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Accuracy of Real-Time Single- and Multi-Beat 3-D Speckle Tracking Echocardiography In Vitro
Abstract: With little data published on the accuracy of cardiac 3-D strain measurements, we investigated the agreement between 3-D echocardiography and sonomicrometry in an in vitro model with a polyvinyl alcohol phantom. A cardiac scanner with a 3-D probe was used to acquire recordings at 15 different stroke volumes at a heart rate of 60 beats/min, and eight different stroke volumes at a heart rate of 120 beats/min. Sonomicrometry was used as a reference, monitoring longitudinal, circumferential and radial lengths. Both single- and multi-beat acquisitions were recorded. Strain values were compared with sonomicrometer str...
Source: Ultrasound in Medicine and Biology - April 5, 2013 Category: Radiology Authors: Johannes Just Hjertaas, Henrik Fosså, Grete Lunestad Dybdahl, Renate Grüner, Per Lunde, Knut Matre Tags: Original Contributions Source Type: research

Hypertrophic Cardiomyopathy Present and Future, With Translation Into Contemporary Cardiovascular Medicine
Hypertrophic cardiomyopathy (HCM) is a common inherited heart disease with diverse phenotypic and genetic expression, clinical presentation, and natural history. HCM has been recognized for 55 years, but recently substantial advances in diagnosis and treatment options have evolved, as well as increased recognition of the disease in clinical practice. Nevertheless, most genetically and clinically affected individuals probably remain undiagnosed, largely free from disease-related complications, although HCM may progress along 1 or more of its major disease pathways (i.e., arrhythmic sudden death risk; progressive heart failu...
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - July 3, 2014 Category: Radiology Source Type: research

Cardiac remodelling identified by cardiovascular magnetic resonance in patients with hepatitis C infection and liver disease
Abstract Chronic cardiac dysfunction in patients with chronic liver disease (CLD) in the absence of alcohol consumption or other cardiac disease is well described. Whilst functional and morphological features of this condition remain unclear, diastolic dysfunction has been implicated by echocardiography. We aimed to evaluate myocardial structure, function and tissue composition with cardiac magnetic resonance (CMR) imaging in patients with hepatitis C and histological evidence of liver disease on biopsy. Contrast-enhanced CMR imaging for morphological, functional and tissue characterization was performed on 16 pat...
Source: The International Journal of Cardiovascular Imaging - December 15, 2015 Category: Radiology Source Type: research

Causes of changes in carotid intima-media thickness: a literature review
Atherosclerosis causes significant morbidity and mortality. Carotid intima-media thickness (CIMT) predicts future cardiovascular and ischaemic stroke incidence. CIMT, a measure of atherosclerotic disease, can be reliably determined in vivo by carotid ultrasound. In this review, we determined that CIMT is associated with traditional cardiovascular risk factors such as age, sex, race, smoking, alcohol consumption, habitual endurance exercise, blood pressure, dyslipidemia, dietary patterns, risk-lowering drug therapy, glycemia, hyperuricemia, obesity-related anthropometric parameters, obesity and obesity-related diseases. We ...
Source: Cardiovascular Ultrasound - December 15, 2015 Category: Radiology Authors: Baoge QuTao Qu Source Type: research

Optimal Acquisition Settings for Speckle Tracking Echocardiography–Derived Strains in Infants: An In Vitro Study
The purpose of this study was to investigate the effect of frame rate and probe frequency on the accuracy of speckle tracking echocardiography–derived strain measurements in infants. An infant-sized left ventricle phantom with sonomicrometer crystals was made from polyvinyl alcohol. The examined stroke rates were 60, 120 and 180 strokes per min (SPM). Longitudinal strain and circumferential strain measurements were analyzed from a total of 1860 cine loops. These cine loops were acquired using two pediatric probes of different frequencies at both fundamental and harmonic imaging modes.
Source: Ultrasound in Medicine and Biology - April 12, 2016 Category: Radiology Authors: Umael Khan, Johannes Just Hjertaas, Gottfried Greve, Knut Matre Tags: Original Contribution Source Type: research

Transarterial venous sinus occlusion of dural arteriovenous fistulas using ONYX.
CONCLUSION: Transarterial closure of the transverse and sigmoid sinuses. PMID: 27530138 [PubMed - as supplied by publisher]
Source: Interventional Neuroradiology - August 19, 2016 Category: Radiology Tags: Interv Neuroradiol Source Type: research

Neurologic emergencies in HIV-negative immunosuppressed patients.
This article reviews the role of neuroimaging in HIV-negative immunodepressed patients with a neurologic complication that requires urgent management. PMID: 28012729 [PubMed - as supplied by publisher]
Source: Radiologia - December 20, 2016 Category: Radiology Authors: Guzmán-De-Villoria JA, Fernández-García P, Borrego-Ruiz PJ Tags: Radiologia Source Type: research

