FO019FERUMOXYTOL MR ANGIOGRAPHY VS DOPPLER US FOR VASCULAR MAPPING BEFORE HAEMODIALYSIS ARTERIOVENOUS ACCESS CREATION

2019 ◽  
Vol 34 (Supplement_1) ◽  
Author(s):  
Sokratis Stoumpos ◽  
Alfred Tan ◽  
Martin Hennessy ◽  
Ram Kasthuri ◽  
Aleksandra Radjenovic ◽  
...  
Keyword(s):  
Mr Angiography ◽  
Doppler Us ◽  
Vascular Mapping ◽  
Arteriovenous Access

Renal Arterial Stenosis: Prospective Comparison of Color Doppler US and Breath-hold, Three-dimensional, Dynamic, Gadolinium-enhanced MR Angiography

Radiology ◽  
2000 ◽  
Vol 214 (2) ◽  
pp. 373-380 ◽  
Author(s):  
Francesco De Cobelli ◽  
Massimo Venturini ◽  
Angelo Vanzulli ◽  
Sandro Sironi ◽  
Marco Salvioni ◽  
...  
Keyword(s):  
Mr Angiography ◽  
Color Doppler ◽  
Three Dimensional ◽  
Arterial Stenosis ◽  
Breath Hold ◽  
Doppler Us ◽  
Prospective Comparison ◽  
Color Doppler Us

scholarly journals Ferumoxytol MR Angiography versus Duplex US for Vascular Mapping before Arteriovenous Fistula Surgery for Hemodialysis

Radiology ◽  
2020 ◽  
Vol 297 (1) ◽  
pp. 214-222 ◽  
Author(s):  
Sokratis Stoumpos ◽  
Alfred Tan ◽  
Pauline Hall Barrientos ◽  
Karen Stevenson ◽  
Peter C. Thomson ◽  
...  
Keyword(s):  
Arteriovenous Fistula ◽  
Mr Angiography ◽  
Fistula Surgery ◽  
Vascular Mapping

VAVASC study: Clinical trial protocol

2021 ◽  
pp. 112972982110426
Author(s):  
Lawrie Katerina ◽  
O’Neill Stephen ◽  
Waldauf Petr ◽  
Balaz Peter
Keyword(s):  
Demographic Data ◽  
International Study ◽  
Venous Access ◽  
Current Status ◽  
Participant Recruitment ◽  
Mapping Parameters ◽  
Vascular Mapping ◽  
Arteriovenous Access ◽  
Clinical Trials Registry ◽  
Vascular Status

Background: VAVASC study (Validation of Arterio Venous Access Stage Classification) is a multicentre, international, prospective study. The study aims to validate the AVAS classification, which is a classification system describing vascular status of patients indicated for creation of arteriovenous access on the upper limb. Methods: Observational, prospective, multicentre, international study starting in March 2021. Participant recruitment has commenced. Basic demographic data, risk factors and vascular mapping parameters are collected via an online platform. The outcome measures are class of AVAS, predicted arteriovenous access, final arteriovenous access that has been created and a functionality of the arteriovenous access. Predictive models will be used for statistical analysis. Current status: A total of 140 patients from 4 centres in Great Britain, Czech Republic, Brazil and Slovakia are already included and undergoing evaluation. Conclusions: The study is registered in the Clinical trials registry (NCT04796558), https://register.clinicaltrials.gov/ . Study is still open for collaboration with other centres that can register via www.vavasc.com .

Overestimation of moderate carotid stenosis assessed by both Doppler US and contrast enhanced 3D-MR angiography in the CARMEDAS study

2011 ◽  
Vol 38 (3) ◽  
pp. 148-155 ◽  
Author(s):  
M. Nonent ◽  
D. Ben Salem ◽  
J.-M. Serfaty ◽  
V. Buthion ◽  
A. Pasco-Papon ◽  
...  
Keyword(s):  
Carotid Stenosis ◽  
Mr Angiography ◽  
Doppler Us ◽  
Contrast Enhanced

scholarly journals Imaging of Renovascular Hypertension: Respective Values of Renal Scintigraphy, Renal Doppler US, and MR Angiography

Radiographics ◽  
2000 ◽  
Vol 20 (5) ◽  
pp. 1355-1368 ◽  
Author(s):  
Gilles Soulez ◽  
Vincent L. Oliva ◽  
Sophie Turpin ◽  
Raymond Lambert ◽  
Viviane Nicolet ◽  
...  
Keyword(s):  
Renovascular Hypertension ◽  
Mr Angiography ◽  
Renal Scintigraphy ◽  
Doppler Us ◽  
Renal Doppler

MR Angiography Overused in Assessing Vertigo

2006 ◽  
Vol 39 (5) ◽  
pp. 13
Author(s):  
ELAINE ZABLOCKI
Keyword(s):  
Mr Angiography

Time-resolved, contrast-enhanced 3D MR angiography in the subclavian steal effect

VASA ◽  
2010 ◽  
Vol 39 (1) ◽  
pp. 85-93 ◽  
Author(s):  
Schubert
Keyword(s):  
Mr Angiography ◽  
Time Resolved ◽  
Time To Peak ◽  
Vertebral Arteries ◽  
Subclavian Steal ◽  
Cerebrovascular Events ◽  
Graphic Analysis ◽  
Contrast Enhanced ◽  
Hemodynamic Information ◽  
Supraaortic Vessels

The subclavian steal effect indicates atherosclerotic disease of the supraaortic vessels but rarely causes cerebrovascular events in itself. Noninvasive imaging providing detailed anatomic as well as hemodynamic information would therefore be desirable. From a group of 25 consecutive patients referred for MR angiography, four with absent or highly attenuated signal in one of the vertebral arteries on 3D multislab time-of-flight MR angiography were selected to undergo 3D time-resolved contrast-enhanced MR angiography. The time-resolved 3D contrast series (source images and MIPs) were evaluated visually and by graphic analysis of time-intensity curves derived from the respective V1 and V3 segments of both vertebral arteries on the source images. In two cases with high-grade proximal left subclavian stenosis, time-resolved 3D ce-MRA was able to visualise retrograde contrast filling of the left VA. There was a marked delay in time-to-peak between the left and right V1 segments in one case and a shallower slope of enhancement in another. In the other two cases, there was complete or collateralised segmental occlusion of the VAs.

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