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Focused cardiac ultrasound

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https://www.readbyqxmd.com/read/28076337/coded-excitation-for-diverging-wave-cardiac-imaging-a-feasibility-study
#1
Feifei Zhao, Ling Tong, Qiong He, Jianwen Luo
Diverging wave (DW) based cardiac imaging has gained increasing interest in recent years given its capacity to achieve ultrahigh frame rate. However, the signal-to-noise ratio (SNR), contrast, and penetration depth of the resulting B-mode images are typically low as DWs spread energy over a large region. Coded excitation is known to be capable of increasing the SNR and penetration for ultrasound imaging. The aim of this study was therefore to test the feasibility of applying coded excitation in DW imaging to improve the corresponding SNR, contrast and penetration depth...
January 11, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28063115/bedside-focused-cardiac-ultrasound-in-the-evaluation-of-systolic-dysfunction
#2
Elisa Maria Fiorelli, Francesco Casella, Daniela Torzillo, Chiara Cogliati
No abstract text is available yet for this article.
January 6, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28048023/tu-fg-brb-09-thermoacoustic-range-verification-with-perfect-co-registered-overlay-of-bragg-peak-onto-ultrasound-image
#3
S Patch, M Kireeff Covo, A Jackson, Y Qadadha, K Campbell, R Albright, P Bloemhard, A Donoghue, C Siero, T Gimpel, S Small, B Ninemire, M Johnson, L Phair
PURPOSE: The potential of particle therapy has not yet been fully realized due to inaccuracies in range verification. The purpose of this work was to correlate the Bragg peak location with target structure, by overlaying thermoacoustic localization of the Bragg peak onto an ultrasound image. METHODS: Pulsed delivery of 50 MeV protons was accomplished by a fast chopper installed between the ion source and the inflector of the 88″ cyclotron at Lawrence Berkeley National Lab...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27887762/extracardiac-signs-of-fluid-overload-in-the-critically-ill-cardiac-patient-a-focused-evaluation-using-bedside-ultrasound
#4
REVIEW
William Beaubien-Souligny, Josée Bouchard, Georges Desjardins, Yoan Lamarche, Mark Liszkowski, Pierre Robillard, André Denault
Fluid balance management is of great importance in the critically ill cardiac patient. Although intravenous fluids are a cornerstone therapy in the management of unstable patients, excessive administration coupled with cardiac dysfunction leads to elevation in central venous pressure and end-organ venous congestion. Fluid overload is known to have a detrimental effect on organ function and is responsible for significant morbidity in critically ill patients. Multisystem bedside point of care ultrasound imaging can be used to assess signs of fluid overload and venous congestion in critically ill patients...
January 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/27884577/low-pressure-pericardial-tamponade-case-report-and-review-of-the-literature
#5
Brooks M Walsh, Lauren A Tobias
BACKGROUND: Focused cardiac ultrasound (FoCUS) is accurate for determining the presence of a pericardial effusion. Using FoCUS to evaluate for pericardial tamponade, however, is more involved. Many experts teach that tamponade is unlikely if the inferior vena cava (IVC) shows respiratory variation and is not distended. CASE REPORT: A 53-year-old woman presented to the emergency department (ED) with severe orthostatic hypotension, exertional dyspnea, and hypoxia...
November 21, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27875660/successful-use-of-targeted-temperature-management-after-repair-of-myocardial-rupture-from-blunt-chest-trauma-a-case-report
#6
Wook-Jin Choi, Yun Seok Kim, Jung Seok Hong, Jeong Won Kim
Targeted temperature management (TTM) improves survival and neurological outcome after nontraumatic cardiac arrest. However, TTM is not used widely after traumatic cardiac arrest because of concerns that it might exacerbate bleeding. We report the use of postarrest TTM after repair of blunt myocardial rupture. A 48-year-old man was admitted after being rescued from a major traffic accident by the local emergency service. Focused sonography showed pericardial fluid without cardiac tamponade. Computed tomography showed a large hematoma in the anterior mediastinum associated with hemopericardium...
November 22, 2016: Therapeutic Hypothermia and Temperature Management
https://www.readbyqxmd.com/read/27859331/two-dimensional-echocardiographic-right-ventricle-measurements-adjusted-to-body-mass-index-and-surface-area-in-a-normal-population
#7
Masood Eslami, Farnoush Larti, Mehrdad Larry, Parisa Molaee, Roya Sattarzadeh Badkoobeh, Anahita Tavoosi, Saeed Safari, Amir Farhang Zand Parsa
BACKGROUND: To determine reference echocardiographic values in a normal population and assess their correlation with body mass index (BMI) and body surface area. METHODS: An expert cardiologist performed two-dimensional echocardiography with triplicate right ventricle (RV) size measurements in 80 subjects with normal heart condition. Results were correlated with anthropometric data. RESULTS: Base-to-apex length in four-chamber view (RVD3) and above-pulmonic valve in short-axis view in males, as well as mid-RV diameter in standard four-chamber view (RVD), basal RV diameter, and mid RV diameter in RV-focused four-chamber view in females, were significantly correlated with BMI...
