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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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...
August 4, 2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/28760582/improved-outcomes-with-proximal-radial-cephalic-arteriovenous-fistulas-compared-with-brachial-cephalic-arteriovenous-fistulas
#7
Dean J Arnaoutakis, Elise P Deroo, Patrick McGlynn, Maxwell D Coll, Michael Belkin, Dirk M Hentschel, C Keith Ozaki
BACKGROUND: Brachial-cephalic arteriovenous fistulas (BCFs) are associated with high-flow volumes, leading to potential risks such as arm swelling, steal syndrome, pseudoaneurysm (due to a pressurized access), and cephalic arch stenosis. We hypothesized that a proximal radial-cephalic fistula (prRCF) configuration mitigates these risks because a lower flow state is created. Furthermore, we also hypothesized that despite these lower flows, patencies (primary, primary assisted, secondary) are sustained...
July 28, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28724126/comparative-outcomes-after-percutaneous-coronary-intervention-among-black-and-white-patients-treated-at-us-veterans-affairs-hospitals
#8
Taisei Kobayashi, Thomas J Glorioso, Ehrin J Armstrong, Thomas M Maddox, Mary E Plomondon, Gary K Grunwald, Steven M Bradley, Thomas T Tsai, Stephen W Waldo, Sunil V Rao, Subhash Banerjee, Brahmajee K Nallamothu, Deepak L Bhatt, A Garvey Rene, Robert L Wilensky, Peter W Groeneveld, Jay Giri
Importance: Current comparative outcomes among black and white patients treated with percutaneous coronary intervention (PCI) in the Veterans Affairs (VA) health system are not known. Objective: To compare outcomes between black and white patients undergoing PCI in the VA health system. Design, Setting, and Participants: This study compared black and white patients who underwent PCI between October 1, 2007, and September 30, 2013, at 63 VA hospitals using data recorded in the VA Clinical Assessment, Reporting, and Tracking System for Cardiac Catheterization Laboratories (CART-CL) program...
July 19, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28720637/intersection-syndrome-the-subtle-squeak-of-an-overused-wrist
#9
Thomas M Skinner
Patient histories that include wrist pain can be pivotal in the distinction between intersection syndrome (IS) and the more common de Quervain's tenosynovitis (DQT). Presented here is a 26-year-old pregnant woman with a history of rowing who developed left radial/dorsal wrist pain and a rubbing/squeaking sensation. Nine months of conservative DQT therapy and a landmark-guided corticosteroid injection failed to relieve her symptoms. An in-clinic ultrasound showed tenosynovitis at the intersection of the first and second compartments, confirming a diagnosis of IS...
July 2017: Journal of the American Board of Family Medicine: JABFM
https://www.readbyqxmd.com/read/28692857/modelling-and-extraction-of-pulsatile-radial-distension-and-compression-motion-for-automatic-vessel-segmentation-from-video
#10
Alborz Amir-Khalili, Ghassan Hamarneh, Rafeef Abugharbieh
Identification of vascular structures from medical images is integral to many clinical procedures. Most vessel segmentation techniques ignore the characteristic pulsatile motion of vessels in their formulation. In a recent effort to automatically segment vessels that are hidden under fat, we motivated the use of the magnitude of local pulsatile motion extracted from surgical endoscopic video. In this article we propose a new approach that leverages the local orientation, in addition to magnitude of motion, and demonstrate that the extended computation and utilization of motion vectors can improve the segmentation of vascular structures...
June 29, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28688136/ultrasound-versus-traditional-palpation-to-guide-radial-artery-cannulation-in-critically-ill-children-a-randomized-trial
#11
Nattachai Anantasit, Pimporn Cheeptinnakorntaworn, Anant Khositseth, Rojjanee Lertbunrian, Marut Chantra
OBJECTIVES: To identify success rates for radial artery cannulation in a pediatric critical care unit using either palpation or ultrasound guidance to cannulate the radial artery. METHODS: A prospective randomized comparative study of critically ill children who required invasive monitoring in a tertiary referral center was conducted. All patients were randomized by a stratified block of 4 to either ultrasound-guided or traditional palpation radial artery cannulation...
July 8, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28682811/posterior-tibial-artery-as-an-alternative-to-the-radial-artery-for-arterial-cannulation-site-in-small-children-a-randomized-controlled-study
#12
Eun-Hee Kim, Ji-Hyun Lee, In-Kyung Song, Jin-Tae Kim, Won-Jong Lee, Hee-Soo Kim
BACKGROUND: We evaluated the posterior tibial artery as an alternative arterial cannulation site to the radial artery in small children. METHODS: A two-stage study was conducted. First, we evaluated the anatomical characteristics of the posterior tibial artery compared with the radial and dorsalis pedis arteries. Next, a parallel-arm single-blind randomized controlled study compared the initial success rate of ultrasound-guided arterial cannulation among three arteries as a primary outcome...
July 5, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28681437/subharmonic-and-endoscopic-contrast-imaging-of-pancreatic-masses-a-pilot-study
#13
Flemming Forsberg, Maria Stanczak, Andrej Lyshchik, David Loren, Patrick O'Kane, Ali Siddiqui, Thomas E Kowalski, Cynthia Miller, Traci Fox, Ji-Bin Liu, John R Eisenbrey
OBJECTIVES: To use subharmonic imaging (SHI) to depict the vascularity of pancreatic masses compared to contrast-enhanced endoscopic ultrasound (EUS) and pathologic results. METHODS: Sixteen patients scheduled for biopsy of a pancreatic mass were enrolled in an Institutional Review Board-approved study. Pulse-inversion SHI (transmitting/receiving at 2.5/1.25 MHz) was performed on a LOGIQ 9 system (GE Healthcare, Milwaukee, WI) with a 4C transducer, whereas contrast harmonic EUS (transmitting/receiving at 4...
