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https://www.readbyqxmd.com/read/28934784/sonographic-guidance-for-supraclavicular-brachial-plexus-blocks-single-vs-double-injection-cluster-approach
#1
Jung Ju Choi, Hyun Jeong Kwak, Wol Seon Jung, Seung Hyun Chung, Mi Geum Lee
BACKGROUND: The cluster approach for supraclavicular brachial plexus block (SC-BPB) can be easily performed but may result in asymmetric local anesthetic (LA) spread. The authors hypothesized that the use of a cluster approach in each of the 2 planes would achieve better 3-dimensional LA distribution than the traditional single cluster approach. OBJECTIVES: The purpose of the present study was to compare a double injection (DI) in 2 planes (one injection in each plane) with the traditional single injection (SI) cluster approach for ultrasound-guided SC-BPB...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28923695/the-effect-of-pre-procedure-sublingual-nitroglycerin-on-radial-artery-diameter-and-allen-s-test-outcome-relevance-to-transradial-catheterization
#2
Aun-Yeong Chong, Ted Lo, Sudhakar George, Karim Ratib, Mamas Mamas, James Nolan
BACKGROUND: The radial artery is increasingly used for cardiac procedures, but is a relatively small vessel that is prone to spasm when instrumented. Intra-arterial nitroglycerine has been shown to reduce radial spasm but first requires arterial access. We investigated the effect of pre-procedure sublingual nitroglycerin (NTG) on the diameter of the radial artery in a large cohort of patients. METHODS: 305 subjects underwent ultrasound measurement of their radial and ulnar arteries in both arms before and after the administration of 800μg of sublingual NTG...
July 29, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28912005/proximal-radial-artery-arteriovenous-fistula-for-hemodialysis-vascular-access
#3
William C Jennings, Alexandros Mallios, Nasir Mushtaq
OBJECTIVE: This study reviewed our experience with proximal radial artery-based arteriovenous fistulas (PRA-AVFs) for hemodialysis vascular access, evaluating characteristics of the patients, functional patency, risk of steal syndrome, survival of the patient, and technical considerations. METHODS: We retrospectively analyzed our database of consecutive patients, identifying those individuals with a PRA-AVF created during a 12-year period. In addition to physical examination, all patients underwent ultrasound vessel mapping by the operating surgeon, identifying the PRA-AVF configuration and outflow target most likely to succeed...
September 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28910426/optical-coherence-tomography-angiography-features-of-iris-racemose-hemangioma-in-4-cases
#4
Jason L Chien, Kareem Sioufi, Sandor Ferenczy, Emil Anthony T Say, Carol L Shields
Importance: Optical coherence tomography angiography (OCTA) allows visualization of iris racemose hemangioma course and its relation to the normal iris microvasculature. Objective: To describe OCTA features of iris racemose hemangioma. Design, Setting, and Participants: Descriptive, noncomparative case series at a tertiary referral center (Ocular Oncology Service of Wills Eye Hospital). Patients diagnosed with unilateral iris racemose hemangioma were included in the study...
September 14, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28893830/assessment-of-paravalvular-leakage-after-transcatheter-aortic-valve-implantation-add-clinical-signs-to-echocardiographic-data
#5
Corstiaan A den Uil, Mihai Strachinaru, Ben van der Hoven, J Han J Meeder
A 62-year old male with pulmonary fibrosis and aortic valve stenosis underwent TAVI (Corevalve Evolut XL 34 mm) in the build-up for lung transplantation (LuTx). Following post-dilation for a large annular perimeter, moderate paravalvular aortic regurgitation (AR) was observed. After 6 weeks, he was admitted to the ICU with respiratory failure(A). TTE demonstrated residual mild AR (based on a small excentric paravalvular AR jet, <10% circumferential extent, pressure half-time was not reliably measured) and together with borderline elevated NT-pro-BNP, the consultant cardiologist authorized LuTx listing...
