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Utilization segmentation

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https://www.readbyqxmd.com/read/27909643/source-control-and-graft-preservation-using-negative-pressure-wound-therapy-with-antibiotic-instillation-a-case-report
#1
Victoria Gilbert, Timothy Kelly, Robert Grossi
Negative pressure wound therapy (NPWT) is widely used to treat many types of complex wounds, and the advent of the instillation and dwell time (NPWTi-d) technique has enhanced this system with the addition of automated treatment with topical solutions. In the field of vascular surgery, NPWT is utilized to help close wounds over underlying grafts; however keeping these wounds free of infection and avoiding large reoperation when infection occurs remains a challenge. In this case report we present a patient who required acute intervention for limb ischemia, with a large wound created in the groin for anastomosis of a prosthetic graft bypass...
October 31, 2016: Curēus
https://www.readbyqxmd.com/read/27908182/prostate-deformation-from-inflatable-rectal-probe-cover-and-dosimetric-effects-in-prostate-seed-implant-brachytherapy
#2
Jun Lian, Yeqin Shao, Larry D Potter, Ronald C Chen, Jordan A Holmes, Eleanor A Pryser, Jie Shen, Dinggang Shen, Andrew Z Wang
PURPOSE: Prostate brachytherapy is an important treatment technique for patients with localized prostate cancer. An inflatable rectal ultrasound probe cover is frequently utilized during the procedure to adjust for unfavorable prostate position relative to the implant grid. However, the inflated cover causes prostate deformation, which is not accounted for during dosimetric planning. Most of the therapeutic dose is delivered after the procedure when the prostate and surrounding organs-at-risk are less deformed...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27906004/a-quantitative-evidence-base-for-population-health-applying-utilization-based-cluster-analysis-to-segment-a-patient-population
#3
Sabine I Vuik, Erik Mayer, Ara Darzi
BACKGROUND: To improve population health it is crucial to understand the different care needs within a population. Traditional population groups are often based on characteristics such as age or morbidities. However, this does not take into account specific care needs across care settings and tends to focus on high-needs patients only. This paper explores the potential of using utilization-based cluster analysis to segment a general patient population into homogenous groups. METHODS: Administrative datasets covering primary and secondary care were used to construct a database of 300,000 patients, which included socio-demographic variables, morbidities, care utilization, and cost...
November 25, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905028/landmark-guided-diffeomorphic-demons-algorithm-and-its-application-to-automatic-segmentation-of-the-whole-spine-and-pelvis-in-ct-images
#4
Shouhei Hanaoka, Yoshitaka Masutani, Mitsutaka Nemoto, Yukihiro Nomura, Soichiro Miki, Takeharu Yoshikawa, Naoto Hayashi, Kuni Ohtomo, Akinobu Shimizu
PURPOSE: A fully automatic multiatlas-based method for segmentation of the spine and pelvis in a torso CT volume is proposed. A novel landmark-guided diffeomorphic demons algorithm is used to register a given CT image to multiple atlas volumes. This algorithm can utilize both grayscale image information and given landmark coordinate information optimally. METHODS: The segmentation has four steps. Firstly, 170 bony landmarks are detected in the given volume. Using these landmark positions, an atlas selection procedure is performed to reduce the computational cost of the following registration...
November 30, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27904307/hybrid-transvaginal-notes-and-mini-laparoscopic-colectomy-benefit-through-synergy
#5
Jayson M Moloney, Philip S L Gan
BACKGROUND AND OBJECTIVES: Hybrid-natural orifice surgery combines the advantages of traditional transabdominal laparoscopic surgery, while limiting surgical trauma to the abdominal wall. Among various routes of intra-abdominal access, the transvaginal method is most appealing because of its utility and proven safety. We describe a series of 4 colonic resections performed with this approach, combined with minilaparoscopy and needlescopic approaches, and discuss the technical aspects, efficacy, and applicability of this technique...
