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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/29676964/advanced-imaging-techniques-in-evaluation-of-colorectal-cancer
#1
Roberto García-Figueiras, Sandra Baleato-González, Anwar R Padhani, Antonio Luna-Alcalá, Ana Marhuenda, Joan C Vilanova, Iria Osorio-Vázquez, Anxo Martínez-de-Alegría, Antonio Gómez-Caamaño
Imaging techniques are clinical decision-making tools in the evaluation of patients with colorectal cancer (CRC). The aim of this article is to discuss the potential of recent advances in imaging for diagnosis, prognosis, therapy planning, and assessment of response to treatment of CRC. Recent developments and new clinical applications of conventional imaging techniques such as virtual colonoscopy, dual-energy spectral computed tomography, elastography, advanced computing techniques (including volumetric rendering techniques and machine learning), magnetic resonance (MR) imaging-based magnetization transfer, and new liver imaging techniques, which may offer additional clinical information in patients with CRC, are summarized...
April 20, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29676963/pictorial-review-of-digital-radiography-artifacts
#2
Alisa I Walz-Flannigan, Kimberly J Brossoit, Dayne J Magnuson, Beth A Schueler
Visual familiarity with the variety of digital radiographic artifacts is needed to identify, resolve, or prevent image artifacts from creating issues with patient imaging. Because the mechanism for image creation is different between flat-panel detectors and computed radiography, the causes and appearances of some artifacts can be unique to these different modalities. Examples are provided of artifacts that were found on clinical images or during quality control testing with flat-panel detectors. The examples are meant to serve as learning tools for future identification and troubleshooting of artifacts and as a reminder for steps that can be taken for prevention...
April 20, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29652578/mr-imaging-of-the-fetal-face-comprehensive-review
#3
Murali Nagarajan, Kedar G Sharbidre, Sudeep H Bhabad, Sharon E Byrd
The human face is a complex anatomic structure with an equally complex embryologic development. Derangement of the developmental process can result in various structural anomalies, which range from a mainly cosmetic deformity, such as cleft lip, to potentially life-threatening conditions such as arhinia. These anomalies (a) can occur as isolated anomalies; (b) can be associated with intracranial, spinal, or dental anomalies; or (c) can be a part of various syndromes, thus serving as diagnostic clues in such cases...
April 13, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29652577/lung-cancers-associated-with-cystic-airspaces-underrecognized-features-of-early-disease
#4
Sarah Sheard, Joanna Moser, Charlie Sayer, Konstantinos Stefanidis, Anand Devaraj, Ioannis Vlahos
Early lung cancers associated with cystic airspaces are increasingly being recognized as a cause of delayed diagnoses-owing to data gathered from screening trials and encounters in routine clinical practice as more patients undergo serial imaging. Several morphologic subtypes of cancers associated with cystic airspaces exist and can exhibit variable patterns of progression as the solid elements of the tumor grow. Current understanding of the pathogenesis of these malignancies is limited, and the numbers of cases reported in the literature are small...
April 13, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29624482/automated-three-dimensional-breast-us-for-screening-technique-artifacts-and-lesion-characterization
#5
Jan C M van Zelst, Ritse M Mann
Automated breast (AB) ultrasonography (US) scanners have recently been brought to market for breast imaging. AB US devices use mechanically driven wide linear-array transducers that can image whole-breast US volumes in three dimensions. AB US is proposed for screening as a supplemental modality to mammography in women with dense breasts and overcomes important limitations of whole-breast US using handheld devices, such as operator dependence and limited reproducibility. A literature review of supplemental whole-breast US for screening was performed, which showed that both AB US and handheld US allow detection of mammographically negative early-stage invasive breast cancers but also increase the false-positive recall rate...
