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Focused ultrasonography

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https://www.readbyqxmd.com/read/29319575/duplex-ultrasonography-assisted-freestyle-pedicled-perforator-flaps-for-the-repair-of-myelomeningocele-defects
#1
Atsushi Imaizumi
BACKGROUND: Perforator flaps have unique advantages that may overcome the shortcomings of conventional approaches to myelomeningocele reconstruction. However, identifying and dissecting tiny perforators in neonates is arduous. We have overcome these obstacles with a freestyle flap approach that uses duplex ultrasonography to locate perforator vessels, allowing for limited superficial dissection. This report describes the duplex ultrasonography-assisted freestyle pedicled perforator flap technique for closure of myelomeningocele defects, with long-term clinical outcomes...
January 9, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29313120/significance-of-hyperechoic-marks-observed-during-high-intensity-focused-ultrasound-hifu-ablation-of-benign-thyroid-nodules
#2
Brian H H Lang, Yu-Cho Woo, Keith Wan-Hang Chiu
OBJECTIVE: To examine the association between the appearance of hyperechoic marks (HEMs) during high-intensity focused ultrasound (HIFU) ablation of benign thyroid nodules and nodule shrinkage at 6 months. METHODS: One hundred and thirty-six patients who underwent HIFU for benign thyroid nodule were analysed. An independent person carefully examined the B-mode ultrasonography screen for the appearance of HEMs after each pulse. The proportion of HEMs (%) was calculated by: [(Number of pulses that resulted in HEMs) / (Total number of pulses given per treatment) × 100] while the nodule shrinkage was measured by volume reduction ratio (VRR) = [Baseline volume-volume at 6 months]/[Baseline volume] * 100...
January 8, 2018: European Radiology
https://www.readbyqxmd.com/read/29303209/point-of-care-gastrointestinal-and-urinary-tract-sonography-in-daily-evaluation-of-gastrointestinal-dysfunction-in-critically-ill-patients-guts-protocol
#3
Angel Augusto Perez-Calatayud, Raul Carrillo-Esper, Eduardo Daniel Anica-Malagon, Jesus Carlos Briones-Garduño, Emilio Arch-Tirado, Robert Wise, Manu L N G Malbrain
PURPOSE: There is currently a lack of universally accepted criteria for gastrointestinal (GI) failure or dysfunction in critical care. Also, the clinical assessment of intestinal function is notoriously difficult and thus often goes unrecognized, contributing to poor outcomes. A recent grading system has been proposed to define acute gastrointestinal injury (AGI) in conjunction with other organ function scores (e.g., SOFA). Ultrasonography has become widely accepted as a diagnostic tool for GI problems and pathology...
January 5, 2018: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/29299361/preoperative-accuracy-of-gastric-cancer-staging-in-patient-selection-for-preoperative-therapy-race-may-affect-accuracy-of-endoscopic-ultrasonography
#4
Naruhiko Ikoma, Jeffrey H Lee, Manoop S Bhutani, William A Ross, Brian Weston, Yi-Ju Chiang, Mariela A Blum, Tara Sagebiel, Catherine E Devine, Aurelio Matamoros, Keith Fournier, Paul Mansfield, Jaffer A Ajani, Brian D Badgwell
Background: Over the last 15 years, large randomized controlled studies have validated the benefit of preoperative therapy for patients with resectable gastric cancer. Computed tomography (CT) and endoscopic ultrasonography (EUS) are commonly used to select patients for preoperative treatment, but studies of preoperative staging accuracy that focus on patient selection for preoperative therapy are rare; therefore, whether CT or EUS can reliably identify patients eligible for preoperative therapy is still unclear...
December 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/29290812/circulating-magnetic-microbubbles-for-localized-real-time-control-of-drug-delivery-by-ultrasonography-guided-magnetic-targeting-and-ultrasound
#5
Beata Chertok, Robert Langer
Image-guided and target-selective modulation of drug delivery by external physical triggers at the site of pathology has the potential to enable tailored control of drug targeting. Magnetic microbubbles that are responsive to magnetic and acoustic modulation and visible to ultrasonography have been proposed as a means to realize this drug targeting strategy. To comply with this strategy in vivo, magnetic microbubbles must circulate systemically and evade deposition in pulmonary capillaries, while also preserving magnetic and acoustic activities in circulation over time...
