Coronary Artery Disease Clinical Trial
Official title:
High Frame Rate Contrast Enhanced-ultrasound for the Assessment of Ischaemic Heart Disease
The study will compare standard ultrasound images to high frame rate ultrasound images in patients with heart disease or with a low risk of heart disease to see if a higher frame rate of ultrasound adds to the information obtained from standard ultrasound.
Following informed consent, patients recruited for the study will have an IV cannula inserted and will undergo imaging using 2 ultrasound systems. Standard clinical system (Philips IE33) will be used for 2D and CE imaging, followed by imaging using the Verasonics VantageTM research system (Verasonics Inc., Redmond, WA), using both conventional 2D and HFR modes. Baseline unenhanced 2D and Doppler images would initially be acquired using Philips IE33 system and Verasonics VatangeTM unenhanced conventional 2D and HFR mode . Ultrasound contrast agent (Sonovue) will be then injected via the intravenous (iv) cannula and 3 sets rest contrast images will be acquired - using the Phillips IE33, Verasonics and Verasonics VantageTM platform (conventional CE and HFR CE). Both systems will be optimised separately on each patient before and during infusion of contrast agent. When the optimal imaging and destruction parameters are set, there are not modified along the acquisition. This is followed by dipyridamole infusion and the scans being repeated during stress - 3 sets contrast images will be acquired - using the Philips IE33 and Verasonics VantageTM platform (conventional CE and HFR CE). ;
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