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Ultrasound testes

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https://www.readbyqxmd.com/read/28934812/prediction-of-pathological-complete-response-to-neoadjuvant-chemotherapy-for-primary-breast-cancer-comparing-interim-ultrasound-shear-wave-elastography-and-mri
#1
Andrew Evans, Patsy Whelehan, Alastair Thompson, Colin Purdie, Lee Jordan, Jane Macaskill, Shelley Waugh, Frances Fuller-Pace, Katrin Brauer, Sarah Vinnicombe
Background Prediction of pathological complete response (pCR) of primary breast cancer to neoadjuvant chemotherapy (NACT) may influence planned surgical approaches in the breast and axilla. The aim of this project is to assess the value of interim shear wave elastography (SWE), ultrasound (US) and magnetic resonance imaging (MRI) after 3 cycles in predicting pCR. Methods 64 patients receiving NACT had baseline and interim US, SWE and MRI examinations. The mean lesion stiffness at SWE, US and MRI diameter was measured at both time points...
September 21, 2017: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/28934784/sonographic-guidance-for-supraclavicular-brachial-plexus-blocks-single-vs-double-injection-cluster-approach
#2
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/28932977/hepatic-stiffness-using-shear-wave-elastography-and-the-related-factors-for-a-fontan-circulation
#3
Seong-Ook Kim, Sang-Yun Lee, So-Ick Jang, Soo-Jin Park, Hye-Won Kwon, Seong-Ho Kim, Chang-Ha Lee, Eun-Seok Choi, Seong-Kyu Cho, Sun-Hwa Hong, Yang-Min Kim
Hepatic problems related to a Fontan circulation have been highlighted and elastography using ultrasound is a non-invasive tool that can measure the severity of hepatic stiffness. We investigated the hepatic stiffness using shear wave elastography (SWE) and related factors in patients with a Fontan circulation. This study enrolled 64 patients with a Fontan circulation who underwent cardiac catheterization and abdominal ultrasound from 2011 to 2015. The correlation between the laboratory tests, hemodynamic factors by cardiac catheterization, and SWE was evaluated...
September 21, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28932957/fluoroscopy-vs-ultrasound-guided-aspiration-techniques-in-the-management-of-periprosthetic-joint-infection-which-is-the-best
#4
Filippo Randelli, Marco Brioschi, Pietro Randelli, Federico Ambrogi, Silvana Sdao, Alberto Aliprandi
BACKGROUND: Fluid samples obtained from an affected joint still play a central role in the diagnosis of periprosthetic joint infection (PJI). It is the only preoperative test able to discover the causative microbiological agent. In the hip, fluid aspiration can be performed through fluoroscopy, ultrasound, or, less commonly, computed tomography. However, there is still a lack of consensus on which method is preferable in terms of efficacy and costbenefit. PURPOSES: We, therefore, asked whether (1) the benefits in terms of sensitivity and specificity and (2) the costs were comparable between fluoroscopy- and ultrasound-guided joint aspirations in a suspicious of hip PJI...
September 20, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28932826/interobserver-variation-of-the-bolus-and-burst-method-for-pancreatic-perfusion-with-dynamic-contrast-enhanced-ultrasound
#5
Marcus Stangeland, Trond Engjom, Martin Mezl, Radovan Jirik, Odd Helge Gilja, Georg Dimcevski, Kim Nylund
PURPOSE: Dynamic contrast-enhanced ultrasound (DCE-US) can be used for calculating organ perfusion. By combining bolus injection with burst replenishment, the actual mean transit time (MTT) can be estimated. Blood volume (BV) can be obtained by scaling the data to a vessel on the imaging plane. The study aim was to test interobserver agreement for repeated recordings using the same ultrasound scanner and agreement between results on two different scanner systems. MATERIALS AND METHODS: Ten patients under evaluation for exocrine pancreatic failure were included...
