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Radiographics: a Review Publication of the Radiological Society of North America, Inc

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https://www.readbyqxmd.com/read/29220207/mr-imaging-of-muscle-trauma-anatomy-biomechanics-pathophysiology-and-imaging-appearance
#1
Dyan V Flores, Catalina Mejía Gómez, Mauricio Estrada-Castrillón, Edward Smitaman, Mini N Pathria
Muscle is an important component of the muscle-tendon-bone unit, driving skeletal motion through contractions that alter the length of the muscle. The muscle and myotendinous junction (MTJ) are most commonly injured in the young adult, as a result of indirect mechanisms such as overuse or stretching, direct impact (penetrating or nonpenetrating), or dysfunction of the supporting connective tissues. Magnetic resonance (MR) imaging is widely used for assessment of muscle injuries. This review illustrates the MR imaging appearance of a broad spectrum of acute, subacute, and chronic traumatic lesions of muscle, highlighting the pathophysiology, biomechanics, and anatomic considerations underlying these lesions...
December 8, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29194009/bias-in-radiology-the-how-and-why-of-misses-and-misinterpretations
#2
Lindsay P Busby, Jesse L Courtier, Christine M Glastonbury
Medical errors are a leading cause of morbidity and mortality in the medical field and are substantial contributors to medical costs. Radiologists play an integral role in the diagnosis and care of patients and, given that those in this field interpret millions of examinations annually, may therefore contribute to diagnostic errors. Errors can be categorized as a "miss" when a primary or critical finding is not observed or as a "misinterpretation" when errors in interpretation lead to an incorrect diagnosis...
December 1, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29166217/the-radiologist-s-primer-to-imaging-the-noncuff-nonlabral-postoperative-shoulder
#3
Christopher R Smith, Jason T Yoon, Jeremiah R Long, Michael V Friedman, Travis J Hillen, James D Stensby
Many radiologists are familiar with the preoperative imaging assessment of patients with labral tears, rotator cuff abnormalities, and end-stage arthritis, as well as the subsequent primary reconstructions and repairs commonly encountered in routine clinical management. However, the second-line surgical procedures and augmentation procedures performed for refractory or recurrent shoulder instability and the extra-articular surgical procedures of the shoulder girdle may challenge even the most experienced musculoskeletal radiologist...
November 22, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320333/prostate-specific-membrane-antigen-pet-clinical-utility-in-prostate-cancer-normal-patterns-pearls-and-pitfalls
#4
Michael S Hofman, Rodney J Hicks, Tobias Maurer, Matthias Eiber
Prostate-specific membrane antigen (PSMA) is a transmembrane glycoprotein that is overexpressed in prostate cancer. Radiolabeled small molecules that bind with high affinity to its active extracellular center have emerged as a potential new diagnostic standard of reference for prostate cancer, resulting in images with extraordinary tumor-to-background contrast. Currently, gallium 68 (68Ga)-PSMA-11 (or HBED-PSMA) is the most widely used radiotracer for PSMA positron emission tomography (PET)/computed tomography (CT) or PSMA PET/magnetic resonance (MR) imaging...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320332/intraocular-medulloepithelioma-airp-best-cases-in-radiologic-pathologic-correlation
#5
Omar Z Ashour, Melissa Stalling, Jonathan Ramsey, Daniel G Straka, Christopher R Pierson, Lisa C Martin
Editor's Note.-RadioGraphics continues to publish radiologic-pathologic case material selected from the American Institute for Radiologic Pathology (AIRP) "best case" presentations. The AIRP conducts a 4-week Radiologic Pathology Correlation Course, which is offered five times per year. On the penultimate day of the course, the best case presentation is held at the American Film Institute Silver Theater and Cultural Center in Silver Spring, Md. The AIRP faculty identifies the best cases, from each organ system, brought by the resident attendees...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320331/neuromyelitis-optica-spectrum-disorders-spectrum-of-mr-imaging-findings-and-their-differential-diagnosis
#6
Bruna Garbugio Dutra, Antônio José da Rocha, Renato Hoffmann Nunes, Antônio Carlos Martins Maia
