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Mobile radiography

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https://www.readbyqxmd.com/read/28196041/change-in-talar-translation-in-the-coronal-plane-after-mobile-bearing-total-ankle-replacement-and-its-association-with-lower-limb-and-hindfoot-alignment
#1
Young Yi, Jae-Ho Cho, Ji-Beom Kim, Jae-Young Kim, Su-Yeon Park, Woo Chun Lee
BACKGROUND: Mobile-bearing total ankle replacement (TAR) enables motion at the tibial implant-polyethylene insert interface. This motion could lead to coronal translation of the talus relative to the tibia and may affect radiographic outcome. We aimed to assess the translation of the talus before and after mobile-bearing TAR to determine whether translation of the talus after TAR is associated with coronal plane alignment of the lower limb and hindfoot as well as to investigate the complications associated with talar translation...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28164050/extraskeletal-mesenchymal-chondrosarcoma-of-shoulder-an-extremely-rare-case
#2
Salman Ghaffari, Ali Farsavian, Seyed Mohamad Mehdi Daneshpoor, Masoud Shayesteh Azar
INTRODUCTION: Extraskeletal chondrosarcoma (EMC) is a rare, aggressive neoplasm which has been seen in the soft tissue area. This soft tissue sarcoma is classified to myxoid and mesenchymal based on histologic criteria. The mesenchymal subtype has a poor prognosis. In approximately 50% of patient with EMC, we could observe soft tissue lesion and stippled calcification in the conventional radiography. CASE REPORT: In the current paper, we introduced a 47-year-old Iranian male patient having painless, mobile, nontender, and firm mass in left shoulder...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28064140/reduced-radiation-dose-and-improved-image-quality-using-a-mini-mobile-digital-imaging-system-in-a-neonatal-intensive-care-unit
#3
Tae-Hoon Kim, Jong-Hyun Ryu, Chang-Won Jeong, Hong Young Jun, Dong-Woon Heo, Seung Hyun Lee, Yeon Kyun Oh, Mi-Jung Lee, Kwon-Ha Yoon
This study was aimed to assess the radiation dose and image quality of a mini-mobile digital imaging (mini-DI) system for neonatal chest radiography and compared to conventional digital radiography (DR). A total of 64 neonates were examined and anatomical landmarks were assessed. The entrance surface dose of mini DI and conventional DR was 26.64±0.15 μGy and 49.11±1.46 μGy, respectively (p<0.001). The mean SNR values for mini-DI and DR were 233.2±5.1 and 31.6±1.2, and 10% MTF values were 131 and 161μm...
December 6, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/28050548/monostotic-fibrous-dysplasia-of-the-metacarpal-a-case-report
#4
Kátia Tôrres Batista, Hugo José de Araújo, Ulises Prieto Y Schwartzman
Fibrous dysplasia is a bone disease characterized by abnormal differentiation of fibrous tissue in the bones; it is often asymptomatic. It may affect one bone (monostotic) or several bones (polyostotic). The monostotic form primarily affects the ribs, but hardly ever affects the hand. It is important to make the differential diagnosis with malignant bone tumors. This article describes the treatment and outcome of a rare case of a patient admitted with a history of tumor growth in the right hand, diagnosed as fibrous dysplasia of the right second metacarpal...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28046251/su-g-iep3-02-characteristics-of-in-vivo-mosfet-dosimeters-for-diagnostic-x-ray-low-dose-measurements
#5
S Li, S Ali, K Harper, Q Liang, D Serratore
PURPOSE: To correct in-vivo metal-oxide-semiconductor field-effect transistor (MOSFET) dosimeters dependence on X-ray energy, dose and dose rate, and temperature in order to measure doses or exposures on several anatomic points of interest undergoing some routine radiographs. METHODS: A mobile MOSFET system (BEST Medical) was carefully calibrated with X-ray at kVp of 70, 80, 100, 120, and 138 kVp, phantom temperatures at 0, 21, and 43 oC, and exposure range from 0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27994532/severe-hypoxemia-in-a-healthy-donor-for-allogeneic-hematopoietic-stem-cell-transplantation-after-only-the-first-administration-of-granulocyte-colony-stimulating-factor
#6
Keita Yamamoto, Noriko Doki, Yasushi Senoo, Yuho Najima, Takeshi Kobayashi, Kazuhiko Kakihana, Kyoko Haraguchi, Yoshiki Okuyama, Hisashi Sakamaki, Kazuteru Ohashi
BACKGROUND: Granulocyte-colony stimulating factor (G-CSF) is widely used to mobilize peripheral blood stem cells (PBSCs) in healthy donors. A few reports have shown that some healthy donors developed acute respiratory distress syndrome or capillary leak syndrome after more than several rounds of G-CSF administration or leukapheresis. CASE REPORT: We report the case of a healthy donor for allogeneic stem cell transplantation who developed severe hypoxemia 1 h after only the first administration of G-CSF...