July 6, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28680698/non-iatrogenic-traumatic-isolated-bilothorax-in-a-cat
#14
Ronan A Mullins, Marc A Barandun, Barbara Gallagher, Laura C Cuddy
CASE SUMMARY: A 6-month-old spayed female domestic shorthair cat presented for evaluation of suspected bite wounds over the right caudal thorax and left cranial flank. Thoracic radiographs identified a mild right-sided pneumothorax, a small volume of right-sided pleural effusion, with increased soft tissue opacity in the right cranial and middle lung lobes. Abdominal ultrasound identified a very small gall bladder and several small pockets of free peritoneal fluid. Cytological analysis of peritoneal fluid was consistent with a modified transudate...
January 2017: JFMS open reports
https://www.readbyqxmd.com/read/28676726/-traumatic-cyclodialysis-treated-with-cryopexy
#15
P Plaza Ramos, H Heras Mulero, J I Molinuevo Ruiz de Zárate, C Abascal Azanza
yclodialysis is the result of the separation of the longitudinal fibres of the ciliary muscle from their scleral insertion, creating states of ocular hypotony. It is mainly caused by traumatisms. Gonioscopy has traditionally been the diagnostic test for this entity, however, at present it is being replaced by other techniques, such as ultrasound biomicroscopy (UBM). We present the case of a 57-year-old male who, following a traumatism in the left eye caused by the disc of a radial saw, presented corneal perforation and vitreous haemorrhage with pan-retinal edema...
June 30, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28673221/intravascular-catheters-an-ultrasound-imaging-based-observational-study-of-position-and-function
#16
P D Hebbard, P Flinn
Peripheral intravenous and intra-arterial catheters often block with movement of the limb in which they are inserted. Although the cause of this blockage is commonly attributed to a valve or other structure within the vein, evidence for this is lacking. We used ultrasound to assess the cause of blockage on movement, and degree of tip movement, of 62 venous and 21 radial arterial catheters. In both venous and arterial catheters, blockage was predominantly caused by impingement of the catheter on the vessel wall, with catheter kinking and spasm of the vessel also seen...
July 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28663762/comparison-of-very-high-frequency-ultrasound-assessment-of-radial-arterial-wall-layers-after-first-and-repeated-transradial-coronary-procedures
#17
Bei-Bei Zhang, Yu-Jie Zhou, Jie Du, Shi-Wei Yang, Zhi-Jiang Wang, Hua Shen, Zhi-Ming Zhou
BACKGROUND: Transradial coronary procedure (TRP) traumatizes the radial artery (RA), especially resulting in changes to arterial wall morphology. This study explored the significance of the early onset of traumatic effects to wall layers of the RA following the first TRP (FTRP) and repeat TRP (RTRP) using very-high-frequency ultrabiomicroscopy (VHFUBM). METHODS: A total of 1431 patients that received TRP were divided into the FTRP group that comprised 781 patients and the RTRP group that comprised 650 patients depending on the number of procedures...
April 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/28658435/sonographic-findings-of-the-bifid-median-nerve-and-persistent-median-artery-in-carpal-tunnel-a-preliminary-study-in-chinese-individuals
#18
Li Chen, Jie Chen, Bing Hu, Li-Xin Jiang
OBJECTIVE: The aim of this study was to investigate the prevalence of anatomic variations of the bifid median nerve, persistent median artery and persistent median vein in Chinese individuals and their relationship with carpal tunnel syndrome. METHODS: One hundred and sixty median nerves were examined using ultrasonography and colour Doppler ultrasonography. The location, shape, and size of the bifid median nerve, persistent median artery and persistent median vein were recorded...
June 2017: Clinics
https://www.readbyqxmd.com/read/28656461/comparison-of-radial-4d-flow-mri-with-perivascular-ultrasound-to-quantify-blood-flow-in-the-abdomen-and-introduction-of-a-porcine-model-of-pre-hepatic-portal-hypertension
#19
A Frydrychowicz, A Roldan-Alzate, E Winslow, D Consigny, C A Campo, U Motosugi, K M Johnson, O Wieben, S B Reeder
OBJECTIVES: Objectives of this study were to compare radial time-resolved phase contrast magnetic resonance imaging (4D Flow-MRI) with perivascular ultrasound (pvUS) and to explore a porcine model of acute pre-hepatic portal hypertension (PHTN). METHODS: Abdominal 4D Flow-MRI and pvUS in portal and splenic vein, hepatic and both renal arteries were performed in 13 pigs of approximately 60 kg. In six pigs, measurements were repeated after partial portal vein (PV) ligature...
June 27, 2017: European Radiology
https://www.readbyqxmd.com/read/28654911/radial-artery-intima-media-thickness-regresses-after-secondary-prevention-interventions-in-patients-post-acute-coronary-syndrome-and-is-associated-with-cardiac-and-kidney-biomarkers
#20
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...
June 16, 2017: Oncotarget
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