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Nian Cai, Weisi Xie, Zhenghang Su, Shanshan Wang, Dong Liang
Recently, the sparsity which is implicit in MR images has been successfully exploited for fast MR imaging with incomplete acquisitions. In this paper, two novel algorithms are proposed to solve the sparse parallel MR imaging problem, which consists of l1 regularization and fidelity terms. The two algorithms combine forward-backward operator splitting and Barzilai-Borwein schemes. Theoretically, the presented algorithms overcome the nondifferentiable property in l1 regularization term. Meanwhile, they are able to treat a general matrix operator that may not be diagonalized by fast Fourier transform and to ensure that a well-conditioned optimization system of equations is simply solved...
2016: Computational and Mathematical Methods in Medicine
Francisco Schlottmann, Romina Reino, Emmanuel E Sadava, Ana Campos Arbulú, Nicolás A Rotholtz
INTRODUCTION: Complicated appendicitis (CA) may be a risk factor for postoperative intra-abdominal abscess formation (IAA). In addition, several publications have shown an increased risk of postoperative collection after laparoscopic appendectomy. Most surgeons prefer to place a drain to collect contaminated abdominal fluid to prevent consequent abscess formation. We aimed to evaluate the utility of placing an intra-abdominal drain in laparoscopic appendectomy for complicated acute appendicitis...
October 12, 2016: International Journal of Surgery
Stephen T Abedon
The concept of bacteriophage multiplicity of infection (MOI) - ratios of phages to bacteria - historically has been less easily applied than many phage workers would prefer or, perhaps, may be aware. Here, toward clarification of the concept, I discuss multiplicity of infection in terms of semantics, history, mathematics, pharmacology, and actual practice. For phage therapy and other biocontrol purposes it is desirable, especially, not to solely employ MOI to describe what phage quantities have been applied during dosing...
July 2016: Bacteriophage
Kirsten F Smit, Daniel Brevoord, Stefan De Hert, Bas A de Mol, Raphaela P Kerindongo, Susan van Dieren, Wolfgang S Schlack, Markus W Hollmann, Nina C Weber, Benedikt Preckel
BACKGROUND: The noble gas helium induces pre- and postconditioning in animals and humans. Volatile anesthetics induce cardioprotection in humans undergoing coronary artery bypass graft (CABG) surgery. We hypothesized that helium induces pre- and postconditioning in CABG-patients, affecting signaling molecules protein kinase C-epsilon (PKC-ε), p38 mitogen activated protein kinase (p38 MAPK), extracellular signal-regulated kinase 1/2 (ERK-1/2) and heat shock protein 27 (HSP-27) within cardiac tissue, and reducing postoperative troponin levels...
October 14, 2016: Journal of Translational Medicine
Pravin Rathi, Pravir Gambhire
Abdomen is involved in 11% of patients with extra-pulmonary tuberculosis; The most common site of involvement is the ileocaecal region, other locations of involvement, in order of descending frequency, are the ascending colon, jejunum, appendix, duodenum, stomach, oesophagus, sigmoid colon, and rectum. Apart from the basic work up, Investigations like CT scan, EUS, Capsule endoscopy, Balloon enteroscopy, Ascitic fluid ADA, TB-PCR, GeneXpert, Laproscopy are being increasingly used to diagnose tuberculosis.Therapy with standard antituberculous drugs is usually highly effective for intestinal TB...
February 2016: Journal of the Association of Physicians of India
Dali Nadida, Ali Amal, Marzouk Ines, Moussa Makram, Manamani Amira, Ben Farhat Leila, Hendaoui Lotfi
PURPOSE: The aim of this work is to explain the clinical features and the imaging findings of primitive epiploic appendagitis in 12 patients. MATERIALS AND METHODS: Twelve patients were examined in 2 University hospitals between January 2011 and June 2016. Their medical charts have been reviewed. Nine patients have undergone enhanced CT examination and only two among them, have had at first an abdominal ultrasound. RESULTS: The age ranged between 36 and 65 years old...
October 6, 2016: International Journal of Surgery Case Reports
Sabine Tejpar, Sebastian Stintzing, Fortunato Ciardiello, Josep Tabernero, Eric Van Cutsem, Frank Beier, Regina Esser, Heinz-Josef Lenz, Volker Heinemann
Importance: Metastatic colorectal cancer (mCRC) is heterogeneous, and primary tumors arising from different regions of the colon are clinically and molecularly distinct. Objective: To examine the prognostic and predictive value of primary tumor location in patients with RAS wild-type (wt) mCRC treated with first-line fluorouracil, leucovorin, and irinotecan (FOLFIRI) plus cetuximab in the Cetuximab Combined With Irinotecan in First-line Therapy for Metastatic Colorectal Cancer (CRYSTAL) trial and FOLFIRI Plus Cetuximab Versus FOLFIRI Plus Bevacizumab as First-Line Treatment For Patients With Metastatic Colorectal Cancer (FIRE-3) trial...
