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https://www.readbyqxmd.com/read/28228822/the-feasibility-of-implementation-of-ultrasound-equipment-standards-set-by-united-kingdom-professional-bodies
#1
Nicholas J Dudley, Debbie Harries, Jessica Wardle
INTRODUCTION: The Royal College of Radiologists and the Society and College of Radiographers in the United Kingdom published 'Standards for the provision of an ultrasound service', including application-specific limiting values for resolution and penetration. No measurement methods were detailed. We aimed to explore a possible theoretical basis for the standards and to develop a measurement protocol. METHODS: Since application-specific standards fail to account for probes of different frequencies used for similar applications and no evidence for the standards was provided, we developed generic standards based on theoretical considerations...
February 2017: Ultrasound: Journal of the British Medical Ultrasound Society
https://www.readbyqxmd.com/read/28228820/temperature-elevation-measured-in-a-tissue-mimicking-phantom-for-transvaginal-ultrasound-at-clinical-settings
#2
Piero Miloro, Eleanor Martin, Adam Shaw
INTRODUCTION: This paper reports the results of an audit to assess the possible thermal hazard associated with the clinical use of ultrasound scanners in UK Hospitals for transvaginal ultrasound imaging. METHODS: An anatomically relevant phantom composed of a block of agar-based tissue mimicking material with embedded thermal sensors was developed. Seventeen hospitals around the UK were visited and a total of 64 configurations were tested. A representative typical scanning protocol was adopted, which primarily used B-mode with 30 s periods of colour-flow and pulsed Doppler modes for both gynaecology and obstetrics pre-sets...
February 2017: Ultrasound: Journal of the British Medical Ultrasound Society
https://www.readbyqxmd.com/read/28227418/automatic-pneumonia-detection-based-on-ultrasound-video-analysis
#3
Pedro Cisneros-Velarde, Malena Correa, Holger Mayta, Cynthia Anticona, Monica Pajuelo, Richard Oberhelman, William Checkley, Robert H Gilman, Dante Figueroa, Mirko Zimic, Roberto Lavarello, Benjamin Castaneda, Pedro Cisneros-Velarde, Malena Correa, Holger Mayta, Cynthia Anticona, Monica Pajuelo, Richard Oberhelman, William Checkley, Robert H Gilman, Dante Figueroa, Mirko Zimic, Roberto Lavarello, Benjamin Castaneda, Robert H Gilman, Holger Mayta, Monica Pajuelo, Cynthia Anticona, Roberto Lavarello, Dante Figueroa, Pedro Cisneros-Velarde, Richard Oberhelman, Mirko Zimic, Benjamin Castaneda, William Checkley, Malena Correa
Pneumonia is a disease which causes high mortality in children under five years old, particularly in developing countries. This paper proposes a novel application of ultrasound video analysis for the detection of pneumonia. This application is based on the processing of small video chunks, in which an image processing algorithm analyzes each frame to get some overall video statistics. Then, based on these quantities, the likeness of presence of pneumonia in the video is determined. The algorithm exploits different geometrical properties of typical anatomical and pathological features that commonly appear in lung sonography and which are already clinically typified in the literature...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227119/clinical-viability-of-carotid-plaque-strain-estimation-using-b-mode-ultrasound-image-sequences
#4
Amir A Khan, Joseph C Hecker, Brajesh K Lal, Siddhartha Sikdar, Amir A Khan, Joseph C Hecker, Brajesh K Lal, Siddhartha Sikdar, Siddhartha Sikdar, Brajesh K Lal, Amir A Khan, Joseph C Hecker
It is estimated that approximately 30% of ischemic strokes are caused by rupture of plaque in the carotid artery. Development of techniques focusing on identifying plaques that are vulnerable to rupture is thus indispensable for stroke prevention. Recent studies have demonstrated that motion analysis of plaques from B-mode and RF ultrasound (US) image sequences can be used to estimate plaque strain. However, viability of these methods in a clinical setting, with variable acquisition protocols, has not been demonstrated yet...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225634/journal-club-ultrasound-guided-breast-interventions-low-incidence-of-infectious-complications-with-use-of-an-uncovered-probe
#5
Chris Reisenauer, Robert T Fazzio, Gina Hesley
OBJECTIVE: The purpose of this study was to determine the incidence of infectious complications after ultrasound-guided breast interventions performed with an intermediate-level disinfection protocol without an ultrasound probe cover. MATERIALS AND METHODS: Two independent institutional databases were searched to identify breast infections in patients who underwent ultrasound-guided interventions between January 2005 and July 2013. The departments of radiology and infectious diseases independently maintained these databases...