Neuromyelitis optica (NMO) is an autoimmune demyelinating disorder for which the aquaporin-4 (AQP4) water channels are the major target antigens. Advances in the understanding of NMO have clarified several points of its pathogenesis, clinical manifestations, and imaging patterns. A major advance was the discovery of the AQP4 antibody, which is highly specific for this disorder. Descriptions of new clinical and radiologic features in seropositive patients have expanded the spectrum of NMO, and the term NMO spectrum disorder (NMOSD) has been adopted...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320330/cardiovascular-manifestations-and-complications-of-loeys-dietz-syndrome-ct-and-mr-imaging-findings
#7
William W Loughborough, Kishore S Minhas, Jonathan C L Rodrigues, Stephen M Lyen, Helen E Burt, Nathan E Manghat, Marcus J Brooks, Graham Stuart, Mark C K Hamilton
Loeys-Dietz syndrome (LDS) is a recently described genetic connective tissue disorder with a wide spectrum of multisystem involvement. LDS is characterized by rapidly progressive aortic and peripheral arterial aneurysmal disease. LDS and the other inherited aortopathies such as Marfan syndrome have overlapping phenotypic features. However, LDS is characterized by a more aggressive vascular course; patient morbidity and mortality occur at an early age, with complications developing at relatively smaller aortic dimensions...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320329/ct-cystography-for-suspicion-of-traumatic-urinary-bladder-injury-indications-technique-findings-and-pitfalls-in-diagnosis-radiographics-fundamentals-online-presentation
#8
Gayatri Joshi, Eugene Y Kim, Tarek N Hanna, Cary L Siegel, Christine O Menias
No abstract text is available yet for this article.
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320328/twenty-five-diagnoses-on-midline-images-of-the-brain-from-fetus-to-child-to-adult
#9
Asim F Choudhri, Harris L Cohen, Adeel Siddiqui, Vijay Pande, Ari M Blitz
Midsagittal images of the brain provide a wealth of anatomic information and may show abnormalities that are pathognomonic for particular diagnoses. Using an anatomy-based approach, the authors identify pertinent anatomic structures to serve as a checklist when evaluating these structures. Subregions evaluated include the corpus callosum, pituitary gland and sellar region, pineal gland and pineal region, brainstem, and cerebellum. The authors present 25 conditions with characteristic identifiable abnormalities at midsagittal imaging...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320327/atypical-sites-of-deeply-infiltrative-endometriosis-clinical-characteristics-and-imaging-findings
#10
Luciana P Chamié, Duarte Miguel Ferreira Rodrigues Ribeiro, Dario A Tiferes, Augusto Cesar de Macedo Neto, Paulo C Serafini
Endometriosis is defined as the presence of endometrial tissue that is located outside the uterine cavity and associated with fibrosis and inflammatory reaction. It is a polymorphic and multifocal disease with no known cure or preventive mechanisms. Patients may be asymptomatic or may experience chronic pelvic pain, dysmenorrhea, dyspareunia, or infertility. The pelvic cavity is the most common location for endometriotic implants, which usually affect the retrocervical space, ovaries, vagina, rectosigmoid colon, bladder dome, and round ligaments...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320326/mediastinal-and-pleural-mr-imaging-practical-approach-for-daily-practice
#11
Constantine A Raptis, Sebastian R McWilliams, Kristy L Ratkowski, Jordi Broncano, Daniel B Green, Sanjeev Bhalla
Radiologists in any practice setting should be prepared to use thoracic magnetic resonance (MR) imaging for noncardiac and nonangiographic applications. This begins with understanding the sequence building blocks that can be used to design effective thoracic MR imaging protocols. In most instances, the sequences used in thoracic MR imaging are adapted from protocols used elsewhere in the body. Some modifications, including the addition of electrocardiographic gating or respiratory triggering, may be necessary for certain applications...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320325/diseases-involving-the-central-bronchi-multidetector-ct-for-detection-characterization-and-differential-diagnosis
#12
Marie-Michele Theriault, Kathleen Eddy, Joy N Borgaonkar, Judith L Babar, Daria Manos
No abstract text is available yet for this article.
