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With this technology, physicians can obtain a more anatomically authentic view of the heart and dynamic blood flow in one view during interventional valve procedures, even in patients with ECG abnormalities. This helps them to make faster and more accurate critical decisions.
During 3D TEE imaging, the physician guides a flexible probe into the esophagus to acquire close-range, detailed pictures of the heart to assess valve function. When a dysfunctional valve leaks blood back into the heart chambers (known as
regurgitation) or does not open properly to let through sufficient blood, a valve procedure may be necessary to repair or replace the valve with an artificial one. TEE is used to guide placement of devices such as mitraclips and artificial valves during cardiac interventions to correct valve dysfunction.
Current methods of imaging with 3D TEE require stitching – the fusion of multiple heartbeats – to form a complete image of heart function and blood flow. This gated acquisition eliminates almost all patients with any ECG abnormalities and often results in image artifacts, which may skew results. However, the new Z6Ms true volume TEE probe on the Acuson SC2000 Prime is the first Siemens transducer to use true volume 3D TEE with 90 x 90 degree real-time acquisition and volume colour Doppler, enabling full 3D images of the heart, in every heartbeat without stitching.
By eliminating the need for multiple beats to form an image and adding volume colur Doppler capabilities, the Z6Ms true volume TEE probe allows the surgeon to visualise and assess blood flow in real-time during a procedure to make sure the
repaired or replaced valve is working properly, potentially reducing the need for a secondary intervention to correct any remaining regurgitation.
“Volume colour Doppler is extremely important,” says Dr Lissa Sugeng, Associate Professor of Medicine at Yale University. “With Siemens’ new volume acquisition, I can see the entire valve, locate the regurgitant jet, and assess the size of the orifice very quickly so that we can continue with the procedure.”
Also introduced for the first time on the Acuson SC2000 Prime is the eSie Valves advanced analysis package, an automated software to measure heart valves during cardiac procedures. While standard quantification software takes several minutes to provide measurements of heart valves, eSie Valves provides automated measurements for the aortic and mitral valves in seconds. This quantitative information allows physicians to quickly and easily evaluate valvular anatomy and physiology, which aids in device sizing and surgical repair.
“We are aiming to provide tools with standard-setting performance and workflow, equipping physicians to focus on their patients and explore new and more efficacious procedures,” says Dr Jeffrey Bundy, CEO, Siemens Ultrasound.
The new PRIME technologies including the Z6Ms true volume TEE transducer and the eSie Valves package are also available as an upgrade for users of previous versions of the Acuson SC2000 system.
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