June 2017: Ultrasound International Open
https://www.readbyqxmd.com/read/28932302/predictive-value-of-tracheal-rapid-ultrasound-exam-performed-in-the-emergency-department-for-verification-of-tracheal-intubation
#6
Babak Masoumi, Reza Azizkhani, Gilava Hedayati Emam, Morteza Asgarzadeh, Behrouz Zargar Kharazi
BACKGROUND: Verification of the correct placement of the endotracheal tube (ETT) has been one of the most challenging issues of airway management in the field of emergency medicine. Early detection of oesophagal intubation through a reliable method is important for emergency physicians. AIM: The aim of this study was to assess the diagnostic accuracy of tracheal rapid ultrasound exam (TRUE) to assess endotracheal tube misplacement during emergency intubation. METHODS: This was an observational prospective study performed in the emergency department of the major tertiary referral hospital in the city...
August 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28931184/-modern-interdisciplinary-management-of-a-uretero-iliac-artery-fistula-case-report
#7
D Benedix, F Meyer, F Fischbach, A Janitzky, Z Halloul
Introduction Abnormal links between the arterial system and other luminal systems are a challenge to those in charge of their adequate diagnostic and therapeutic management. Objective Scientific case report on an individual who underwent successful treatment combining vascular-surgical and interventional radiology techniques for a rare right uretero-iliac artery fistula based on personal clinical experience, a selective literature research and a detailed discussion of current recommendations for diagnostic workup and subsequent treatment...
September 20, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28931040/newborn-skin-reflection-proof-of-concept-for-a-new-approach-for-predicting-gestational-age-at-birth-a-cross-sectional-study
#8
Zilma Silveira Nogueira Reis, Gabriela Luiza Nogueira Vitral, Ingrid Michelle Fonseca de Souza, Maria Albertina Santiago Rego, Rodney Nascimento Guimaraes
BACKGROUND: Current methods to assess the gestational age during prenatal care or at birth are a global challenge. Disadvantages, such as low accessibility, high costs, and imprecision of clinical tests and ultrasonography measurements, may compromise health decisions at birth, based on the gestational age. Newborns' organs and tissues can indirectly indicate their physical maturity, and we hypothesized that evolutionary changes in their skin, detected using an optoelectronic device meter, may aid in estimating the gestational age...
2017: PloS One
https://www.readbyqxmd.com/read/28930853/combined-resection-of-the-right-liver-lobe-and-retrohepatic-inferior-vena-cava-to-treat-hepatic-alveolar-echinococcosis-a-case-report
#9
Lei Du, Ling-Qiang Zhang, Li-Zhao Hou, Li Ren, Hai-Jiu Wang, Xin-Jian Guo, Haining Fan
RATIONALE: Hepatic alveolar echinococcosis (HAE) is a potentially fatal and chronically progressive infestation that is caused by the multivesicular metacestode of Echinococcus multilocularis (EM). HAE behaves like a malignant tumor and has been referred to as "worm cancer." The main treatment method for HAE is surgical resection. PATIENT CONCERNS: We present a 41-year-old Tibetan alveolar echinococcosis (AE) patient with AE lesions invading the right liver lobe and retrohepatic inferior vena cava (RHIVC)...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28929363/all-in-one-low-intensity-pulsed-ultrasound-stimulation-system-using-piezoelectric-micromachined-ultrasonic-transducer-pmut-arrays-for-targeted-cell-stimulation
#10
Wonjun Lee, Seungjun Yoo, Joontaek Jung, Woojin Kang, Wei Wang, Cheil Moon, Hongsoo Choi
A novel cell-stimulation system was fabricated using 10 × 29 piezoelectric micromachined ultrasonic transducer (pMUT) arrays for targeted ultrasonic cell stimulation. Both the diameter of a single pMUT element and the edge-to-edge gap were 120 μm, and the size of a pMUT array was 2.27 × 6.84 mm, to be placed at the bottom of a Transwell. The measured resonance frequency of a single pMUT element was 1.48 ± 0.13 MHz and the measured acoustic intensity of the pMUT array was 0.15 ± 0.03 MPa at 1 mm away from the transducer...