September 11, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28881821/radial-artery-intima-media-thickness-regresses-after-secondary-prevention-interventions-in-patients-post-acute-coronary-syndrome-and-is-associated-with-cardiac-and-kidney-biomarkers
#6
Damilola D Adingupu, Helena U Westergren, Santosh Dahgam, Ann-Cathrine Jönsson-Rylander, Juuso Blomster, Per Albertsson, Elmir Omerovic, Sara Svedlund, Li-Ming Gan
BACKGROUND: Radial artery intima-media thickness (rIMT) measured by ultra-high-resolution ultrasound is associated with increased cardiovascular risk and predicts outcomes. We performed non-invasive high-resolution ultrasound of the radial artery to investigate vascular changes in subjects presenting with acute coronary syndrome (ACS) and who had undergone percutaneous coronary intervention (PCI). PURPOSE: In the present work, we aimed to follow rIMT change over time post-acute coronary syndrome as a tool to monitor potential response to intensified medical therapy...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28868481/the-role-of-endoscopic-ultrasound-in-the-diagnostic-assessment-of-subepithelial-lesions-of-the-upper-gastrointestinal-tract
#7
Francisca Dias de Castro, Joana Magalhães, Sara Monteiro, Sílvia Leite, José Cotter
INTRODUCTION: The identification of subepithelial lesions is a relatively frequent finding at endoscopy however their natural history is not well known. Our aim was to analyze the role of endoscopic ultrasound (EUS) in the diagnostic approach of subepithelial lesions of the upper gastrointestinal tract. METHODS: Retrospective study which included 324 patients undergoing upper radial EUS for evaluation of subepithelial lesions from 2008 to 2014. The EUS features, presumptive diagnosis and management decision were analyzed...
November 2016: GE Port J Gastroenterol
https://www.readbyqxmd.com/read/28866487/motion-tracking-of-the-carotid-artery-wall-from-ultrasound-image-sequences-a-nonlinear-state-space-approach
#8
Zhifan Gao, Yanjie Li, Yuanyuan Sun, Jiayuan Yang, Huahua Xiong, Heye Zhang, Xin Liu, Wanqing Wu, Dong Liang, Shuo Li
The motion of the common carotid artery (CCA) wall has been established to be useful in early diagnosis of atherosclerotic disease. However, tracking the CCA wall motion from ultrasound images remains a challenging task. In this study, a nonlinear state-space approach has been developed to track CCA wall motion from ultrasound sequences. In this approach, a nonlinear state-space equation with a time-variant control signal was constructed from a mathematical model of the dynamics of the CCA wall. Then, the unscented Kalman filter (UKF) was adopted to solve the nonlinear state transfer function in order to evolve the state of the target tissue, which involves estimation of the motion trajectory of the CCA wall from noisy ultrasound images...
August 30, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28857901/two-unique-cases-of-ciprofloxacin-associated-avulsion-of-ligament-and-tendon
#9
Jeffrey David Smith, Robert W Irwin, Erin T Wolff
Ciprofloxacin is recognized to have a deleterious relationship with tendons, particularly Achilles tendinopathy, which makes up most case reports. Tendinopathy seems to occur because of induction of collagen-degrading enzymes causing damage and ischemia of the poorly vascularized regions preventing repair. The focus on the relationship of ciprofloxacin and the Achilles tendon leaves patients on fluoroquinolones with non-Achilles tendinopathy symptoms at risk of misdiagnosis. There have not been any documented instances of ligament damage with ciprofloxacin administration in the literature, although ligament and tendon compositions are similar and should have similar susceptibility...
August 25, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28836514/ectopic-pancreas-in-the-upper-gastrointestinal-tract-is-endosonographic-diagnosis-reliable-data-from-the-german-endoscopic-ultrasound-registry-and-review-of-the-literature
#10
Uwe Gottschalk, Christoph F Dietrich, Christian Jenssen
BACKGROUND: Ectopic pancreas (EP) belongs to the most frequent subepithelial lesions (SELs) of the upper gastrointestinal (GI) tract. In the majority of cases, it is detected incidentally. Differential diagnosis from mesenchymal subepithelial tumors may be difficult. METHODS: Among 24,308 endosonographic examinations and interventions, which were prospectively enrolled in the database of the German Endoscopic Ultrasound (EUS) Registry from January 2009 to August 2013, 575 were performed for suspected SELs of the upper GI tract...
