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https://www.readbyqxmd.com/read/29906239/an-investigation-into-the-validity-of-utilising-the-cdrad-2-0-phantom-for-optimisation-studies-in-digital-radiography
#1
Sadeq Al-Murshedi, Peter Hogg, Andrew England
OBJECTIVES: To determine if a relationship exists between low contrast detail (LCD) detectability using the CDRAD 2.0 phantom, visual measures of image quality (IQ) and simulated lesion visibility (LV) when performing digital chest radiography (CXR). METHODS: Using a range of acquisition parameters, a CDRAD 2.0 phantom was used to acquire a set of images with different levels of image quality. LCD detectability using the CDRAD 2.0 phantom, represented by an image quality figure inverse (IQFinv ) metric, was determined using the phantom analyser software...
June 15, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29900890/latent-tuberculosis-infection-among-patients-with-coronary-artery-stenosis-a-case-control-study
#2
Ahmad Farooq Alsayed Hasanain, Khalid M El-Maghraby, Ali A H Zayed, Amany M A Nafee, Sherif M Abdel-Aal, Sally M Bakkar
Background: The activation of the cell-mediated immune responses by Mycobacterium tuberculosis can promote atherogenesis. Aims: The aim of this study is to determine the frequency of latent tuberculosis infection (LTBI) among patients with coronary artery stenosis (CAS) and to explore the association between LTBI and development of CAS. We conducted a case-control study which included 183 patients' who underwent percutaneous coronary angiography (121 patients with CAS and 62 patients without as a control group)...
April 2018: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/29807546/surgical-plate-fixation-of-multiple-rib-fractures-a-case-report
#3
Konstantin Mitev, Dashurie Neziri, Emil Stoicovski, Zan Mitrev
BACKGROUND: The healthcare system in developing countries is limited; particularly, medical specialties such as emergency and trauma medicine are underdeveloped. Consequently, trauma injuries sustained in traffic accidents result in chronic morbidity more often than similar cases in developed countries. Multiple rib fractures induce significant patient morbidity. Current international guidelines recommend a multidisciplinary, surgery-based treatment approach to achieve optimal clinical benefit...
May 29, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29800709/a-novel-in-vivo-large-animal-model-of-lumbar-spinal-joint-degeneration
#4
Tian Wang, Matthew H Pelletier, Chris Christou, Rema Oliver, Ralph J Mobbs, William R Walsh
BACKGROUND CONTEXT: Degenerative disc disease (DDD) is a common, widespread socio-economic problem. Appropriate large animal models of DDD are required for improved understanding and to serve as pre-clinical test beds for therapeutic strategies PURPOSE: Evaluate the effects of short and medium duration immobilization on the sheep lumbar intervertebral disc and facet joints, to establish a large animal model for DDD research. STUDY DESIGN: An in vivo sheep model evaluating the effect of short and medium term immobilization on disc degeneration...
May 22, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29774949/the-critical-shoulder-angle-acromial-coverage-is-more-relevant-than-glenoid-inclination
#5
Silvan Beeler, Anita Hasler, Tobias Götschi, Dominik C Meyer, Christian Gerber
It is still unknown whether glenoid inclination or lateral acromial roof extension is a more important determinant for development of rotator cuff tears (RCT) or osteoarthritis (OA) of the shoulder. It was the purpose of this study, to evaluate whether there is a potential predominance of one of these factors in pathogenesis of RCT or concentric OA. We analyzed 70 shoulders with advanced degenerative RCT and 54 shoulders with concentric OA undergoing primary shoulder arthroplasty (anatomical or reverse) using antero-posterior radiography and multiplanar computed tomography...
May 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29771187/advanced-stage-breast-cancer-is-associated-with-catheter-tip-thrombus-formation-following-implantable-central-venous-port-placement
#6
Mina S Makary, Alexander Lionberg, Mamdouh Khayat, Maryam B Lustberg, Jamal AlTaani, Xueliang J Pan, Richard R Layman, Subha V Raman, Rachel M Layman, Joshua D Dowell
Purpose Catheter-tip associated thrombosis is not uncommon in patients with implantable central venous ports; however, the prevalence and clinical impact of this complication on patient management is unclear. This study aims to identify risk factors for thrombus formation in a large population receiving serial echocardiograms (echo) following port placement. Methods A total of 396 female breast cancer patients underwent internal jugular vein chest port placement between 2007 and 2013 and received echo studies every third month...
January 1, 2018: Phlebology
https://www.readbyqxmd.com/read/29766250/juvenile-idiopathic-arthritis-the-role-of-imaging-from-a-rheumatologist-s-perspective
#7
REVIEW
Clara Malattia, Nikolay Tzaribachev, J Merlijn van den Berg, Silvia Magni-Manzoni
Alongside recent advances in treatment strategies for juvenile idiopathic arthritis (JIA), paediatric rheumatologists have taken increasing interest in the use of imaging. Magnetic resonance imaging (MRI) and musculoskeletal ultrasound, by providing more detailed information on disease activity than clinical examination and conventional radiography (CR), have become helpful diagnostic and managerial tools. The growing skeleton, however, with changing appearances over time, is still challenging in the establishment of valid scoring systems for pathological changes...
