Ms. Laura I. Cervino Profile

Laura I. Cervino

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Proceedings Article | 14 March 2007 Paper

Performance characterization of a volumetric breast ultrasound scanner

Thomas Nelson, Jakob Nebeker, Susie Denton, Laura Cervino, Dolores Pretorius, John Boone

Proceedings Volume 6510, 65101G (2007) https://doi.org/10.1117/12.708325

KEYWORDS: Breast, Scanners, Ultrasonography, Spatial resolution, Transducers, Breast cancer, Image resolution, Imaging systems, Image quality, Distortion

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The purpose of this project was to design, build, and characterize the performance of a volume breast ultrasound (VBUS) scanner that images the pendant breast. VBUS scanner design includes a: 1) clinical ultrasound scanner and transducer; 2) scanning table with a hole for the pendant breast; 3) rotational gantry; 4) probe mounting assembly; 5) compressionless breast stabilization device; 6) acquisition, control, reconstruction, and display software. Performance assessment characterized a variety of parameters including: spatial resolution, uniformity, and distortion using high and low contrast test objects in both horizontal and vertical scanning modes. The VBUS scanner modules have been constructed and initial performance evaluated. Approximately 300 scans are acquired over 360 degrees in 18 seconds. Reconstruction requires 25 ms per slice. Test object images depicted hyper- and hypo-echoic masses and demonstrated good resolution, soft tissue contrast and reduced speckle compared to conventional US images. Although scanner performance is satisfactory, additional developments including reduced spacing transducer - scanned object spacing and corrections for sound velocity and aberrations will improve operation. Future work will continue system optimization.

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