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https://www.readbyqxmd.com/read/28107411/xenon-enhanced-dual-energy-ct-imaging-in-combined-pulmonary-fibrosis-and-emphysema
#1
Keishi Sugino, Masahiro Kobayashi, Yasuhiko Nakamura, Kyoko Gocho, Fumiaki Ishida, Kazutoshi Isobe, Nobuyuki Shiraga, Sakae Homma
BACKGROUND: Little has been reported on the feasibility of xenon-enhanced dual-energy computed tomography (Xe-DECT) in the visual and quantitative analysis of combined pulmonary fibrosis and emphysema (CPFE). OBJECTIVES: We compared CPFE with idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD), as well as correlation with parameters of pulmonary function tests (PFTs). METHODS: Studied in 3 groups were 25 patients with CPFE, 25 with IPF without emphysema (IPF alone), 30 with COPD...
2017: PloS One
https://www.readbyqxmd.com/read/28105755/morphometric-changes-in-polish-konik-mares-after-nearly-a-hundred-years-of-the-breed-s-existence
#2
E Pasicka, K Tarnawski, A Chrószcz, H Geringer de Oedenberg
The study was carried out on 126 mares of the Polish Konik horse breed. Mares were bred under a stable system housing and they came from five leading conservation breeding centres. The mares were divided into three age groups: 3-5 years old, 6-9 years old and over 10 years old. Each animal was characterized using 40 morphometric measurements. Discriminant analysis proved the exterior differences of mares in terms of the analysed metric values. It was concluded that the morphotype of modern Polish Konik mares is statistically significantly influenced by the following traits: neck ventral length, forearm circumference, distance between the vascular notch (incisura vasorum facialium) and the oral angle (angulus oris), distance between the margo coronalis ungulae and the margo solearis ungulae of the thoracic limb, thorax circumference and pelvis width...
January 20, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28100948/malignant-proliferating-trichilemmal-tumour-of-the-scalp-with-intra-cranial-extension-and-lung-metastasis-a-case-report
#3
Lancelot Lobo, Amol Dilip Amonkar, V V S M Kumar Dontamsetty
Malignant proliferating trichilemmal tumour (MPTT) is a rare cutaneous tumour predominantly affecting the scalp, eyelids, neck and face of elderly women. It is a large, solitary, multilobulated lesion that may arise within a pilar cyst. These tumours are largely benign, often cystic and are characterized by trichilemmal keratinisation. However at times, the tumour has an aggressive clinical course and a propensity for distant metastasis. We report a case of a 29-year-old male who presented with a scalp swelling...
December 2016: Indian Journal of Surgery
https://www.readbyqxmd.com/read/28100899/effectiveness-of-computed-tomography-attenuation-values-in-characterization-of-pericardial-effusion
#4
Mehmet Serkan Çetin, Elif Hande Özcan Çetin, Mustafa Özdemir, Serkan Topaloğlu, Dursun Aras, Ahmet Temizhan, Sinan Aydoğdu
OBJECTIVE: The aim of this study was to evaluate the effectiveness of computed tomography (CT) attenuation values in the characterization of pericardial effusion. METHODS: This study consisted of 96 patients with pericardial effusion who underwent pericardiocentesis. For further diagnostic evaluation of pericardial effusion, all the patients were assessed by thorax CT. CT attenuation values were measured from at least 5 different areas of pericardial fluid by specifying the largest region of interest...
January 17, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28099504/direction-specific-impairments-in-cervical-range-of-motion-in-women-with-chronic-neck-pain-influence-of-head-posture-and-gravitationally-induced-torque
#5
Thomas Rudolfsson, Martin Björklund, Åsa Svedmark, Divya Srinivasan, Mats Djupsjöbacka
BACKGROUND: Cervical range of motion (ROM) is commonly assessed in clinical practice and research. In a previous study we decomposed active cervical sagittal ROM into contributions from lower and upper levels of the cervical spine and found level- and direction-specific impairments in women with chronic non-specific neck pain. The present study aimed to validate these results and investigate if the specific impairments can be explained by the neutral posture (defining zero flexion/extension) or a movement strategy to avoid large gravitationally induced torques on the cervical spine...