October 2016: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/27897128/defining-the-limits-of-endoscopic-access-to-internal-auditory-canal
#6
Adam Master, Mickie Hamiter, Maura Cosetti
OBJECTIVE: To quantify surgical access to the internal auditory canal (IAC) using an exclusively endoscopic transcanal approach (EETA) and investigate surgically relevant relationships with neurovascular and osseous landmarks of the temporal bone. MATERIALS AND METHODS: Anatomical dissection of two paired temporal bones and 15 unpaired temporal bones was performed using an exclusively endoscopic approach to IAC. The dissection proceeded until the cerebellopontine angle (CPA) could be accessed...
November 28, 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27896975/computer-aided-image-segmentation-and-classification-for-viable-and-non-viable-tumor-identification-in-osteosarcoma
#7
Harish Babu Arunachalam, Rashika Mishra, Bogdan Armaselu, Ovidiu Daescu, Maria Martinez, Patrick Leavey, Dinesh Rakheja, Kevin Cederberg, Anita Sengupta, Molly Ni'suilleabhain
Osteosarcoma is one of the most common types of bone cancer in children. To gauge the extent of cancer treatment response in the patient after surgical resection, the H&E stained image slides are manually evaluated by pathologists to estimate the percentage of necrosis, a time consuming process prone to observer bias and inaccuracy. Digital image analysis is a potential method to automate this process, thus saving time and providing a more accurate evaluation. The slides are scanned in Aperio Scanscope, converted to digital Whole Slide Images (WSIs) and stored in SVS format...
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27894261/multimarker-approach-for-the-prediction-of-microvascular-obstruction-after-acute-st-segment-elevation-myocardial-infarction-a-prospective-observational-study
#8
Hans-Josef Feistritzer, Sebastian Johannes Reinstadler, Gert Klug, Martin Reindl, Sebastian Wöhrer, Christoph Brenner, Agnes Mayr, Johannes Mair, Bernhard Metzler
BACKGROUND: Presence of microvascular obstruction (MVO) derived from cardiac magnetic resonance (CMR) imaging is among the strongest outcome predictors after ST-segment elevation myocardial infarction (STEMI). We aimed to investigate the comparative predictive values of different biomarkers for the occurrence of MVO in a large cohort of reperfused STEMI patients. METHODS: This study included 128 STEMI patients. CMR imaging was performed within the first week after infarction to assess infarct characteristics, including MVO...
November 28, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27889222/long-term-follow-up-of-composite-bladder-augmentation-incorporating-stomach-in-a-multi-institutional-cohort-of-patients-with-cloacal-exstrophy
#9
J T Casey, K H Chan, Y Hasegawa, T Large, B Judge, M Kaefer, R Misseri, R C Rink, K Ueoka, M P Cain
INTRODUCTION: Composite bladder augmentation, incorporating gastric and bowel segments, has the theoretical advantage of metabolic neutrality while potentially avoiding the morbidities of gastrocystoplasty, such as hematuria-dysuria syndrome. The most common indication for this operation is a paucity of bowel, such as in cloacal exstrophy. Despite several early descriptive studies of this technique, there are no reports, to date, of long-term follow-up in this population. OBJECTIVE: To describe the outcomes of composite bladder augmentation utilizing stomach in a cohort of cloacal exstrophy patients...
October 28, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27887775/bactericidal-dental-nanocomposites-containing-1-2-3-triazolium-functionalized-poss-additive-prepared-through-thiol-ene-click-polymerization
#10
Saeed Beigi Burujeny, Hamid Yeganeh, Mohammad Atai, Hoshyar Gholami, Marzieh Sorayya
OBJECTIVE: Deterioration of mechanical strength for the dental composite containing ionic bactericidal compounds restricts the widespread utilization of this class of useful materials. This problem is originated from the reduction of the intermolecular interaction of polymeric network due to plasticization effect of absorbed water molecules penetrated between the chain segments. The main goal of this study is the synthesis of the highly efficient bactericidal additive with low hydrophilicity and consequently the least adverse effect on the final mechanical strength of the dental composite...