November 14, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27832792/gout-will-the-king-of-diseases-be-the-first-rheumatic-disease-to-be-cured
#8
EDITORIAL
Jasvinder A Singh
Gout is the most common inflammatory arthritis in adults in the Western world. Characterized by hyperuricemia and the effects of acute and chronic inflammation in joints and bursa, gout leads to an agonizing, chronically painful arthritis. Arthritis can also be accompanied by urate nephropathy and subcutaneous urate deposits (tophi). Exciting new developments in the last decade have brought back the focus on this interesting, crystal-induced chronic inflammatory condition. New insights include the role of NALP3 inflammasome-induced inflammation in acute gout, the characterization of diagnostic signs on ultrasound and dual-energy computed tomography imaging modalities, the recognition of target serum urate less than 6 mg/day as the goal for urate-lowering therapies, and evidence-based treatment guidelines...
November 11, 2016: BMC Medicine
https://www.readbyqxmd.com/read/27827415/non-invasive-cardiac-pacing-with-image-guided-focused-ultrasound
#9
Fabrice Marquet, Pierre Bour, Fanny Vaillant, Sana Amraoui, Rémi Dubois, Philippe Ritter, Michel Haïssaguerre, Mélèze Hocini, Olivier Bernus, Bruno Quesson
Currently, no non-invasive cardiac pacing device acceptable for prolonged use in conscious patients exists. High Intensity Focused Ultrasound (HIFU) can be used to perform remote pacing using reversibility of electromechanical coupling of cardiomyocytes. Here we described an extracorporeal cardiac stimulation device and study its efficacy and safety. We conducted experiments ex vivo and in vivo in a large animal model (pig) to evaluate clinical potential of such a technique. The stimulation threshold was determined in 10 different ex vivo hearts and different clinically relevant electrical effects such as consecutive stimulations of different heart chambers with a single ultrasonic probe, continuous pacing or the inducibility of ventricular tachycardia were shown...
November 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27824559/a-comparison-between-compounding-techniques-using-large-beam-steered-plane-wave-imaging-for-blood-vector-velocity-imaging-in-a-carotid-artery-model
#10
Anne E C M Saris, Hendrik H G Hansen, Stein Fekkes, Maartje M Nillesen, Marcel C M Rutten, Chris L de Korte
Conventional color Doppler imaging is limited, since it only provides velocity estimates along the ultrasound beam direction for a restricted field of view at a limited frame rate. High-frame-rate speckle tracking, using plane wave transmits, has shown potential for 2-D blood velocity estimation. However, due to the lack of focusing in transmit, image quality gets reduced, which hampers speckle tracking. Although ultrafast imaging facilitates improved clutter filtering, it still remains a major challenge in blood velocity estimation...
November 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27810806/evaluation-of-the-transverse-oscillation-technique-for-cardiac-phased-array-imaging-a-theoretical-study
#11
Brecht Heyde, Nick Bottenus, Jan D'hooge, Gregg E Trahey
The transverse oscillation (TO) technique can improve the estimation of tissue motion perpendicular to the ultrasound beam direction. TOs can be introduced using plane wave (PW) insonification and bi-lobed Gaussian apodisation (BA) on receive (abbreviated as PWTO). Furthermore, the TO frequency can be doubled after a heterodyning demodulation process is performed (abbreviated as PWTO*). This study is concerned with identifying the limitations of the PWTO technique in the specific context of myocardial deformation imaging with phased arrays and investigating the conditions in which it remains advantageous over traditional focused (FOC) beamforming...
October 28, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27768664/bridging-the-gap-hybrid-cardiac-echo-in-the-critically-ill
#12
Jacob J Glaser, Cassandra Cardarelli, Samuel Galvagno, Thomas M Scalea, Sarah B Murthi
BACKGROUND: Point-of-care ultrasound often includes cardiac ultrasound. It is commonly used to evaluate cardiac function in critically ill patients but lacks the specific quantitative anatomic assessment afforded by standard transthoracic echocardiography (TTE). We developed the Focused Rapid Echocardiographic Examination (FREE), a hybrid between a cardiac ultrasound and TTE that places an emphasis on cardiac function rather than anatomy. We hypothesized that data obtained from FREE correlate well with TTE while providing actionable information for clinical decision making...