June 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29754440/indications-and-interpretation-of-esophageal-function-testing
#8
REVIEW
C Prakash Gyawali, Nicola de Bortoli, John Clarke, Carla Marinelli, Salvatore Tolone, Sabine Roman, Edoardo Savarino
Esophageal symptoms are common, and can arise from mucosal, motor, functional, and neoplastic processes, among others. Judicious use of diagnostic testing can help define the etiology of symptoms and can direct management. Endoscopy, esophageal high-resolution manometry (HRM), ambulatory pH or pH-impedance manometry, and barium radiography are commonly used for esophageal function testing; functional lumen imaging probe is an emerging option. Recent consensus guidelines have provided direction in using test findings toward defining mechanisms of esophageal symptoms...
May 12, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29752462/the-role-of-radiography-and-mri-for-eligibility-assessment-in-dmoad-trials-of-knee-oa
#9
REVIEW
Frank W Roemer, C Kent Kwoh, Daichi Hayashi, David T Felson, Ali Guermazi
Currently, no disease-modifying osteoarthritis drugs (DMOADs) have been approved. Past clinical trials have failed for several reasons, including the commonly applied definition of eligibility based on radiographic assessment of joint structure. In the context of precision medicine, finding the appropriate patient for a specific treatment approach will be of increasing relevance. Phenotypic stratification by use of imaging at the time of determining eligibility for clinical trials will be paramount and cannot be achieved using radiography alone...
June 2018: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/29738680/autologous-osteochondral-mosaicplasty-for-centrally-and-laterally-located-advanced-capitellar-osteochondritis-dissecans-in-teenage-athletes-clinical-outcomes-radiography-and-magnetic-resonance-imaging-findings
#10
Tadanao Funakoshi, Daisuke Momma, Yuki Matsui, Tamotsu Kamishima, Yuichiro Matsui, Daisuke Kawamura, Yusuke Nagano, Norimasa Iwasaki
BACKGROUND: Autologous osteochondral mosaicplasty (ie, mosaicplasty) results in satisfactory clinical outcomes and reliable return to play for patients with large or unstable lesions due to osteochondritis dissecans (OCD) of the humeral capitellum. However, the association between the healing of the reconstructed cartilage and clinical outcomes remains unclear. PURPOSE: To evaluate the efficacy of mosaicplasty in teenage athletes through use of clinical scores and imaging...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29719428/factors-associated-with-imaging-in-patients-with-early-breast-cancer-after-initial-treatment
#11
K Enright, T Desai, R Sutradhar, A Gonzalez, M Powis, N Taback, C M Booth, M E Trudeau, M K Krzyzanowska
Background: Overuse of surveillance imaging in patients after curative treatment for early breast cancer (ebc) was recently identified as one of the Choosing Wisely Canada initiatives to improve the quality of cancer care. We undertook a population-level examination of imaging practices in Ontario as they existed before the launch of that initiative. Methods: Patients diagnosed with ebc between 2006 and 2010 in Ontario were identified from the Ontario Cancer Registry...
April 2018: Current Oncology
https://www.readbyqxmd.com/read/29701428/anaesthetic-management-in-a-duchennne-muscle-dystrophy-patient-for-treatment-of-recurrent-pneumothorax
#12
Sara Mota, Liuba Germanova, Joana Cortesão, Teresa Paiva
INTRODUCTION: Duchenne muscular dystrophy (DMD) is an x linked recessive disorder. Long term prognosis is ominous, with development of respiratory distress and cardiomyopathy in advanced stage of the disease and expected death in the teens-to-mid 20s due to respiratory or cardiac failure. Peri-operative management of this patients is challenging due to difficult airway anatomy (macroglossia, limited neck and mandibular mobility). Additionally, they are at risk of developing malignant hyperthermia, rhabdomyolysis and hyperkalemic cardiac arrest when exposed to halogenated inhalational anaesthetics and depolarizing muscle relaxants...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29672804/imaging-features-of-the-juvenile-inflammatory-arthropathies
#13
Iwona Sudoł-Szopińska, Lennart Jans, Anne Grethe Jurik, Robert Hemke, Iris Eshed, Nathalie Boutry
We discuss the imaging of several juvenile inflammatory arthropathies including juvenile idiopathic arthritis, juvenile systemic lupus erythematosus, juvenile scleroderma, juvenile dermatomyositis, and chronic recurrent multifocal osteomyelitis. Juvenile idiopathic arthritis is the most common autoimmune chronic systemic disease of connective tissue in children. The remaining systemic juvenile connective tissue diseases are rare. However, they require early diagnosis and initiation of treatment to prevent injury, not only to the musculoskeletal system but also to the internal organs, and even death...