2018: Theranostics
https://www.readbyqxmd.com/read/29277886/the-respiratory-induced-kidney-motion-does-it-really-effect-the-shock-wave-lithotripsy
#6
Mehmet Ozgur Yucel, Serkan Ozcan, Gokhan Tirpan, Murat Bagcioglu, Arif Aydin, Arif Demirbas, Tolga Karakan
PURPOSE: To investigate the effect of respiratory induced kidney mobility on success of shock wave lithotripsy (SWL) with an electrohydraulic lithotripter. MATERIALS AND METHODS: Between May 2013 and April 2015, 158 patients underwent SWL treatment for kidney stones with an electrohydraulic lithotripter. The exclusion criteria were presence of a known metabolic disease (such as cystinuria), non-opaque stones, need for focusing with ultrasonography, abnormal habitus, urinary tract abnormalities, and inability to tolerate SWL until the end of the procedure...
December 25, 2017: Urology Journal
https://www.readbyqxmd.com/read/29210910/five-easy-to-master-uses-for-point-of-care-ultrasound
#7
Fritz Fuller, Francisco Norman
Clinicians are increasingly becoming familiar with the value of limited, focused point-of-care ultrasonography (POCUS) to help answer discrete clinical questions. Ultrasound education is being taught in medical schools and physician assistant (PA) and PA postgraduate programs nationwide. This article introduces five basic POC ultrasound scans that can easily be mastered by practicing PAs.
December 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/29209483/guiding-histological-assessment-of-uterine-lesions-using-3d-in-vitro-ultrasonography-and-stereotaxis
#8
Lieselore Vandermeulen, Ann Cornelis, Christina Kjaergaard Rasmussen, Dirk Timmerman, Thierry Van den Bosch
Objective: To compare ultrasonographic features of uterine lesions with the findings at macroscopy and microscopy. Methods: Case series of ten consecutive women undergoing a hysterectomy for uterine pathology. A preoperative transvaginal ultrasound examination was performed. After hysterectomy, the uterus was re-evaluated by 3D in vitro ultrasonography and in vitro gel instillation sonography (iGIS). The lesion of interest was pinpointed by inserting an intramuscular injection needle using a free-hand 2D-ultrasound guided technique to focus the macroscopic and the microscopic examination by the pathologist...
June 2017: Facts, Views & Vision in ObGyn
https://www.readbyqxmd.com/read/29208870/a-comparative-study-of-magnetic-resonance-imaging-and-transabdominal-ultrasonography-for-the-diagnosis-and-evaluation-of-uterine-fibroids
#9
M Z Hossain, M M Rahman, M M Ullah, M Mukthadira, F A Akter, A B Jahan, F Jahan
Uterine fibroids often cause symptoms of pelvic pain, pressure, and bleeding and a significant cause of morbidity for women of reproductive age. A new, Food and Drug Administration approved noninvasive treatment option is magnetic resonance guided focused ultrasound surgery, which has the potential to become a treatment of choice for selected patients. The purpose of the study was to compare and evaluate the usefulness of MRI and transabdominal ultrasonography for the diagnosis of uterine fibroids. A cross sectional study was carried out in the department of Radiology & Imaging of Mymensingh Medical College Hospital, during the period of January' 2010 to December 2011...
October 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/29203503/multicentre-prospective-randomised-single-blind-controlled-study-protocol-of-the-effect-of-an-additional-parent-administered-sensorimotor-stimulation-on-neurological-development-of-preterm-infants-primebrain
#10
Karine Pelc, Irit Daniel, Bernard Wenderickx, Bernard Dan
INTRODUCTION: Preterm and very low birthweight infants are at increased risk for neurodevelopmental disorders, including cerebral palsy, sensory impairment and intellectual disability. Several early intervention approaches have been designed in the hope of optimising neurological development in this context. It seems important that the intervention takes into account parental mental health, focuses on parent-child interactions and lasts sufficiently long. This study aims to evaluate the effects of a stimulation programme administered by parents until 6 months post-term on motor and neurophysiological development of infants born preterm...
