AI in ultrasound has been a buzzword for long enough that it risks losing meaning. Every manufacturer now claims AI somewhere in the pipeline, and the claims range from genuinely useful to essentially marketing gloss. The Mindray Resona I9T is a system where the AI components are substantive enough to be worth examining specifically — because what it does is meaningfully different from a smart auto-gain adjustment.
ZST+: The Beamforming Engine
The Resona I9T runs on Mindray's ZST+ (Zone Sonography Technology+) architecture. Conventional ultrasound systems use focused transmit beams that insonify one zone of tissue at a time, then steer sequentially across the image plane to build a frame. ZST+ uses diverging wave transmissions that illuminate the entire image plane simultaneously, acquiring multiple angles and using coherent compounding to reconstruct the final image.
The practical advantages are significant. Frame rates with ZST+ are substantially higher than conventional focused ultrasound — important for cardiac and vascular applications where motion is continuous and high temporal resolution is diagnostically relevant. The full coherent compounding process also improves spatial resolution and reduces speckle noise compared to single-angle focused beam imaging.
AI-Assisted Image Optimization
Traditional ultrasound optimization requires the sonographer to manually adjust gain, time-gain compensation curves, focal zone placement, and dynamic range. On a busy day with patients of varying habitus and acoustic windows, getting these settings right takes time and varies across operators.
The Resona I9T includes automated AI-driven image optimization that analyzes the received echo data and adjusts imaging parameters in real time. This is not a fixed preset — the optimization is adaptive to the specific patient and probe position. For departments managing high scan volumes or with staff of varying experience levels, automated optimization reduces setup time and improves image consistency across the patient population.
Cardiac Applications: Where the Platform Excels
The Resona I9T is particularly capable in cardiac imaging. 4D TEE (transesophageal echocardiography) using the Live 3D TEE transducer enables real-time volumetric cardiac imaging with the high frame rates that ZST+ supports. Strain imaging with eStrain provides quantitative myocardial deformation analysis — a sensitive early indicator of subclinical ventricular dysfunction that precedes changes in ejection fraction.
AutoEF with AI contour detection automates the measurement of left ventricular ejection fraction, one of the most clinically important and frequently measured echocardiographic parameters. The AI contour algorithm identifies the endocardial border and calculates volumes at end-diastole and end-systole across the full cardiac cycle, producing an EF with substantially less manual tracing effort and operator variability. For echo labs processing high volumes of routine surveillance studies, this represents meaningful workflow compression.
Point-of-Care and Clinical Versatility
While the Resona I9T is a cart-based system positioned for high-complexity imaging environments, it covers the full clinical application range: OB/GYN, abdominal, small parts, MSK, and vascular in addition to cardiac. Crystal Flow microvascular imaging provides non-contrast blood flow visualization in small vessels — useful in thyroid, hepatic, and renal applications where standard Color Doppler's sensitivity is insufficient.
The touchscreen interface with iWorks automated protocols makes the system accessible to a range of operators. The 5-year standard warranty with Mindray's Living Technology commitment means software capability additions continue post-purchase, an important consideration for a system expected to be in clinical service for a decade or more.
Bottom Line: The Mindray Resona I9T is a genuine high-performance cardiac and general imaging platform where the AI features — automated optimization, AutoEF, eStrain, 4D TEE — address real workflow and quality challenges rather than serving as marketing checkboxes. For echo-heavy practices and imaging departments where scan volume and operator consistency matter, it is worth a serious evaluation.
Looking to add or replace and ultrasound? We would love to hear from you as we offer a ultrasound consultations at no charge, where we help fit you with the best ultrasound for your specific needs. Be sure to reach out to us today.
