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https://www.readbyqxmd.com/read/28230623/safety-and-accuracy-of-freehand-versus-navigated-iliac-screws-results-from-222-screw-placements
#1
Randall J Hlubek, Kaith K Almefty, David S Xu, Jay D Turner, U Kumar Kakarla
STUDY DESIGN: Retrospective review. OBJECTIVE: To compare the safety and accuracy of the freehand technique versus stereotactic navigation for placement of iliac screws. SUMMARY OF BACKGROUND DATA: Iliac screw fixation is often used to augment lumbosacral reconstruction in advanced spine disease to increase the likelihood of successful arthrodesis. Iliac screws can be placed with image guidance, using either intraoperative fluoroscopy or computed tomography (CT) to guide navigation...
February 22, 2017: Spine
https://www.readbyqxmd.com/read/28208989/central-telangiectatic-osteosarcoma-of-the-mandible-in-a-paediatric-patient-a-rarity
#2
Divya Tomar, Manu Dhillon, Muhamad Nishad Thayath, Iram Zaidi, Shikha Singh
Osteosarcoma (OS) involving the head and neck region is rare and is a diagnostic challenge due to its aggressive nature and varied presentations. Although OS constitute 40% to 60% of all bone tumours, only 10% of these occur in the head and neck region, most commonly in the maxilla and mandible. OS of the jaw bone has a different pattern and behaviour when compared to OS at other anatomic location. It occurs in a more elderly population, less aggressive and usually spreads locally rather than distant metastases...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28168714/application-of-the-stephan-et-al-chest-radiograph-comparison-method-to-decomposed-human-remains
#3
Mariyam I Isa, Joseph T Hefner, Michael A Markey
This manuscript describes the use of comparative radiography of the chest to facilitate positive identification of human remains in advanced stages of decomposition. The method reported by Stephan et al. for positive identification of dry, disarticulated skeletal elements was used on semifleshed, decomposing remains. Positive identification was established through multiple points of concordance observed in radiographs of the left and right clavicles and the C5-T1 vertebrae. This case study demonstrates the applicability of the Stephan et al...
February 7, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28166937/diagnostics-and-ancillary-tests-of-neurologic-dysfunction-in-the-ruminant
#4
REVIEW
Dusty W Nagy
A variety of diagnostic tests can be used to help further characterize and diagnose neurologic disease in ruminant species. Cerebrospinal fluid is easily collected, and analysis can help in defining the broad category of disease. Diagnostic imaging, including radiography, myelography, ultrasonography, computed tomography, and MRI, have all been used to varying degrees in ruminants. Advanced cross-sectional imaging techniques have the capacity to aid greatly in diagnosis, but their cost can often be prohibitive...
March 2017: Veterinary Clinics of North America. Food Animal Practice
https://www.readbyqxmd.com/read/28158042/high-speed-two-dimensional-synchrotron-white-beam-x-ray-radiography-of-spray-breakup-and-atomization
#5
Benjamin R Halls, Christopher D Radke, Benjamin J Reuter, Alan L Kastengren, James R Gord, Terrence R Meyer
High-speed, two-dimensional synchrotron x-ray radiography and phase-contrast imaging are demonstrated in propulsion sprays. Measurements are performed at the 7-BM beamline at the Advanced Photon Source user facility at Argonne National Laboratory using a recently developed broadband x-ray white beam. This novel enhancement allows for high speed, high fidelity x-ray imaging for the community at large. Quantitative path-integrated liquid distributions and spatio-temporal dynamics of the sprays were imaged with a LuAG:Ce scintillator optically coupled to a high-speed CMOS camera...
January 23, 2017: Optics Express
https://www.readbyqxmd.com/read/28154899/baseline-increased-18f-fluoride-uptake-lesions-at-vertebral-corners-on-positron-emission-tomography-predict-new-syndesmophyte-development-in-ankylosing-spondylitis-a-2-year-longitudinal-study
#6
Eun-Kyoung Park, Kyoungjune Pak, Ji-Heh Park, Keunyoung Kim, Seong-Jang Kim, In-Joo Kim, Geun-Tae Kim, Seung-Geun Lee
The goal of this study was to demonstrate whether increased 18F-fluoride uptake lesions on positron emission tomography (PET) scan can predict new syndesmophyte development in patients with ankylosing spondylitis (AS). In 12 AS patients, 18F-fluoride PET and magnetic resonance imaging (MRI) was performed at baseline, and radiography was performed at baseline and the 2-year follow-up. The following data were recorded: the presence of increased 18F-fluoride uptake lesions on PET defined as an uptake greater than the uptake in the adjacent normal vertebral body; acute (type A) and advanced (type B) corner inflammatory lesions (CILs) and fat lesions on MRI; and syndesmophytes on radiography...
