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Ultrasound testes

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https://www.readbyqxmd.com/read/28742869/ultrasound-non-invasive-measurement-of-intracranial-pressure-in-neurointensive-care-a-prospective-observational-study
#1
Chiara Robba, Danilo Cardim, Tamara Tajsic, Justine Pietersen, Michael Bulman, Joseph Donnelly, Andrea Lavinio, Arun Gupta, David K Menon, Peter J A Hutchinson, Marek Czosnyka
BACKGROUND: The invasive nature of the current methods for monitoring of intracranial pressure (ICP) has prevented their use in many clinical situations. Several attempts have been made to develop methods to monitor ICP non-invasively. The aim of this study is to assess the relationship between ultrasound-based non-invasive ICP (nICP) and invasive ICP measurement in neurocritical care patients. METHODS AND FINDINGS: This was a prospective, single-cohort observational study of patients admitted to a tertiary neurocritical care unit...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28742794/the-cost-effectiveness-of-screening-for-ovarian-cancer-results-from-the-uk-collaborative-trial-of-ovarian-cancer-screening-ukctocs
#2
Usha Menon, Alistair J McGuire, Maria Raikou, Andy Ryan, Susan K Davies, Matthew Burnell, Aleksandra Gentry-Maharaj, Jatinderpal K Kalsi, Naveena Singh, Nazar N Amso, Derek Cruickshank, Stephen Dobbs, Keith Godfrey, Jonathan Herod, Simon Leeson, Tim Mould, John Murdoch, David Oram, Ian Scott, Mourad W Seif, Karin Williamson, Robert Woolas, Lesley Fallowfield, Stuart Campbell, Steven J Skates, Mahesh Parmar, Ian J Jacobs
BACKGROUND: To assess the within-trial cost-effectiveness of an NHS ovarian cancer screening (OCS) programme using data from UKCTOCS and extrapolate results based on average life expectancy. METHODS: Within-trial economic evaluation of no screening (C) vs either (1) an annual OCS programme using transvaginal ultrasound (USS) or (2) an annual ovarian cancer multimodal screening programme with serum CA125 interpreted using a risk algorithm (ROCA) and transvaginal ultrasound as a second-line test (MMS), plus comparison of lifetime extrapolation of the no screening arm and the MMS programme using both a predictive and a Markov model...
July 25, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28742033/the-impact-of-model-based-clutter-suppression-on-cluttered-aberrated-wavefronts
#3
Kazuyuki Dei, Brett Byram
Recent studies reveal that both phase aberration and reverberation play a major role in degrading ultrasound image quality. We previously developed an algorithm for suppressing clutter, but we have not yet tested it in the context of aberrated wavefronts. In this study, we evaluate our previously reported algorithm, called aperture domain model image reconstruction (ADMIRE), in the presence of phase aberration and in the presence of multipath scattering and phase aberration. We use simulations to investigate phase aberration corruption and correction in the presence of reverberation...
July 20, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28742032/architecture-of-an-ultrasound-system-for-continuous-real-time-high-frame-rate-imaging
#4
Enrico Boni, Luca Bassi, Alessandro Dallai, Valentino Meacci, Alessandro Ramalli, Monica Scaringella, Francesco Guidi, Stefano Ricci, Piero Tortoli
High frame rate (HFR) imaging methods based on the transmission of defocused or plane waves rather than focused beams are increasingly popular. However, the production of HFR images poses severe requirements both in the transmission and the reception sections of ultrasound scanners. In particular, major technical difficulties arise if the images must be continuously produced in real-time, i.e. without any acquisition interruption nor loss of data. This paper presents the implementation of the real-time HFR compounded imaging application in the ULA-OP 256 research platform...
July 20, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28741145/thigh-muscle-and-subcutaneous-tissue-thickness-measured-using-ultrasound-imaging-in-older-females-living-in-extended-care-a-preliminary-study
#5
Daniella Welch, Laetitia Sungu Ndanyo, Simon Brown, Sandra Agyapong-Badu, Martin Warner, Maria Stokes, Dinesh Samuel
BACKGROUND: Thigh tissue thickness has not been examined in older females living in extended care in UK as an indicator of musculoskeletal health. This study examined the feasibility of using ultrasound imaging to measure the thickness of superficial (fat) and deep layers (muscle) of the thigh in older females living in extended care. METHODS: In ten older females in extended care (aged 80-98 years, mean 88 ± 6.8; body mass: 56.5 ± 12.6 kg) images of the anterior thigh (dominant) were taken in supine using B-mode ultrasound imaging...