October 10, 2016: JAMA Oncology
Hideki Katagiri, Alan Kawarai Lefor, Tadao Kubota, Ken Mizokami
AIM: To review clinical experience with barium appendicitis at a single institution. METHODS: A retrospective review of patients admitted with a diagnosis of acute appendicitis, from January 1, 2013 to December 31, 2015 was performed. Age, gender, computed tomography (CT) scan findings if available, past history of barium studies, pathology, and the presence of perforation or the development of complications were reviewed. If the CT scan revealed high density material in the appendix, the maximum CT scan radiodensity of the material is measured in Hounsfield units (HU)...
September 27, 2016: World Journal of Gastrointestinal Surgery
Amanda Yang Shen, Aaron Stanes
BACKGROUND: Pain associated with appendiceal endometriosis can mimic other intra-abdominal pathology. The diagnosis is usually obvious during gross inspection of the appendix; however, the absence of classical macroscopic appearances may lead to missed cases in which the patient's pain is misdiagnosed and inappropriately managed. CASE: A 34-year-old woman presented with cyclical right iliac fossa pain and an elevated serum C-reactive protein of 13 mg/L (normal < 5 mg/L)...
October 2016: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
Marija Kocic, Slavisa M Djuricic, Maja Djordjevic, Djordje Savic, Bozica Kecman, Adrijan Sarajlija
Almost any anatomical compartment may be involved in Gaucher disease (GD). Abdominal lymphadenopathy occurred during enzyme replacement therapy in more than a dozen children with GD so far. A fourteen-year-old boy from Serbia developed clinical signs of acute appendicitis six years after the onset of GD type 3 related abdominal lymphadenopathy. Ultrasound examination showed diffuse thickening of the intestinal wall in the ileocoecal region with periappendicular infiltration. An appendectomy was performed four months after conservative treatment with antibiotics...
September 30, 2016: Blood Cells, Molecules & Diseases
Flemming Bjerrum, Jeanett Strandbygaard, Susanne Rosthøj, Teodor Grantcharov, Bent Ottesen, Jette Led Sorensen
BACKGROUND: Laparoscopic appendectomy is a commonly performed surgical procedure, but few training models have been described for it. We examined a virtual reality module for practising a laparoscopic appendectomy. METHODS: A prospective cohort study with the following 3 groups of surgeons (n = 45): novices (0 procedures), intermediates (10-50 procedures), and experienced (>100 procedures). After being introduced to the simulator and 1 familiarization attempt on the procedural module, the participants practiced the module 20 times...
October 4, 2016: Journal of Surgical Education
Annalisa Trama, Rafael Marcos-Gragera, Maria Josè Sánchez Pérez, Jan Maarten van der Zwan, Eva Ardanaz, Christine Bouchardy, Juan Manuel Melchor, Carmen Martinez, Riccardo Capocaccia, Massimo Vicentini, Sabine Siesling, Gemma Gatta
PURPOSE: Rare cancers represent 22% of all tumors in Europe; however, the quality of the data of rare cancers may not be as good as the quality of data for common cancer. The project surveillance of rare cancers in Europe (RARECARE) had, among others, the objective of assessing rare cancer data quality in population-based cancer registries (CRs). Eight rare cancers were considered: mesothelioma, liver angiosarcoma, sarcomas, tumors of oral cavity, CNS tumors, germ cell tumors, leukemia, and malignant digestive endocrine tumors...
October 3, 2016: Tumori
Andrea Fabiani, Massimo Calabrese, Alessandra Filosa, Fabrizio Fioretti, Valentina Maurelli, Michele Scandola, Stefano Noventa, Flavia Tombolini, Francesco Catanzariti, Lucilla Servi, Gabriele Mammana
INTRODUCTION AND OBJECTIVE: Testicular torsion must be diagnosed quickly and accurately. The delay of the diagnosis and the subsequent delay of surgery may lead to loss testicular viability and orchidectomy. Aim of our retrospective evaluation was to define which element should be considered as major support to the clinician in distinguishing spermatic cord torsion from the other diseases mimicking this clinical emergency requiring surgical exploration. MATERIAL AND METHODS: We retrospectively reviewed all clinical and instrumental data of emergency scrotal exploration performed for acute scrotal pain at two different Urological Department in a 10 year period...
October 5, 2016: Archivio Italiano di Urologia, Andrologia
Yuki Imaoka, Toshiyuki Itamoto, Yuji Takakura, Takahisa Suzuki, Satoshi Ikeda, Takashi Urushihara
BACKGROUND: Our previous retrospective study revealed the three preoperative predictors of complicated appendicitis (perforated or gangrenous appendicitis), which are body temperature ≥37.4 °C, C-reactive protein ≥4.7 mg/dl, and fluid collection surrounding the appendix on computed tomography. We reported here an additional prospective study to verify our ability to predict complicated appendicitis using the three preoperative predictors and thus facilitate better informed decisions regarding emergency surgery during night or holiday shifts...
