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Diagnostic ultrasound

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https://www.readbyqxmd.com/read/29040777/efficient-imaging-examining-the-value-of-ultrasound-in-the-diagnosis-of-traumatic-adult-brachial-plexus-injuries-a-systematic-review
#1
Brian Chin, Maleka Ramji, Forough Farrokhyar, James R Bain
INTRODUCTION: Traumatic brachial plexus injury (BPI) can result in debilitating sequelae of the upper extremity. Presently, therapeutic decisions are based on the mechanism of injury, serial physical examination, electromyography, nerve conduction, and imaging studies. While magnetic resonance imaging is the current imaging modality of choice for BPI, ultrasound is a promising newcomer that is inexpensive, accessible, and available at point of care. OBJECTIVE: To evaluate ultrasound as a diagnostic tool in the assessment of traumatic adult BPI through a systematic review...
October 11, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29036794/assessing-the-effect-of-different-operation-techniques-on-postoperative-duplex-ultrasound-quality-after-carotid-endarterectomy
#2
E Grambow, T Heller, P Wieneke, C Weiß, E Klar, M Weinrich
BACKGROUND: Duplex ultrasound is the first choice in diagnostics and surveillance of stenoses of the internal carotid arteries before and even after surgery. Therefore, the quality of duplex ultrasound is crucial to investigate these vascular pathologies. OBJECTIVE: Aim of this study was the evaluation whether different surgical techniques affect the postoperative quality of duplex ultrasound. METHODS: In a time period from January to May 2015 duplex ultrasound of the cervical vessels was performed in 75 patients after unilateral endarterectomy of the internal carotid artery at our department between 2006 and 2012...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036004/the-utility-of-clinical-ultrasonography-in-identifying-distal-forearm-fractures-in-the-pediatric-emergency-department
#3
Iratxe Galletebeitia Laka, Frederic Samson, Inigo Gorostiza, Andrés Gonzalez, Carlos Gonzalez
OBJECTIVE: The aim of this study is to evaluate the utility of Point-Of-Care Ultrasound (POCUS) for diagnosing distal forearm fractures in pediatric emergency departments (ED). PATIENTS AND METHODS: A prospective observational study was carried out in children aged younger than 15 years attended in an ED with an indication of radiography because of a suspected distal forearm fracture. The POCUS was performed considering cortical irregularity or disruption compatible with fracture...
October 13, 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/29035942/phase-ii-randomized-sham-controlled-study-of-renal-denervation-for-individuals-with-uncontrolled-hypertension-wave-iv
#4
Roland E Schmieder, Christian Ott, Stefan W Toennes, Peter Bramlage, Michael Gertner, Omar Dawood, Peter Baumgart, Benjamin O'Brien, Indranil Dasgupta, Georg Nickenig, John Ormiston, Manish Saxena, Andrew S P Sharp, Horst Sievert, Jindrich Spinar, Zdenek Starek, Joachim Weil, Ulrich Wenzel, Adam Witkowski, Melvin D Lobo
OBJECTIVES: The aim of this double-blind, randomized, sham-controlled study was to verify the blood pressure (BP)-lowering efficacy of externally delivered focused ultrasound for renal denervation (RDN). BACKGROUND: Nonrandomized, first proof-of-concept study and experimental evidence suggested that noninvasive techniques of RDN emerged as an alternative approach of RDN to invasive technologies. METHODS: WAVE IV, an international, randomized (1 : 1) sham-controlled, double-blind prospective clinical study, was prematurely stopped...
October 13, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/29034764/indeterminate-biliary-strictures-a-simplified-approach
#5
Chencheng Xie, Khalil Aloreidi, Bhavesh Patel, Timothy Ridgway, Thavam Thambi-Pillai, Gary Timmerman, Adeel Khan, Muslim Atiq
Pre-operative evaluation of biliary strictures remains challenging. The dilemma that exists is how to balance the risk of failing to detect malignancy and the potential morbidity caused by unnecessary surgery in patients with benign etiologies. With emerging novel diagnostic modalities, this study aims to assess the efficacy of diagnostic techniques and facilitate a clinical approach to indeterminate biliary strictures. Areas covered: Conventional imaging modalities are crucial in identifying the location of a stricture and are helpful for choosing further diagnostic modalities...