July 24, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28740946/is-it-necessary-to-perform-prophylactic-cholecystectomy-for-all-symptomatic-gallbladder-polyps-diagnosed-with-ultrasound
#6
Mehmet Velidedeoğlu, Bülent Çitgez, Akif Enes Arıkan, Fadıl Ayan
OBJECTIVE: The main aim of this study is to determine the necessity of cholecystectomy in patients with ultrasound diagnosed symptomatic polypoid lesions of the gallbladder. MATERIAL AND METHODS: The data of 82 patients with polypoid lesions of the gallbladder who had cholecystectomy between 2000 and 2012 were analyzed retrospectively with preoperative ultrasound and histopathology results. RESULTS: The mean age was 48.05±11.18 years (range 25-74 years)...
2017: Turk J Surg
https://www.readbyqxmd.com/read/28740627/correlation-between-severity-of-ultrasonographic-nonalcoholic-fatty-liver-disease-and-cardiometabolic-risk-among-filipino-wellness-patients
#7
Lucky R Cuenza, Tamara Louise J Razon, Juan Carlo Dayrit
Introduction: Nonalcoholic fatty liver disease (NAFLD) is a prevalent condition which is known to be related to factors that predispose to the development of coronary artery disease as well as development of metabolic syndrome. The study aimed to determine the association between ultrasound-based grading of hepatic steatosis with metabolic profile and estimated cardiovascular risk using the Framingham Risk Score (FRS). Methods: This was a cross-sectional study on 100 Filipino patients without established cardiovascular disease who underwent a general wellness health evaluation...
2017: Journal of Cardiovascular and Thoracic Research
https://www.readbyqxmd.com/read/28740456/carotid-artery-stiffness-digital-endothelial-function-and-coronary-calcium-in-patients-with-essential-thrombocytosis-free-of-overt-atherosclerotic-disease
#8
Matjaz Vrtovec, Ajda Anzic, Irena Preloznik Zupan, Katja Zaletel, Ales Blinc
BACKGROUND: Patients with myeloproliferative neoplasms (MPNs) are at increased risk for atherothrombotic events. Our aim was to determine if patients with essential thrombocytosis (ET), a subtype of MPNs, free of symptomatic atherosclerosis, have greater carotid artery stiffness, worse endothelial function, greater coronary calcium and carotid plaque burden than control subjects. PATIENTS AND METHODS: 40 ET patients without overt vascular disease, and 42 apparently healthy, age and sex-matched control subjects with comparable classical risk factors for atherosclerosis and Framingham risk of coronary disease were enrolled...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28740429/comparative-diagnostic-accuracy-of-18f-fdg-pet-ct-for-breast-cancer-recurrence
#9
REVIEW
Roberta Piva, Flavia Ticconi, Valentina Ceriani, Federica Scalorbi, Francesco Fiz, Selene Capitanio, Matteo Bauckneht, Giuseppe Cittadini, Gianmario Sambuceti, Silvia Morbelli
In the last decades, in addition to conventional imaging techniques and magnetic resonance imaging (MRI), (18)F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) has been shown to be relevant in the detection and management of breast cancer recurrence in doubtful cases in selected groups of patients. While there are no conclusive data indicating that imaging tests, including FDG PET/CT, produce a survival benefit in asymptomatic patients, FDG PET/CT can be useful for identifying the site of relapse when traditional imaging methods are equivocal or conflicting and for identifying or confirming isolated loco-regional relapse or isolated metastatic lesions...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28739554/46-xy-disorder-of-sex-development-due-to-17-beta-hydroxysteroid-dehydrogenase-type-3-deficiency-in-an-infant-of-greek-origin
#10
Assimina Galli-Tsinopoulou, Anastasios Serbis, Eleni Kotanidou, Eleni Litou, Vaia Dokousli, Konstantina Mouzaki, Pavlos Fanis, Vassos Neocleous, Nicos Skordis
17β-hydroxysteroid dehydrogenase type 3 (17βHSD-3) enzyme catalyzes the conversion of androstenedione (Δ4) to testosterone (T) in the testes of the developing fetus, thus playing a crucial role in the differentiation of the gonads and in establishing the male sex phenotype. Any mutation in the encoding gene (HSD17B3) can lead to a varying degree of undervirilization of the affected male that ranges from completely undervirilized external female genitalia to predominantly male with micropenis and hypospadias...
