Parallel-detection microwave spectroscopy system for breast imaging
| العنوان: | Parallel-detection microwave spectroscopy system for breast imaging |
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| المؤلفون: | Sarah A. Pendergrass, Timothy Raynolds, Dun Li, Margaret W. Fanning, Keith D. Paulsen, Paul M. Meaney |
| المصدر: | Review of Scientific Instruments. 75:2305-2313 |
| بيانات النشر: | AIP Publishing, 2004. |
| سنة النشر: | 2004 |
| مصطلحات موضوعية: | Materials science, Nuclear magnetic resonance, Amplitude, Microwave imaging, Intermediate frequency, Breast imaging, Dynamic range, Acoustics, Bandwidth (signal processing), Broadband, Dielectric, Instrumentation |
| الوصف: | A liquid-coupled, noncontacting, broadband microwave imaging system has been designed and fabricated. Extension of the operating bandwidth allows us to exploit the potential of new clinical information for breast cancer diagnosis at frequencies higher than previously achieved. The new system design implements a parallel-detection scheme that allows signals to be simultaneously sampled at multiple receiving antenna sites (in 8 s for a single tomographic slice at a single frequency). It also has important features such as high cross-channel isolation (>120 dB), smooth broad bandwidth receiver response, and adjustable intermediate frequency signal amplification factors of 1 to 2000 to ensure successful realization of a large linear dynamic range which is especially important to counteract the increased signal loss at the higher operating frequencies. The new system is capable of recovering dielectric properties of breastlike phantoms with tumor inclusions over the frequency range from 0.5 to 2.1 GHz when embedded in an 87%/13% glycerin/water background. Errors in the measurement data are less than 0.5% in signal amplitude and 1° in phase, on average. |
| تدمد: | 1089-7623 0034-6748 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::d4563a9edfe5b71ac0328d2649868782Test https://doi.org/10.1063/1.1764609Test |
| رقم الانضمام: | edsair.doi...........d4563a9edfe5b71ac0328d2649868782 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897623 00346748 |
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