February 2, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28133221/-a-case-of-interstitial-pneumonitis-induced-by-lapatinib-plus-letrozole
#7
Daigo Yamamoto, Chizuko Yamamoto, Mitsuo Yamamoto
Lapatinib is an orally bioavailable dual inhibitor of the intracellular domain of both the HER2 protein and the epidermal growth factor receptor. This dual inhibitor can effectively prevent the downstream signal transduction initiated by a tyrosine kinase, thereby reducing the proliferation rate of tumor cells. Lapatinib was demonstrated to be beneficial in patients with HER2-positive locally advanced and metastatic breast cancer. We present here a case of interstitial pneumonitis that occurred after lapatinib treatment...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28130567/malignant-pericardial-mesothelioma-a%C3%A2-systematic-review-of-current-practice
#8
S Cao, S Jin, J Cao, J Shen, H Zhang, Q Meng, B Pan, Y Yu
BACKGROUND: Malignant mesothelioma is a rare but aggressive tumor, with a high misdiagnosis rate and overall bleak prognosis. In 0.7% of all cases, the origin is the pericardium. METHODS: The present study is a review of the literature published in recent decades focusing on the advances in clinical manifestations, radiological findings, diagnosis, differential diagnosis, and treatment of malignant pericardial mesothelioma (MPM). RESULTS: No clear relationship has been established between the etiologies and the development of MPM...
January 27, 2017: Herz
https://www.readbyqxmd.com/read/28101664/history-and-evolution-of-the-barium-swallow-for-evaluation-of-the-pharynx-and-esophagus
#9
REVIEW
Marc S Levine, Stephen E Rubesin
This article reviews the history of the barium swallow from its early role in radiology to its current status as an important diagnostic test in modern radiology practice. Though a variety of diagnostic procedures can be performed to evaluate patients with dysphagia or other pharyngeal or esophageal symptoms, the barium study has evolved into a readily available, non-invasive, and cost-effective technique that can facilitate the selection of additional diagnostic tests and guide decisions about medical, endoscopic, or surgical management...
February 2017: Dysphagia
https://www.readbyqxmd.com/read/28099606/bacillary-angiomatosis-with-bone-invasion
#10
Lucia Martins Diniz, Karina Bittencourt Medeiros, Luana Gomes Landeiro, Elton Almeida Lucas
Bacillary angiomatosis is an infection determined by Bartonella henselae and B. quintana, rare and prevalent in patients with acquired immunodeficiency syndrome. We describe a case of a patient with AIDS and TCD4+ cells equal to 9/mm3, showing reddish-violet papular and nodular lesions, disseminated over the skin, most on the back of the right hand and third finger, with osteolysis of the distal phalanx observed by radiography. The findings of vascular proliferation with presence of bacilli, on the histopathological examination of the skin and bone lesions, led to the diagnosis of bacillary angiomatosis...
November 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28066731/imaging-of-the-hip-a-systematic-approach-to-the-young-adult-hip
#11
Sara Muñoz Chiamil, Claudia Astudillo Abarca
BACKGROUND: Great advances in knowledge and understanding of the biomechanics of the hip, both in arthroscopic procedures and imaging techniques, have expanded and improved the diagnosis of pathologies of the young adult hip. The anatomy of the hip joint is complex due to its morphology and orientation. The inter-pretation of the images requires deep knowledge of the osseous and soft tissue anatomy: muscles, tendons, ligaments, vessels and nerves. There are multiple imaging tools. Diagnostic techniques have different utilities and often are complementary...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28048675/tu-fg-209-07-medical-physics-1-0-versus-medical-physics-2-0-a-case-study
#12
D Carver, C Willis, P Stauduhar, T Nishino, J Wells, E Samei
PURPOSE: To illustrate how performance analytics can identify performance decrement in digital radiography systems. METHODS: Subsequent to a radiologist's image quality complaint, four different advanced methods contributed to root cause analysis. Our system was a GE Revolution XQi digital radiography unit. Initially, we reviewed weekly GE Quality Assurance Procedures (QAP) results in a database dating from 2001. Next, we evaluated objective image quality metrics of individual PA Chest radiographs acquired...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047881/we-ab-bra-07-operating-room-quality-assurance-orqa-for-spine-surgery-using-known-component-3d-2d-image-registration
#13
A Uneri, T De Silva, J Goerres, M Jacobson, M Ketcha, S Reaungamornrat, G Kleinszig, S Vogt, A Khanna, J Wolinsky, J Siewerdsen
PURPOSE: Intraoperative x-ray radiography/fluoroscopy is commonly used to qualitatively assess delivery of surgical devices (e.g., spine pedicle screws) but can fail to reliably detect suboptimal placement (e.g., breach of adjacent critical structures). We present a method wherein prior knowledge of the patient and surgical components is leveraged to match preoperative CT and intraoperative radiographs for quantitative assessment of 3D pose. The method presents a new means of operating room quantitative quality assurance (ORQA) that could improve quality and safety, and reduce the frequency of revision surgeries...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047794/su-g-iep3-09-investigating-the-interplay-of-antiscatter-grids-with-modern-detectors-and-image-processing-in-digital-radiography
#14
A Sanchez, K Little, M Baad, I Reiser, Z F Lu, K Feinstein
