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Atsushi Tsuruta, Jo Tashiro, Toshimasa Ishii, Yasuo Oka, Asami Suzuki, Hiroka Kondo, Shigeki Yamaguchi
OBJECTIVE: Anastomotic leakage after laparoscopic low anterior resection in male rectal cancer patients with a narrow pelvis cannot be easily resolved. The objective of this study is to assess numerical information of narrow pelvis and to determine whether prediction of morbidity can be possible. METHODS: Retrospective medical record review was performed. From July 2007 to January 2013, 43 consecutive male patients with low rectal cancer who underwent laparoscopic low anterior resection were divided into the anastomotic leakage-negative group and anastomotic leakage-positive group...
January 13, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
Yutaka Goryo, Teruyoshi Kume, Yusuke Kobayashi, Hiroshi Okamoto, Ai Kawamura, Kenzo Fukuhara, Terumasa Koyama, Ryotaro Yamada, Koichiro Imai, Yoji Neishi, Shiro Uemura
A 68-year-old female with acute coronary syndrome was transferred to our hospital. Emergency coronary angiography showed 90% stenosis with severe calcification in the proximal right coronary artery (RCA). Intravascular ultrasound (IVUS) images were obtained and showed circumferential heavy calcification without any evidence of plaque rupture. Optical frequency domain imaging (OFDI) images were obtained in the RCA lesion 3 days after the initial coronary angiography. A cavity of plaque rupture in the calcified plaque by using OFDI was observed in the lesion, which could not be recognized by IVUS...
January 11, 2017: International Heart Journal
J Schluep
Alpine transhumance and summer grazing of animals on both sides of the French-Swiss border has a long tradition. The Bernese authorities first regulated the movement of animals across the French border in the 18th century due to outbreaks of epidemics. At that time the importation of cattle from the "Franche-Comté" was forbidden, but grazing on the French side of the border remained allowed. The 1912 agreement, relating to grazing on both sides of the border, was used for decades as a guideline to ensure the open communication and close cooperation of the veterinary and customs authorities of both countries with regard to border traffic...
January 2017: Schweizer Archiv Für Tierheilkunde
C Finley, J Dave
PURPOSE: To evaluate implementation of AAPM TG-150's draft recommendations via a parameter study for testing the performance of digital image receptors. METHODS: Flat field images were acquired from 9 calibrated digital image receptors associated with 9 new portable digital radiography systems (Carestream Health, Inc.) based on the draft recommendations and manufacturer-specified calibration conditions (set of 4 images at input detector air kerma ranging from 1 to 25 µGy)...
June 2016: Medical Physics
F Kalantari, J Wang
PURPOSE: 4D-PET imaging has been proposed as a potential solution to the respiratory motion effect in thoracic region. CT-based attenuation correction (AC) is an essential step toward quantitative imaging for PET. However, due to the temporal difference of 4D-PET and a single breath-hold CT, motion artifacts are observed in the attenuation-corrected PET images that can lead to error in tumor shape and uptake. We introduce a practical method for aligning single-phase CT to all other 4D-PET phases using a penalized non-rigid demons registration...
June 2016: Medical Physics
M Mulvey, S Muhyadeen, U Sinha
PURPOSE: Positive patient outcomes with the use of aggressive concurrent chemoradiotherapy have been shown for classical and mesenchymal glioblastoma multiformae (GBM) subtypes, while not having the same positive effect for patients with neural and proneural subtypes. Quantitative MR Imaging features from multimodal MRI have been recently explored for GBM subtype classification with some promising results. We have integrated 3D textural and moment invariant features to investigate if these will strengthen the association between glioblastoma MR image features and genomic markers...
June 2016: Medical Physics
M Guerra, G Jozsef
PURPOSE: The use of specialized patient set-up devices in radiotherapy, such as prone breast boards, may have unwanted dosimetric effects. The goal of this study was to evaluate the effect of a clinically used prone breast board on skin dose due to buildup. METHODS: GafChromic film (EBT3) was used for dose measurements on the surface of a solid water phantom shaped to mimic the curvature of the breast. We investigated two setup scenarios: the medial field border placed at the medial edge of the board and 1 cm contralaterally from that edge...