September 19, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28926605/assessment-of-common-somatic-mutations-of-egfr-kras-braf-nras-in-pulmonary-non-small-cell-carcinoma-using-iplex%C3%A2-hs-a-new-highly-sensitive-assay-for-the-massarray%C3%A2-system
#11
Bobbie C Sutton, Ryan T Birse, Kevin Maggert, Tammy Ray, Jessica Hobbs, Amobi Ezenekwe, Jason Kazmierczak, Michael Mosko, Joan Kish, Andrew Bullock, Zonggao Shi, M Sharon Stack, Darryl Irwin
Increased early detection and personalized therapy for lung cancer have coincided with greater use of minimally invasive sampling techniques such as endobronchial ultrasound-guided biopsy (EBUS), endoscopic ultrasound-guided biopsy (EUS), and navigational biopsy, as well as thin needle core biopsies. As many lung cancer patients have late stage disease and other comorbidities that make open surgical procedures hazardous, the least invasive biopsy technique with the highest potential specimen yield is now the preferred first diagnostic study...
2017: PloS One
https://www.readbyqxmd.com/read/28926263/copper-sulfide-perfluorocarbon-nanodroplets-as-clinically-relevant-photoacoustic-ultrasound-imaging-agents
#12
Daniela Y Santiesteban, Diego S Dumani, Daniel Profili, Stanislav Y Emelianov
We have developed laser-activated perfluorocarbon nanodroplets containing copper sulfide nanoparticles (CuS NPs) for contrast-enhanced ultrasound and photoacoustic imaging. As potential clinical contrast agents, CuS NPs have favorable properties including biocompatibility, biodegradability and enhance contrast in photoacoustic images at clinically relevant depths. However, CuS NPs are not efficient optical absorbers when compared to plasmonic nanoparticles and therefore, contrast enhancement with CuS NPs is limited, requiring high concentrations to generate images with sufficient signal-to-noise ratio...
September 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28925747/protocol-and-quality-assurance-for-carotid-imaging-in-100-000-participants-of-uk-biobank-development-and-assessment
#13
Sean Coffey, Adam J Lewandowski, Steve Garratt, Rudy Meijer, Steven Lynum, Ram Bedi, James Paterson, Mohammad Yaqub, J Alison Noble, Stefan Neubauer, Steffen E Petersen, Naomi Allen, Cathie Sudlow, Rory Collins, Paul M Matthews, Paul Leeson
Background Ultrasound imaging is able to quantify carotid arterial wall structure for the assessment of cerebral and cardiovascular disease risks. We describe a protocol and quality assurance process to enable carotid imaging at large scale that has been developed for the UK Biobank Imaging Enhancement Study of 100,000 individuals. Design An imaging protocol was developed to allow measurement of carotid intima-media thickness from the far wall of both common carotid arteries. Six quality assurance criteria were defined and a web-based interface (Intelligent Ultrasound) was developed to facilitate rapid assessment of images against each criterion...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28925570/first-trimester-screening-based-on-ultrasound-and-cfdna-vs-first-trimester-combined-screening-a-randomized-controlled-study
#14
Karl Oliver Kagan, Fabrina Sroka, Jiri Sonek, Harald Abele, Kai Lüthgens, Maximilian Schmid, Philipp Wagner, Sara Brucker, Diethelm Wallwiener, Markus Hoopmann
OBJECTIVE: Prospective randomized trial to compare the performance of first trimester combined screening (FTCS) with an approach that uses the combination of a detailed ultrasound examination and cfDNA analysis. METHODS: Pregnant women with a normal first-trimester ultrasound examination at 11 to 13 weeks' gestation (fetal NT ≤3.5 mm and no fetal defects) were randomized into two groups. In the first group, the risk of aneuploidy was assessed using FTCS based on the most recent FMF UK algorithm...
