increases adipose tissue energy expenditure. Adipocytes can also release irisin after exercise, acting as a local adipokine to induce white adipose tissue to take on a brown adipose tissue-like phenotype, suggesting that irisin and its receptor may represent a novel molecular target for the treatment of obesity and obesity-related diabetes. Previous reports provide conflicting evidence regarding circulating irisin levels in patients with type 2 diabetes (T2DM)...
November 9, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29097335/isolated-transverse-process-spinal-fractures-increase-the-likelihood-of-incurring-visceral-and-pelvic-injuries-a-retrospective-review-at-a-level-1-trauma-center
#14
Lucas R Philipp, Jason Boulter, Christopher Deibert, Faiz U Ahmad
BACKGROUND: Although isolated transverse process fractures (ITPF) do not confer any inherent risk of compromised spinal stability, there is growing interest in their overall prognostic significance. As a proxy for localized or directional forces in high energy traumatic mechanisms, ITPF may serve as an indicator for the presence of other coexisting traumatic injuries. Specific injuries may be predicted by the presence of ITPF at specific spinal levels, but few studies have examined this in depth and may not account for confounding variables...
October 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29078662/how-to-demarcate-intersegmental-plane-with-resected-segments-inflation-method-using-the-slip-knot-technique-in-thoracoscopic-anatomic-segmentectomy
#15
Makoto Endoh, Hiroyuki Oizumi, Hirohisa Kato, Jun Suzuki, Hikaru Watarai, Akira Hamada, Katsuyuki Suzuki, Satoshi Shiono
Intersegmental demarcation line on the surface of the visceral pleura could not be found at thoracoscopic findings. The resected segments inflation (RSI) method has been reported as a useful technique for visualizing the intersegmental demarcation line during segmentectomy. Thoracoscopic anatomic segmentectomy is performed as follows: firstly, the pulmonary vein and artery of the segment planned for resection are dissected from the hilum in order to isolate the segmental bronchus located behind the pulmonary artery...
2017: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29057349/clinical-evaluation-of-microendoscopy-assisted-extreme-lateral-interbody-fusion
#16
Tomohide Segawa, Hirohiko Inanami, Hisashi Koga
BACKGROUND: Extreme lateral interbody fusion (XLIF) has rapidly become a popular operative procedure for lumbar canal stenosis and scoliosis. This approach provides direct access to the lateral aspect of the disc with minimal disruption of spinal structures, including ligaments and muscles. However, it involves risk of injuries to the lumbar nerve plexus, segmental artery and intestinal tract because of the limited surgical field. This study aimed to clarify the benefit of using a microendoscope to prevent these injuries...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29053705/vagus-nerve-stimulation-in-pregnant-rats-and-effects-on-inflammatory-markers-in-the-brainstem-of-neonates
#17
Allison Judkins, Rhaya L Johnson, Samuel T Murray, Steven M Yellon, Christopher G Wilson
BackgroundVagus nerve stimulation (VNS) is an Food and Drug Administration-approved method delivering electrical impulses for treatment of depression and epilepsy in adults. The vagus nerve innervates the majority of visceral organs and cervix, but potential impacts of VNS on the progress of pregnancy and the fetus are not well studied.MethodsWe tested the hypothesis that VNS in pregnant dams does not induce inflammatory changes in the cardio-respiratory control regions of the pups' brainstem, potentially impacting the morbidity and mortality of offspring...
November 22, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29026365/incidental-finding-of-bronchopulmonary-sequestration-in-a-64-year-old-female
#18
Pichapong Tunsupon, Ayesha Arshad, Sumit Patel, M Jeffery Mador
BACKGROUND: Bronchopulmonary sequestration is a congenital abnormality of the primitive foregut. In adults, the typical age at presentation is 20-25 years. CASE REPORT: A 64-year-old female was referred for evaluation of an 8 × 6-cm right lower lobe cystic lesion. Her medical history was significant for recurrent right lower lobe pneumonia requiring multiple hospitalizations. Her physical examination was significant for crackles at the right lung base. Computed tomography (CT) of the chest with contrast showed cystic changes with thickened septation of the medial segment of the right lower lobe lacking distinct visceral pleura and with arterial supply from the anomalous branch of the thoracic aorta arising near the celiac trunk...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/29021750/cough-anal-reflex-may-be-the-expression-of-a-pre-programmed-postural-action
#19
Paolo Cavallari, Francesco Bolzoni, Roberto Esposti, Carlo Bruttini
When coughing, an involuntary contraction of the external anal sphincter occurs, in order to prevent unwanted leakages or sagging of the pelvis muscular wall. Literature originally described such cough-anal response as a reflex elicited by cough, therefore identifying a precise cause-effect relationship. However, recent studies report that the anal contraction actually precedes the rise in abdominal pressure during cough expiratory effort, so that the sphincter activity should be pre-programmed. In recent years, an important family of pre-programmed muscle activities has been well documented to precede voluntary movements: these anticipatory actions play a fundamental role in whole body and segmental postural control, hence they are referred to as anticipatory postural adjustments (APAs)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29017799/automated-segmentation-of-abdominal-subcutaneous-adipose-tissue-and-visceral-adipose-tissue-in-obese-adolescent-in-mri
#20
Steve C N Hui, Teng Zhang, Lin Shi, Defeng Wang, Chei-Bing Ip, Winnie C W Chu
PURPOSE: To develop a reliable and reproducible automatic technique to segment and measure SAT and VAT based on MRI. MATERIALS AND METHODS: Chemical-shift water-fat MRI were taken on twelve obese adolescents (mean age: 16.1±0.6, BMI: 31.3±2.3) recruited under the health monitoring program. The segmentation applied a spoke template created using Midpoint Circle algorithm followed by Bresenham's Line algorithm to detect narrow connecting regions between subcutaneous and visceral adipose tissues...
October 7, 2017: Magnetic Resonance Imaging
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