RS85 Diagnostic Ultrasound System

The RS85 Diagnostic Ultrasound System is a comprehensive, mobile imaging platform designed to acquire and display ultrasound data across a multitude of clinical applications using various established and advanced imaging modes. It enhances diagnostic capabilities through features like AI-powered NerveTrack for improved nerve visualization and quantitative measurement, alongside improved hardware such as an OLED monitor and additional transducer options.

The RS85 Diagnostic Ultrasound System is a general-purpose, mobile, software-controlled device designed for acquiring ultrasound images and analyzing body fluids. It is intended for use by appropriately trained healthcare professionals in various clinical settings, including hospitals and private practices, for diagnostic purposes. The system supports a wide array of clinical applications such as fetal/obstetrics, abdominal, gynecological, intraoperative, pediatric, small organ, cephalic (neonatal and adult), trans-rectal, trans-vaginal, musculoskeletal, urological, cardiac (adult and pediatric, including trans-esophageal), and peripheral vessel imaging. It offers multiple modes of operation including 2D, M-mode, Color Doppler, Pulsed Wave (PW) Doppler, Continuous Wave (CW) Doppler, Tissue Doppler Imaging (TDI), Tissue Doppler Wave (TDW), Power Doppler (PD), ElastoScan™ Mode, Multi-Image modes, and 3D/4D imaging. The system incorporates several technological advancements and features. These include two migrated transducers (miniER7, L3-22), an Extended Power Pack (EPP) for additional power supply, and a 27-inch OLED monitor. A key feature is NerveTrack, an AI-based technology for nerve detection and segmentation, which includes a sub-function, EzNerveMeasure, for calculating Flattening Ratio (FR) and Cross-sectional Area (CSA) of nerves. Non-clinical validation of NerveTrack's detection algorithm on 3,999 nerve images showed an average accuracy of 89.6%. The segmentation algorithm, validated on 1,753 images, demonstrated an average accuracy of 99.78% and a Dice similarity coefficient of 90.44%. EzNerveMeasure, tested on 50 median nerve images, showed average error rates of 6.11% for FR and 9.75% for CSA. The system also features SonoSync for remote diagnostic image viewing and review, and Mobile Export as an optional feature.

AI Regulatory Concerns

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Jev reads the full FDA letter and returns calibrated concern probabilities per regulatory category. These are AI estimates, not regulatory advice.

• Q1. How does the performance of NerveTrack's AI-based detection and segmentation vary across different nerve types and patient demographics beyond the Korean population used in the validation studies?; What is the quantifiable impact of the EzNerveMeasure feature (Flattening Ratio and Cross-sectional Area) on diagnostic accuracy and inter-observer variability for conditions like carpal tunnel syndrome?; How does the image quality and diagnostic utility of the 27-inch OLED monitor compare to standard medical-grade LCDs, particularly in visualizing subtle tissue differentiations or low-contrast lesions?; What are the specific network requirements and latency considerations for the SonoSync remote viewing feature to ensure diagnostic integrity and real-time collaborative utility?; How do the new transducers (miniER7, L3-22) enhance imaging capabilities for their intended applications compared to previously available transducers for this system or its predicates?