2016: World Journal of Emergency Surgery: WJES
Alice Faure, Rebecca Cooksey, Aurore Bouty, Alan Woodward, John Hutson, Mike O'Brien, Yves Heloury
BACKGROUND: Effective bladder emptying by clean intermittent catheterization for children with severe bladder dysfunction is critical for renal preservation and social integration. Use of a continent catheterizable conduit (CCC) as urethral alternative procedure provides effective bladder drainage. However, it brings a substantive maintenance. METHODS: Retrospective review of the indications and long-term outcomes of 54 patients with a Mitrofanoff procedure in a single center over a 20-year period (1995-2015)...
September 23, 2016: Journal of Pediatric Surgery
Yasuharu Ohno, Tamotsu Fujimoto, Yukari Shibata
Introduction Superb microvascular imaging is a new ultrasound image processing technique that uses advanced clutter suppression to extract flow signals from vessels and which helps us visualize very small vascular structures that were not previously visible without the use of a contrast agent. We herein analyzed the usefulness of superb microvascular imaging in the diagnosis of hepato-gastrointestinal disorders in pediatric patients. Materials and Methods Fifty-six pediatric patients who underwent a total of 81 superb microvascular imaging examinations with an Aplio 300 ultrasound system (Toshiba Medical Systems, Tokyo, Japan) were enrolled in this study...
October 3, 2016: European Journal of Pediatric Surgery
Bikasha Bihary Tripathy
Congenital absence of the vermiform appendix is very rare in human beings with a reported incidence of 1 in 100,000 cases. Here, we report an incidence of a surgeon's dilemma to detect such a rare finding during surgery for a diagnosed case of acute appendicitis.
October 2016: Journal of Indian Association of Pediatric Surgeons
Gaia Cattadori, Piergiuseppe Agostoni, Ugo Corrà, Gianfranco Sinagra, Fabrizio Veglia, Elisabetta Salvioni, Alice Bonomi, Rocco La Gioia, Angela B Scardovi, Alessandro Ferraironi, Michele Emdin, Marco Metra, Andrea Di Lenarda, Giuseppe Limongelli, Rosa Raimondo, Federica Re, Marco Guazzi, Romualdo Belardinelli, Gianfranco Parati, Sergio Caravita, Damiano Magrì, Carlo Lombardi, Maria Frigerio, Fabrizio Oliva, Davide Girola, Alessandro Mezzani, Stefania Farina, Massimo Mapelli, Domenico Scrutinio, Giuseppe Pacileo, Anna Apostolo, AnnaMaria Iorio, Stefania Paolillo, Pasquale Perrone Filardi, Paola Gargiulo, Maurizio Bussotti, Giovanni Marchese, Michele Correale, Roberto Badagliacca, Susanna Sciomer, Pietro Palermo, Mauro Contini, Pantaleo Giannuzzi, Elisa Battaia, Mariantonietta Cicoira, Francesco Clemenza, Chiara Minà, Simone Binno, Claudio Passino, Massimo F Piepoli
BACKGROUND: Anemia is frequent in heart failure (HF), and it is associated with higher mortality. The predictive power of established HF prognostic parameters in anemic HF patients is unknown. METHODS: Clinical, laboratory, echocardiographic and cardiopulmonary-exercise-test (CPET) data were analyzed in 3913 HF patients grouped according to hemoglobin (Hb) values. 248 (6%), 857 (22%), 2160 (55%) and 648 (17%) patients had very low (<11g/dL), low (11-12 for females, 11-13 for males), normal (12-15 for females, 13-15 for males) and high (>15) Hb, respectively...
September 28, 2016: European Journal of Internal Medicine
Alexandra Grosse
Amebiasis is uncommon in developed countries. Several case reports in the literature emphasize that both the presenting symptoms and the radiological findings of colonic amebiasis closely resemble more common conditions, such as idiopathic inflammatory bowel disease and gastro-intestinal malignancy. We describe a unique case of colonic amebiasis (amebomas) coexisting with signet-ring cell carcinoma of the ileocecal valve, the cecum and the appendix. Endoscopically, the ulcerated tumor was indistinguishable from the ulcerations and pseudotumors (amebomas) detected in the ascending colon...
September 28, 2016: World Journal of Gastroenterology: WJG
Cristina Nuccetelli, Rosabianca Trevisi, Ivan Ignjatović, Jelena Dragaš
The present paper reports the results of a study on different types of fly ash from Serbian coal burning power plants and their potential use as a binder in alkali-activated concrete (AAC) depending on their radiological and mechanical properties. Five AAC mixtures with different types of coal burning fly ash and one type of blast furnace slag were designed. Measurements of the activity concentrations of (40)K, (226)Ra and (232)Th were done both on concrete constituents (fly ash, blast furnace slag and aggregate) and on the five solid AAC samples...
September 26, 2016: Journal of Environmental Radioactivity
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