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Ultrasound,vascular,color doppler

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https://www.readbyqxmd.com/read/27925701/effect-of-precompression-on-the-power-doppler-assessment-of-breast-lesion-vascularity
#1
Robert DeVita, Richard G Barr
OBJECTIVES: To evaluate the effect of precompression on power Doppler visualization of blood flow in breast masses. METHODS: This Institutional Review Board-approved and Health Insurance Portability and Accountability Act-compliant study evaluated 30 patients with breast masses (16 benign and 14 malignant) undergoing ultrasound-guided breast biopsy. A computational mathematics program was used to calculate the number of color pixels in a region of interest at various degrees of compression of the breast by the transducer...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925648/sonographic-evaluation-of-intrathyroid-metastases
#2
J Matthew Debnam, Michael Kwon, Bruno D Fornage, Savitri Krishnamurthy, Gary L Clayman, Beth S Edeiken-Monroe
OBJECTIVES: Intrathyroid metastases from extrathyroid primary tumors are rare. Clinical findings may be subtle, but detection of intrathyroid metastases has improved with sonography. The objective of this study was to evaluate the sonographic appearance of intrathyroid metastases. METHODS: Patients with thyroid masses with cytopathologic features matching those of an extrathyroid primary tumor were retrospectively identified. The appearances of intrathyroid metastases on sonography were reviewed for the following features: size, margin regularity, echogenicity, echotexture, vascularity on power or color Doppler ultrasonography, and the presence or absence of any associated cervical adenopathy...
December 7, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925468/the-prediction-of-radiofrequency-ablation-zone-volume-using-vascular-indices-of-3-dimensional-volumetric-color-doppler-ultrasound-in-an-in-vitro-blood-perfused-bovine-liver-model
#3
Samuel Chang, Anthony C Lanctot, Martin D McCarter, Katherine M Roberts, Deborah H Glueck, Gerald D Dodd
OBJECTIVE: To determine the most reliable predictor of radiofrequency (RF) ablation zone volume among 3D volumetric color Doppler vascular indices in in-vitro blood-perfused bovine liver model. METHODS: 3D color Doppler volume data of the local hepatic parenchyma were acquired from 37 areas of 13 bovine livers connected to in-vitro oxygenated blood perfusion system. Doppler vascular indices of vascularization index (VI), flow index (FI), and vascularization-flow index (VFI) were obtained from the volume data using a 3D volume analysis software...
December 7, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27846752/chronic-cerebrospinal-venous-insufficiency-as-a-cause-of-inner-ear-diseases
#4
Giuseppe Attanasio, Laura Cagnoni, Eleonora Masci, Francesco Ciciarello, Francesco Diaferia, Aldo Bruno, Antonio Greco, Marco De Vincentiis
CONCLUSION: The present study confirms a correlation between chronic cerebrospinal venous insufficiency (CCSVI) diagnosis and Ménière's disease (MD). CCSVI could be considered a new ultrasound vascular pattern of the cerebrospinal venous system in patients affected by definite MD. Conversely, the present results showed that CCSVI cannot be considered a pathogenic mechanism for idiopathic sudden sensorineural hearing loss (ISSNHL). OBJECTIVES: The aim of this study is to investigate the correlation between CCSVI and MD and to evaluate if CCSVI can be considered a risk factor also for ISSNHL...
November 16, 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27823894/color-flow-doppler-point-of-care-ultrasound-to-evaluate-vessels-before-infant-lumbar-puncture
#5
Brunhild M Halm, David O Kessler
BACKGROUND: Infant lumbar punctures (LPs) are common procedures performed in the emergency department. However, 10% to 35% of these LPs are unsuccessful or grossly bloody, which can lead to increased hospitalization, increased costs, and prolonged exposure to antibiotics or antivirals. Point of care ultrasound (POCUS) may help to surmount the intrinsic causes of LP failure by providing a visual guide of the vascular structures in the needle path before a LP is performed. CASE REPORT: We report two cases where color flow Doppler POCUS was used to identify vascular structures around the spinal canal in infants before attempting a LP...
