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ultrasound effects

Isabel Benavente-Fernandez, Manuel Lubián-Gutierrez, Gema Jimenez-Gomez, Alfonso M Lechuga-Sancho, Simon P Lubián-López
AIM: Post-haemorrhagic ventricular dilatation is monitored by conventional two-dimensional ultrasound. The aims of this study were to determine the volume of the lateral ventricles using three-dimensional ultrasound in preterm infants with post-haemorrhagic ventricular dilatation and evaluate the relationship between volume and linear measurements. METHODS: Serial two-dimensional ultrasounds and three-dimensional ultrasounds were performed on preterm infants with post-haemorrhagic ventricular dilatation admitted to the neonatal intensive care unit at Puerta del Mar Hospital, Cádiz, Spain, from January 2013 to December 2014...
October 26, 2016: Acta Paediatrica
Alessandro Lamorte, Enrico Boero, Paola Crida, Abdul R Conteh, Marco Foletti, Paolo Narcisi
BACKGROUND: Diagnostic tools available in low-income countries are often really basic even if patients can be as sick as those of the richer countries. Point-of-care ultrasound could be a solution for this problem. We studied the impact of ultrasound at the Holy Spirit Hospital, Makeni, Sierra Leone. METHODS: This is a prospective, observational study on outpatients presenting at the HSH. We enrolled continually for 1 month 105 patients asked for ultrasound examination by the caring physician that had to indicate the differential diagnosis hypothesized, the confidence degree about these on a 5-point Likert scale, and the therapy before and after the US...
December 2016: Critical Ultrasound Journal
C M Rosenbaum, O Engel, M Fisch, L A Kluth
Radiation-induced urethral stricture occurs most often due to radiation for prostate cancer. It is one of the most common side effects of radiotherapy. Stricture rates are lowest in patients undergoing external beam radiation therapy, occur more frequently in those who require brachytherapy and show highest stricture rates in patients receiving a combination of external beam radiation and brachytherapy. Strictures are mostly located at the bulbomembranous part of the urethra. Diagnostic work-up should include basic urologic work-up, ultrasound, uroflowmetric assessment, urethroscopy, retrograde urethrogram and voiding cystourethrography...
October 25, 2016: Der Urologe. Ausg. A
Su Niu, Long Cheng, Yan Qiao, Yu-Fei Fu, Chi Cao
PURPOSE: We aimed to determine the clinical effectiveness of combined stent insertion and high-intensity focused ultrasound (HIFU) ablation for patients with malignant obstructive jaundice (MOJ). MATERIALS AND METHODS: From June 2013 to May 2015, consecutive patients with inoperable MOJ underwent biliary stent with or without HIFU ablation in our center. Treatment-related complications, stent patency time, and survival time were compared between 2 groups. RESULTS: During the enrolled time, a total of 51 patients with MOJ underwent biliary stent with HIFU ablation (n=24) or biliary stent only (n=27) in our center...
October 25, 2016: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
Srinivas M Naren Satya, Kamala Retnam Mayilvaganan, V N Amogh, B V Balakrishna, Munnangi Satya Gautam, Ivvala Sai Prathyusha
BACKGROUND: Cysticercosis is a parasitic infection caused by the larval stages of the pork tapeworm, Taenia solium. The subcutaneous form of the disease is a relatively rare clinical entity. Despite its rarity, it is imperative for a radiologist to be aware of this subcutaneous form of the disease and its various radiological patterns while evaluating any subcutaneous swelling. In this paper, we aimed to describe a typical case of 'subcutaneous cysticercosis involving the left anterior chest wall' with high resolution ultrasound findings...
2016: Polish Journal of Radiology
Roberta Cirincione, Federica Maria Di Maggio, Giusi Irma Forte, Luigi Minafra, Valentina Bravatà, Laura Castiglia, Vincenzo Cavalieri, Giovanni Borasi, Giorgio Russo, Domenico Lio, Cristina Messa, Maria Carla Gilardi, Francesco Paolo Cammarata
In recent years, high-intensity focused ultrasound (HIFU) has emerged as a new and promising non-invasive and non-ionizing ablative technique for the treatment of localized solid tumors. Extensive pre-clinical and clinical studies have evidenced that, in addition to direct destruction of the primary tumor, HIFU-thermoablation may elicit long-term systemic host anti-tumor immunity. In particular, an important consequence of HIFU treatment includes the release of tumor-associated antigens (TAAs), the secretion of immuno-suppressing factors by cancer cells and the induction of cytotoxic T lymphocyte (CTL) activity...
