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Ultrasound is one of the only imaging modalities to provide real-time feedback, and with Clarius scanners enabled for research, images and raw data can be collected for further analysis and measuring physiological parameters not seen with other modalities. IMT and FMD for vascular health, aortic measurements for AAA screening, the use of power doppler for arthritis, or attenuation measurements for liver health are just a few examples of how Clarius can help expand diagnoses into these clinical areas.
Quality Controlled Data Acquisition
Clarius scanners have fully automated imaging workflows that require minimal user intervention, making deployment for large clinical studies simple and allowing for operator independence and reproducible results. Through our innovative AI tools for automated TGC and parameter adjustment, study coordinators can focus on the clinical data without worrying about discrepancies from operator variance.
All images and raw data get securely uploaded to the HIPAA-compliant Clarius Cloud where additional measurement, analysis, and reporting can be performed. Clinical trials spanning global institutions can be easily setup as the data will be available for analysis through the portal anywhere in the world.
Raw Data Package
The Raw Data Package allows users to collect raw envelope (B-mode), IQ, and RF signals from the scanner. When raw data is acquired by the user, it is automatically tagged with the corresponding image or cine clip captured during clinical operation.
- Pre-scan converted greyscale with a range of 256 shades of grey.
- Demodulated IQ in signed 32-bit pairs.
- Beamformed RF in signed 16 bit format that has been digitized at 14-bits (pre-beamformed RF signals are not available on Clarius scanners).
- When collecting only B and IQ data, the raw data is collected at the native imaging frame-rate. When additionally collecting RF data, the frame rate is reduced by 15 to 20%.
- Up to 30 seconds of envelope data, and up to 15 seconds of IQ and RF data (dependent on the scanner model and mode of operation).
- Downloaded into the Clarius App after the image is frozen by capturing a single image or cine clip.
- Data transfers from the scanner to the App may take up to 30 seconds, depending on the buffer size collected. During this time, real-time scanning is not permitted.
- Raw data is automatically sent to the Clarius Cloud (with proper Internet connection) once an exam has been completed.
- Raw data is tagged and stored alongside the captured image or cine clip.
- On Android devices, users can export raw data onto the mobile device storage once the exam has been completed.
- All data is acquired from the visible imaging sector.
3D Positional Data Package
The 3D Positional Data Package allows users to collect the 9DOF data from the inertial measurement unit (IMU) embedded on each Clarius scanner.
- Gyroscope information from X, Y, and Z axes
- Accelerometer information from X, Y, and Z axes
- Magnetometer information from X, Y, and Z axes
- Precise timestamp to help correlate IMU data with the ultrasound images.
- The pre-programmed IMU collection rate is 200 Hz, as imaging typically runs at 15 to 30 FPS, and each frame is tagged with multiple IMU data points.
- IMU data is collected for the entire duration of the scan, where the maximum cine buffer is programmed for 30 seconds.
- IMU data is automatically transferred (with proper Internet connection) to Clarius Cloud with the ultrasound images once the exam has been completed.
- IMU data is tagged and stored alongside the captured image or cine clip.
- With the Raw Data package, IMU data will also be stored in the raw data files that are collected from the scanner.
The Listener API works like Clarius Cast, where multiple devices can view an ultrasound scan in real-time. The Listener API enables users to build custom software to receive a live ultrasound stream from a Scanner already connected from a Clarius App.
- Real-time streaming of scan-converted B mode and Color Doppler images
- Raw data such as IQ, RF, as well as IMU data cannot be streamed through the API.
- The API must be running on a device that is already connected to the scanner's WiFi Direct. Alternatively, all devices can be connected to a local WiFi router.
- The API must be programmed with the Scanner's IP address and the UDP streaming port in order to make a connection. This information can programmed to be static to minimize program setup.
- Data rates on WiFi vary. In most cases, the Listener API will be able to receive ultrasound images at the native framerate with little to no latency.
Buffering and Storage
- It is up to the software written using the Listener API to display, buffer, and store images should that functionality be desired.