October 16, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29034282/differentiation-of-prostate-cancer-lesions-in-the-transition-zone-by-diffusion-weighted-mri
#6
Jie Bao, Ximing Wang, Chunhong Hu, Jianquan Hou, Fenglin Dong, Lingchuan Guo
OBJECTIVE: To differentiate prostate cancer lesions in transition zone by diffusion-weighted-MRI (DW-MRI). METHODS: Data from a total of 63 patients who underwent preoperative DWI (b of 0-1000 s/mm(2)) were prospectively collected and processed by a monoexponential (DWI) model and compared with a biexponential (IVIM) model for quantitation of apparent diffusion coefficients (ADCs), perfusion fraction f, diffusivity D and pseudo-diffusivity D*. Histogram analyses were performed by outlining entire-tumor regions of interest (ROIs)...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/29033431/diagnostic-challenge-in-pancreatic-sarcoidosis-using-endoscopic-ultrasonography
#7
Nobuaki Azemoto, Teru Kumagi, Mitsuhito Koizumi, Taira Kuroda, Hirofumi Yamanishi, Yoshinori Ohno, Yoshiki Imamura, Eiji Takeshita, Yoshiko Soga, Yoshiou Ikeda, Morikazu Onji, Yoichi Hiasa
We herein report a 55-year-old woman who presented with erythema and bilateral hilar lymphadenopathy 4 months prior to the detection of pancreatic lesions on an ultrasound. A skin biopsy showed evidence of sarcoidosis. The largest lesion in the tail of the pancreas was hypoechoic on endoscopic ultrasonography (EUS). The lesion was initially iso-enhanced on contrast enhanced-EUS (CE-EUS) but subsequently became hypoenhanced. The lesion revealed heterogeneous components of both soft and hard tissue on EUS elastography...
October 16, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29033314/analysis-of-threshold-stenosis-by-multiplanar-venogram-and%C3%A2-intravascular-ultrasound-examination-for-predicting-clinical-improvement-after-iliofemoral-vein-stenting-in-the%C3%A2-vidio-trial
#8
Paul J Gagne, Antonios Gasparis, Stephen Black, Patricia Thorpe, Marc Passman, Suresh Vedantham, William Marston, Mark Iafrati
BACKGROUND: Selecting patients for iliofemoral vein stenting has traditionally relied on the identification and quantification of stenotic lesions with imaging such as multiplanar venography. Recently, intravascular ultrasound (IVUS) imaging has become more available. However, to date, the usefulness of these imaging modalities using the customary >50% treatment threshold for diameter (multiplanar venography) and area (IVUS) stenosis of iliofemoral veins has not been validated prospectively within the context of clinical improvement...
October 12, 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29033272/graduating-surgical-residents-lack-competence-in-critical-care-ultrasound
#9
Renuka Tripu, Margaret H Lauerman, Daniel Haase, Syeda Fatima, Jacob Glaser, Cassandra Cardarelli, Thomas M Scalea, Sarah Murthi
OBJECTIVE: Ultrasound provides accessible imaging for bedside diagnostics and procedural guidance, but may lead to misdiagnosis in untrained users. The main objective of this study was to determine observed and self-perceived competence with critical care ultrasound in graduated general surgery residents. DESIGN: The design of this study was a retrospective review. Ultrasound training program records were reviewed for number of prior ultrasound examinations performed, self-perceived competence, observed competence on faculty examinations, and intended future use of individual critical care ultrasound examinations...