April 6, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29624481/craniofacial-manifestations-of-systemic-disorders-ct-and-mr-imaging-findings-and-imaging-approach
#6
V Carlota Andreu-Arasa, Margaret N Chapman, Hirofumi Kuno, Akifumi Fujita, Osamu Sakai
Many systemic diseases or conditions can affect the maxillofacial bones; however, they are often overlooked or incidentally found at routine brain or head and neck imaging performed for other reasons. Early identification of some conditions may significantly affect patient care and alter outcomes. Early recognition of nonneoplastic hematologic disorders, such as thalassemia and sickle cell disease, may help initiate earlier treatment and prevent serious complications. The management of neoplastic diseases such as lymphoma, leukemia, or Langerhans cell histiocytosis may be different if diagnosed early, and metastases to the maxillofacial bones may be the first manifestation of an otherwise occult neoplasm...
April 6, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29601266/tumors-in-von-hippel-lindau-syndrome-from-head-to-toe-comprehensive-state-of-the-art-review
#7
Dhakshinamoorthy Ganeshan, Christine O Menias, Perry J Pickhardt, Kumaresan Sandrasegaran, Meghan G Lubner, Preetha Ramalingam, Sanjeev Bhalla
Von Hippel-Lindau syndrome (VHL) is an autosomal-dominant hereditary tumor disease that arises owing to germline mutations in the VHL gene, located on the short arm of chromosome 3. Patients with VHL may develop multiple benign and malignant tumors involving various organ systems, including retinal hemangioblastomas (HBs), central nervous system (CNS) HBs, endolymphatic sac tumors, pancreatic neuroendocrine tumors, pancreatic cystadenomas, pancreatic cysts, clear cell renal cell carcinomas, renal cysts, pheochromocytomas, paragangliomas, and epididymal and broad ligament cystadenomas...
March 30, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29601265/coronary-artery-fistulas-pathophysiology-imaging-findings-and-management
#8
Gabin Yun, Tae Hyun Nam, Eun Ju Chun
Coronary artery fistulas (CAFs) are abnormal communications of coronary arteries whereby venous circuits bypass the normal capillaries within the myocardium. CAFs are rare, and most affected patients are asymptomatic. However, these fistulas are the most common coronary artery anomalies that can alter coronary hemodynamic parameters. Although most CAFs are asymptomatic in young patients, symptoms and complications become more frequent with increasing age. CAFs are characterized by variable clinical manifestations that are based on the size, origin, and drainage site of the fistula...
March 27, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757729/invited-commentary-early-lung-cancer-and-cystic-airspaces
#9
David F Yankelevitz
No abstract text is available yet for this article.
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757728/tumors-in-von-hippel-lindau-syndrome-from-head-to-toe-comprehensive-state-of-the-art-review
#10
Dhakshinamoorthy Ganeshan, Christine O Menias, Perry J Pickhardt, Kumaresan Sandrasegaran, Meghan G Lubner, Preetha Ramalingam, Sanjeev Bhalla
No abstract text is available yet for this article.
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757727/invited-commentary-handheld-or-automated-staying-focused-on-the-goals-of-screening-us-with-response-from-drs-van-zelst-and-mann
#11
Reni Simov Butler
No abstract text is available yet for this article.
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757726/mediastinal-and-pleural-mr-imaging-in-daily-practice
#12
Adriano M Priola, Andrea Veltri, Sandro M Priola
No abstract text is available yet for this article.
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757725/acute-mesenteric-ischemia-multidetector-ct-findings-and-endovascular-management
#13
Shuzo Kanasaki, Akira Furukawa, Kanako Fumoto, Yasuyo Hamanaka, Shinichi Ota, Tomohiro Hirose, Akitoshi Inoue, Takako Shirakawa, Linh Dai Hung Nguyen, Syerikjan Tulyeubai
Acute mesenteric ischemia is a rare life-threatening condition that accounts for approximately one in 1000 hospital admissions. The mortality rate is 50%-69% owing to the absence of specific symptoms and laboratory data, which makes early detection of this condition difficult. If the use of contrast material is possible, biphasic contrast material-enhanced multidetector computed tomography (CT) is the first-line imaging test for early diagnosis of the disease and for differentiation from other causes of acute abdomen...