November 4, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27794132/value-of-ultrasound-elastography-in-the-differential-diagnosis-of-cervical-lymph-nodes-a-comparative-study-with-b-mode-and-color-doppler-sonography
#6
Leyla Acu, Suna Özhan Oktar, Rusen Acu, Cem Yücel, Süleyman Cebeci
OBJECTIVES: The purpose of this study was to determine the usefulness of ultrasound elastography in the evaluation of enlarged cervical lymph nodes in comparison with B-mode and color Doppler sonography. METHODS: A total of 220 lymph nodes in 168 consecutive patients who were referred for sonography of the neck were included in this study. B-mode sonograms were evaluated according to short-axis diameter, long-to-short-axis ratio, hilum, echogenicity, and microcalcification...
November 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27753108/solitary-fibrous-tumor-of-the-breast-a-case-report-and-review-of-the-literature
#7
Shu-Ya Tsai, Chih-Yi Hsu, Yi-Hong Chou, Yi-Chen Lai, Yung-Hui Lin, Hsin-Kai Wang, Hong-Jen Chiou, Jane Wang, Chui-Mei Tiu
Solitary fibrous tumor (SFT) is an uncommon neoplasm of mesenchymal origin, which can be benign or malignant. Most SFTs develop from the pleura, but they can also be found in other sites. There are only few reports of SFT occurring in the breast. We herein report such a rare case. Sonography demonstrated an ovoid lesion mimicking a fibroadenoma, whereas color Doppler imaging showed marked internal vascularity. A brief literature review on imaging features of SFTs is added. © 2016 Wiley Periodicals, Inc. J Clin Ultrasound, 2016...
October 18, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27752308/characterization-of-blood-flow-and-the-effects-of-exogenous-estradiol-benzoate-on-residual-follicles-formed-after-ultrasound-guided-transvaginal-follicle-aspiration-in-cattle
#8
Alberto Mansur Ghetti, Luiz Gustavo Bruno Siqueira, Eduardo Kenji Nunes Arashiro, Miller Pereira Palhao, Felipe Zandonadi Brandao, Joao Henrique Moreira Viana
BACKGROUND: Removal of the follicular content by ultrasound-guided transvaginal follicle aspiration (TVFA) may fail to induce immediate atresia and loss of function, resulting in the occurrence of residual follicles (RF). The aims of this study were to characterize the blood flow in RF and to determine the effects of the treatment with estradiol benzoate on RF fate. Lactating, cyclic Holstein-Gir crossbred cows were used. In Experiment 1, follicular wave emergence (D0) was synchronized in cows (n = 10) and follicular growth was then monitored by transrectal ultrasonography from D0 to D8, followed by TVFA of the largest follicle present on the ovaries 24 h later...
2016: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/27713067/clinical-experience-with-intraoperative-ultrasound-image-in-microsurgical-resection-of-cerebral-arteriovenous-malformations
#9
Hongzhi Xu, Zhiyong Qin, Ming Xu, Chunjui Chen, Junjie Zhang, Xiancheng Chen
BACKGROUND: Intraoperative ultrasound is widely used in neurosurgery for the management of intracerebral hematoma and brain tumor. However, the clinical value of this method in the surgery of cerebral arteriovenous malformations (AVMs) has not been reported. In this study, the application of intraoperative ultrasound for AVMs surgery was evaluated prospectively. METHODS: This prospective clinical study comprised of 41 patients who underwent microsurgical resection of cerebral AVMs at our institute...
October 3, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27709473/multiparametric-ultrasonography-and-ultrasound-elastography-in-the-differentiation-of-parathyroid-lesions-from-ectopic-thyroid-lesions-or-lymphadenopathies
#10
Andrea M Isidori, Vito Cantisani, Elisa Giannetta, Daniele Diacinti, Emanuele David, Valerio Forte, Daniela Elia, Corrado De Vito, Emilia Sbardella, Daniele Gianfrilli, Francesco Monteleone, Jessica Pepe, Salvatore Minisola, Giorgio Ascenti, Vito D'Andrea, Carlo Catalano, Ferdinando D'Ambrosio
To evaluate the accuracy of ultrasound elastography with Elastoscan(TM) Core Index in the differential diagnosis of parathyroid lesions from ectopic thyroid nodules and lymph nodes. Seventy nine patients with repeatedly high levels of circulating intact parathyroid hormone, normal vitamin D and renal function tests, with an ultrasound scan showing a neck lesion, sharply demarcated from the thyroid lobules, were consecutively enrolled. Ultrasound with and without Color Doppler and ultrasound elastography were performed before histological examination...