PURPOSE: To use phantom and simulation experiments to relate technique factors, patient size and antiscatter grid use to image quality in portable digital radiography (DR), in light of advancements in detector design and image processing. METHODS: Image contrast-to-noise ratio (CNR) on a portable DR system (MobileDaRt Evolution, Shimadzu) was measured by imaging four aluminum inserts of varying thickness, superimposed on a Lucite slab phantom using a pediatric abdominal protocol...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046829/mo-de-209-00-dbt-physics-basic-to-advanced
#15
Andrew D Maidment
: Digital Breast Tomosynthesis (DBT) is rapidly replacing mammography as the standard of care in breast cancer screening and diagnosis. DBT is a form of computed tomography, in which a limited set of projection images are acquired over a small angular range and reconstructed into tomographic data. The angular range varies from 15° to 50° and the number of projections varies between 9 and 25 projections, as determined by the equipment manufacturer. It is equally valid to treat DBT as the digital analog of classical tomography - that is, linear tomography...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28035301/brazilian-young-dental-practitioners-use-and-acceptance-of-digital-radiographic-examinations
#16
Karla Rovaris, Karla de Faria Vasconcelos, Eduarda Helena Leandro do Nascimento, Matheus Lima Oliveira, Deborah Queiroz Freitas, Francisco Haiter-Neto
PURPOSE: The aim of this study was to investigate the use and acceptance of digital radiographic examinations by Brazilian dental practitioners in daily practice and to evaluate the advances that have occurred over the past 5 years. MATERIALS AND METHODS: Dental practitioners enrolled in extension courses at the Piracicaba Dental School, University of Campinas, Brazil, responded to a self-administered questionnaire in the years 2011 and 2015. They were asked about sociodemographic factors and their knowledge and use of digital radiographic examinations...
December 2016: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28012492/guidelines-concordant-empiric-antimicrobial-therapy-and-mortality-in-patients-with-severe-community-acquired-pneumonia-requiring-mechanical-ventilation
#17
Yukiyo Sakamoto, Yasuhiro Yamauchi, Hideo Yasunaga, Hideyuki Takeshima, Wakae Hasegawa, Taisuke Jo, Hiroki Matsui, Kiyohide Fushimi, Takahide Nagase
BACKGROUND: Community-acquired pneumonia (CAP) has high morbidity and mortality among adults. Several clinical guidelines recommend prompt administration of combined antimicrobial therapy. However, the association between guidelines concordance and mortality in patients with severe pneumonia remains unclear. The present study aimed to examine the impact of guidelines-concordant empiric antimicrobial therapy on 7-day mortality in patients with extremely severe pneumonia who required mechanical ventilation at admission, using a nationwide inpatient database in Japan...
January 2017: Respiratory Investigation
https://www.readbyqxmd.com/read/27998923/alcohol-related-visits-to-us-emergency-departments-2001-2011
#18
Peter M Mullins, Maryann Mazer-Amirshahi, Jesse M Pines
AIMS: Alcohol intoxication is a source of significant illness and injury commonly resulting in emergency department (ED) visits. We characterize recent trends in alcohol-related visits to US EDs using nationally representative data. METHODS: We conducted a retrospective review of data on national ED visits among patients aged 18 years or older with alcohol intoxication between 2001 and 2011 using the National Hospital Ambulatory Medical Care Survey (NHAMCS). Demographic and resource utilization trends in alcohol-related visits were examined...
January 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/27975042/predictive-values-derived-from-lower-wisdom-teeth-developmental-stages-on-orthopantomograms-to-calculate-the-chronological-age-in-adolescence-and-young-adults-as-a-prerequisite-to-obtain-age-adjusted-informed-patient-consent-prior-to-elective-surgical-procedures
#19
Reinhard E Friedrich, Kirsten Schmidt, András Treszl, Jan F Kersten
Introduction: Surgical procedures require informed patient consent, which is mandatory prior to any procedure. These requirements apply in particular to elective surgical procedures. The communication with the patient about the procedure has to be comprehensive and based on mutual understanding. Furthermore, the informed consent has to take into account whether a patient is of legal age. As a result of large-scale migration, there are eventually patients planned for medical procedures, whose chronological age can't be assessed reliably by physical inspection alone...
2016: GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW
https://www.readbyqxmd.com/read/27965042/do-sanitary-ceramic-workers-have-a-worse-presentation-of-chest-radiographs-or-pulmonary-function-tests-than-other-ceramic-workers
#20
Yu-Chung Tsao, Su-Hsun Liu, I-Shiang Tzeng, Tsung-Han Hsieh, Jau-Yuan Chen, Jiin-Chyuan John Luo
BACKGROUND/PURPOSE: Silicosis remains the most prevalent occupational disease worldwide. There have been no specific studies focusing on the association between exposure settings at work and the clinical severity in silicosis patients. In this study, we describe and compare the clinical characteristics and silicosis-associated exposure history at work among workers from several types of ceramic production facilities in Taiwan. METHODS: We reviewed the medical records of 221 patients who were first diagnosed with silicosis at the Occupational Medicine Clinic of Northern Taiwan in 2012...
December 10, 2016: Journal of the Formosan Medical Association, Taiwan Yi Zhi
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