November 2016: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/27929508/development-of-a-universal-medical-x-ray-imaging-phantom-prototype
#7
Annemari Groenewald, Willem A Groenewald
Diagnostic X-ray imaging depends on the maintenance of image quality that allows for proper diagnosis of medical conditions. Maintenance of image quality requires quality assurance programs on the various X-ray modalities, which consist of pro-jection radiography (including mobile X-ray units), fluoroscopy, mammography, and computed tomography (CT) scanning. Currently a variety of modality-specific phantoms are used to perform quality assurance (QA) tests. These phantoms are not only expensive, but suitably trained personnel are needed to successfully use them and interpret the results...
November 8, 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27876330/pneumomediastinum-pneumothorax-and-subcutaneous-emphysema-caused-by-colonoscopic-perforation-a-report-of-two-cases
#8
Pyong Wha Choi
BACKGROUND: Although colonoscopy is generally a safe procedure, lethal complications can occur. Colonoscopic perforation is one of the most serious complications, and it can present with various clinical symptoms and signs. Aggravating abdominal pain and free air on simple radiography are representative clinical manifestations of colonoscopic perforation. However, unusual symptoms and signs, such as dyspnea and subcutaneous emphysema, which are less likely to be related with complicating colonoscopy, may obscure correct clinical diagnosis...
November 19, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27785748/lung-ultrasound-will-soon-replace-chest-radiography-in-the-diagnosis-of-acute-community-acquired-pneumonia
#9
REVIEW
Jean-Eudes Bourcier, Sergiu Braga, Didier Garnier
Acute community-acquired pneumonia should be diagnosed early to avoid most complications. The common diagnostic tools were represented by blood tests and chest X-ray with CT scan coming as a second-line exploration. The presence of air in the pulmonary parenchyma has long been thought of as not explorable by ultrasound. However, since the 1990s, several teams have described a semiology of ultrasonography of pulmonary diseases. Moreover, the safety of the technique and the development of mobile and ultra-portable devices have offered it as a first-line examination by a non-radiologist physician...
December 2016: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/27759881/endodontic-procedures-for-retreatment-of-periapical-lesions
#10
REVIEW
Massimo Del Fabbro, Stefano Corbella, Patrick Sequeira-Byron, Igor Tsesis, Eyal Rosen, Alessandra Lolato, Silvio Taschieri
BACKGROUND: When primary root canal therapy fails, periapical lesions can be retreated with or without surgery. Root canal retreatment is a non-surgical procedure that involves removal of root canal filling materials from the tooth, followed by cleaning, shaping and obturating of the canals. Root-end resection is a surgical procedure that involves exposure of the periapical lesion through an osteotomy, surgical removal of the lesion, removal of part of the root-end tip, disinfection and, commonly, retrograde sealing or filling of the apical portion of the remaining root canal...
October 19, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27751688/microbial-impacts-on-99m-tc-migration-through-sandstone-under-highly-alkaline-conditions-relevant-to-radioactive-waste-disposal
#11
Sarah L Smith, Christopher Boothman, Heather A Williams, Beverly L Ellis, Joanna Wragg, Julia M West, Jonathan R Lloyd
Geological disposal of intermediate level radioactive waste in the UK is planned to involve the use of cementitious materials, facilitating the formation of an alkali-disturbed zone within the host rock. The biogeochemical processes that will occur in this environment, and the extent to which they will impact on radionuclide migration, are currently poorly understood. This study investigates the impact of biogeochemical processes on the mobility of the radionuclide technetium, in column experiments designed to be representative of aspects of the alkali-disturbed zone...
January 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27685102/evaluation-of-cassette-based-digital-radiography-detectors-using-standardized-image-quality-metrics-aapm-tg-150-draft-image-detector-tests
#12
Guang Li, Travis C Greene, Thomas K Nishino, Charles E Willis
The purpose of this study was to evaluate several of the standardized image quality metrics proposed by the American Association of Physics in Medicine (AAPM) Task Group 150. The task group suggested region-of-interest (ROI)-based techniques to measure nonuniformity, minimum signal-to-noise ratio (SNR), number of anomalous pixels, and modulation transfer function (MTF). This study evaluated the effects of ROI size and layout on the image metrics by using four different ROI sets, assessed result uncertainty by repeating measurements, and compared results with two commercially available quality control tools, namely the Carestream DIRECTVIEW Total Quality Tool (TQT) and the GE Healthcare Quality Assurance Process (QAP)...