October 13, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/29032763/basics-in-endoscopic-ultrasound-part-1-diagnostic-indications-and-tissue-sampling
#10
Marta Serrani, Claudio Calvanese, Andrea Lisotti, Giancarlo Caletti, Ludovico Abenavoli, Pietro Fusaroli
BACKGROUND: Endoscopic ultrasound has been used in the clinical arena for almost 35 years and it is now well-integrated in everyday hospital practice. METHOD: We conducted a systematic review of the available English-language articles. OBJECTIVE: The purpose of this review is to summarize all the relevant indications to endoscopic ultrasound and analyze its relevant data in terms of accuracy and clinical outcomes. RESULTS: More than 5000 scientific papers published in the literature have demonstrated its high accuracy for the diagnosis and staging of a variety of benign and malignant conditions...
October 9, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/29032579/incidentally-detected-testicular-lesions-10-mm-in-diameter-can-orchidectomy-be-avoided
#11
Glenda Scandura, Clare Verrill, Andrew Protheroe, Johnson Joseph, Wendy Ansell, Anju Sahdev, Jonathan Shamash, Daniel M Berney
OBJECTIVE: To investigate the pathology of excised testicular lesions <10 mm. PATIENTS AND METHODS: The pathological reports of 2,681 patients from Barts Health NHS Trust and Oxford University Hospitals NHS Foundation Trust (OUHFT) were reviewed as part of a service evaluation audit from January 2003 to May 2016. Cases with a maximum diameter of <10 mm were selected. Clinical features were also accessed, where available, to look for patient demographics, pre-diagnostic levels of serum markers, ultrasonograophic (US) findings and clinical details...
October 15, 2017: BJU International
https://www.readbyqxmd.com/read/29031628/ultrasound-and-the-complete-urologist-part-1-methodology
#12
Eugene M Fine
Computed tomography (CT) scanning is considered as the imaging study of choice for asymptomatic microhematuria according to the American Urological Association guidelines. For those patients with persistence of microhematuria after a negative initial examination, the guidelines suggest repeating the evaluation including CT scanning within 3 to 5 years. However, the cost and risk involved for utilizing this technology going forward is an issue, especially when the yield of finding significant pathology on subsequent imaging studies is exceedingly low...
October 2017: Urologic Oncology
https://www.readbyqxmd.com/read/29031366/chapter-4-thyroid-malignancy-staging-and-restaging
#13
Daniel Thomas Ginat, Anca M Avram
Determining the extent of disease is necessary for guiding the management of thyroid carcinomas. Diagnostic imaging, including ultrasound, computed tomography, magnetic resonance imaging, and nuclear medicine scans, plays an essential role in staging and restaging of thyroid carcinomas. This article reviews the approaches and imaging findings for evaluating the primary tumor, regional lymph node metastases, and distant metastases. In addition, potential pitfalls are discussed and depicted.
October 2017: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/29030785/usefulness-of-abbreviated-breast-mri-screening-for-women-with-a-history-of-breast-cancer-surgery
#14
Bo Hwa Choi, Nami Choi, Mi Young Kim, Jung-Hyun Yang, Young Bum Yoo, Hae Kyoung Jung
PURPOSE: We investigated the usefulness of abbreviated breast MRI (AB-MRI), including fat-suppressed T2-weighted imaging, pre- and postcontrast image acquisition, and subtracted maximum-intensity projection imaging, for the screening of women with a history of breast cancer surgery. METHODS: Between October 2014 and March 2016, a total of 799 AB-MRI examinations were performed for 725 women with a history of breast cancer surgery. The image acquisition time was 8...
October 13, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29030715/point-of-care-transcranial-doppler-by-intensivists
#15
REVIEW
Vincent Issac Lau, Robert Thomas Arntfield
In the unconscious patient, there is a diagnostic void between the neurologic physical exam, and more invasive, costly and potentially harmful investigations. Transcranial color-coded sonography and two-dimensional transcranial Doppler imaging of the brain have the potential to be a middle ground to bridge this gap for certain diagnoses. With the increasing availability of point-of-care ultrasound devices, coupled with the need for rapid diagnosis of deteriorating neurologic patients, intensivists may be trained to perform point-of-care transcranial Doppler at the bedside...