June 2016: Medical Physics
Enver Arpaci, Serdar Altun, Nilgün Markal Ertas, Ahmet Cagri Uysal, Emre Inozu
BACKGROUND: Most skin defects that require reconstruction with a local skin flap have a circular- or oval-shaped pattern. The majority of the skin flaps are planned in an angled shape. Therefore, it may be necessary to modify the shape of the defect or the distal flap border to minimize tissue distortion. We have designed a circular-shaped advancement flap to be compatible with the circular defect. METHODS: Eighteen cases of reconstruction of skin defects in the face, chest wall, hand and buttock area were performed using the omega advancement flap between 2010 and 2014...
December 30, 2016: Aesthetic Plastic Surgery
E Thomas Danielsen, E Michael Danielsen
Chitosan is a polycationic polysaccharide consisting of β-(1-4)-linked glucosamine units and due to its mucoadhesive properties, chemical derivatives of chitosan are potential candidates as enhancers for transmucosal drug delivery. Recently, glycol chitosan (GC), a soluble derivative of chitosan, was shown to bind specifically to lipid raft domains in model bilayers. The small intestinal brush border membrane has a unique lipid raft composition with high amounts of glycolipids cross-linked by lectins, and the aim of the present work therefore was to study the interaction of FITC-conjugated GC (FITC-GC) with the small intestinal epithelium...
December 27, 2016: Biochimica et Biophysica Acta
Hyeongseok Kim, Taewon Lee, Joonpyo Hong, Sohail Sabir, Jung-Ryun Lee, Young Wook Choi, Hak Hee Kim, Eun Young Chae, Seungryong Cho
PURPOSE: Nonlinear pre-reconstruction processing of the projection data in computed tomography (CT) where accurate recovery of the CT numbers is important for diagnosis is usually discouraged, for such a processing would violate the physics of image formation in CT. However, one can devise a pre-processing step to enhance detectability of lesions in digital breast tomosynthesis (DBT) where accurate recovery of the CT numbers is fundamentally impossible due to the incompleteness of the scanned data...
December 29, 2016: Medical Physics
Hongyang Pi, David E Kurlander, Bahman Guyuron
BACKGROUND: Smiling involves dynamic movements that include nasal tip descent and upper lip ascent. The effect of rhinoplasty on upper lip position is poorly described. METHODS: One hundred charts were reviewed in reverse chronologic order. Inclusion criteria were receiving one of the rhinoplasty maneuvers of interest, at least 6 months of follow-up, and pre- and postoperative photographs by a professional medical photographer with matching maximum smile extent and size...
December 28, 2016: Aesthetic Plastic Surgery
Joshua D Pratt, Scott B Stevenson, Harold E Bedell
PURPOSE: In this experiment, we tested whether perceptually delineating the scotoma location and border with a gaze contingent polygon overlay improves reading speed and reading eye movements in patients with bilateral central scotomas. METHODS: Eight patients with age-related macular degeneration and bilateral central scotomas read aloud MNRead style sentences with their preferred eye. Eye movement signals from an EyeLink II eyetracker were used to create a gaze contingent display in which a polygon overlay delineating the area of the patient's scotoma was superimposed on the text during 18 of the 42 trials...
December 27, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
S Palmucci, M Piccoli, S Piana, P V Foti, R O A Siverino, L A Mauro, P Milone, G C Ettorre
OBJECTIVES: To compare Apparent Diffusion Coefficient (ADC) measurements in rectal neoplastic lesions before and after lumen distension obtained with sonography transmission gel. METHODS: From January 2014 to July 2016, 25 patients (average age 63.7, range 41-85, 18 males) were studied for pre-treatment rectal cancer staging using a 1.5T MRI. Diffusion MRI was obtained using echo-planar imaging with b=800 value; all patients were studied acquiring diffusion sequences with and without rectal lumen distension obtained using sonography transmission gel...
January 2017: European Journal of Radiology
Khaled Boobés, Robert M Rosa, Daniel Batlle
Ogilvie's syndrome, or acute colonic pseudo-obstruction, is characterized by massive dilation of the colon without mechanical obstruction. Water and electrolytes often can be sequestered in the dilated intestinal loops resulting in profuse and watery diarrhea as well as hypokalemia. We report an anuric, end-stage renal disease (ESRD) patient undergoing peritoneal dialysis (PD) who developed acute colonic pseudo-obstruction causing a prolonged hospitalization. He also developed severe hypokalemia with a serum potassium (K+) as low as 2...