April 2018: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/29670000/bone-cell-activity-in-clinical-prostate-cancer-bone-metastasis-and-its-inverse-relation-to-tumor-cell-androgen-receptor-activity
#14
Annika Nordstrand, Erik Bovinder Ylitalo, Elin Thysell, Emma Jernberg, Sead Crnalic, Anders Widmark, Anders Bergh, Ulf H Lerner, Pernilla Wikström
Advanced prostate cancer frequently metastasizes to bone and induces a mixed osteoblastic/osteolytic bone response. Standard treatment for metastatic prostate cancer is androgen-deprivation therapy (ADT) that also affects bone biology. Treatment options for patients relapsing after ADT are limited, particularly in cases where castration-resistance does not depend on androgen receptor (AR) activity. Patients with non-AR driven metastases may, however, benefit from therapies targeting the tumor microenvironment...
April 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29622327/imaging-gently
#15
REVIEW
Amy L Puchalski, Christyn Magill
Advances in medical imaging are invaluable in the care of pediatric patients in the emergent setting. The diagnostic accuracy offered by studies using ionizing radiation, such as plain radiography, computed tomography, and fluoroscopy, are not without inherent risks. This article reviews the evidence supporting the risk of ionizing radiation from medical imaging as well as discusses clinical scenarios in which clinicians play an important role in supporting the judicious use of imaging studies.
May 2018: Emergency Medicine Clinics of North America
https://www.readbyqxmd.com/read/29589457/-hirschsprungs-disease-in-adults-two-case-reports-and-review-of-the-literature
#16
R Škába, J Hoch, Z Jech, M Kynčl, V Campr
Hirschsprungs disease (HD) in adults is extremely rare, only three publications in Czech and Czechoslovak journals making reference to the condition after childhood. We present two cases of adult patients with HD. The first case is a 46-year-old male patient suffering from chronic constipation since childhood and diagnosed with megacolon at the age of 16; however, no further detailed diagnosis was done. At the age of 41, he developed a sigmoid perforation due to fecaloma and underwent urgent rectosigmoid resection and colostomy...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29580818/tuberculosis-advances-and-challenges-in-development-of-new-diagnostics-and-biomarkers
#17
REVIEW
Gerhard Walzl, Ruth McNerney, Nelita du Plessis, Matthew Bates, Timothy D McHugh, Novel N Chegou, Alimuddin Zumla
Tuberculosis remains the leading cause of death from an infectious disease worldwide. Early and accurate diagnosis and detection of drug-sensitive and drug-resistant tuberculosis is essential for achieving global tuberculosis control. Despite the introduction of the Xpert MTB/RIF assay as the first-line rapid tuberculosis diagnostic test, the gap between global estimates of incidence and new case notifications is 4·1 million people. More accurate, rapid, and cost-effective screening tests are needed to improve case detection...
March 23, 2018: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29570372/acute-fracture-of-the-anterior-process-of-calcaneus-does-it-herald-a-more-advanced-injury-to-chopart-joint
#18
Anna Hirschmann, William R Walter, Erin F Alaia, Elisabeth Garwood, Felix Amsler, Zehava S Rosenberg
OBJECTIVE: Injuries at the calcaneocuboid and talonavicular joint have been described as two distinct, unrelated entities in the radiology literature. Our purpose was to assess the coexistence of these injuries using radiography and MRI and to correlate our findings with radiologic and clinical diagnoses. MATERIALS AND METHODS: Twenty-one patients with injury at the anterior calcaneal process on radiographs or MR images were retrospectively assessed for concomitant injury at the talonavicular joint...
May 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29565675/composite-assessment-of-power-doppler-ultrasonography-and-mri-in-rheumatoid-arthritis-a-pilot-study-of-predictive-value-in-radiographic-progression-after-one-year
#19
Motoshi Fujimori, Tamotsu Kamishima, Masaru Kato, Yumika Seno, Kenneth Sutherland, Hiroyuki Sugimori, Mutsumi Nishida, Tatsuya Atsumi
OBJECTIVE: Power Doppler ultrasonography (PDUS) and MRI are independently useful to predict structural damage in patients with rheumatoid arthritis (RA). We hypothesize that there is a complementary relationship between these modalities. The aim of this study is, therefore, to investigate the usefulness of the predictive value of composite assessment of PDUS and contrast-enhanced MRI in radiographic outcomes in patients with RA. METHODS: 20 patients (17 females and 3 males) with RA on disease-modifying antirheumatic drugs underwent PDUS and MRI of both hands at baseline...
April 10, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29565673/dependency-of-image-quality-on-acquisition-protocol-and-image-processing-in-chest-tomosynthesis-a-visual-grading-study-based-on-clinical-data
#20
Masoud Jadidi, Magnus Båth, Sven Nyrén
OBJECTIVE: To compare the quality of images obtained with two different protocols with different acquisition time and the influence from image post processing in a chest digital tomosynthesis (DTS) system. METHODS: 20 patients with suspected lung cancer were imaged with a chest X-ray equipment with tomosynthesis option. Two examination protocols with different acquisition times (6.3 and 12 s) were performed on each patient. Both protocols were presented with two different image post-processing (standard DTS processing and more advanced processing optimised for chest radiography)...
April 9, 2018: British Journal of Radiology
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