November 2016: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/27764871/-hemodynamic-monitoring-imaging-procedures%C3%A2-%C3%A2-cardiac-ultrasound
#13
Gerhard Batz, Michael Dinkel
Echocardiography as an imaging method in anaesthesia and intensive care medicine has enabled a new dimension of hemodynamic monitoring: the direct visualization of the cardiac function and its disruptions. Preconditions for a broad application in this area was the development of mobile, high-definition ultrasonic devices and the origination of focused examination techniques. A successful application of this method requires the respective know-how of the examiner, in order to take relevant decisions and avoid misdiagnoses...
October 2016: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/27739636/emergency-medicine-resident-assessment-of-the-emergency-ultrasound-milestones-and-current-training-recommendations
#14
Lori A Stolz, Uwe Stolz, J Matthew Fields, Turandot Saul, Michael Secko, Matthew J Flannigan, Johnathan M Sheele, Robert P Rifenburg, Anthony J Weekes, Elaine B Josephson, John Bedolla, Dana M Resop, Jonathan Dela Cruz, Megan Boysen-Osborn, Terrell Caffery, Charlotte Derr, Rimon Bengiamin, Gerardo Chiricolo, Brandon Backlund, Jagdipak Heer, Robert J Hyde, Srikar Adhikari
OBJECTIVES: Emergency ultrasound (EUS) has been recognized as integral to the training and practice of emergency medicine (EM). The Council of Emergency Medicine Residency-Academy of Emergency Ultrasound (CORD-AEUS) consensus document provides guidelines for resident assessment and progression. The Accredited Council for Graduate Medical Education (ACGME) has adopted the EM Milestones for assessment of residents' progress during their residency training which includes demonstration of procedural competency in bedside ultrasound...
October 14, 2016: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/27718271/neuropsychiatric-aspects-of-22q11-2-deletion-syndrome-considerations-in-the-prenatal-setting
#15
Anne S Bassett, Gregory Costain, Christian R Marshall
Most major neuropsychiatric outcomes of concern to families are not detectable by prenatal ultrasound. The introduction of genome-wide chromosomal microarray analysis to prenatal clinical diagnostic testing has increased the detection of pathogenic 22q11.2 deletions, which cause the most common genomic disorder. The recent addition of this and other microdeletions to non-invasive prenatal screening methods using cell-free fetal DNA has further propelled interest in outcomes. Conditions associated with 22q11...
January 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27711214/progressive-dystrophic-pathology-in-diaphragm-and-impairment-of-cardiac-function-in-fkrp-p448l-mutant-mice
#16
Anthony Blaeser, Hiroyuki Awano, Bo Wu, Qi-Long Lu
Mutations in the gene for fukutin-related protein represent a subset of muscular dystrophies known as dystroglycanopathies characterized by loss of functionally-glycosylated-alpha-dystroglycan and a wide range of dystrophic phenotypes. Mice generated by our lab containing the P448L mutation in the fukutin-related protein gene demonstrate the dystrophic phenotype similar to that of LGMD2I. Here we examined the morphology of the heart and diaphragm, focusing on pathology of diaphragm and cardiac function of the mutant mice for up to 12 months...
2016: PloS One
https://www.readbyqxmd.com/read/27705994/how-to-train-and-maintain-pediatric-intensivists-updated-in-focused-cardiac-ultrasound
#17
Heloisa Amaral Gaspar, Werther Brunow de Carvalho, Artur Figueiredo Delgado
No abstract text is available yet for this article.
October 2016: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/27628295/current-clinical-applications-of-three-dimensional-echocardiography-when-the-technique-makes-the-difference
#18
REVIEW
Elena Surkova, Denisa Muraru, Patrizia Aruta, Gabriella Romeo, Jurate Bidviene, Diana Cherata, Luigi P Badano
Advances in ultrasound, computer, and electronics technology have permitted three-dimensional echocardiography (3DE) to become a clinically viable imaging modality, with significant impact on patient diagnosis, management, and outcome. Thanks to the inception of a fully sampled matrix transducer for transthoracic and transesophageal probes, 3DE now offers much faster and easier data acquisition, immediate display of anatomy, and the possibility of online quantitative analysis of cardiac chambers and heart valves...
