نتایج جستجو برای: multi frequency

تعداد نتایج: 924331  

Journal: :Physics in Medicine and Biology 2021

Abstract Time-reversal (TR) is a known wideband array beam-forming technique that has been suggested as treatment planning alternative in deep microwave hyperthermia for cancer treatment. While the aim classic TR to focus energy at specific point within target, no assumptions are made on secondary lobes might arise healthy tissues. These lobes, together with tissue heterogeneity, may result hot...

Journal: :International Journal of Optomechatronics 2020

Journal: :Proceedings of the International Astronomical Union 2017

Journal: :Annals of Mathematics and Artificial Intelligence 2009

2008
K. L. Granlund B. L. Daniel B. A. Hargreaves

The field map to the left was used to reconstruct the multi-frequency water and fat images shown above. The multi-frequency reconstruction images show improved image deblurring while maintaining water/fat separation and apparent contrast and SNR. Single Frequency Water Multi-frequency Water Single Frequency Fat Multi-frequency Fat −420 0 420 840 Frequency [Hz] Lo w − re so lu tio n S pe ct ru m...

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