Ultrasound tomography reconstruction algorithm using two opposite rotatable linear arrays for breast cancer diagnosis

This article presents a new ultrasound transmission tomography reconstruction algorithm based on isometric fan-shaped beam along the straight trajectory for an original breast imaging system with cylindrical motion of opposite linear arrays. The computed and measurement scheme are described in detail. is derived. numerical phantom model built, including eight structures representing adipose tissue, glandular cysts, fibroadenomas, cancer, calcifications. Using one array as transmitter other receiver, attenuation distribution medium interposed between them reconstructed. However, limited angle usually plagued by artifacts depth image that cause shape distortion to be ellipses, which had impact accurate judgment size shape. B-mode images used prior information aid improving quality aperture reconstructions. Simulation results show number, location, size, cyst, fibroadenoma, calcification Moreover, quantitative analysis reconstructed demonstrates performance region interest has been greatly improved, verifies feasibility using two produced designed algorithm, allowing assessment morphology, orientation, internal structure, margins lesions tissue. ability create good arrays allows reconstructing three-dimensional cancer detection characterization studies.