November 2016: Current Cardiology Reports
https://www.readbyqxmd.com/read/27623578/a-comparison-between-compounding-techniques-using-large-beam-steered-plane-wave-imaging-for-blood-vector-velocity-imaging-in-a-carotid-artery-model
#19
Anne Saris, Hendrik Hansen, Stein Fekkes, Maartje Nillesen, Marcel Rutten, Chris de Korte
Conventional color Doppler imaging is limited, since it only provides velocity estimates along the ultrasound beam direction for a restricted field of view at a limited frame rate. High frame rate speckle tracking, using plane wave transmits, has shown potential for 2D blood velocity estimation. However, due to the lack of focusing in transmit, image quality gets reduced, which hampers speckle tracking. Although ultrafast imaging facilitates improved clutter filtering, it still remains a major challenge in blood velocity estimation...
September 7, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27604617/12th-winfocus-world-congress-on-ultrasound-in-emergency-and-critical-care
#20
Yahya Acar, Onur Tezel, Necati Salman, Erdem Cevik, Margarita Algaba-Montes, Alberto Oviedo-García, Mayra Patricio-Bordomás, Mustafa Z Mahmoud, Abdelmoneim Sulieman, Abbas Ali, Alrayah Mustafa, Ihab Abdelrahman, Mustafa Bahar, Osama Ali, H Lester Kirchner, Gregor Prosen, Ajda Anzic, Paul Leeson, Maryam Bahreini, Fatemeh Rasooli, Houman Hosseinnejad, Gabriel Blecher, Robert Meek, Diana Egerton-Warburton, Edina Ćatić Ćuti, Stanko Belina, Tihomir Vančina, Idriz Kovačević, Nadan Rustemović, Ikwan Chang, Jin Hee Lee, Young Ho Kwak, Do Kyun Kim, Chi-Yung Cheng, Hsiu-Yung Pan, Chia-Te Kung, Ela Ćurčić, Ena Pritišanac, Ivo Planinc, Marijana Grgić Medić, Radovan Radonić, Abiola Fasina, Anthony J Dean, Nova L Panebianco, Patricia S Henwood, Oliviero Fochi, Moreno Favarato, Ezio Bonanomi, Ivan Tomić, Youngrock Ha, Hongchuen Toh, Elizabeth Harmon, Wilma Chan, Cameron Baston, Gail Morrison, Frances Shofer, Angela Hua, Sharon Kim, James Tsung, Isa Gunaydin, Zeynep Kekec, Mehmet Oguzhan Ay, Jinjoo Kim, Jinhyun Kim, Gyoosung Choi, Dowon Shim, Ji-Han Lee, Jana Ambrozic, Katja Prokselj, Miha Lucovnik, Gabrijela Brzan Simenc, Asta Mačiulienė, Almantas Maleckas, Algimantas Kriščiukaitis, Vytautas Mačiulis, Andrius Macas, Sharad Mohite, Zoltan Narancsik, Hugon Možina, Sara Nikolić, Jan Hansel, Rok Petrovčič, Una Mršić, Simon Orlob, Markus Lerchbaumer, Niklas Schönegger, Reinhard Kaufmann, Chun-I Pan, Chien-Hung Wu, Sarah Pasquale, Stephanie J Doniger, Sharon Yellin, Gerardo Chiricolo, Maja Potisek, Borut Drnovšek, Boštjan Leskovar, Kristine Robinson, Clara Kraft, Benjamin Moser, Stephen Davis, Shelley Layman, Yusef Sayeed, Joseph Minardi, Irmina Sefic Pasic, Amra Dzananovic, Anes Pasic, Sandra Vegar Zubovic, Ana Godan Hauptman, Ana Vujaklija Brajkovic, Jaksa Babel, Marina Peklic, Vedran Radonic, Luka Bielen, Peh Wee Ming, Nur Hafiza Yezid, Fatahul Laham Mohammed, Zainal Abidin Huda, Wan Nasarudin Wan Ismail, W Yus Haniff W Isa, Hashairi Fauzi, Praveena Seeva, Mohd Zulfakar Mazlan
A1 Point-of-care ultrasound examination of cervical spine in emergency departmentYahya Acar, Onur Tezel, Necati SalmanA2 A new technique in verifying the placement of a nasogastric tube: obtaining the longitudinal view of nasogastric tube in addition to transverse view with ultrasoundYahya Acar, Necati Salman, Onur Tezel, Erdem CevikA3 Pseudoaneurysm of the femoral artery after cannulation of a central venous line. Should we always use ultrasound in these procedures?Margarita Algaba-Montes, Alberto Oviedo-García, Mayra Patricio-BordomásA4 Ultrasound-guided supraclavicular subclavian vein catheterization...
September 2016: Critical Ultrasound Journal
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