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https://www.readbyqxmd.com/read/29781742/early-prenatal-diagnosis-of-blakes-pouch-cyst-by-2d-3d-ultrasound-with-cristal-and-realistic-vue-application
#1
Gabriele Tonni, Gianpaolo Grisolia, Paolo Zampriolo, Edward Araujo Júnior, Rodrigo Ruano
INTRODUCTION: Blake's pouch cyst (BPC) represents an abnormal development of the posterior membranous area of the fetal brain. MATERIAL AND METHODS: Two- and three-dimensional ultrasound with Cristal and Realistic Vue were used to characterized the early prenatal diagnosis. RESULTS: At 9 weeks and 5 days a ballooning in the posterior fossa and resulting in an enlarged intracranial translucency (IT) was detected by 3D ultrasound using Cristal Vue in "inversion" mode and Cristal plus Realistic Vue...
May 21, 2018: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/29781238/improving-haemodialysis-fistula-maturation-following-early-ultrasound-vascular-mapping-the-venous-preservation-scan
#2
Ru Yu Tan, Michelle Manning, Jacqueline Spurway, Thulasi Jegatheesan, Michelle Bertram, Lisa Phipps, Jan Swinnen
AIM: Formation of autogenous arteriovenous fistula (AVF) in patients with chronic kidney disease (CKD) is complicated by a high primary failure rate due to pre-existing vascular damage. We hypothesized that Venous Preservation Scan (VPS) - early (months to years before AVF creation) vascular mapping followed by vasculature preservation is effective in protecting the patient's best "for fistula" vasculature. This study was performed to evaluate the impact of VPS on AVF outcomes...
May 20, 2018: Nephrology
https://www.readbyqxmd.com/read/29779960/comparison-of-hemodialysis-arteriovenous-fistula-blood-flow-rates-measured-by-doppler-ultrasound-and-phase-contrast-magnetic-resonance-imaging
#3
Yong He, Yan-Ting Shiu, Daniel B Pike, Prabir Roy-Chaudhury, Alfred K Cheung, Scott A Berceli
OBJECTIVE: The objective of this study was to compare blood flow rates measured by Doppler ultrasound (DUS) and phase-contrast magnetic resonance imaging (MRI) in patients having a hemodialysis arteriovenous fistula (AVF) and to identify scenarios in which there was significant discordance between these two approaches. METHODS: Blood flow rates in the proximal artery (PA) and draining vein (DV) of newly created upper extremity AVFs were measured and compared using DUS and phase-contrast MRI at 1 day, 6 weeks, and 6 months postoperatively...
May 17, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29779410/personalized-charts-for-the-fetal-corpus-callosum-length
#4
Abraham Tsur, Boaz Weisz, Orgad Rosenblat, Daniel Shai, Estela Derazne, David K Stevenson, Reuven Achiron, Eldad Katorza
OBJECTIVE: To personally customize the antenatal ultrasound charts for the fetal corpus callosum (CC) length. METHODS: A retrospective analysis of fetal neuro-sonography scans. Cases were grouped as normal neuro-sonographic evaluation (normal) or as high risk and suspected brain anomaly (abnormal). The normal group was subcategorized according to Cignini's CC length charts. Data of fetuses with a CC length between the 5th-95th percentile served for creating new charts, describing the ratio of the CC length to the major biometric parameters as a function of gestational age (GA)...
May 20, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29777851/point-of-care-ultrasound-performed-by-a-medical-student-compared-to-physical-examination-by-vascular-surgeons-in-the-detection-of-abdominal-aortic-aneurysms
#5
Trinh Mai, Michael Y Woo, Kim Boles, Prasad Jetty
OBJECTIVE: To determine the test characteristics of point-of-care ultrasonography performed by a medical student versus physical examination by vascular surgeons compared to a gold standard reference scan for the detection of abdominal aortic aneurysms. METHODS: We conducted a prospective, observer-blinded study recruiting patients from an outpatient vascular surgery clinic. Participants were screened for abdominal aortic aneurysms by standardized physical examination by a blinded vascular surgeon, followed by a point-of-care ultrasound examination by a blinded medical student...
