Current and past projects in the Medical Imaging Group

An EPSRC project to build a freehand ultrasound system which does not employ a cumbersome position sensor but is nevertheless sufficiently accurate for quantitative volume measurement work. This will necessitate working with the RF data from the ultrasound machine, not the usual B-scans. The hardware we will assemble will therefore combine RF signal processing with freehand 3D scanning, opening the way for more speculative work to improve the ultrasound image quality by processing 3D, not the usual 2D, RF data. The people involved are Peter Hassenpflug, Dr Andrew Gee, Dr Richard Prager and Dr Graham Treece at Engineering plus Dr Laurence Berman at the Department of Radiology.

Stradx and Stradwin are software systems for the acquisition and visualisation of freehand three-dimensional ultrasound using a conventional ultrasound machine and a position sensor to track the trajectory of the probe. Stradx is a mature and sophisticated system that runs under Linux. It has been freely available on the web since 1997 and was used in research labs all over the world, before being superceded by Stradwin, our second generation system that runs under Windows and Linux. Stradwin was first released on the web in November 2004 and has recently been extended to handle all sorts of medical image data, not just ultrasound. Most of the algorithms developed in our research are incorporated in these software systems. This enables them to be evaluated and used by other members of the research community. The people involved are Dr Andrew Gee, Prof Richard Prager and Dr Graham Treece.

This is a project to build a 3D ultrasound machine that incorporates the advantages of both mechanically swept and freehand systems. It is funded by the HEFCE SRIF2 programme. The people involved are Dr Richard Prager, Dr Graham Treece and Dr Andrew Gee.

An EPSRC project to develop a system for the acquisition of exceptionally high resolution 3D ultrasound and investigate a number of promising clinical applications. This project is now complete. You can read the final report and the assessments by the anonymous referees. The people involved were Dr Graham Treece, Dr Richard Prager, and Dr Andrew Gee at Engineering plus Dr Charlotte Cash and Dr Laurence Berman at the Department of Radiology.

Current and past projects in the Medical Imaging Group

Current and past projects in the Medical Imaging Group

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Current and past projects in the Medical Imaging Group

Stradivarius

An EPSRC project to develop a system for the acquisition of 3D ultrasound data in a clinical environment. This project is now complete. The people involved were Patrick Gosling and Dr Richard Prager at Engineering plus Dr Laurence Berman at the Department of Radiology.

Hybrid 3D Ultrasonic Imaging

This is an EPSRC project in collaboration with the University Department of Radiology, Addenbrooke's Hospital. The aim is to produce a hybrid combining mechanically-swept and freehand 3D ultrasound. The new system will incorporate benefits from both the existing strategies and also offer some additional unique advantages. It will record dense regular data like the integrated 3D probe described above and will also acquire large data-sets as is possible with the freehand approach. There will be no need for an inconvenient external position sensor attached to the probe as much of the information required to calculate the probe trajectory can be inferred by matching the 3D blocks of recorded data. A miniature inertial orientation sensor will be used to guide the matching algorithms, increasing their speed and reliability. Such a sensor could eventually be incorporated in the probe housing, hence it will not be inconvenient in a clinical context.