October 13, 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/29029521/contrast-enhanced-endoscopic-ultrasound-for-differential-diagnosis-of-pancreatic-cancer-an-updated-meta-analysis
#16
Xing-Kang He, Yue Ding, Lei-Min Sun
AIM: We aim to assess the diagnostic value of contrast-enhanced endoscopic ultrasound (CE-EUS) for pancreatic cancer and inflammatory lesions by pooling current evidence. MATERIALS AND METHODS: A systematical search of PubMed, Web of Science and the Cochrane Library was performed from inception to January 2016. Two authors independently screened and extracted detailed data from included studies. A random effect model was adopted to estimate the pooled sensitivity, specificity in order to determine the diagnostic ablitity of CE-EUS...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29028511/a-pictorial-review-of-diagnostic-pitfalls-of-developmental-anomalies-and-variants-in-pancreatic-imaging
#17
REVIEW
Jong Eun Lee, Sang Soo Shin, Shin Jung Kim, Suk Hee Heo, Hyo Soon Lim, Jin Woong Kim, Yong Yeon Jeong
Developmental anomalies and anatomic variants of the pancreas vary widely, and most of them are encountered incidentally during radiologic evaluation. However, some of these anomalies and variants are potentially pathologic and may cause various clinical presentations in childhood or adulthood. The early identification of these entities in various imaging modalities including ultrasound, computed tomography (CT), and magnetic resonance (MR) imaging would be valuable in making correct diagnoses and, in turn, preventing unnecessary additional procedures...
September 19, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29028499/fasciculations-in-nerve-and-muscle-disorders-a-prospective-study-of-muscle-ultrasound-compared-to-electromyography
#18
M T Johansson, H R Ellegaard, H Tankisi, A Fuglsang-Frederiksen, E Qerama
OBJECTIVES: We examined the clinical utility of muscle ultrasound (MUS) in detecting fasciculations in patients with nerve and muscle disorders (NMD) and investigated the impact on diagnostic sensitivity when combining electromyography (EMG) and MUS. METHODS: We included 58 consecutive patients suspected to have NMD and 38 healthy subjects (HS). Patients and HS underwent MUS in 14 skeletal and two bulbar muscles and the video recordings of the MUS were anonymised...
September 22, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29028279/liver-elastography-malignancy-prediction-lemp-score-for-noninvasive-characterization-of-focal-liver-lesions
#19
Ivica Grgurevic, Tomislav Bokun, Nermin N Salkic, Boris Brkljacic, Mirjana Vukelić-Markovic, Tajana Stoos-Veic, Gorana Aralica, Mislav Rakic, Tajana Filipec-Kanizaj, Annalisa Berzigotti
BACKGROUND & AIMS: To analyse elastographic characteristics of focal liver lesions (FLL)s and diagnostic performance of real-time two-dimensional shear-wave elastography (RT-2D-SWE) in order to differentiate benign and malignant FLLs. PATIENTS AND METHODS: Consecutive patients diagnosed with FLL by abdominal ultrasound (US) underwent RT-2D-SWE of FLL and non-infiltrated liver by intercostal approach over the right liver lobe. The nature of FLL was determined by diagnostic work-up, including at least one contrast-enhanced imaging modality (MDCT/MRI), check-up of target organs when metastatic disease was suspected and FLL biopsy in inconclusive cases...
October 13, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29028196/edge-probability-and-pixel-relativity-based-speckle-reducing-anisotropic-diffusion
#20
Deepak Mishra, Santanu Chaudhury, Mukul Sarkar, Arvinder Singh Soin, Vivek Sharma
Anisotropic diffusion filters are one of the best choices for speckle reduction in the ultrasound images. These filters control the diffusion flux flow using local image statistics and provide the desired speckle suppression. However, inefficient use of edge characteristics results in either oversmooth image or an image containing misinterpreted spurious edges. As a result, the diagnostic quality of the images becomes a concern. To alleviate such problems, a novel anisotropic diffusion based speckle reducing filter is proposed in this paper...
October 12, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
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