2017: PloS One
https://www.readbyqxmd.com/read/28099265/observer-agreement-of-treatment-responses-on-planar-bone-scintigraphy-in-prostate-cancer-patients-importance-of-the-lesion-assessment-method
#6
Randi F Fonager, Helle D Zacho, Signe Albertsen, Joan Fledelius, June A Ejlersen, Mette H Christensen, Ramune Aleksyniene, José A Biurrun Manresa, Lars J Petersen
PURPOSE: The aim of this study was to assess observer agreement on the evaluation of treatment responses of bone metastases by bone scintigraphy (BS) using different scoring methods in prostate cancer patients. PATIENTS AND METHODS: Sixty-three paired BS from 55 patients were included. BS was performed before and after more than 12 weeks of anticancer treatment. A panel of experienced nuclear medicine physicians from several institutions evaluated treatment response using three different methods: (a) standard clinical assessment, (b) MD Anderson criteria, and (c) Prostate Cancer Working Group 2 (PCWG-2) criteria...
January 17, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28099167/non-invasive-measurement-of-volume-time-curves-in-patients-with-mitral-regurgitation-and-in-healthy-volunteers-using-a-new-operator-independent-screening-tool
#7
Maurits K Konings, Rosemarijn Jansen, Laurens P Bosman, Rienk Rienks, Steven A J Chamuleau, Frank E Rademakers, Maarten J Cramer
Left ventricular volume-time curves (VTCs) provide hemodynamic data, and may help clinical decision making. The generation of VTCs using echocardiography, however, is time-consuming and prone to inter-operator variability. In this study, we used a new non-invasive, operator-independent technique, the hemodynamic cardiac profiler (HCP), to generate VTCs. The HCP, which uses a low-intensity, patient-safe, high-frequency applied AC current, and 12 standard ECG electrodes attached on the thorax in a pre-defined pattern, was applied to five young healthy volunteers, five older healthy volunteers, and five patients with severe mitral regurgitation...
January 18, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28094413/electrical-impedance-tomography-for-lung-ventilation-monitoring-of-the-dog
#8
Simon Gloning, Korbinian Pieper, Martin Zoellner, Andrea Meyer-Lindenberg
BACKGROUND: Electrical impedance tomography (EIT) is a radiation free technique which takes advantage of the different electrical conductivities of different tissues. Its main field of application is lung ventilation monitoring. The aim of this prospective study was to evaluate the feasibility of collecting EIT information on a sample of dogs with different thoracic shapes under clinical conditions by connecting an electrode belt without fur clipping. MATERIAL AND METHODS: Fifteen pulmonary healthy dogs were anaesthetized, positioned in sternal recumbency and ventilated in a pressure-controlled mode at three different positive end-expiratory pressure levels (PEEP) of 0, 5 and 10 cmH2O for five breaths each, with a peak inspiratory pressure of 15 cmH2O...
January 17, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28094004/the-vertebrae-and-ribs-of-homo-naledi
#9
Scott A Williams, Daniel García-Martínez, Markus Bastir, Marc R Meyer, Shahed Nalla, John Hawks, Peter Schmid, Steven E Churchill, Lee R Berger
Hominin evolution featured shifts from a trunk shape suitable for climbing and housing a large gut to a trunk adapted to bipedalism and higher quality diets. Our knowledge regarding the tempo, mode, and context in which these derived traits evolved has been limited, based largely on a small-bodied Australopithecus partial skeleton (A.L. 288-1; "Lucy") and a juvenile Homo erectus skeleton (KNM-WT 15000; "Turkana Boy"). Two recent discoveries, of a large-bodied Australopithecus afarensis (KSD-VP-1/1) and two Australopithecus sediba partial skeletons (MH1 and MH2), have added to our understanding of thorax evolution; however, little is known about thorax morphology in early Homo...
January 13, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28089649/magnetic-resonance-imaging-conditional-devices-luxury-or-real-clinical-need
#10
REVIEW
Sophie I Mavrogeni, George Poulos, Genovefa Kolovou, George Theodorakis
Although the risk of MRI scanning on patients with conventional devices is rather lower than initially thought, the patient's safety can only be assured by using MRI-conditional devices. The most important modifications in MRI-conditional devices include: a) Reduction in ferromagnetic components to reduce magnetic attraction and susceptibility artefacts b) Replacement of reed switch by Hall sensor in order to avoid unpredictable reed switch behaviour c) Lead coil design to minimize lead heating and electrical current induction d) Filter circuitry to prevent damage to internal power supply e) Dedicated pacemaker programming to prevent inappropriate pacemaker inhibition and competing rhythms...