October 22, 2016: Ultrasound in Medicine & Biology
Loren Fields, Alison Hathaway
Pregnancy of unknown location (PUL) is a descriptive term for when a woman with a positive pregnancy test has a transvaginal ultrasound that cannot determine the site of the pregnancy. While the majority of women with PUL are subsequently diagnosed with a spontaneous abortion or viable intrauterine pregnancy, 7% to 20% of these women have an ectopic pregnancy. The potential for morbidity and mortality related to an ectopic pregnancy means that considerable care is necessary in the evaluation and management of women with PUL...
October 25, 2016: Journal of Midwifery & Women's Health
Mingchen Ba, Hui Long, Xiangliang Zhang, Yunqiang Tang, Yinbing Wu, Shuai Wang, Zhaofei Yan, Bohuo Zhang, Shuzhong Cui
BACKGROUND: Malignant ascites, a complication often seen in patients with ovarian cancer (OC), is difficult to treat, but hyperthermic intraperitoneal chemotherapy (HIPEC) has a good efficacy. OBJECTIVE: The aim of this study was to assess the efficacy of cytoreductive surgery (CRS) combined with HIPEC for controlling malignant ascites from OC. MATERIALS AND METHODS: From December 2009 until December 2014, 53 patients with OC and malignant ascites were treated with CRS and HIPEC...
November 2016: International Journal of Gynecological Cancer
K M Meiburger, S Y Nam, E Chung, L J Suggs, S Y Emelianov, F Molinari
Blood vessels are the only system to provide nutrients and oxygen to every part of the body. Many diseases can have significant effects on blood vessel formation, so that the vascular network can be a cue to assess malicious tumor and ischemic tissues. Various imaging techniques can visualize blood vessel structure, but their applications are often constrained by either expensive costs, contrast agents, ionizing radiations, or a combination of the above. Photoacoustic imaging combines the high-contrast and spectroscopic-based specificity of optical imaging with the high spatial resolution of ultrasound imaging, and image contrast depends on optical absorption...
November 21, 2016: Physics in Medicine and Biology
Harriet Lea-Banks, Boon Teo, Eleanor Stride, Constantin C Coussios
A significant barrier to successful drug delivery is the limited penetration of nanoscale therapeutics beyond the vasculature. Building on recent in vivo findings in the context of cancer drug delivery, the current study investigates whether modification of nanoparticle drug-carriers to increase their density can be used to enhance their penetration into viscoelastic materials under ultrasound exposure. A computational model is first presented to predict the transport of identically sized nanoparticles of different densities in an ultrasonic field in the presence of an oscillating microbubble, by a combination of primary and secondary acoustic radiation forces, acoustic streaming and microstreaming...
November 21, 2016: Physics in Medicine and Biology
Cosimo De Nunzio, Fabrizio Presicce, Riccardo Lombardo, Simon Carter, Carlo Vicentini, Andrea Tubaro
AIMS: To evaluate the role of Bladder wall thickness (BWT) as a predictor of Detrusor overactivity (DO) in patients with Lower urinary tract symptoms (LUTS)/Benign prostatic enlargement without Bladder Outlet Obstruction. METHODS: From January 1996 to December 2000, each new patient, aged 45 years or older with LUTS, underwent standard diagnostic assessment, urodynamic studies (cystometry and pressure flow studies), and ultrasound measurements of the bladder wall thickness (BWT) in two centers...
October 24, 2016: Neurourology and Urodynamics
Alex Aparecido Cantador, Daniel Emílio Dalledone Siqueira, Octavio Barcellos Jacobsen, Jamal Baracat, Ines Minniti Rodrigues Pereira, Fábio Hüsemann Menezes, Ana Terezinha Guillaumon
OBJECTIVE: To compare duplex ultrasound and computed tomography (CT) angiography in terms of their performance in detecting endoleaks, as well as in determining the diameter of the aneurysm sac, in the postoperative follow-up of endovascular abdominal aortic aneurysm repair. MATERIALS AND METHODS: This was a prospective study involving 30 patients who had undergone endovascular repair of infrarenal aortoiliac aneurysms. Duplex ultrasound and CT angiography were performed simultaneously by independent radiologists...
July 2016: Radiologia Brasileira
Yi Zhang, Chao Yang, Jian-Zhong Zou, Fei Chen, Xia Ou, Hai-Rong Zou, Yan Wang
OBJECTIVE: To compare the effect of low-dose focused ultrasound pre-irradiation and microbubbles for enhancing the ablation effect of high intensity focused ultrasound (HIFU) on VX2 hepatic tumor in rabbits. METHODS: Fifty-five rabbits bearing VX2 hepatic tumor were randomly divided into low-dose pre-irradiation + HIFU ablation group, microbubbles+HIFU ablation group, and HIFU ablation group for corresponding treatments. The pathological changes in the tumors after low-dose irradiation, time for HIFU ablation, tumor volume with coagulative necrosis, energy efficiency factor (EEF), pathological changes in the ablated tumor, and sound channel of HIFU ablation were observed...
