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https://www.readbyqxmd.com/read/29031172/a-parapharyngeal-space-schwannoma-arising-from-the-vagus-nerve-a-case-report
#1
Conor Carroll, Manish Jagatiya, Dia Kamel, Jamal Siddiqi
INTRODUCTION: Tumours of the parapharyngeal space are rare. Only 0.5% of head and neck tumours occur in this space. Surgical excision of parapharyngeal space lesions is challenging because of the anatomical complexity of the area. PRESENTATION OF CASE: A 31-year-old male patient was referred by his general dental practitioner for removal of lower wisdom teeth due to multiple episodes of pericoronitis. At the initial examination, an incidental finding was made of a large fluctuant posterior oropharyngeal swelling...
October 5, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29031099/shear-wave-elastography-for-characterization-of-breast-lesions-shearlet-transform-and-local-binary-pattern-histogram-techniques
#2
U Rajendra Acharya, Wei Lin Ng, Kartini Rahmat, Vidya K Sudarshan, Joel E W Koh, Jen Hong Tan, Yuki Hagiwara, Arkadiusz Gertych, Farhana Fadzli, Chai Hong Yeong, Kwan Hoong Ng
Shear wave elastography (SWE) examination using ultrasound elastography (USE) is a popular imaging procedure for obtaining elasticity information of breast lesions. Elasticity parameters obtained through SWE can be used as biomarkers that can distinguish malignant breast lesions from benign ones. Furthermore, the elasticity parameters extracted from SWE can speed up the diagnosis and possibly reduce human errors. In this paper, Shearlet transform and local binary pattern histograms (LBPH) are proposed as an original algorithm to differentiate malignant and benign breast lesions...
October 2, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29029109/early-diagnosis-of-acute-coronary-syndrome
#3
Hugo Katus, André Ziegler, Okan Ekinci, Evangelos Giannitsis, Wendy Gattis Stough, Stephan Achenbach, Stefan Blankenberg, Martina Brueckmann, Paul Collinson, Dorin Comaniciu, Filippo Crea, Wilfried Dinh, Grégory Ducrocq, Frank A Flachskampf, Keith A A Fox, Matthias G Friedrich, Kathy A Hebert, Anders Himmelmann, Mark Hlatky, Dominik Lautsch, Bertil Lindahl, Daniel Lindholm, Nicholas L Mills, Giorgio Minotti, Martin Möckel, Torbjørn Omland, Véronique Semjonow
The diagnostic evaluation of acute chest pain has been augmented in recent years by advances in the sensitivity and precision of cardiac troponin assays, new biomarkers, improvements in imaging modalities, and release of new clinical decision algorithms. This progress has enabled physicians to diagnose or rule-out acute myocardial infarction earlier after the initial patient presentation, usually in emergency department settings, which may facilitate prompt initiation of evidence-based treatments, investigation of alternative diagnoses for chest pain, or discharge, and permit better utilization of healthcare resources...
October 3, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29029074/multimodality-imaging-evaluation-of-chagas-disease-an-expert-consensus-of-brazilian-cardiovascular-imaging-department-dic-and-the-european-association-of-cardiovascular-imaging-eacvi
#4
Maria Carmo P Nunes, Luigi Paolo Badano, J Antonio Marin-Neto, Thor Edvardsen, Covadonga Fernández-Golfín, Chiara Bucciarelli-Ducci, Bogdan A Popescu, Richard Underwood, Gilbert Habib, Jose Luis Zamorano, Roberto Magalhães Saraiva, Ester Cerdeira Sabino, Fernando A Botoni, Márcia Melo Barbosa, Marcio Vinicius L Barros, Eduardo Falqueto, Marcus Vinicius Simões, André Schmidt, Carlos Eduardo Rochitte, Manoel Otávio Costa Rocha, Antonio Luiz Pinho Ribeiro, Patrizio Lancellotti
Aims: To develop a document by Brazilian Cardiovascular Imaging Department (DIC) and the European Association of Cardiovascular Imaging (EACVI) to review and summarize the most recent evidences about the non-invasive assessment of patients with Chagas disease, with the intent to set up a framework for standardized cardiovascular imaging to assess cardiovascular morphologic and functional disturbances, as well as to guide the subsequent process of clinical decision-making. Methods and results: Chagas disease remains one of the most prevalent infectious diseases in Latin America, and has become a health problem in non-endemic countries...
