【摘 要】
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Background, Motivation and Objective A 3D Ultrasound Computer Tomography (USCT) system for early detection of breast cancer was developed at KIT. The system was optimized for Synthetic Aperture Focusi
【机 构】
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Institute of Data Processing and Electronics, Karlsruhe Institute of Technology, Germany;Electrical
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Background, Motivation and Objective A 3D Ultrasound Computer Tomography (USCT) system for early detection of breast cancer was developed at KIT. The system was optimized for Synthetic Aperture Focusing Technique using unfocused ultrasound transducers. Due to low SNR of the data, a signal chain with Coded Excitation (CE) and a offline filtering step with an matched filter (MF) is applied. For complex objects the measured A-scans consist of multiple superimposed reflections. The separability of reflections is mainly limited by the systems limited bandwidth and the resulting side lobe artifacts in the signal. Non-separable reflections limit the resolution and contrast of the resulting images.
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