Embolization for the treatment of intractable epistaxis: 12 month outcomes in a two centre case series.
CONCLUSION: Embolization for epistaxis is safe and effective. Of those who had recurrent epistaxis post embolization, most were taking P2Y12 inhibition and/or anticoagulation. We prefer bilateral distal internal maxillary artery and unilateral facial artery embolization under general anesthesia for optimal safety and efficacy. Advances in knowledge: Embolization with this technique seems to facilitate superior outcomes without complications despite the large proportion of patients taking anticoagulating or P2Y12 inhibiting agents. PMID: 28972795 [PubMed - as supplied by publisher]
Source: The British Journal of Radiology - October 3, 2017 Category: Radiology Authors: Robinson AE, McAuliffe W, Phillips TJ, Phatouros CC, Singh TP Tags: Br J Radiol Source Type: research

Galenic dural arteriovenous fistula in neurofibromatosis type 1 treated with Onyx.
We present an unusual case of GDAVF in a 37-year-old man with NF1. The fistula drained directly to the vein of Galen through multiple feeders. Complete occlusion of the fistula was achieved through trans-arterial embolisation with Onyx (ethylene vinyl alcohol copolymer) in a single treatment session. Deep venous drainage remained intact, and the patient recovered well. To our knowledge, this is the first report on complete closure of GDAVF with NF1 using trans-arterial embolisation. The preservation of functioning of the straight sinus may have contributed to the success of treatment. PMID: 31146620 [PubMed - as supplied by publisher]
Source: Interventional Neuroradiology - May 31, 2019 Category: Radiology Tags: Interv Neuroradiol Source Type: research

MRI brain scans may predict alcohol abuse in teens
MR brain images have revealed large amounts of gray matter volume in 14-year-olds...Read more on AuntMinnie.comRelated Reading: PET, fMRI shed light on alcohol's effects on brain DTI-MRI shows drinking affects young men and women differently MRI shows that cannabis alters youth brain development MRI links lifestyle factors to stroke, dementia risk fMRI shows what makes an angry drunk
Source: AuntMinnie.com Headlines - July 8, 2019 Category: Radiology Source Type: news

Brain MRI may predict alcohol abuse in teens
Brain MR images have revealed large amounts of gray-matter volume in 14-year-olds...Read more on AuntMinnie.comRelated Reading: PET, fMRI shed light on alcohol's effects on brain DTI-MRI shows drinking affects young men and women differently MRI shows that cannabis alters youth brain development MRI links lifestyle factors to stroke, dementia risk fMRI shows what makes an angry drunk
Source: AuntMinnie.com Headlines - July 9, 2019 Category: Radiology Source Type: news

fMRI finds reason for impulsive binge drinking
Functional MR images (fMRI) have uncovered decreased connectivity from excessive...Read more on AuntMinnie.comRelated Reading: MRI data show smoking, alcohol age the brain Brain MRI may predict alcohol abuse in teens PET, fMRI shed light on alcohol's effects on brain MRI links lifestyle factors to stroke, dementia risk fMRI shows what makes an angry drunk
Source: AuntMinnie.com Headlines - April 1, 2020 Category: Radiology Source Type: news

Potentially Reversible and Recognizable Acute Encephalopathic Syndromes: Disease Categorization and MRI Appearances ADULT BRAIN
SUMMARY: "Encephalopathy" is a vague term that encompasses varying definitions, often with a nonspecific clinical presentation and numerous possible pathophysiologic causes. Hence, MR imaging plays a crucial role in the early diagnosis and treatment by identifying imaging patterns when there is limited clinical history in such patients with acute encephalopathy. The aim of this review was to aid in remembrance of etiologies of potentially reversible acute encephalopathic syndromes on MR imaging. The differential includes vascular (reversible cerebral vasoconstriction syndrome, transient global amnesia, disseminated intrava...
Source: American Journal of Neuroradiology - August 11, 2020 Category: Radiology Authors: Koksel, Y., McKinney, A. M. Tags: ADULT BRAIN Source Type: research

fMRI shows white-matter damage leads to worse cognitive outcomes
Functional MRI (fMRI) shows that damage to white matter in the brain leads t...Read more on AuntMinnie.comRelated Reading: fMRI gets to the bottom of smell, taste dysfunction from COVID-19 fMRI reveals info about visual conditions in stroke patients fMRI reveals why big games create lasting memories fMRI rates drop due to decrease in Medicare reimbursement fMRI shows how 'one day at a time' works for alcoholics
Source: AuntMinnie.com Headlines - May 11, 2021 Category: Radiology Source Type: news