October 5, 2016: Endocrine
https://www.readbyqxmd.com/read/27692844/cardiometabolic-risk-and-female-sexuality-focus-on-clitoral-vascular-resistance
#11
Elisa Maseroli, Egidia Fanni, Sarah Cipriani, Irene Scavello, Francesca Pampaloni, Cesare Battaglia, Massimiliano Fambrini, Edoardo Mannucci, Emmanuele A Jannini, Mario Maggi, Linda Vignozzi
INTRODUCTION: The relation between sexual and cardiovascular health in women is not well defined. Clitoral color Doppler ultrasound (CDU) with assessment of the pulsatility index (PI), reflecting resistance to blood flow, has been proposed as an objective measurement of sexual functioning. AIM: To investigate associations between clitoral PI and cardiometabolic risk factors, sexual and intrapsychic parameters, and self-perception of body image. METHODS: Seventy-one adult heterosexual women in a stable relationship attending our clinic for sexual dysfunction were consecutively recruited...
November 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27689451/delivery-of-bevacizumab-to-atheromatous-porcine-carotid-tissue-using-echogenic-liposomes
#12
J T Sutton, K J Haworth, S K Shanmukhappa, M R Moody, M E Klegerman, J K Griffin, D M Patton, D D McPherson, C K Holland
Ultrasound is both a valuable diagnostic tool and a promoter of beneficial tissue bioeffects for the treatment of cardiovascular disease. Vascular effects can be mediated by mechanical oscillations of circulating microbubbles that may also encapsulate and shield therapeutic agents in the bloodstream. Here, the effect of color-Doppler ultrasound exposure on bevacizumab-loaded liposome delivery into the vascular bed was assessed in atheromatous porcine carotids. Bevacizumab, an anti-angiogenic antibody to vascular endothelial growth factor (VEGF-A), was loaded into echogenic liposomes (BEV-ELIP) and confirmed to be immunoreactive...
November 2016: Drug Delivery
https://www.readbyqxmd.com/read/27669962/diagnostic-vascular-ultrasonography-with-the-help-of-color-doppler-and-contrast-enhanced-ultrasonography
#13
REVIEW
Johannes Rübenthaler, Maximilian Reiser, Dirk-André Clevert
The use of ultrasonography and especially of contrast-enhanced ultrasonography (CEUS) in the diagnosis of vascular pathologies before and after interventions has significantly increased over the past years due to the broader availability of modern ultrasound systems with CEUS capabilities and more trained user experience in this imaging modality. For the preinterventional and postinterventional work-up of carotid diseases, duplex ultrasound as well as CEUS have been established as the standard-of-care examination procedures for diagnosis, evaluation, and follow-up...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27661402/placental-implantation-abnormalities-a-modern-approach
#14
Sevan A Vahanian, Anthony M Vintzileos
PURPOSE OF REVIEW: Placental implantation abnormalities (PIAs) comprise a large group of disorders associated with significant maternal, fetal, and neonatal morbidity. RECENT FINDINGS: Risk factors include prior uterine surgery/myometrial scarring and the presence of placenta previa with or without prior cesarean delivery. Newly identified risk factors include previous prelabor cesarean delivery and previous postpartum hemorrhage. PIAs contribute substantially to preterm birth with prematurity rates ranging from 38 to 82%...
December 2016: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27639624/long-term-performance-evaluation-of-small-diameter-vascular-grafts-based-on-polyvinyl-alcohol-hydrogel-and-dextran-and-mscs-based-therapies-using-the-ovine-pre-clinical-animal-model
#15
Nuno Alexandre, Irina Amorim, Ana Rita Caseiro, Tiago Pereira, Rui Alvites, Alexandra Rêma, Ana Gonçalves, Guilherme Valadares, Elísio Costa, Alice Santos-Silva, Miguel Rodrigues, Maria Ascensão Lopes, André Almeida, José Domingos Santos, Ana Colette Maurício, Ana Lúcia Luís
The functional and structural performance of a 5cm synthetic small diameter vascular graft (SDVG) produced by the copolymerization of polyvinyl alcohol hydrogel with low molecular weight dextran (PVA/Dx graft) associated to mesenchymal stem cells (MSCs)-based therapies and anticoagulant treatment with heparin, clopidogrel and warfarin was tested using the ovine model during the healing period of 24 weeks. The results were compared to the ones obtained with standard expanded polyetetrafluoroethylene grafts (ePTFE graft)...
