In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 120, No. 5_Supplement ( 2006-11-01), p. 3023-3023
Abstract:
Techniscan has completed a local phase of clinical trials of a unique inverse scattering breast cancer scanner. The scanner is based on transmission of plane waves from 0.3 to 2 MHz through the breast to a receiver on the opposite side of the breast. The receiver consists of a 2-D array of six rows by 160 columns. These elements are multiplexed by a factor of 12 into 80 analog to digital converters. The dual transducer-head design allows the inversion of the transmission data to create two independent quantitative images, one of speed of sound and a second of attenuation. The two heads are mechanically attached to a hollow rotating shaft, to provide 360 deg of mechanical motion. Typically, 180 to 360 steps per 360-deg rotation and 2-mm vertical steps are used to create a data set that is inverted into a 3-D image of 240 by 240 by 70 voxels. A unique set of custom circuit boards was constructed to implement scanner electronics. The next scanner version with anticipated inverse scattering resolution of 1 mm or less and reflection tomography resolution of 0.5 mm or less should improve performance. Clinical images to date and performance will be discussed.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
2006
detail.hit.zdb_id:
1461063-2
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