August 24, 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28834894/value-of-radial-probe-endobronchial-ultrasound-guided-transbronchial-biopsy-and-computer-tomography-guided-transthoracic-needle-aspiration-in-the-diagnosis-of-peripheral-pulmonary-lesions
#11
Qiudi Zhang, Sujuan Zhang, Xiong Xu, Qianqian Xu, Jun Zhou
Computer tomography-guided transthoracic needle aspiration (CT-TTNA) is a minimally invasive technique for sampling peripheral lung lesions. Radial endobronchial ultrasound-guided transbronchial biopsy (rEBUS-TBB) is an alternative. The present study analyzed and compared rEBUS-TBB and CT-TTNA in the diagnosis of peripheral pulmonary lesions (PPL).Clinical data of 513 patients with PPL who underwent an rEBUS-TBB or CT-TTNA examination were analyzed retrospectively. The positive diagnostic rate, complication rate, and influencing factors of the 2 methods were compared...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28834441/pathologic-outcomes-of-architectural-distortion-on-digital-2d-versus-tomosynthesis-mammography
#12
Manisha Bahl, Leslie R Lamb, Constance D Lehman
OBJECTIVE: The purpose of this study is to compare the risk of malignancy associated with architectural distortion detected on 2D digital mammography (DM) versus digital breast tomosynthesis (DBT). MATERIALS AND METHODS: We performed a retrospective review of architectural distortion cases recommended for biopsy from September 2007 to February 2011, the period before DBT integration (hereafter known as the DM group), and from January 2013 to June 2016, the period after DBT integration (hereafter known as the DBT group)...
August 23, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28831234/ultrasound-guided-needling-vs-radial-shockwave-therapy-in-calcific-tendinitis-of-the-shoulder-a-prospective-randomized-trial
#13
Friso A De Boer, Femke Mocking, Eelco M Nelissen, Paulien M Van Kampen, Pol E Huijsmans
PURPOSE: Ultrasound Needling(UN) and Radial Shockwave(RSWT) aim to dissolve deposits in Shoulder Calcific tendinitis. METHODS: RCT in 25 patients to compare short term effectiveness. Outcome measures were pain and functional outcome at 6 weeks and 1 year and decrease of deposits after 6 weeks. RESULTS: UN decreased deposit more than RSWT(P = 0.029). After 6 weeks, Constant, NRS and Oxford improved more in UN. After 1 year, there was no significant difference in NRS(p = 0...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28828640/the-performance-of-3d-abus-versus-hhus-in-the-visualisation-and-bi-rads-characterisation-of-breast-lesions-in-a-large-cohort-of-1-886-women
#14
Athina Vourtsis, Aspasia Kachulis
OBJECTIVES: This study aimed to evaluate automated breast ultrasound (ABUS) compared to hand-held traditional ultrasound (HHUS) in the visualisation and BIRADS characterisation of breast lesions. MATERIALS AND METHODS: From January 2016 to January 2017, 1,886 women with breast density category C or D (aged 48.6±10.8 years) were recruited. All participants underwent ABUS and HHUS examination; a subcohort of 1,665 women also underwent a mammography. RESULTS: The overall agreement between HHUS and ABUS was 99...
August 21, 2017: European Radiology
https://www.readbyqxmd.com/read/28799124/comparison-between-free-breathing-radial-vibe-on-3-t-mri-and-endoscopic-ultrasound-for-preoperative-t-staging-of-resectable-oesophageal-cancer-with-histopathological-correlation
#15
Jinrong Qu, Hongkai Zhang, Zhaoqi Wang, Fengguang Zhang, Hui Liu, Zhidan Ding, Yin Li, Jie Ma, Zhongxian Zhang, Shouning Zhang, Yafeng Dong, Lina Jiang, Wei Zhang, Robert Grimm, Berthold Kiefer, Ihab R Kamel, Jianjun Qin, Hailiang Li
OBJECTIVES: To compare the T staging of resectable oesophageal cancer (OC) using radial VIBE (r-VIBE) and endoscopic ultrasound (EUS) with pathological confirmation of the T stage. METHODS: Forty-three patients with endoscopically proven OC and indeterminate T1/T2/T3/T4a stage by computed tomography (CT) and EUS were imaged on a 3-T magnetic resonance imaging (MRI) scanner. T stage was scored on MRI and EUS by two independent radiologists and one endoscopist, respectively, and compared with postoperative pathological findings...
