Free Software from the Medical Imaging Group

We offer two experimental software systems for freehand three-dimensional ultrasound imaging. Broadly, Stradx is a highly sophisticated and flexible research tool that runs under Linux or Irix (on SGI machines), whereas Stradwin is an easy-to-use tool that runs under Linux and Windows.

Freehand three-dimensional ultrasound imaging is performed by attaching a position sensor to the ultrasound probe and using a computer to record the trajectory of the probe as the clinician perfoms the scan. Both Stradx and Stradwin are designed to work with a wide variety of position sensors and ultrasound machines.

Stradwin Features

• Runs under Linux using v4l2 video, or under Windows using DirectShow.
• Works with Polhemus Fastrak, Polhemus Patriot, Northern Digital Polaris or Ascension MiniBird, LaserBird or Flock of Birds position sensor.
• Works with PAL/NTSC ultrasound image or radio frequency ultrasound image input.
• Incorporates fast, accurate, calibration facility that is even easier to use than the Stradx calibration tool.
• Provides real-time flat reslice tool that can be oriented interactively at any angle. Also includes a tool to create orthogonal reslice views.
• Has an easy-to-use manual segmentation facility and an accurate volume measurement tool.
• Offers a facility for defining landmark points in the data and using them to measure distances and angles.
• Incorporates a tool for calibrating a pointer which can be used to locate external fiducial landmarks in 3D space.
• Has a tool for aligning the internal representation with an external (isocentre) coordinate system. Reslice images can then be produced parallel to one of the axes of this coordinate system.
• Has a novel "hands free" recording mode.
• Works with Doppler data.
• Uses an open file format and includes comprehensive documentation.

Stradx Features

• Runs under Linux using v4l2 video, or under SGI Irix.
• Works with Polhemus Fastrak, Polhemus Patriot, Northern Digital Polaris or Ascension MiniBird, LaserBird or Flock of Birds position sensor.
• Works with PAL/NTSC, digital or radio frequency ultrasound image input.
• Incorporates fast, accurate spatial and temporal calibration facilities.
• Offers registration tools for probe pressure correction, aligning sweeps and alignment to other modalities.
• Provides various types of real-time flat and curved reslice, panorama and slab-rendering tools.
• Includes segmentation and volume measurement tools that work on multiple sweeps of data.
• Uses an open file format and includes comprehensive documentation.

Download Stradx.