Engineering a freehand 3D ultrasound system

Gee, Andrew H.; Prager, Richard W.; Treece, Graham M.; Berman, Laurence

doi:10.1016/s0167-8655(02)00180-0

Cited by 124 publications

(72 citation statements)

References 83 publications

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“…Freehand three-dimensional (3D) ultrasound (US), in which B-scan slices and probe trajectory are simultaneously recorded, provides a valuable clinical tool for volume measurement and the analysis of complex geometry [8,9,21,24]. However, the need for an add-on position sensor is inconvenient in a clinical environment.…”

Section: Speckle-based Distance Measurementmentioning

confidence: 99%

Speckle classification for sensorless freehand 3-D ultrasound

Hassenpflug

Prager

Treece

et al. 2005

Ultrasound in Medicine & Biology

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Section: Speckle-based Distance Measurementmentioning

confidence: 99%

Speckle classification for sensorless freehand 3-D ultrasound

Hassenpflug

Prager

Treece

et al. 2005

Ultrasound in Medicine & Biology

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“…It has applications in clinical volume measurement, analysis of complex geometry, surgery planning and radiotherapy planning [7]. As the probe is swept across the volume, the sensor records the position and orientation of the probe with respect to an external world coordinate system.…”

Section: Introductionmentioning

confidence: 99%

Rapid, easy and reliable calibration for freehand 3D ultrasound

Hsu

Prager

Gee

et al. 2006

Ultrasound in Medicine & Biology

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This paper presents improvements to the plane-based technique for calibrating freehand 3D ultrasound systems. The improvements are designed to make it easier for inexperienced users to perform plane-based calibration and to know that they have got a reliable result. In particular, we enable the calibration to be performed using water at room temperature while producing a result that is valid for average soft tissue, and we show how it is possible to provide feedback on the reliability of the calibration using a metric based on the curvature of the calibration criterion function. We present comprehensive results showing that these innovations improve the precision of the calibration and offer useful feedback to the user.

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“…Firstly, semi-freehand 3D scanning employs a mechanically-swept array that sweeps elevationally within its casing, while contact pressure is controlled manually. Secondly, we use a standard linear array tracked by a 6DOF position sensor for more traditional freehand 3D scanning [5,13]. Each 3D example that we present naturally requires many images to illustrate different planes slicing through each volume of data, so to save space in these figures we only show the second of our 2D colour maps.…”

Section: Resultsmentioning

confidence: 99%

An Intelligent Interface for Freehand Strain Imaging

Lindop

Treece

Gee

et al. 2008

Ultrasound in Medicine & Biology

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We present a new, intelligent interface for freehand strain imaging, which has been designed to support clinical trials investigating the potential of ultrasonic strain imaging for diagnostic purposes across a broad range of target pathologies. The aim with this interface is to make scanning easier, and to help clinicians learn the necessary scanning technique quickly, by providing real time feedback indicating the quality of the strain data as they are produced. The images are also easier to interpret, because data at unacceptably low signal-to-noise ratios do not reach the display. Overall, the interface also considerably reduces the difficulty in producing volumes of strain data from freehand 3D scans. Its main components are novel normalisation, persistence and display methods. These not only present data in a more meaningful format, but the level of noise in the displayed images is actually reduced compared to other methods that use the same strain estimates with the same level of persistence.

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Engineering a freehand 3D ultrasound system

Cited by 124 publications

References 83 publications

Speckle classification for sensorless freehand 3-D ultrasound

Speckle classification for sensorless freehand 3-D ultrasound

Rapid, easy and reliable calibration for freehand 3D ultrasound

An Intelligent Interface for Freehand Strain Imaging

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