August 10, 2017: European Radiology
https://www.readbyqxmd.com/read/28798785/simultaneous-vertebral-and-subclavian-artery-stenting
#16
Damian R Maciejewski, Łukasz Tekieli, Roman Machnik, Anna Kabłak-Ziembicka, Tadeusz Przewłocki, Piotr Paluszek, Mariusz Trystuła, Robert Musiał, Karolina Dzierwa, Piotr Pieniążek
INTRODUCTION: Vertebrobasilar territory ischemia leads to disabling neurological symptoms and may be caused both by vertebral artery (VA) and subclavian artery (SA) stenosis. The coexisting symptomatic ipsilateral VA and proximal SA stenosis should be considered as a true bifurcation lesion for percutaneous treatment. AIM: To evaluate the safety and efficacy of simultaneous angioplasty of vertebral and subclavian stenosis. MATERIAL AND METHODS: Fifteen patients (age 69...
2017: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/28796627/automated-breast-ultrasound-lesions-detection-using-convolutional-neural-networks
#17
Moi Hoon Yap, Gerard Pons, Joan Marti, Sergi Ganau, Melcior Sentis, Reyer Zwiggelaar, Adrian K Davison, Robert Marti
Breast lesion detection using ultrasound imaging is considered an important step of Computer-Aided Diagnosis systems. Over the past decade, researchers have demonstrated the possibilities to automate the initial lesion detection. However, the lack of a common dataset impedes research when comparing the performance of such algorithms. This paper proposes the use of deep learning approaches for breast ultrasound lesion detection and investigates three different methods: a Patch-based LeNet, a U-Net, and a transfer learning approach with a pretrained FCN-AlexNet...
August 7, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28782129/volumetric-mri-thermometry-using-a-three-dimensional-stack-of-stars-echo-planar-imaging-pulse-sequence
#18
Sumeeth V Jonathan, William A Grissom
PURPOSE: To measure temperature over a large brain volume with fine spatiotemporal resolution. METHODS: A three-dimensional stack-of-stars echo-planar imaging sequence combining echo-planar imaging and radial sampling with golden angle spacing was implemented at 3T for proton resonance frequency-shift temperature imaging. The sequence acquires a 188x188x43 image matrix with 1.5x1.5x2.75 mm(3) spatial resolution. Temperature maps were reconstructed using sensitivity encoding (SENSE) image reconstruction followed by the image domain hybrid method, and using the k-space hybrid method...
August 7, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28777413/proximal-ulnar-artery-arteriovenous-fistula-inflow-is-an-uncommon-but-useful-vascular-access-option
#19
William C Jennings, Alexandros Mallios
INTRODUCTION: A proximal ulnar artery arteriovenous fistula (PUA-AVF) is a logical vascular access option when the distal ulnar artery is occluded or inadequate in addition to other specific vascular anatomic variants. This study reviews a series of patients where the proximal ulnar artery was used for AVF inflow in establishing a reliable autogenous access for these uncommon patients. MATERIALS AND METHODS: All new patients referred for vascular access with a PUA-AVF created during an eight-year period were evaluated...
July 27, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28772277/factors-to-consider-when-deciding-on-the-type-of-free-flap-reconstruction-of-head-and-neck-soft-tissue-defects
#20
Mohammed Thabet Aladimi, Bo Han, Chunjie Li, Hussein Helal, Zhenjie Gao, Longjiang Li
OBJECTIVES: The aim of the study was to evaluate the functional and aesthetic outcomes on donor and recipient sites and to determine the effects of technical factors including flap thickness and vessel diameters measured by ultrasonography as well as the size of the defect and postoperative volume reduction of the flaps measured by magnetic resonance imaging (MRI). METHODS: In patients who had undergone soft tissue reconstructive surgery between March 2013 and March 2016 using 55 anterolateral thigh flaps (ALTFs), 30 radial forearm flaps (RFFs), and 18 latissimus dorsi flaps (LDFs), color Doppler ultrasonography was performed to measure the thickness of the flap at the site of the perforator...
2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
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