November 22, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27886012/histogram-based-feature-extraction-from-individual-gray-matter-similarity-matrix-for-alzheimer-s-disease-classification
#11
Iman Beheshti, Norihide Maikusa, Hiroshi Matsuda, Hasan Demirel, Gholamreza Anbarjafari
Automatic computer-aided diagnosis (CAD) systems have been widely used in classification of patients who suffer from Alzheimer's disease (AD). This paper presents an automatic CAD system based on histogram feature extraction from single-subject gray matter similarity-matrix for classifying the AD patients from healthy controls (HC) using structural magnetic resonance imaging (MRI) data. The proposed CAD system is composed of five stages. In the first stage, segmentation is employed to perform pre-processing on the MRI images, and segment into gray matter, white matter, and cerebrospinal fluid using the voxel-based morphometric toolbox procedure...
November 19, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27885548/health-related-quality-of-life-in-long-term-survivors-of-acute-lymphoblastic-leukemia-in-childhood-and-adolescence
#12
T Nayiager, L Anderson, A Cranston, U Athale, R D Barr
PURPOSE: Children with acute lymphoblastic leukemia (ALL), the commonest form of cancer in this age group, suffer considerable morbidity during treatment, with the majority returning to good health soon after therapy has been completed, as reflected in health-related quality of life (HRQL). However, survivors are at risk of many adverse health outcomes later, including obesity, measured by body mass index (BMI), that is compounded by limited physical activity. This study examined the HRQL of long-term survivors of ALL and its relationship to BMI and physical activity...
November 24, 2016: Quality of Life Research
https://www.readbyqxmd.com/read/27885540/automatic-abdominal-multi-organ-segmentation-using-deep-convolutional-neural-network-and-time-implicit-level-sets
#13
Peijun Hu, Fa Wu, Jialin Peng, Yuanyuan Bao, Feng Chen, Dexing Kong
PURPOSE: Multi-organ segmentation from CT images is an essential step for computer-aided diagnosis and surgery planning. However, manual delineation of the organs by radiologists is tedious, time-consuming and poorly reproducible. Therefore, we propose a fully automatic method for the segmentation of multiple organs from three-dimensional abdominal CT images. METHODS: The proposed method employs deep fully convolutional neural networks (CNNs) for organ detection and segmentation, which is further refined by a time-implicit multi-phase evolution method...
November 24, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27881063/membrane-bioreactors-for-pharmaceutical-applications-optically-pure-enantiomers-production
#14
Emma Piacentini, Rosalinda Mazzei, Lidietta Giorno
In biological systems, recognition at molecular level is governed by chiral interactions. Therefore, optical isomers have very different effect in natural systems. For example, one can have beneficial effect while the other can be very harmful. For these reasons, chiral drugs nowadays are mainly admitted in the optically pure form. Given these requirements, it is clear why demand for chiral drugs has grown dramatically and the single-enantiomer drug segment has become an important part of the overall pharmaceutical market...
November 23, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27878929/ambulatory-glucose-profile-analysis-of-the-juvenile-diabetes-research-foundation-continuous-glucose-monitoring-dataset-applications-to-the-pediatric-diabetes-population
#15
Gregory P Forlenza, Laura L Pyle, David M Maahs, Timothy C Dunn
BACKGROUND: Increased continuous glucose monitor (CGM) use presents both the benefit and burden of increased data for clinicians to rapidly analyze. The ambulatory glucose profile (AGP) is an evolving a universal software report for CGM data analysis. OBJECTIVES/HYPOTHESES: We utilized the Juvenile Diabetes Research Foundation-CGM dataset to evaluate the AGP across a broad spectrum of patients to show how AGP can be used clinically to assist with CGM-related decision making...