July 24, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28737866/algorithms-imaging-tests-comparison-following-the-first-febrile-urinary-tract-infection-in-children
#11
María M Tombesi, Laura F Alconcher, Lucas Lucarelli, Agustina Ciccioli
OBJETIVES: To compare the diagnostic sensitivity, costs and radiation doses of imaging tests algorithms developed by the Argentine Society of Pediatrics in 2003 and 2015, against British and American guidelines after the first febrile urinary tract infection (UTI). POPULATION AND METHODS: Inclusion criteria: children ≤ 2 years old with their first febrile UTI and normal ultrasound, voiding cystourethrography and dimercaptosuccinic acid scintigraphy, according to the algorithm established by the Argentine Society of Pediatrics in 2003, treated between 2003 and 2010...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28737304/investigation-and-diagnostic-formulation-in-patients-admitted-with-transient-loss-of-consciousness
#12
R Briggs, T Coughlan, J Doherty, D R Collins, D O'Neill, S P Kennelly
Several commonly completed tests have low diagnostic yield in the setting of transient loss of consciousness (T-LOC). We estimated the use and cost of inappropriate investigations in patients admitted with T-LOC and assessed if these patients were given a definitive diagnosis for their presentation. We identified 80 consecutive patients admitted with T-LOC to a university teaching hospital. Eighty-eight percent (70/80) had a computerized topography (CT) brain scan and 49% (34/70) of these scans were inappropriate based on standard guidelines...
May 10, 2017: Irish Medical Journal
https://www.readbyqxmd.com/read/28736947/intraobserver-and-interobserver-variability-in-ultrasound-measurements-of-thyroid-nodules
#13
Hyung Jin Lee, Dae Young Yoon, Young Lan Seo, Jin Ho Kim, Sora Baek, Kyoung Ja Lim, Young Kwon Cho, Eun Joo Yun
OBJECTIVES: The purpose of this study was to assess the intraobserver and interobserver variability in ultrasound (US) measurements of thyroid nodules. METHODS: We performed a prospective study of the US examinations of 73 patients with 122 thyroid nodules greater than 5 mm in size. Ultrasound measurements in 4 dimensions (anteroposterior, transverse, longitudinal, and maximum diameters) and measurement of the estimated volume (using the ellipsoid formula) of each thyroid nodule were performed twice by 2 independent radiologists (A and B, with 10 years and 6 months of experience, respectively)...
July 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28736862/quality-management-of-ultrasound-surveillance-for-hepatocellular-carcinoma-under-the-korean-national-cancer-screening-program
#14
Moon Hyung Choi, Seung Eun Jung, Joon-Il Choi, Woo Kyoung Jeong, Hyun Cheol Kim, Yongsoo Kim, Yeol Kim, Boyoung Park
OBJECTIVES: The aim of this study was to investigate the quality of ultrasound (US) examinations for hepatocellular carcinoma surveillance under the Korean National Cancer Screening Program and to assess knowledge and experience about liver US of physicians who perform US examinations. METHODS: The investigation about the quality of liver US for hepatocellular carcinoma screening was based on the results of a nationwide quality assurance (QA) evaluation between 2012 and 2014 at all medical institutions participating in the National Cancer Screening Program...
July 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28736704/visualization-of-photoacoustic-images-in-a-limited-view-measuring-system-using-eigenvalues-of-a-photoacoustic-transmission-matrix
#15
Hiroshi Abe, Tsuyoshi Shiina
Photoacoustic imaging is a unique imaging method that involves extracting information from points at different depths, an advantage of ultrasound imaging, while maintaining functional information, a key feature of conventional photo imaging. This makes it easy to add functional images to ultrasound images by adding a laser pulse source to the conventional ultrasound imaging device and detecting a photo-ultrasound signal via a conventional ultrasound probe. One challenge when using normal one-dimensional (1D) probes and generating photoacoustic images is the limited-view problem, in which artefacts are observed due to the positions of the ultrasound transducers...