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320324/spectrum-of-coronary-artery-aneurysms-from-the-radiologic-pathology-archives
#13
Jean Jeudy, Charles S White, Seth J Kligerman, Jonathan L Killam, Allen P Burke, Jacob W Sechrist, Amar B Shah, Rydhwana Hossain, Aletta Ann Frazier
Advances in medical diagnosis reveal that coronary artery aneurysms (CAAs) may develop in several clinical scenarios and manifest variable symptoms, imaging appearances, and outcomes. Aneurysms are pathologically classified into three groups: atherosclerotic, inflammatory, and noninflammatory. The last category is associated with congenital, inherited, and connective tissue disorders. Overlap exists among the groups, because secondary atherosclerotic change may be present in an aneurysm of any cause. Atherosclerosis is the most common cause of CAAs in adults, and inflammation is considered the underlying mechanism...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320323/multimodality-imaging-including-dual-energy-ct-in-the-evaluation-of-gallbladder-disease
#14
Lisa Ratanaprasatporn, Jennifer W Uyeda, Jeremy R Wortman, Ian Richardson, Aaron D Sodickson
Imaging of the gallbladder has a key role in the examination of patients with abdominal pain-especially pain localized to the right upper quadrant. Pathologic conditions that affect the gallbladder include cholelithiasis and associated complications such as acute and chronic cholecystitis, choledocholithiasis, gallstone pancreatitis, and cancer. Modalities used to image the gallbladder include ultrasonography (US), computed tomography (CT), magnetic resonance (MR) imaging, and nuclear scintigraphy. US is the primary imaging modality used to evaluate entities suspected of being gallbladder disease, as it is both sensitive and specific for demonstrating gallstones, biliary duct dilatation, and inflammatory features...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320322/multidetector-ct-of-midfacial-fractures-classification-systems-principles-of-reduction-and-common-complications
#15
David Dreizin, Arthur J Nam, Silviu C Diaconu, Mark P Bernstein, Uttam K Bodanapally, Felipe Munera
The advent of titanium hardware, which provides firm three-dimensional positional control, and the exquisite bone detail afforded by multidetector computed tomography (CT) have spurred the evolution of subunit-specific midfacial fracture management principles. The structural, diagnostic, and therapeutic complexity of the individual midfacial subunits, including the nose, the naso-orbito-ethmoidal region, the internal orbits, the zygomaticomaxillary complex, and the maxillary occlusion-bearing segment, are not adequately reflected in the Le Fort classification system, which provides only a general framework and has become less relevant in contemporary practice...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320321/writing-good-true-false-questions-a-brief-guide-for-radiologists
#16
David J DiSantis
This guide provides a brief how-to compilation of widely accepted recommendations for creating good true-false questions for self-assessment continuing medical education exercises.
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320320/mr-imaging-and-cochlear-implants-with-retained-internal-magnets-reducing-artifacts-near-highly-inhomogeneous-magnetic-fields
#17
Heidi A Edmonson, Matthew L Carlson, Alice C Patton, Robert E Watson
The number of patients receiving cochlear implants and auditory brainstem implants for severe to profound sensorineural hearing loss has rapidly increased. These implants consist of an internal component implanted between the skull and the temporal scalp and an external removable speech processor unit. A small magnet within the internal component is commonly used to hold the external speech processor unit in place. Several cochlear implant models have recently received U.S. Food and Drug Administration and European Economic Area regulatory approval to allow magnetic resonance (MR) imaging examinations to be performed under certain specified conditions...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320319/coronary-artery-aneurysm-formation-kawasaki-disease-versus-atherosclerosis
#18
Aletta Ann Frazier
No abstract text is available yet for this article.
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320318/invited-commentary-on-mediastinal-and-pleural-mr-imaging-practical-approach-for-daily-practice
#19
Jeanne B Ackman
No abstract text is available yet for this article.
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29320316/translabial-us-and-dynamic-mr-imaging-of-the-pelvic-floor-normal-anatomy-and-dysfunction
#20
Luciana P Chamié, Duarte Miguel Ferreira Rodrigues Ribeiro, Angela H M Caiado, Gisele Warmbrand, Paulo C Serafini
Pelvic floor dysfunction (PFD) is a common condition that typically affects women older than 50 years and decreases the quality of life. Weakening of support structures can involve all three pelvic compartments and cause a combination of symptoms, including constipation, urinary and fecal incontinence, obstructed defecation, pelvic pain, perineal bulging, and sexual dysfunction. The causes of PFD are complex and multifactorial; however, vaginal delivery is considered a major predisposing factor. Physical examination alone is limited in the evaluation of PFD; it frequently leads to an underestimation of the involved compartments...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
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