September 25, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29028783/three-dimensional-transesophageal-echocardiography-in-the-guide-of-cardiac-mass-biopsy-future-prospectives
#5
Daniela Di Lisi, Donatella Raspante, Vincenzo Lavanco, Mirko Curzi, Francesca Macaione, Massimo Cavallaro, Riccardo Tona, Giuseppina Novo, Salvatore Novo, Renato M Bragato
: Cardiac tumors are rare. Cardiovascular imaging is more important in the differential diagnosis of cardiac masses but no current noninvasive diagnostic tool has the ability to absolutely diagnose cardiac tumors. In effect cardiac biopsy remains the gold standard in the differential diagnosis. In our case we show the advantages of three-dimensional (3D) transesophageal echocardiography as a guide for cardiac biopsy. We believe that 3D TEE is ready to be used in the guide of cardiac mass biopsy. Once interventionalists become confident with 3D imaging, this technique should be used routinely during these procedures...
October 11, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29028758/mr-neurography-of-lumbosacral-plexus-in-failed-back-surgery-syndrome
#6
Riham Dessouky, Mohammed Khaleel, Dalia N Khalifa, Hazim I Tantawy, Avneesh Chhabra
STUDY DESIGN: Retrospective clinical case series. OBJECTIVE: To study the role of MRN of lumbosacral plexus in management of patients with FBSS. SUMMARY OF BACKGROUND DATA: Failed back surgery syndrome (FBSS) is one of the major problems in health care, affecting up to 40% of patients following spine surgery. To date, no imaging modality has been used to effectively classify nerve compression, since nerve injuries are challenging to detect on conventional lumbar spine MRI...
October 12, 2017: Spine
https://www.readbyqxmd.com/read/29028584/diagnosis-and-treatment-options-for-sequelae-following-radiation-treatment-of-brain-tumors
#7
REVIEW
Swapnil Mehta, Aatman Shah, Henry Jung
Radiation serves an important role in the treatment of metastatic and primary brain tumors. Radiation carries a risk of post radiation treatment effects, such as pseudoprogression and radiation necrosis. The ability to differentiate between radiation necrosis, pseudoprogression, and tumor recurrence remains a diagnostic conundrum with varying treatment options. In this review, we will discuss the pathophysiology, diagnostic imaging modalities, and treatments of these post-radiation treatment effects. We focus on the latest developments in magnetic resonance imaging (MRI) modalities including imaging biomarkers and the newest therapeutics such as VEGF inhibitors, Hyperbaric Oxygen Therapy, sensitized cytotoxic T cells, and Laser Interstitial Thermal Therapy (LITT)...
October 7, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29028423/2016-updates-to-the-who-brain-tumor-classification-system-what-the-radiologist-needs-to-know
#8
Derek R Johnson, Julie B Guerin, Caterina Giannini, Jonathan M Morris, Lawrence J Eckel, Timothy J Kaufmann
Radiologists play a key role in brain tumor diagnosis and management and must stay abreast of developments in the field to advance patient care and communicate with other health care providers. In 2016, the World Health Organization (WHO) released an update to its brain tumor classification system that included numerous significant changes. Several previously recognized brain tumor diagnoses, such as oligoastrocytoma, primitive neuroectodermal tumor, and gliomatosis cerebri, were redefined or eliminated altogether...
October 13, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29028358/posterior-tibial-translation-measurements-on-magnetic-resonance-imaging-improve-diagnostic-sensitivity-for-chronic-posterior-cruciate-ligament-injuries-and-graft-tears
#9
Nicholas N DePhillipo, Mark E Cinque, Jonathan A Godin, Gilbert Moatshe, Jorge Chahla, Robert F LaPrade
BACKGROUND: Magnetic resonance imaging (MRI) of the knee is a highly sensitive and specific method for diagnosing acute posterior cruciate ligament (PCL) tears, with a reported accuracy of 96% to 100%. In chronic and revision settings, these injuries may be missed on MRI because of the apparent continuity of nonfunctional PCL fibers. Posterior tibial translation (PTT) of the medial compartment has been identified as a potential secondary finding of PCL tear on routine MRI. Purpose/Hypothesis: The purpose of this study was to evaluate the sensitivity of PTT on MRI associated with PCL injuries and compare it with the sensitivity of a radiologist's MRI interpretation with preoperative posterior knee stress radiographs as the gold standard...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29028311/radiolabeled-antibody-conjugated-manganese-oxide-nanoparticles-for-tumor-vasculature-targeted-positron-emission-tomography-and-magnetic-resonance-imaging
#10
Yonghua Zhan, Sixiang Shi, Emily B Ehlerding, Stephen A Graves, Shreya Goel, Jonathan W Engle, Jimin Liang, Jie Tian, Weibo Cai
Manganese oxide nanoparticles (Mn3O4 NPs) have attracted a great deal of attention in the field of biomedical imaging because of their ability to create an enhanced imaging signal in MRI as novel potent T1 contrast agents. In this study, we present tumor vasculature-targeted imaging in mice using Mn3O4 NPs through conjugation to the anti-CD105 antibody TRC105 and radionuclide copper-64 ((64)Cu, t1/2: 12.7 h). The Mn3O4 conjugated NPs, (64)Cu-NOTA-Mn3O4@PEG-TRC105, exhibited sufficient stability in vitro and in vivo...