September 8, 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27676735/functional-outcomes-after-rehabilitation-of-sternoclavicular-disjunction
#13
Laila Mahir, Siham Zahi, Soumia Meftah, Herman Azanmasso, Fatima Lmidmani, Abdellatif El Fatimi
OBJECTIVE: Introduction: the sternoclavicular joint is very stable due to a strong ligamentous system, disjunctions are rare. Their diagnosis is difficult. Plain radiography does not allow a proper analysis and use of CT scans is necessary. They can be life-threatening in their posterior variety due to the proximity of the noble elements of the mediastinum. OBJECTIVE: The aim of this study is to describe the evolution of the sternoclavicular disjunction after functional rehabilitation through 6 observations...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27676730/multifocal-osteonecrosis-revealing-an-antiphospholipid-syndrome-case-report
#14
Sophie Legrève
OBJECTIVE: Multifocal osteonecrosis is rare. A zone of epiphyseal bone-marrow necrosis of three or more joints characterizes it. The most common risk factors are glucocorticoids intake and alcoholism. However, there is a series of other causes that could be incriminated in osteonecrosis, among which antiphospholipid syndrome. This case report, illustrates a primary antiphospholipid syndrome with only one clinical manifestation: multifocal osteonecrosis. OBSERVATIONS: A 30-year-old woman, with a medical history of left total hip replacement (THR), presents with severe right coxalgia and pain in both knees and shoulders...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27648278/a-clinical-audit-of-anatomical-side-marker-use-in-a-paediatric-medical-imaging-department
#15
Kate Barry, Saravana Kumar, Rebecca Linke, Emma Dawes
INTRODUCTION: The gold standard in general radiography is to place a radiopaque anatomical side marker in the field of view for each radiographic image prior to exposure. The advent of digital radiography has allowed for anatomical side markers to be digitally added to films as part of post-processing. The aim of this audit was to identify whether general X-ray images performed in a tertiary Women's and Children's Hospital were being appropriately annotated with a definitive side marker, and to identify factors that may contribute to inappropriately labelled images...
September 2016: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/27494386/frostbite-spectrum-of-imaging-findings-and-guidelines-for-management
#16
John D Millet, Richard K J Brown, Benjamin Levi, Casey T Kraft, Jon A Jacobson, Milton D Gross, Ka Kit Wong
Frostbite is a localized cold thermal injury that results from tissue freezing. Frostbite injuries can have a substantial effect on long-term limb function and mobility if not promptly evaluated and treated. Imaging plays a critical role in initial evaluation of frostbite injuries and in monitoring response to treatment. A multimodality approach involving radiography, digital subtraction angiography (DSA), and/or multiphase bone scintigraphy with hybrid single photon emission computed tomography (SPECT)/computed tomography (CT) is often necessary for optimal guidance of frostbite care...
November 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27444365/analysis-of-endovascular-therapy-for-femoropopliteal-disease-with-the-supera-stent
#17
Miguel Montero-Baker, Gregory J Ziomek, Luis Leon, Aaron Gonzales, Robert S Dieter, Crystal L Gadd, John P Pacanowski
BACKGROUND: The structural limitations of currently available laser-cut nitinol stents in the highly diseased arterial system of the lower extremity are well described. These devices are frequently used in long-segment occlusions, at the adductor hiatus, and across the knee into the popliteal artery and tibial-peroneal trunk despite concerns related to the high mobility of the knee joint and the potential for external stent compression, fractures, and occlusion. The Supera stent (Abbott Vascular, Santa Clara, Calif) was developed to provide superior radial strength, fracture resistance, and flexibility compared with laser-cut nitinol stents...
October 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27412082/radiography-on-wheels-arrives-to-nursing-homes-an-economic-assessment-of-a-new-health-care-technology-in-southern-sweden
#18
Alexander Dozet, Bodil Ivarsson, Karin Eklund, Rosemarie Klefsgård, Mats Geijer
RATIONALE, AIMS AND OBJECTIVES: The process of transferring older, vulnerable adults from an elder care facility to the hospital for medical care can be an emotionally and physically stressful experience. The recent development of modern mobile radiography may help to ease this anxiety by allowing for evaluation in the nursing home itself. Up until this point, no health economic evaluation of the technology has been attempted in a Swedish setting. The objective of this study was to determine whether examinations of patients in elder care facilities with mobile radiography were cost-effective from a societal perspective compared with hospital-based radiological examinations...
December 2016: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/27339484/can-implant-removal-restore-mobility-after-fracture-of-the-thoracolumbar-segment
#19
Paul Axelsson, Björn Strömqvist
Background and purpose - Randomized trials have found that treating spinal burst fractures with reduction and posterior fixation is adequate without the use of bone grafting for definitive fusion. Restitution of intervertebral mobility of such an unfused segment after fracture healing may unload the adjacent parts of the spine and reduce the risk of degeneration of these segments. We used radiostereometry (RSA) to study whether late implant removal would restore the intervertebral mobility of a thoracolumbar segment treated with posterior instrumentation but no bone grafting for unstable spinal fracture...
October 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27320299/periodontal-regenerative-therapy-in-patient-with-chronic-periodontitis-and-type-2-diabetes-mellitus-a-case-report
#20
Fumi Seshima, Makiko Nishina, Takashi Namba, Atsushi Saito
We report a case of generalized chronic periodontitis and type 2 diabetes mellitus requiring periodontal treatment including regenerative therapy. The patient was a 66-year-old man who presented with the chief complaint of gingival inflammation and mobile teeth in the molar region. He had been being treated for type 2 diabetes mellitus since 1999. His glycated hemoglobin (HbA1c) level was 7.8%. An initial examination revealed sites with a probing depth of ≥7 mm in the molar region, and radiography revealed angular bone defects in this area...
2016: Bulletin of Tokyo Dental College
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