December 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/29191476/the-association-between-serum-uric-acid-and-asymptomatic-intracranial-arterial-stenosis-in-middle-aged-koreans
#11
J K Ahn, J Hwang, J H Hwang, W T Yoon, P W Chung, S Ryu
BACKGROUND AND AIMS: Intracranial arterial stenosis (ICAS) is one of the most common causes of stroke, especially in Asians. Hyperuricemia has been associated with an increased risk of comorbidities such as metabolic syndrome or cardiovascular diseases. However, there are few studies focusing on the association between serum uric acid (SUA) levels and asymptomatic ICAS. The aim of this study was to explore the association between SUA and the prevalence of ICAS in middle-aged Korean health screening examinees...
October 27, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29166762/a-portable-high-intensity-focused-ultrasound-system-for-the-pancreas-with-3d-electronic-steering-a-preclinical-study-in-a-swine-model
#12
Won Chang, Jae Young Lee, Jae Hwan Lee, Jae Seok Bae, Yeon Jin Cho, Kook Jin Kang, Keonho Son, Yul Ri Chung, Kyoung Bun Lee, Joon Koo Han
Purpose: The aim of this animal study was to evaluate the safety and feasibility of a portable, ultrasonography-guided, high-intensity focused ultrasound (USg-HIFU) system to treat the pancreas. Methods: Eight swine were included. Using a portable HIFU device (ALPIUS 900, Alpinion Medical Systems), ablations were performed on the pancreas in vivo. Different acoustic intensities were applied (1.7 kW/cm2 or 1.5 kW/cm2 , n=2 [group A for a pilot study]; 1.5 kW/ cm2 , n=3 [group B]; and 1...
October 13, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29160643/antithrombotic-treatment-in-neonates-and-children
#13
Cornelia H van Ommen
Despite the increasing incidence of venous thromboembolic disease in pediatric patients, it remains a rare complication in childhood. Particularly neonates and adolescents are at risk for development of venous thrombosis. Spontaneous thrombotic events are sporadic, the majority of children have multiple co-existing risk factors, including central venous catheter, asphyxia, congenital heart disease, infection, malignancy, surgery and hypovolemia. Most thrombi are diagnosed by ultrasonography. Recommendations for management of pediatric thrombosis are typically extrapolated from adult studies, despite many differences between adults and children, including developmental hemostasis...
November 21, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/29160427/review-of-magnetic-resonance-guided-focused-ultrasound-in-the-treatment-of-uterine-fibroids
#14
Pedro Felipe Magalhães Peregrino, Marcos de Lorenzo Messina, Ricardo Dos Santos Simões, José Maria Soares-Júnior, Edmund Chada Baracat
Uterine leiomyoma is the most frequently occurring solid pelvic tumor in women during the reproductive period. Magnetic resonance-guided high-intensity focused ultrasound is a promising technique for decreasing menorrhagia and dysmenorrhea in symptomatic women. The aim of this study is to review the role of Magnetic resonance-guided high-intensity focused ultrasound in the treatment of uterine fibroids in symptomatic patients. We performed a review of the MEDLINE and Cochrane databases up to April 2016. The analysis and data collection were performed using the following keywords: Leiomyoma, High-Intensity Focused Ultrasound Ablation, Ultrasonography, Magnetic Resonance Imaging, Menorrhagia...