May 16, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29775451/-recurrent-urolithiasis-as-a-symptom-of-primary-hyperparathyroidism-in-a-16-year-old-boy
#6
Monika Wojciechowska, Beata Bieniaś, Aleksandra Sobieszczańska-Droździel, Anna Wieczorkiewicz-Płaza, Iwona Beń-Skowronek, Przemysław Sikora
Primary hyperparathyroidism is one of the most common endocrine diseases, however, it is rare in children. In most cases, it is caused by adenoma of these organs. Its most common complications include urolithiasis, nephrocalcinosis and osteoporosis. CASE REPORT: A 16-year-old patient was admitted to our Clinic because of his first-ever renal colic. The ultrasound examination revealed rightsided hydronephrosis caused by the presence of 9 mm stone in the upper part of the right ureter. In addition, the presence of 8 mm stone in the middle calyx of the left kidney was found...
April 23, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29774966/test-characteristics-of-point-of-care-ultrasound-for-the-diagnosis-of-retinal-detachment-in-the-emergency-department
#7
Daniel J Kim, Mario Francispragasam, Gavin Docherty, Byron Silver, Ross Prager, Donna Lee, David Maberley
Previous studies of point of care ultrasound (POCUS) have reported high sensitivities and specificities for retinal detachment (RD). Our primary objective was to assess the test characteristics of POCUS performed by a large heterogeneous group of emergency physicians (EPs) for the diagnosis of RD. METHODS: This was a prospective diagnostic test assessment of POCUS performed by EPs with varying ultrasound experience on a convenience sample of emergency department (ED) patients presenting with flashes or floaters in one or both eyes...
May 18, 2018: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29774459/possible-role-of-standardized-echography-complementing-ultrasound-biomicroscopy-in-tumors-of-the-anterior-eye-segment-a-study-in-a-series-of-13-patients
#8
B Kuzmanović Elabjer, M Bušić, D Miletić, M Bjeloš, N Vukojević, D Bosnar
PURPOSE: To evaluate the efficacy of standardized A-scan echography (ASE) complementing ultrasound biomicroscopy (UBM) to propose the most efficient method as grounds for the diagnosis, treatment, and follow-up of anterior eye-segment tumors. METHODS: The inclusion criteria were tumors of the ciliary body and peripheral choroidal tumors, whose anterior border could not be visualized with a 10 MHz ultrasound probe. The largest basal dimension and the highest prominence of the tumor were measured with a UBM Lin 50 probe...
May 17, 2018: Journal of Ultrasound
https://www.readbyqxmd.com/read/29770262/cross-sectional-imaging-of-parotid-gland-nodules-a-brief-practical-guide
#9
REVIEW
Giuseppe Cicero, Tommaso D'angelo, Sergio Racchiusa, Ignazio Salamone, Carmela Visalli, Antonio Bottari, Alfredo Blandino, Silvio Mazziotti
Clinical evaluation and ultrasound examination are the first steps in the evaluation of a patient with a swelling of the parotid region. After the detection of a nodular lesion, cytological or histological confirmation is usually performed to achieve the diagnosis, while the choice of cross-sectional imaging (computed tomography scan and magnetic resonance imaging) may significantly vary from one physician to another, on the basis of the degree of confidence that both radiologist and surgeon have with this kind of imaging...
2018: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/29769153/point-of-care-ultrasound-to-diagnose-appendicitis-in-a-canadian-emergency-department
#10
Sameer Sharif, Steven Skitch, Dean Vlahaki, Andrew Healey
OBJECTIVES: Appendicitis is a common surgical condition that frequently requires diagnostic imaging. Abdominal computed tomography (CT) is the gold standard for diagnosing appendicitis. Ultrasound offers a radiation-free modality; however, its availability outside business hours is limited in many emergency departments (EDs). The purpose of this study is to evaluate the test characteristics of emergency physician-performed point-of-care ultrasound (POCUS) to diagnose appendicitis in a Canadian ED...