November 23, 2016: Pediatric Diabetes
https://www.readbyqxmd.com/read/27876066/in-vivo-cardiovascular-magnetic-resonance-of-2d-vessel-wall-diffusion-anisotropy-in-carotid-arteries
#16
Peter Opriessnig, Harald Mangge, Rudolf Stollberger, Hannes Deutschmann, Gernot Reishofer
BACKGROUND: Diffusion weighted (DW) cardiovascular magnetic resonance (CMR) has shown great potential to discriminate between healthy and diseased vessel tissue by evaluating the apparent diffusion coefficient (ADC) along the arterial axis. Recently, ex vivo studies on porcine arteries utilizing diffusion tensor imaging (DTI) revealed a circumferential fiber orientation rather than an organization in axial direction, suggesting dominant diffusion perpendicular to the slice direction. In the present study, we propose a method to access tangential and radial diffusion of carotids in vivo by utilizing a pulse sequence that enables high resolution DW imaging in combination with a two-dimensional (2D) diffusion gradient direction sampling scheme perpendicular to the longitudinal axis of the artery...
November 23, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27875209/jacobi-fiber-surfaces-for-bivariate-reeb-space-computation
#17
Julien Tierny, Hamish Carr
This paper presents an efficient algorithm for the computation of the Reeb space of an input bivariate piecewise linear scalar function f defined on a tetrahedral mesh. By extending and generalizing algorithmic concepts from the univariate case to the bivariate one, we report the first practical, output-sensitive algorithm for the exact computation of such a Reeb space. The algorithm starts by identifying the Jacobi set of f, the bivariate analogs of critical points in the univariate case. Next, the Reeb space is computed by segmenting the input mesh along the new notion of Jacobi Fiber Surfaces, the bivariate analog of critical contours in the univariate case...
January 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27871000/comparison-of-atlas-based-techniques-for-whole-body-bone-segmentation
#18
Hossein Arabi, Habib Zaidi
We evaluate the accuracy of whole-body bone extraction from whole-body MR images using a number of atlas-based segmentation methods. The motivation behind this work is to find the most promising approach for the purpose of MRI-guided derivation of PET attenuation maps in whole-body PET/MRI. To this end, a variety of atlas-based segmentation strategies commonly used in medical image segmentation and pseudo-CT generation were implemented and evaluated in terms of whole-body bone segmentation accuracy. Bone segmentation was performed on 23 whole-body CT/MR image pairs via leave-one-out cross validation procedure...
November 12, 2016: Medical Image Analysis
https://www.readbyqxmd.com/read/27870822/comparison-of-total-lung-capacity-determined-by-plethysmography-with-computed-tomographic-segmentation-using-caliper
#19
Andrew J Matsumoto, Brian J Bartholmai, Mark E Wylam
PURPOSE: Traditionally, determination of total lung capacity (TLC) by plethysmography (TLCpleth) has been important in the diagnosis of lung diseases. Alternatively, data acquired from computerized tomography (CT) can be utilized to calculate a measure of TLC (TLCCT). The clinical utility of TLCCT is not certain. We sought to determine, in a clinical setting, whether TLCCT correlates with TLCpleth across a range of lung diseases and scanning techniques. In addition, we determined whether TLCCT affects the interpretation of pulmonary function tests...
November 18, 2016: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/27867548/detection-of-salivary-aspiration-using-radionuclide-salivagram-spect-ct-in-patients-with-copd-exacerbation-a-preliminary-study
#20
Peng Hou, Huaifu Deng, Zhida Wu, Haiping Liu, Ni Liu, Zeguang Zheng, Ping Chen
BACKGROUND: The aim of this prospective study was to assess the utility of radionuclide salivagram for detecting salivary aspiration in AECOPD patients and to evaluate the adding value of SPECT/CT to planar imaging. METHODS: 52 consecutive AECOPD patients underwent radionuclide salivagram SPECT/CT and water swallow test between April 2012 and March 2014. All images were interpreted independently by two experienced nuclear medicine physicians. Final diagnosis was made by consensus of two readers...
October 2016: Journal of Thoracic Disease
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