October 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29028140/report-of-12-cases-with-tracheobronchial-mucormycosis-and-a-review
#11
Ruoxi He, Chengping Hu, Yongjun Tang, Huaping Yang, Liming Cao, Ruichao Niu
OBJECTIVES: Tranchobronchial mucormycosis is a rare and invasive pulmonary mucormycosis involving the tracheobronchial tree. DATA SOURCE: at a 3500-bed tertiary care center. STUDY SELECTION: This was a retroactive study of 12 cases of tranchobronchial mucormycosis diagnosed in our hospital, and 48 cases that were previously reported in the English literature. RESULTS: Rhizopus was the predominant species of pathogen (66...
October 13, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29028105/value-of-confocal-laser-endomicroscopy-in-the-diagnosis-of-vocal-cord-lesions
#12
M Goncalves, H Iro, A Dittberner, A Agaimy, C Bohr
OBJECTIVE: The aim of this study was to assess the reliability and limitations of confocal laser endomicroscopy (CLE) for diagnosing lesions of the vocal cords and differentiating malignant from non-malignant lesions. PATIENTS AND METHODS: During microlaryngoscopy, the vocal cords were scanned by probe-based CLE (pCLE: a GastroFlex probe with the Cellvizio® laser system, Mauna Technologies, Paris, France). The video recordings were analyzed and compared with the histological results...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29028087/axillary-ectopic-lobular-carcinoma-of-breast-two-rare-case-reports
#13
A Conversi, M L Meggiorini, P Fino, G Soda, N Scuderi, M G Onesti
OBJECTIVE: The presence of ectopic or supernumerary breast tissue is a rare event, related to a not complete regression of breast tissue along the milk line. Primary ectopic breast cancer of the axilla can create many difficulties in differential diagnosis with subsequent delayed specific treatments. The incidence of ectopic breast tissue is 0.2-6%, and the axilla is the most common site involved. In this tissue, the same physiologic and pathologic changes as seen in ectopic breast tissue may occur, including carcinoma formation...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29027718/hypervascular-retained-product-of-conception-characteristic-magnetic-resonance-imaging-and-possible-relationship-to-placental-polyp-and-pseudoaneurysm
#14
Yuji Shiina, Takatomo Itagaki, Hiroya Ohtake
The cases of two patients who developed myometrial vascularization following dilatation and curettage are described. In case 1, pathological diagnosis was possible with the resected specimens. This patient had hypervascular retained products of conception (RPOC). In case 2, the natural course of this pathological condition was observed, confirming a process of regression during repeated withdrawal bleeding. The three principal magnetic resonance imaging (MRI) findings in these cases were: (i) presence of a remnant; (ii) breaking of the junctional zone in contact with the remnant; and (iii) vascularization/flow voids infiltrating into the myometrium from the broken junctional zone...
October 13, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29027590/diagnostic-utility-of-combined-retinal-ganglion-cell-count-estimates-in-japanese-glaucoma-patients
#15
Mari Sakamoto, Sotaro Mori, Kaori Ueda, Azusa Akashi, Yukako Inoue, Takuji Kurimoto, Akiyasu Kanamori, Yuko Yamada, Makoto Nakamura
PURPOSE: To assess the combined estimate of retinal ganglion cell (RGC) count developed by Medeiros et al. as a tool for diagnosis of glaucoma in Japanese patients. STUDY DESIGN: Cross-sectional study. METHODS: Thirty-one eyes of 19 healthy controls and 106 eyes of 70 glaucoma patients underwent standard automated perimetry (SAP) and three types of spectral domain optical coherence tomography (SD-OCT) imaging using the Cirrus, RTVue, and 3D-OCT instruments...