January 9, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28089512/paleozoic-nymphal-wing-pads-support-dual-model-of-insect-wing-origins
#11
Jakub Prokop, Martina Pecharová, André Nel, Thomas Hörnschemeyer, Ewa Krzemińska, Wiesław Krzemiński, Michael S Engel
The appearance of wings in insects, early in their evolution [1], has been one of the more critical innovations contributing to their extraordinary diversity. Despite the conspicuousness and importance of wings, the origin of these structures has been difficult to resolve and represented one of the "abominable mysteries" in evolutionary biology [2]. More than a century of debate has boiled the matter down to two competing alternatives-one of wings representing an extension of the thoracic notum, the other stating that they are appendicular derivations from the lateral body wall...
January 9, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28080897/radiographic-cardiac-silhouette-measurement-in-captive-livingstone-s-fruit-bats-pteropus-livingstonii
#12
Katherine V R Dickson, Ceri W Twiston Davies, Andrew Routh, Rowena Killick, Alberto R Barbon
Cardiomyopathies have been increasingly noted in the captive population of Livingstone's fruit bat ( Pteropus livingstonii ). The aim of this study was to produce a set of repeatable quantitative reference measurements that could be used to assess the cardiac size during radiographic examination of this species. Ventro-dorsal and lateral radiographs (n = 129) from a total of 42 individual Livingstone's fruit bats were examined. The control group radiographs (n = 102) consisted of 34 healthy individuals. Radiographic measurements were taken of structures within the thorax and then converted into ratios...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28079960/successful-medical-management-of-a-domestic-longhair-cat-with-subdural-intracranial-empyema-and-multifocal-pneumonia
#13
Thomas J A Cardy, Richard Lam, Laureen M Peters, Philippa J McLaren, Màrian Matas Riera, Steven De Decker
OBJECTIVE: To describe a case of successful medical management of subdural intracranial empyema and multifocal pneumonia in a domestic longhaired cat. CASE SUMMARY: A 7-year-and-8-month-old male neutered domestic longhair cat presented with tachypnea, respiratory compromise, vestibular ataxia, obtundation, left-sided head tilt, and multiple cranial nerve deficits. Neuroanatomical localization was multifocal with central vestibular involvement. Magnetic resonance imaging of the head indicated diffuse subdural empyema, mainly affecting the middle cranial fossa and the right cerebrum...
January 12, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28079026/a-review-of-compliant-transmission-mechanisms-for-bio-inspired-flapping-wing-micro-air-vehicles
#14
Chao Zhang, Claudio Rossi
Flapping-wing micro air vehicles (FWMAVs) are a class of unmanned aircraft that imitate flight characteristics of natural organisms such as birds, bats, and insects, in order to achieve maximum flight efficiency and manoeuvrability. Designing proper mechanisms for flapping transmission is an extremely important aspect for FWMAVs. Compliant transmission mechanisms have been considered as an alternative to rigid transmission systems due to their lower the number of parts, thereby reducing the total weight, lower energy loss thanks to little or practically no friction among parts, and at the same time, being able to store and release mechanical power during the flapping cycle...
January 11, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28076009/delineating-extramammary-findings-at-breast-mr-imaging
#15
Yiming Gao, Opeyemi Ibidapo, Hildegard K Toth, Linda Moy
Breast magnetic resonance (MR) imaging is the only breast imaging modality that consistently encompasses extramammary structures in the thorax and upper abdomen. Incidental extramammary findings on breast MR images of patients with a history of breast cancer or other malignancies are significantly more likely to be malignant and may affect staging and treatment. An understanding of the frequency, distribution, and context of extramammary findings on breast MR images and a familiarity with common and uncommon sites of breast cancer metastasis inform the differential diagnosis and prompt the appropriate diagnostic next step, to differentiate benign from malignant findings...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28075028/a-recognizable-type-of-syndromic-short-stature-with-arthrogryposis-caused-by-bi-allelic-sema3a-loss-of-function-variants
#16
Matthias Baumann, Elisabeth Steichen-Gersdorf, Birgit Krabichler, Thomas Müller, Andreas R Janecke
The semaphorins constitute a large family of secreted and membrane-associated proteins that regulate many developmental processes, including neural circuit assembly, bone formation and angiogenesis. Recently, bi-allelic loss-of-function variants in SEMA3A (semaphorin 3A) were identified in a single patient with a particular pattern of multiple congenital anomalies (MCA). Using homozygosity mapping combined with exome sequencing, we identified a homozygous SEMA3A variant causing a premature stop codon in an 8-year-old boy with the same pattern of MCA...