February 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28216698/clinical-application-of-point-of-care-transthoracic-echocardiography-in-perioperative-period
#6
REVIEW
Swaroop Margale, Kurichi Marudhachalam, Sarvesh Natani
Transthoracic echocardiography (TTE) has established its role for diagnosis and management in cardiology and is used by various other specialities in medicine, but it is not routinely practised by anaesthesiologists in the perioperative period including the pre-admission clinic/outpatient clinic. The last decade has seen the emerging role of anaesthesiologist as a 'Perioperative physician'. This review article highlights the potential role and clinical utility, education, teaching and limitations of point of care (POC) TTE modality in perioperative care...
January 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28215930/ultrasound-guided-resuscitative-endovascular-balloon-occlusion-of-the-aorta-in-the-resuscitation-area
#7
Takayuki Ogura, Alan Kawarai Lefor, Mitsunobu Nakamura, Kenji Fujizuka, Kousuke Shiroto, Minoru Nakano
BACKGROUND: In trauma resuscitation with resuscitative endovascular balloon occlusion of the aorta (REBOA), urgent and accurate placement of the catheter in the resuscitation area without fluoroscopy can shorten the time from admission to REBOA, allowing rapid, temporary control of bleeding. DISCUSSION: The experience-based protocol in our center for ultrasound-guided REBOA in the resuscitation area without fluoroscopy is as follows: the femoral artery is punctured and a guidewire inserted; sonography is used to verify that the guidewire is in the abdominal aorta; the position of the balloon is confirmed with ultrasound after estimating the distance to the clavicle, and the pressure in the radial artery and sheath is used to monitor correct positioning; connect the pressure transducer to the catheter sheath for continuous monitoring of the blood pressure in the sheath, and inflate the balloon until the blood pressure tracing at the sheath has disappeared; check the pulse in the left radial artery, and withdraw the catheter slightly if the pulse in the radial artery is not palpable or is decreased (if this pulse is not palpable or decreased, the balloon is in the aortic arch)...
February 17, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28215611/effectiveness-of-prolotherapy-in-the-treatment-of-chronic-rotator-cuff-lesions
#8
Mehmet Murat Seven, Omer Ersen, Serkan Akpancar, Huseyin Ozkan, Selim Turkkan, Yavuz Yıldız, Kenan Koca
BACKGROUND: Rotator cuff lesions are one of the major causes of shoulder pain and dysfunction. Numerous non-surgical treatment modalities have been described for chronic rotator cuff lesions, but the debate continues over the optimal procedure. The aim of this report is to present the results of prolotherapy in the treatment of chronic refractory rotator cuff lesions. HYPOTHESIS: Dextrose prolotherapy will reduce pain and improve shoulder function and patient satisfaction...
February 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28214482/catheter-directed-ultrasound-assisted-thrombolysis-is-a-safe-and-effective-treatment-for-pulmonary-embolism-even-in-high-risk-patients
#9
Kristen A Lee, Andrew Cha, Mark H Kumar, Combiz Rezayat, Clifford M Sales
OBJECTIVE: We sought to assess the early success and safety of catheter-directed, ultrasound-assisted (CDUA) thrombolysis for acute pulmonary embolism (PE) in patients deemed to be "high risk" for thrombolytic therapy. METHODS: A retrospective evaluation of patients who underwent CDUA pulmonary thrombolysis in our practice during 39 months is reported. There were 91 patients considered, all of whom presented with acute PE as diagnosed by computed tomography angiography...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28213240/sensitive-and-precise-monitoring-of-phosphatidylethanol-in-human-blood-as-a-biomarker-for-alcohol-intake-by-ultrasound-assisted-dispersive-liquid-liquid-microextraction-combined-with-liquid-chromatography-tandem-mass-spectrometry
#10
Siming Wang, Ruiyue Yang, Fusui Ji, Hongxia Li, Jun Dong, Wenxiang Chen
Phosphatidylethanol (PEth) is a special phospholipid that is only formed in the presence of ethanol, and therefore, serves as a promising biomarker for alcohol intake. In this study, a simple, rapid and precise method based on LC-MS/MS combined with ultrasound-assisted dispersive liquid-liquid microextraction was developed and validated for the measurements of PEth (16:0/18:1, 16:0/18:2, 16:0/16:0, and 18:1/18:1) in human blood. The influences of several variables for sample extraction and MS detection were carefully investigated...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28211804/comparison-of-elastography-based-on-transvaginal-ultrasound-and-mri-in-assessing-parametrial-invasion-of-cervical-cancer
#11
Xi Ma, Qi Li, Jian-Liang Wang, Jun Shao, Yu-Chun Zhu, Wei Ding, Hou-Sheng Zhang, Hong-Yan Wang, Jun-Kang Shen
OBJECTIVE: The purpose of this study was to evaluate the clinical value of transvaginal elastography (TVES) combined with high-resolution transvaginal ultrasound (TVS) in the detection of parametrial invasion in cervical cancer and to compare the diagnostic performance with magnetic resonance imaging (MRI). MATERIALS AND METHODS: 52 women with histologically confirmed cervical cancer over a 2-year period were staged using International Federation of Gynecology and Obstetrics (FIGO) criteria and underwent MRI and TVES combined with TVS according to a standardized protocol before treatment...