October 13, 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29027568/-diagnostics-and-treatment-of-acromegaly-necessity-for-targeted-monitoring-of-comorbidities
#16
S Petersenn, M Christ-Crain, M Droste, R Finke, J Flitsch, I Kreitschmann-Andermahr, A Luger, J Schopohl, G Stalla
Acromegaly is a rare and severe condition, presenting with typical signs and symptoms. The diagnosis is often initially made years after the first manifestations of the disease. In more than 99% of patients the disease is caused by a benign pituitary tumor that secretes growth hormone (GH). The diagnosis is based on the presence of increased insulin-like growth factor 1 (IGF-1) levels and a lack of GH suppression in the oral glucose tolerance test. The standard imaging procedure for tumor detection is magnetic resonance imaging in the region of the sella turcica...
October 13, 2017: Der Internist
https://www.readbyqxmd.com/read/29027497/comparative-evaluation-of-treatment-patterns-and-healthcare-utilization-of-newly-diagnosed-rheumatoid-arthritis-patients-by-anti-cyclic-citrullinated-peptide-antibody-status
#17
Lois Lamerato, Kylie Matthews, Kwanza Price, Alan Szymialis, Michael Eaddy, Augustina Ogbonnaya, Huai-Che Shih, Harris Ahmad
BACKGROUND: Anti-cyclic citrullinated peptide (CCP) antibody positivity is an established diagnostic factor for severe disease activity and joint damage and a prognostic factor for aggressive disease in rheumatoid arthritis (RA). OBJECTIVE: To compare RA-related treatment, healthcare utilization, and joint erosion between anti-CCP-positive and anti-CCP-negative RA patients. METHODS: Newly diagnosed RA patients were identified from the Henry Ford Health System database between 1/1/2009 and 12/31/2014; the date of the first RA diagnosis within the study period was the index date...
October 13, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/29027240/low-dose-ct-reconstruction-using-spatially-encoded-nonlocal-penalty
#18
Kyungsang Kim, Georges El Fakhri, Quanzheng Li
PURPOSE: Computed tomography (CT) is one of the most used imaging modalities for imaging both symptomatic and asymptomatic patients. However, because of the high demand for lower radiation dose during CT scans, the reconstructed image can suffer from noise and artifacts due to the trade-off between the image quality and the radiation dose. The purpose of this paper is to improve the image quality of quarter dose images and to select the best hyperparameters using the regular dose image as ground truth...
October 2017: Medical Physics
https://www.readbyqxmd.com/read/29027238/a-deep-convolutional-neural-network-using-directional-wavelets-for-low-dose-x-ray-ct-reconstruction
#19
Eunhee Kang, Junhong Min, Jong Chul Ye
PURPOSE: Due to the potential risk of inducing cancer, radiation exposure by X-ray CT devices should be reduced for routine patient scanning. However, in low-dose X-ray CT, severe artifacts typically occur due to photon starvation, beam hardening, and other causes, all of which decrease the reliability of the diagnosis. Thus, a high-quality reconstruction method from low-dose X-ray CT data has become a major research topic in the CT community. Conventional model-based de-noising approaches are, however, computationally very expensive, and image-domain de-noising approaches cannot readily remove CT-specific noise patterns...
October 2017: Medical Physics
https://www.readbyqxmd.com/read/29027210/oedema-fibrosis-in-duchenne-muscular-dystrophy-role-of-cardiovascular-magnetic-resonance-imaging
#20
REVIEW
Sophie Mavrogeni, Antigoni Papavasiliou, Katerina Giannakopoulou, George Markousis-Mavrogenis, Maria Roser Pons, Evangelos Karanasios, Ioannis Nikas, George Papadopoulos, Genovefa Kolovou, George P Chrousos
Duchenne muscular dystrophy (DMD) is an X-linked muscle disorder characterized by progressive, irreversible loss of cardiac and skeletal muscular function. Muscular enlargement in DMD is attributed to oedema, due to the increased cytoplasmic Na+ concentration. The aim in this review is to present the current experience and emphasize the role of cardiovascular magnetic resonance (CMR) in the diagnosis of this condition. DMD patients' survival depends on ventilatory assistance, as respiratory muscle dysfunction was the most common cause of death in the past...
October 13, 2017: European Journal of Clinical Investigation
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