May 17, 2018: CJEM
https://www.readbyqxmd.com/read/29768415/automated-and-real-time-segmentation-of-suspicious-breast-masses-using-convolutional-neural-network
#11
Viksit Kumar, Jeremy M Webb, Adriana Gregory, Max Denis, Duane D Meixner, Mahdi Bayat, Dana H Whaley, Mostafa Fatemi, Azra Alizad
In this work, a computer-aided tool for detection was developed to segment breast masses from clinical ultrasound (US) scans. The underlying Multi U-net algorithm is based on convolutional neural networks. Under the Mayo Clinic Institutional Review Board protocol, a prospective study of the automatic segmentation of suspicious breast masses was performed. The cohort consisted of 258 female patients who were clinically identified with suspicious breast masses and underwent clinical US scan and breast biopsy...
2018: PloS One
https://www.readbyqxmd.com/read/29767632/reply-to-comment-on-invasive-and-noninvasive-means-of-measuring-intracranial-pressure-a-review
#12
Xuan Zhang, Joshua E Medow, Bermans J Iskandar, Fa Wang, Mehdi Shokoueinejad, Joyce Koueik, John G Webster
In their comments, Drs. De Bernardo and Rosa stated that our paper was missing several references
 related to optic nerve sheath diameter ONSD assessments. Specifically, they state that we neglected to
 mention that ultrasound has been used since the 1970s, that we did not emphasize the role of
 Standardized A scans, and they reference some of their publications in which they emphasize the
 importance of these scans in diagnosing optic nerve lesions and benign intracranial hypertension...
May 16, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/29766302/technique-safety-and-feasibility-of-eus-guided-radiofrequency-ablation-in-unresectable-pancreatic-cancer
#13
Filippo Scopelliti, Antonio Pea, Rita Conigliaro, Giovanni Butturini, Isabella Frigerio, Paolo Regi, Alessandro Giardino, Helga Bertani, Marina Paini, Paolo Pederzoli, Roberto Girelli
BACKGROUND AND AIMS: Radiofrequency ablation (RFA) is a well-recognized local ablative technique applied in the treatment of different solid tumors. Intraoperative RFA has been used for non-metastatic unresectable pancreatic ductal adenocarcinoma (PDAC), showing increased overall survival in retrospective studies. A novel RFA probe has recently been developed, allowing RFA under endoscopic ultrasound (EUS) guidance. Aim of the present study was to assess the feasibility and safety of EUS-guided RFA for unresectable PDACs...
May 15, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29765903/effect-of-ultrasonic-agitation-on-push-out-bond-strength-and-adaptation-of-root-end-filling-materials
#14
Murilo Priori Alcalde, Rodrigo Ricci Vivan, Marina Angélica Marciano, Jussaro Alves Duque, Samuel Lucas Fernandes, Mariana Bailo Rosseto, Marco Antonio Hungaro Duarte
Objectives: This study evaluated the effect of ultrasonic agitation of mineral trioxide aggregate (MTA), calcium silicate-based cement (CSC), and Sealer 26 (S26) on adaptation at the cement/dentin interface and push-out bond strength. Materials and Methods: Sixty maxillary canines were divided into 6 groups ( n = 10): MTA, S26, and CSC, with or without ultrasonic activation (US). After obturation, the apical portions of the teeth were sectioned, and retrograde cavities were prepared and filled with cement by hand condensation...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29764509/ultrasound-guided-fine-needle-aspiration-of-retropharyngeal-lymph-nodes-after-radiotherapy-for-nasopharyngeal-carcinoma-a-novel-technique-for-accurate-diagnosis
#15
Long-Jun He, Chuanbo Xie, Yin Li, Lin-Na Luo, Ke Pan, Xiao-Yan Gao, Li-Zhi Liu, Jian-Ming Gao, Guang-Yu Luo, Hong-Bo Shan, Ming-Yuan Chen, Chong Zhao, Wei-Jun Fan, Ping Yang, Guo-Liang Xu, Jian-Jun Li
BACKGROUND: Enlarged retropharyngeal lymph nodes (RLNs) are very common in patients with nasopharyngeal carcinoma (NPC) undergoing radiotherapy. The most suitable treatment option for enlarged RLNs depends on the pathological results. However, RLN sampling is difficult and imminent in the clinic setting. We recently developed a novel minimally invasive technique termed endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) for sampling RLN tissues sufficient for pathological or cytological diagnosis...