October 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
P-A Barral, M Saeed-Kilani, F Tradi, A Dabadie, J Izaaryene, J Soussan, J-M Bartoli, V Vidal
PURPOSE: The purpose of this study was to evaluate the effectiveness of ethylene vinyl alcohol copolymer (Onyx) as a single embolic agent for percutaneous arterial treatment of hemorrhage due to uterine arteriovenous malformations (AVMs). MATERIALS AND METHODS: Twelve women (mean age, 33 years) with metrorrhagia due to uterine AVMs who were treated by percutaneous arterial embolization using Onyx as a single embolic agent were retrospectively included. The diagnosis of uterine AVM was suggested by pelvic ultrasound and/or magnetic resonance imaging findings and further confirmed by angiography...
October 21, 2016: Diagnostic and Interventional Imaging
Erin P Ward, James Wang, Natalie Mendez, Jian Yang, Chris Barback, Jessica Wang-Rodriguez, William Trogler, Andrew C Kummel, Sarah Blair
BACKGROUND: We aimed to evaluate the potential for ultrasound (US) visible biodegradable nanoshells (NS) as an alternative to wire-guided localization for nonpalpable tumors in vivo. METHODS: VX2 tumor was injected in bilateral thighs of 22 New Zealand rabbits and after 5 to 10 days, 1 tumor was marked with a wire as a control and the contralateral tumor was injected with 1 mL of 500 nm gas-filled silica NS under Doppler US. Tumors were excised after 24 hours...
September 30, 2016: American Journal of Surgery
Yücel Korkusuz, Oscar Maximilian Mader, Wolfgang Kromen, Christian Happel, Shadi Ahmad, Daniel Gröner, Mithat Koca, Alexander Mader, Frank Grünwald, Hüdayi Korkusuz
OBJECTIVE: To evaluate if internally cooled microwave ablation (cMWA) is a safe and effective method for treatment of benign and malign thyroid nodules. METHODS: 9 patients with 11 symptomatic cold benign thyroid nodules and 1 recurrent thyroid carcinoma ranging in volume from 9.1 to 197ml (mean size 52± 57ml) were treated with cMWA. The mean age of the patients was 59 years. Pain during the treatment was measured on a 10-point scale. Side effects revealed by ultrasound or patients' complaints were documented...
November 2016: European Journal of Radiology
Susanna Holmlund, Tommi Kauko, Jaakko Matomäki, Miia Tuominen, Juha Mäkinen, Päivi Rautava
BACKGROUND: To date, several studies concerning the effects of induced abortion (IA) on women's later psychosocial well-being and future delivery complications have been published. However, the lack of reports on woman's physical well-being during their first full-term pregnancy occurring after IA is what inspired the current study. Here, we evaluate the physical well-being and use of maternity services of first-time mothers with a history of IA. METHODS: Finnish National Birth Registry data from 2008 to 2010 were linked with the Induced Abortion Registry data from 1983 to 2007...
October 24, 2016: BMC Pregnancy and Childbirth
Po-Hao Chen, Hsien-Yuan Lane, Chieh-Hsin Lin
Neuroleptic malignant syndrome (NMS) is one of the most severe iatrogenic emergencies in clinical service. The symptoms including sudden consciousness change, critical temperature elevation and electrolytes imbalance followed by mutli-organ system failure were common in NMS. In addition to aggressive interventions with intravenous fluid resuscitation and antipyretics, several antidotes have been suggested to prevent further progression of the muscle damage. Dantrolene has been reported to be one of the most effective treatments for NMS...
November 30, 2016: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
Antoun Nader, Mark C Kendall, David W Manning, Matthew Beal, Rohit Rahangdale, Robert Dekker, Gildasio S De Oliveira, Eric Kamenetsky, Robert J McCarthy
BACKGROUND AND OBJECTIVES: A single-dose adductor canal block can provide postoperative analgesia for patients undergoing total knee arthroplasty (TKA). The purpose of this study was to assess postoperative opioid consumption after ultrasound-guided single-injection bupivacaine compared with saline adductor canal block for patients undergoing TKA. METHODS: After institutional review board approval, written informed consent was obtained from patients (>18 years old) undergoing elective TKA...
November 2016: Regional Anesthesia and Pain Medicine
Dan Liu, Qisong Wang, Xin Liu, Ruixin Niu, Yan Zhang, Jinwei Sun
Accurately measuring the oil content and salt content of crude oil is very important for both estimating oil reserves and predicting the lifetime of an oil well. There are some problems with the current methods such as high cost, low precision, and difficulties in operation. To solve these problems, we present a multifunctional sensor, which applies, respectively, conductivity method and ultrasound method to measure the contents of oil, water, and salt. Based on cross sensitivity theory, these two transducers are ideally integrated for simplifying the structure...
October 21, 2016: Sensors
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