December 2017: Photoacoustics
https://www.readbyqxmd.com/read/28736620/peroneal-tendon-disorders
#16
REVIEW
Kinner Davda, Karan Malhotra, Paul O'Donnell, Dishan Singh, Nicholas Cullen
Pathological abnormality of the peroneal tendons is an under-appreciated source of lateral hindfoot pain and dysfunction that can be difficult to distinguish from lateral ankle ligament injuries.Enclosed within the lateral compartment of the leg, the peroneal tendons are the primary evertors of the foot and function as lateral ankle stabilisers.Pathology of the tendons falls into three broad categories: tendinitis and tenosynovitis, tendon subluxation and dislocation, and tendon splits and tears. These can be associated with ankle instability, hindfoot deformity and anomalous anatomy such as a low lying peroneus brevis or peroneus quartus...
June 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28735845/anterior-and-posterior-bands-of-the-anterior-bundle-in-the-elbow-ulnar-collateral-ligament-ultrasound-anatomy
#17
Masahito Yoshida, Hideyuki Goto, Tetsuya Takenaga, Atsushi Tsuchiya, Katsumasa Sugimoto, Volker Musahl, Freddie Fu, Takanobu Otsuka
BACKGROUND: The anterior oblique bundle (AOL) of the ulnar collateral ligament (UCL) is composed of anterior and posterior bands. This study evaluated the anatomy of the anterior and posterior bands in the AOL of the UCL for their separate visualization with ultrasound (US). METHODS: We dissected 18 cadaveric elbow joints and recorded the direction of each band from the lateral view to determine the proper position for the US transducer. To determine the proper inclination of the transducer, we measured the inclinations of each band at the proximal and distal insertions from the transverse view...
July 20, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28735735/random-forest-based-bone-segmentation-in-ultrasound
#18
Nora Baka, Sieger Leenstra, Theo van Walsum
Ultrasound (US) imaging is a safe alternative to radiography for guidance during minimally invasive orthopedic procedures. However, ultrasound is challenging to interpret because of the relatively low signal-to-noise ratio and its inherent speckle pattern that decreases image quality. Here we describe a method for automatic bone segmentation in 2-D ultrasound images using a patch-based random forest classifier and several ultrasound specific features, such as shadowing. We illustrate that existing shadow features are not robust to changes in US acquisition parameters, and propose a novel robust shadow feature...
July 20, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28735703/ovarian-mass-differentiating-benign-from-malignant-the-value-of-the-international-ovarian-tumor-analysis-iota-ultrasound-rules
#19
Jacques S Abramowicz, Dirk Timmerman
Ovarian cancer, the fifth most common cause of cancer death among women, has the highest mortality rate of all gynecologic cancers. General survival rate is under 50% but can reach 90% if disease is detected early. Ultrasound is presently the best modality to differentiate between benign and malignant status. The patient with a malignant mass should be referred to an oncology surgeon since results have been shown to be superior to treatment by a specialist. Several ultrasound-based scoring systems exist for assessing the risk of an ovarian tumor to be malignant...
July 20, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28734571/multimodal-ultrasound-computer-assisted-tomography-an-approach-to-the-recognition-of-breast-lesions
#20
Krzysztof J Opieliński, Piotr Pruchnicki, Paweł Szymanowski, Wioletta K Szepieniec, Hanna Szweda, Elżbieta Świś, Marcin Jóźwik, Michał Tenderenda, Mariusz Bułkowski
The research here presented aims at developing a new, promising method for the imaging diagnostics of breast lesions - ultrasound tomography (UST). A currently implemented device enables the reconstruction three complementary images for each coronal breast section. Based on in vivo breast examination, the authors developed an approach to breast diagnostics which employs ultrasound transmission and reflection tomography imaging. The obtained transmission images of ultrasound speed distribution show good correlation of glandular tissue areas with their visualization on MRI images...
July 3, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
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