May 9, 2018: Cancer communications
https://www.readbyqxmd.com/read/29761687/emergency-extracorporeal-shockwave-lithotripsy-eswl-as-opposed-to-delayed-swl-dswl-for-the-treatment-of-acute-renal-colic-due-to-obstructive-ureteral-stone-a-prospective-randomized-trial
#16
Stefano Bucci, Paolo Umari, Michele Rizzo, Nicola Pavan, Giovanni Liguori, Fabio Barbone, Carlo Trombetta
BACKGROUND: To assess the efficacy of emergency extracorporeal shockwave lithotripsy (eSWL) as first-line treatment in patients with acute colic due to obstructive ureteral stone. METHODS: 74 patients were randomized to emergency SWL within 12 hours (eSWL group) and deferred SWL later than 3 days (dSWL group). Follow-up included ultrasound, KUB (Kidney-Ureter-Bladder) radiography and CT (computed tomography) scan at 24 hours, 7 days, 1 and 3 months from the treatment...
May 14, 2018: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/29760840/clinical-ultrasound-is-safe-and-highly-specific-for-acute-appendicitis-in-moderate-to-high-pre-test-probability-patients
#17
Daniel Corson-Knowles, Frances M Russell
Introduction: Clinical ultrasound (CUS) is highly specific for the diagnosis of acute appendicitis but is operator-dependent. The goal of this study was to determine if a heterogeneous group of emergency physicians (EP) could diagnose acute appendicitis on CUS in patients with a moderate to high pre-test probability. Methods: This was a prospective, observational study of a convenience sample of adult and pediatric patients with suspected appendicitis. Sonographers received a structured, 20-minute CUS training on appendicitis prior to patient enrollment...
May 2018: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29757474/automated-patient-specific-transperineal-ultrasound-probe-setups-for-prostate-cancer-patients-undergoing-radiotherapy
#18
Saskia Maria Camps, Frank Verhaegen, Ben G L Vanneste, Peter H N de With, Davide Fontanarosa
PURPOSE: The use of ultrasound imaging is not widespread in prostate cancer radiotherapy workflows, despite several advantages (e.g. allowing real-time volumetric organ tracking). This can be partially attributed to the need for a trained operator during acquisition and interpretation of the images. We introduce and evaluate an algorithm that can propose a patient-specific transperineal ultrasound probe setup, based on a CT scan and anatomical structure delineations. The use of this setup during the simulation and treatment stage could improve usability of ultrasound imaging for relatively untrained operators (radiotherapists with less than one year experience with ultrasound)...
May 14, 2018: Medical Physics
https://www.readbyqxmd.com/read/29757464/ultrasonography-for-non-invasive-and-real-time-evaluation-of-peri-implant-tissue-dimensions
#19
Hsun-Liang Chan, Khaled Sinjab, Junying Li, Zhaozhao Chen, Hom-Lay Wang, Oliver D Kripfgans
AIM: Existing methods for evaluating marginal bone loss and tissue biotype around dental implants present with many limitations. The aim of this study was to examine the accuracy of high-resolution, 3-dimensional ultrasound to measure peri-implant tissue dimensions. MATERIAL AND METHODS: A 25-MHz ultrasound probe prototype was used to scan peri-implant tissues of 17 implants from 7 fresh human cadavers. Four ultrasonic measurements were made: the marginal bone level/thickness, and mucosal level/thickness...
May 14, 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29755937/rapid-scanning-wide-field-clutter-elimination-in-epi-optoacoustic-imaging-using-comb-lovit
#20
Tigran Petrosyan, Maria Theodorou, Jeff Bamber, Martin Frenz, Michael Jaeger
Epi-style optoacoustic (OA) imaging provides flexibility by integrating the irradiation optics and ultrasound receiver, yet clutter generated by optical absorption near the probe obscures deep OA sources. Localised vibration tagging (LOVIT) retrieves OA signal from images that are acquired with and without a preceding ultrasonic pushing beam: Radiation force leads to a phase shift of signals coming from the focal area resulting in their visibility in a difference image, whereas clutter from outside the pushing beam is eliminated...
June 2018: Photoacoustics
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