October 2017: Clinics
https://www.readbyqxmd.com/read/29148427/urothelial-carcinoma-of-the-bladder-in-pediatric-patient-four-case-series-and-review-of-the-literature
#15
Murat Uçar, Metin Demirkaya, Berna Aytaç Vuruşkan, Emin Balkan, Nizamettin Kılıç
BACKGROUND: Urothelial carcinoma (UC) of bladder is a rare condition in children. Majority of the cases are non-invasive and low grade in this age group. However, there is no follow-up protocol defined for this patient group. The objective of this study is to draw attention to childhood bladder tumors and focus on current recommendations for postoperative follow-up together with our experience with four cases. CASE REPORT: A total of 4 cases aged under the age of 18, who were treated in our clinics between 2001 and 2015 with the diagnosis of urothelial carcinoma were retrospectively evaluated...
November 17, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/29121199/the-next-19-years-of-the-american-head-and-neck-society
#16
Jeffrey N Myers
Jeffrey N. Myers, MD, PhD, president of the American Head and Neck Society (AHNS) for 2016 to 2017, offered his perspectives on the AHNS's history, present-day activities, and future plans at this year's annual meeting of the society. The society was created from the 1998 merger of 2 societies, the Society for Head and Neck Surgeons (SHNS), founded in 1954, and the American Society for Head and Neck Surgery (ASHNS), founded in 1959, to become the largest organization in North America for the advancement of research and education in head and neck oncology...
November 9, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29103250/dynamic-ultrasonography-of-the-shoulder
#17
Jina Park, Jee Won Chai, Dong Hyun Kim, Seung Woo Cha
Ultrasonography (US) is a useful diagnostic method that can be easily applied to identify the cause of shoulder pain. Its low cost, excellent diagnostic accuracy, and capability for dynamic evaluation are also advantages. To assess all possible causes of shoulder pain, it is better to follow a standardized protocol and to perform a comprehensive evaluation of the shoulder than to conduct a focused examination. Moreover, a proper dynamic study can enhance the diagnostic quality of US, especially when the pathology is not revealed by a static evaluation...
August 26, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29091482/image-once-print-thrice-three-dimensional-printing-of-replacement-parts
#18
Timothy M Rankin, Blair A Wormer, John D Miller, Nicholas A Giovinco, Salam Al Kassis, David G Armstrong
OBJECTIVE: The last 20 years has seen an exponential increase in 3D printing as it pertains to the medical industry and more specifically surgery. Previous reviews in this domain have chosen to focus on applications within a specific field. To our knowledge none have evaluated the broad applications of patient-specific or Digital Imaging and Communications in Medicine (DICOM) derived applications of this technology. METHODS: We searched PUBMED and CINAHL from April 2012 up to April 2017...
November 1, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29068795/the-role-of-renal-response-to-amino-acid-infusion-and-oral-protein-load-in-normal-kidneys-and-kidney-with-acute-and-chronic-disease
#19
Francis B Gabbai
PURPOSE OF REVIEW: High protein intake and hyperfiltration have been a focus of major interest as potential mechanism(s) of progression of renal disease. This review will examine: the renal response to a protein meal or amino acid infusion and its use to test the renal functional reserve (RFR); new methods to evaluate RFR; the use of RFR in various pathophysiologic conditions. RECENT FINDINGS: The renal response to protein/amino acid infusion involves several mechanisms, including nitric oxide, insulin, glucagon, arginine vasopressin, urea, the renal N-Methyl-D-Aspartate Glutamate receptor and modulation of the activity of the tubuloglomerular feedback system...
January 2018: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29064112/contribution-of-3-dimensional-contrast-enhanced-ultrasonography-ceus-compared-with-2-dimensional-ceus-in-the-analysis-of-liver-tumors
#20
Yi Song, Jingliang Cheng, Ruifang Zhang
OBJECTIVES: In this study, we investigated the vascular characteristics of liver tumors on 3-dimensional (3D) and 2-dimensional (2D) contrast-enhanced ultrasonography (CEUS). The clinical value of these CEUS methods in the diagnosis of benign and malignant liver tumors was evaluated and compared. METHODS: A total of 126 liver tumors were examined by conventional ultrasonography (US), 2D CEUS, and dynamic 3D CEUS (frequency range, 1-6 MHz; focusing ability, 2-25 cm in depth; mechanical index, 0...
October 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
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