February 17, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28209559/irreversible-electroporation-for-the-ablation-of-renal-cell-carcinoma-a-prospective-human-in-vivo-study-protocol-ideal-phase-2b
#12
Mara Buijs, Krijn P van Lienden, Peter Gk Wagstaff, Matthijs Jv Scheltema, Daniel M de Bruin, Patricia J Zondervan, Otto M van Delden, Ton G van Leeuwen, Jean Jmch de la Rosette, M Pilar Laguna
BACKGROUND: Irreversible electroporation (IRE) is an emerging technique delivering electrical pulses to ablate tissue, with the theoretical advantage to overcome the main shortcomings of conventional thermal ablation. Recent short-term research showed that IRE for the ablation of renal masses is a safe and feasible treatment option. In an ablate and resect design, histopathological analysis 4 weeks after radical nephrectomy demonstrated that IRE-targeted renal tumors were completely covered by ablation zone...
February 16, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28208908/comparison-of-carotid-intima-media-thickness-in-children-of-patients-with-and-without-premature-coronary-artery-disease
#13
Alagesan Murali, Anith Kumar Mambatta, R R M Ranganathan, R Shanmugasundaram, K Deepalakshmi
INTRODUCTION: Increased Carotid Intima Medial Thickness (CIMT) is associated with cardiovascular risk factors and vascular events like Coronary Artery Disease (CAD) and stroke. AIM: This study was designed to identify whether CIMT is increased in the children of parents with premature coronary artery disease and compare it with age and sex matched controls who are children of normal individuals. We also tried to compare and correlate the changes in CIMT if any, among the study group with relation to family history of diabetes and hypertension...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28202349/muscle-ultrasound-and-sarcopenia-in-older-individuals-a-clinical-perspective
#14
REVIEW
Andrea Ticinesi, Tiziana Meschi, Marco V Narici, Fulvio Lauretani, Marcello Maggio
INTRODUCTION: A precise quantitative measurement of skeletal muscle mass is fundamental for diagnosing sarcopenia in older individuals. The current techniques of assessment, including dual-energy x-ray absorptiometry (DXA), bioimpedance analysis (BIA), and magnetic resonance imaging (MRI) are either difficult to perform in everyday clinical practice or biased by concurrent clinical confounders. B-mode muscle ultrasound can be helpful in assessing muscle mass and architecture, and thus possibly useful for diagnosing or screening sarcopenia...
February 12, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28198572/comparison-of-the-analgesic-efficacy-of-ultrasound-guided-rectus-sheath-block-and-local-anesthetic-infiltration-for-laparoscopic-percutaneous-extraperitoneal-closure-in-children
#15
Yuka Uchinami, Fumika Sakuraya, Nobuhiro Tanaka, Koji Hoshino, Eri Mikami, Taro Ishikawa, Hitomi Fujii, Takehiko Ishikawa, Yuji Morimoto
BACKGROUND: Ultrasound-guided rectus sheath block and local anesthetic infiltration are the standard options to improve postoperative pain for children undergoing surgery with a midline incision. However, there is no study comparing the effect of ultrasound-guided rectus sheath block with local anesthetic infiltration for children undergoing laparoscopic surgery. AIMS: The aim of this trial was to compare the onset of ultrasound-guided rectus sheath block with that of local anesthetic infiltration for laparoscopic percutaneous extraperitoneal closure in children...