September 19, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28925529/cerebrovascular-response-to-the-cold-pressor-test-the-critical-role-of-carbon-dioxide
#15
Michael M Tymko, Thijs P Kerstens, Kevin W Wildfong, Philip N Ainslie
In addition to increasing sympathetic nervous activity, blood pressure, and cerebral blood flow (CBF), the cold pressor test (CPT) stimulates pain receptors, which may increase ventilation above metabolic demand; this response likely reduces the partial pressure of end-tidal carbon dioxide (PET CO2 ), and will attenuate elevations in CBF. We hypothesized: (1) CPT would elicit hyperventilation, effectively lowering PET CO2 ; (2) the CBF response will be elevated during an isocapnic (controlled PET CO2 ), compared to a poikilocapnic CPT (uncontrolled PET CO2 ); (3) In response to CPT, the common carotid artery (CCA) will vasodilatate, while the internal carotid artery (ICA) will remain unchanged to help regulate CBF...
September 19, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28924977/performing-lung-ultrasound-at-rest-and-or-after-an-exercise-stress-test-to-better-identify-high-risk-ambulatory-patients-with-heart-failure
#16
EDITORIAL
Nicolas Girerd, Patrick Rossignol
No abstract text is available yet for this article.
September 18, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28924943/iodized-oil-transarterial-chemoembolization-and-radiofrequency-ablation-for-small-periportal-hepatocellular-carcinoma-comparison-with-nonperiportal-hepatocellular-carcinoma
#17
Sang Yub Lee, Dongho Hyun, Sung Ki Cho, Sung Wook Shin, Sin-Ho Jung, Sang Ah Chi
PURPOSE: This study aims to evaluate the treatment outcomes of iodized oil transarterial chemoembolization (TACE) and subsequent radiofrequency ablation (RFA) for small (≤3 cm) periportal hepatocellular carcinoma (HCC) compared with nonperiportal HCC. METHODS: Twenty-three patients [periportal group (PG); mean age, 59.8 years; 22 men, 1 woman] with periportal HCC (in contact with the portal vein >3 mm in diameter) and 279 patients [nonperiportal group (NPG); mean age, 59...
September 18, 2017: Cardiovascular and Interventional Radiology
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
#18
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/28923645/comparison-of-segmental-versus-longitudinal-intravascular-ultrasound-analysis-for-pediatric-cardiac-allograft-vasculopathy
#19
M A Kuhn, M Burch, R E Chinnock, M J Fenton
Intravascular ultrasound (IVUS) has been routinely used in some centers to investigate cardiac allograft vasculopathy in pediatric heart transplant recipients. We present an alternative method using more sophisticated imaging software. This study presents a comparison of this method with an established standard method. All patients who had IVUS performed in 2014 were retrospectively evaluated. The standard technique consisted of analysis of 10 operator-selected segments along the vessel. Each study was re-evaluated using a longitudinal technique, taken at every third cardiac cycle, along the entire vessel...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28923457/blood-flow-regulation-and-oxidative-stress-during-submaximal-cycling-exercise-in-patients-with-cystic-fibrosis
#20
Matthew A Tucker, Breana Berry, Nichole Seigler, Gareth W Davison, John C Quindry, Dabney Eidson, Kathleen T McKie, Ryan A Harris
BACKGROUND: The impact of blood flow regulation and oxidative stress during exercise in cystic fibrosis (CF) has yet to be investigated. METHODS: A maximal graded exercise test was conducted to determine exercise capacity (VO2 peak) and peak workload in 14 pediatric patients with mild CF (age 14±3y, FEV1 93±16 % predicted) and 14 demographically-matched controls. On a separate visit, participants performed submaximal cycling up to 60% of peak workload where brachial artery blood velocity was determined using Doppler ultrasound...
September 8, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
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