January 11, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28073871/benign-cystic-mediastinal-teratoma-presenting-as-a-massive-pleural-effusion-in-a-17-year-old-boy
#17
Annalisa Montebello, Adrian Mizzi, Paul John Cassar, Karen Cassar
Mediastinal teratomas are a rare, albeit an important differential diagnosis of anterior/middle mediastinal masses in young adults and various atypical presentations have been reported. The authors report a case of a 17-year-old boy who presented with a 2-month history of worsening shortness of breath and pleuritic chest pain. A massive left-sided pleural fluid collection was seen on a chest radiograph (CXR). The pleural fluid was drained and a CT Thorax confirmed the presence of a cystic mass. Following re-accumulation of the fluid, thoracotomy was performed and a benign mediastinal teratoma excised...
January 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28068966/glenoid-morphology-in-light-of-anatomical-and-reverse-total-shoulder-arthroplasty-a-dissection-and-3d-ct-based-study-in-male-and-female-body-donors
#18
Sandra Mathews, Marco Burkhard, Nabil Serrano, Karl Link, Martin Häusler, Nakita Frater, Ingeborg Franke, Helena Bischofberger, Florian M Buck, Dominic Gascho, Michael Thali, Steffen Serowy, Magdalena Müller-Gerbl, Gareth Harper, Ford Qureshi, Thomas Böni, Hans-Rudolf Bloch, Oliver Ullrich, Frank-Jakobus Rühli, Elisabeth Eppler
BACKGROUND: Placement of the glenoid baseplate is of paramount importance for the outcome of anatomical and reverse total shoulder arthroplasty. However, the database around glenoid size is poor, particularly regarding small scapulae, for example, in women and smaller individuals, and is derived from different methodological approaches. In this multimodality cadaver study, we systematically examined the glenoid using morphological and 3D-CT measurements. METHODS: Measurements of the glenoid and drill hole tunnel length for superior baseplate screw placement were recorded to define size of the glenoid and the distance to the scapular notch on cadaveric specimens...
January 10, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28064146/chronic-exposure-of-zinc-oxide-nanoparticles-causes-deviant-phenotype-in-drosophila-melanogaster
#19
Avnika Singh Anand, Dipti N Prasad, Shashi Bala Singh, Ekta Kohli
Zinc oxide nanoparticles (ZnO NPs) are commonly used nanomaterials (NMs) with versatile applications from high-end technologies to household products. This pervasive utilisation has brought human in the close interface with nanoparticles (NPs), hence questioning their safety prior to usage is a must. In this study, we have assessed the effects of chronic exposure to ZnO NPs (<50nm) on the model organism Drosophila melanogaster. Potential toxic effects were studied by evaluating longevity, climbing ability, oxidative stress and DNA fragmentation...
December 23, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28061923/electromagnetic-interference-in-implantable-defibrillators-in-single-engine-fixed-wing-aircraft
#20
Alexandra A J de Rotte, Peter van der Kemp, Peter A Mundy, Rienk Rienks, August A de Rotte
BACKGROUND: Little is known about the possible electromagnetic interferences (EMI) in the single-engine fixed-wing aircraft environment with implantable cardio-defibrillators (ICDs). Our hypothesis is that EMI in the cockpit of a single-engine fixed-wing aircraft does not result in erroneous detection of arrhythmias and the subsequent delivery of an inappropriate device therapy. METHODS: ICD devices of four different manufacturers, incorporated in a thorax phantom, were transported in a Piper Dakota Aircraft with ICAO type designator P28B during several flights...
January 1, 2017: Aerospace Medicine and Human Performance
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