February 15, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28195673/ultrasound-enhanced-sirna-delivery-using-magnetic-nanoparticle-loaded-chitosan-deoxycholic-acid-nanodroplets
#16
Jeong Yu Lee, Calum Crake, Boon Teo, Dario Carugo, Marie de Saint Victor, Anjali Seth, Eleanor Stride
Small interfering RNA (siRNA) has significant therapeutic potential but its clinical translation has been severely inhibited by a lack of effective delivery strategies. Previous work has demonstrated that perfluorocarbon nanodroplets loaded with magnetic nanoparticles can facilitate the intracellular delivery of a conventional chemotherapeutic drug. The aim of this study is to determine whether a similar agent can provide a means of delivering siRNA, enabling efficient transfection without degradation of the molecule...
February 13, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28194660/a-novel-apparatus-for-the-multifaceted-evaluation-of-arterial-function-through-transmural-pressure-manipulation
#17
Toshiyuki Yaguchi, Yalin Cong, Kenji Shimo, Takahiro Kurokawa, Shukei Sugita, Kazuaki Nagayama, Hiroshi Masuda, Takeo Matsumoto
A novel apparatus for the multifaceted evaluation of artery function was developed. It measures endothelial and smooth muscle functions and the pressure-strain elastic modulus (E p). A rigid airtight chamber with an ultrasound probe was attached to the upper arm to manipulate the transmural pressure of the brachial artery. Endothelial function was measured via a standard flow-mediated dilation (FMD) protocol. Smooth muscle function was evaluated via a myogenic contraction of the artery following the application of negative pressure to the chamber and was named pressure-mediated contraction (PMC)...
February 13, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28194274/moderate-to-deep-sedation-technique-using-propofol-and-ketamine-allowing-synchronised-breathing-for-magnetic-resonance-high-intensity-focused-ultrasound-mr-hifu-treatment-for-uterine-fibroids-a-pilot-study
#18
Hermanus H B Vaessen, F M Knuttel, J M M van Breugel, M E Ikink, J M Dieleman, M A A J van den Bosch, J T A Knape
BACKGROUND: Magnetic resonance high-intensity focused ultrasound (MR-HIFU) treatment for uterine fibroids is rapidly gaining popularity as a treatment modality. This procedure is generally uncomfortable, painful, and requires minimal or absence of movement and an MR-HIFU synchronised breathing pattern of the patient. Procedural sedation and analgesia protocols have become the standard practice in interventional radiology departments worldwide. The aim of this study was to explore if a sedation regimen with low-dose propofol and ketamine performed by trained non-medical sedation practitioners could result in relief of discomfort for the patient and in adequate working conditions for MR-HIFU treatment for uterine fibroids...
2017: Journal of Therapeutic Ultrasound
https://www.readbyqxmd.com/read/28184161/low-intensity-focused-ultrasound-lifu-induced-acoustic-droplet-vaporization-in-phase-transition-perfluoropentane-nanodroplets-modified-by-folate-for-ultrasound-molecular-imaging
#19
Jianxin Liu, Tingting Shang, Fengjuan Wang, Yang Cao, Lan Hao, JianLi Ren, Haitao Ran, Zhigang Wang, Pan Li, Zhiyu Du
The commonly used ultrasound (US) molecular probes, such as targeted microbubbles and perfluorocarbon emulsions, present a number of inherent problems including the conflict between US visualization and particle penetration. This study describes the successful fabrication of phase changeable folate-targeted perfluoropentane nanodroplets (termed FA-NDs), a novel US molecular probe for tumor molecular imaging with US. Notably, these FA-NDs can be triggered by low-intensity focused US (LIFU) sonication, providing excellent US enhancement in B-mode and contrast-enhanced US mode in vitro...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28183146/prenatal-and-postnatal-management-of-gastroschisis-in-german-speaking-countries-is-there-a-standardized-management
#20
Katharina Schib, Marc Schumacher, Martin Meuli, Sasha Tharakan, Ulrike Subotic
Introduction Evidence-based guidelines or protocols regarding the perinatal management of babies born with gastroschisis are lacking. The aim of this work is to evaluate the different current treatment modalities for newborns with gastroschisis during the perinatal period in the German-speaking countries Germany, Austria, and Switzerland. These data could serve as a starting point for the development of a multicenter randomized controlled trial. Materials and Methods A questionnaire was developed with 30 questions divided into five sections: (1) prenatal diagnosis, (2) fetal therapy, (3) mode and timing of delivery, (4) operative management, and (5) postoperative management...
February 9, 2017: European Journal of Pediatric Surgery
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