December 27, 2016: Clinical Nephrology
Yu-Ri Heo, Hee-Jung Kim, Mee-Kyoung Son, Chae-Heon Chung
PURPOSE: The aim of this study was to analyze the shapes of lingual polished surfaces in lower complete dentures formed by polished surface impressions and to provide reference data for use when manufacturing edentulous trays and lower complete dentures. MATERIALS AND METHODS: Twenty-six patients with mandibular edentulism were studied. After lower wax dentures were fabricated, wax was removed from the lingual side of the wax denture and a lingual polished surface impression was obtained with tissue conditioner...
December 2016: Journal of Advanced Prosthodontics
Clément Jailin, Jean Yves Buffière, François Hild, Martin Poncelet, Stéphane Roux
Seeking for quantitative tomographic images, it is of utmost importance to limit reconstruction artifacts. Detector imperfections, inhomogeneity of the incident beam, as classically observed in synchrotron beamlines, and their variations in time are a major cause of reconstruction bias such as `ring artifacts'. The present study aims at proposing a faithful estimate of the incident beam local intensity for each acquired projection during a scan, without revisiting the process of data acquisition itself. Actual flat-fields (acquired without specimen in the beam) and sinogram borders (when the specimen is present), which are not masked during the scan, are exploited to construct a suited instantaneous detector-wide flat-field...
January 1, 2017: Journal of Synchrotron Radiation
Wan Yi Wong, Siska Bjørn, Jennie Maria Christin Strid, Jens Børglum, Thomas Fichtner Bendtsen
BACKGROUND AND OBJECTIVES: The precise location of the adductor canal remains controversial among anesthesiologists. In numerous studies of the analgesic effect of the so-called adductor canal block for total knee arthroplasty, the needle insertion point has been the midpoint of the thigh, determined as the midpoint between the anterior superior iliac spine and base of patella. "Adductor canal block" may be a misnomer for an approach that is actually an injection into the femoral triangle, a "femoral triangle block...
December 19, 2016: Regional Anesthesia and Pain Medicine
Lucia Brum-Soares, Juan-Carlos Cubides, Iris Burgos, Carlota Monroy, Leticia Castillo, Selene González, Pedro Albajar Viñas, Pedro Pablo Palma Urrutia
INTRODUCTION: Geographical, epidemiological, and environmental differences associated with therapeutic response to Chagas etiological treatment have been previously discussed. This study describes high seroconversion rates 72 months after benznidazole treatment in patients under 16 years from a project implemented by Doctors without Borders in Guatemala. METHODS: An enzyme-linked immunosorbent assay was used to detect Trypanosoma cruzi IgG antibodies in capillary blood samples from patients 72 months after treatment...
November 2016: Revista da Sociedade Brasileira de Medicina Tropical
Jeroen Van Dessel, Laura Ferreira Pinheiro Nicolielo, Yan Huang, Pieter Slagmolen, Constantinus Politis, Ivo Lambrichts, Reinhilde Jacobs
PURPOSE: To determine the accuracy of the latest cone beam computed tomography (CBCT) machines in comparison to multi-slice computer tomography (MSCT) and micro computed tomography (micro-CT) for objectively assessing trabecular and cortical bone quality prior to implant placement. MATERIALS AND METHODS: Eight edentulous human mandibular bone samples were scanned with seven CBCT scanners (3D Accuitomo 170, i-CAT Next Generation, ProMax 3D Max, Scanora 3D, Cranex 3D, Newtom GiANO and Carestream 9300) and one MSCT system (Somatom Definition Flash) using the clinical exposure protocol with the highest resolution...
2016: European Journal of Oral Implantology
Tanja Kuhlmann, Samuel Ludwin, Alexandre Prat, Jack Antel, Wolfgang Brück, Hans Lassmann
Multiple sclerosis is a complex and heterogeneous, most likely autoimmune, demyelinating disease of the central nervous system (CNS). Although a number of histological classification systems for CNS lesions have been used by different groups in recent years, no uniform classification exists. In this paper, we propose a simple and unifying classification of MS lesions incorporating many elements of earlier histological systems that aims to provide guidelines for neuropathologists and researchers studying MS lesions to allow for better comparison of different studies performed with MS tissue, and to aid in understanding the pathogenesis of the disease...
January 2017: Acta Neuropathologica
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