September 14, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27622988/magnetic-nanoparticle-mediated-targeting-of-cell-therapy-reduces-in-stent-stenosis-in-injured-arteries
#16
Boris Polyak, Mikhail Medved, Nina Lazareva, Lindsay Steele, Tirth Patel, Ahmad Rai, Menahem Y Rotenberg, Kimberly Wasko, Andrew R Kohut, Richard Sensenig, Gary Friedman
Although drug-eluting stents have dramatically reduced the recurrence of restenosis after vascular interventions, the non-selective anti-proliferative drugs released from these devices significantly delay reendothelialization and vascular healing, increasing the risk of short- and long-term stent failure. Efficient repopulation of endothelial cells in the vessel wall following injury may limit complications, such as thrombosis, neoatherosclerosis, and restenosis, through reconstitution of a luminal barrier and cellular secretion of paracrine factors...
September 13, 2016: ACS Nano
https://www.readbyqxmd.com/read/27556192/sonographic-features-of-nodular-hashimoto-thyroiditis
#17
Daniel Corey Oppenheimer, Ellen Giampoli, Simone Montoya, Swapnil Patel, Vikram Dogra
OBJECTIVE: The aim of the study was to analyze the sonographic features of nodular Hashimoto thyroiditis (HT) in patients with diffuse background thyroiditis and normal background thyroid parenchyma. SUBJECTS AND METHODS: Eighty-six patients who had fine-needle aspiration biopsy of 100 thyroid nodules confirmed to be HT and a thyroid ultrasound within 1 year of the biopsy were included in the study. Retrospective analysis of several sonographic features of each nodule was then performed...
September 2016: Ultrasound Quarterly
https://www.readbyqxmd.com/read/27551336/abdominal-ultrasonography-of-the-pediatric-gastrointestinal-tract
#18
REVIEW
Heather I Gale, Michael S Gee, Sjirk J Westra, Katherine Nimkin
Ultrasound is an invaluable imaging modality in the evaluation of pediatric gastrointestinal pathology; it can provide real-time evaluation of the bowel without the need for sedation or intravenous contrast. Recent improvements in ultrasound technique can be utilized to improve detection of bowel pathology in children: Higher resolution probes, color Doppler, harmonic and panoramic imaging are excellent tools in this setting. Graded compression and cine clips provide dynamic information and oral and intravenous contrast agents aid in detection of bowel wall pathology...
July 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/27492569/predicting-malignant-neck-lymphadenopathy-using-color-duplex-sonography-based-on-multivariate-analysis
#19
Maria C Chammas, Túlio A A Macedo, Victor W Lo, Andrea C Gomes, Adriana Juliano, Giovanni G Cerri
PURPOSE: To select the best predictors of cervical lymph node malignancy based on gray-scale and power Doppler sonography using multivariate analysis. METHODS: We evaluated sonographically a total of 97 lymph nodes in the neck that were subjected to fine-needle aspiration biopsy. The gray-scale and power Doppler sonography parameters that we analyzed using multivariate logistic regression included size, shape, echogenicity, echotexture, margins, hilum, presence of microcalcifications or necrosis, vascularization, and resistance index (RI)...
November 12, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27470250/echo-color-doppler-ultrasound-a-valuable-diagnostic-tool-in-the-assessment-of-arteriovenous-fistula-in-hemodialysis-patients
#20
Anna Mudoni, Francesco Caccetta, Maurizio Caroppo, Fernando Musio, Antonella Accogli, Maria Dolores Zacheo, Maria Domenica Burzo, Maurizio Gallieni, Vitale Nuzzo
A functioning vascular access is a critical requirement to improve the quality of life in hemodialysis patients, so monitoring and surveillance of vascular access play key roles in identifying all dysfunctions and reducing the huge economic cost as well as adequacy of dialysis.In our five-year experience, a study protocol has been used and improved with the help of ultrasonography.Doppler ultrasound is an excellent and sensitive modality for hemodialysis access evaluation, one of techniques employed for arteriovenous fistulae (AVF) study, not only as a preoperative tool, but also in post-operative monitoring of AVF maturation...
September 21, 2016: Journal of Vascular Access
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