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757724/neuroimaging-findings-of-organic-acidemias-and-aminoacidopathies
#14
Nihaal Reddy, Sonia F Calloni, Hilary J Vernon, Eugen Boltshauser, Thierry A G M Huisman, Bruno P Soares
Although individual cases of inherited metabolic disorders are rare, overall they account for a substantial number of disorders affecting the central nervous system. Organic acidemias and aminoacidopathies include a variety of inborn errors of metabolism that are caused by defects in the intermediary metabolic pathways of carbohydrates, amino acids, and fatty acid oxidation. These defects can lead to the abnormal accumulation of organic acids and amino acids in multiple organs, including the brain. Early diagnosis is mandatory to initiate therapy and prevent permanent long-term neurologic impairments or death...
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757723/ct-and-mr-imaging-features-of-artificial-urinary-sphincters-penile-prostheses-and-other-devices-in-the-male-lower-genitourinary-tract
#15
Elizabeth T Chorney, Parvati Ramchandani, William I Jaffe, Evan S Siegelman
Urinary incontinence and erectile dysfunction are relatively common conditions in the aging male population. Surgical interventions for urinary incontinence include placement of an artificial urinary sphincter (AUS), perineal sling, or sacral nerve stimulator and injections of periurethral bulking agents. Erectile dysfunction can be treated surgically with placement of a penile prosthesis. The complications of these devices can be broadly categorized as device component malposition, malfunction, and infection...
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757722/urethrography-for-assessment-of-the-adult-male-urethra-radiographics-fundamentals-online-presentation
#16
Jennifer C Flanagan, Richard Batz, Shaun M Nordeck, Gary E Lemack, Cecelia Brewington
No abstract text is available yet for this article.
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757721/spectrum-of-extratesticular-and-testicular-pathologic-conditions-at-scrotal-mr-imaging
#17
Pardeep K Mittal, Ahmed S Abdalla, Argha Chatterjee, Deborah A Baumgarten, Peter A Harri, Jay Patel, Courtney C Moreno, Helena Gabriel, Frank H Miller
Diagnostic workup of scrotal lesions should begin with a complete clinical history and physical examination, including analysis of risk factors such as family history of testicular cancer, personal history of tumor in the contralateral testis, and cryptorchidism, followed by imaging. Scrotal ultrasonography (US) with a combination of gray-scale and color Doppler techniques has been the first-line imaging modality for evaluation of testicular and extratesticular lesions because of its low cost, wide availability, and high diagnostic accuracy...
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757720/troubleshooting-image-quality-and-other-problems-by-using-the-dicom-header-radiographics-fundamentals-online-presentation
#18
William F Sensakovic, David R Warden, Matthew C Hough
No abstract text is available yet for this article.
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757719/providing-mr-imaging-for-cervical-cancer-brachytherapy-lessons-for-radiologists
#19
Thomas Sullivan, Joseph H Yacoub, Matthew M Harkenrider, William Small, Murat Surucu, Steven M Shea
Brachytherapy (BT), the use of a locally placed or implanted radioactive source for treatment of an adjacent tumor, is an important component in the treatment of patients with both early- and advanced-stage cervical cancer and is increasingly part of the standard treatment protocol. When it is feasible, many radiation oncologists choose to include a magnetic resonance (MR) imaging examination for planning BT treatment (ie, an MR imaging examination after placement of the applicator but before radiation dosing)...
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29757718/us-of-right-upper-quadrant-pain-in-the-emergency-department-diagnosing-beyond-gallbladder-and-biliary-disease
#20
Gayatri Joshi, Kevin A Crawford, Tarek N Hanna, Keith D Herr, Nirvikar Dahiya, Christine O Menias
Acute cholecystitis is the most common diagnosable cause for right upper quadrant abdominal (RUQ) pain in patients who present to the emergency department (ED). However, over one-third of patients initially thought to have acute cholecystitis actually have RUQ pain attributable to other causes. Ultrasonography (US) is the primary imaging modality of choice for initial imaging assessment and serves as a fast, cost-effective, and dynamic modality to provide a definitive diagnosis or a considerably narrowed list of differential possibilities...
May 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
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