Comput Math Methods Med - Fast and automatic ultrasound simulation from CT images.

Tópicos

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Resumo

Ultrasound is currently widely used in clinical diagnosis because of its fast and safe imaging principles. As the anatomical structures present in an ultrasound image are not as clear as CT or MRI. Physicians usually need advance clinical knowledge and experience to distinguish diseased tissues. Fast simulation of ultrasound provides a cost-effective way for the training and correlation of ultrasound and the anatomic structures. In this paper, a novel method is proposed for fast simulation of ultrasound from a CT image. A multiscale method is developed to enhance tubular structures so as to simulate the blood flow. The acoustic response of common tissues is generated by weighted integration of adjacent regions on the ultrasound propagation path in the CT image, from which parameters, including attenuation, reflection, scattering, and noise, are estimated simultaneously. The thin-plate spline interpolation method is employed to transform the simulation image between polar and rectangular coordinate systems. The Kaiser window function is utilized to produce integration and radial blurring effects of multiple transducer elements. Experimental results show that the developed method is very fast and effective, allowing realistic ultrasound to be fast generated. Given that the developed method is fully automatic, it can be utilized for ultrasound guided navigation in clinical practice and for training purpose.

Resumo Limpo

ultrasound current wide use clinic diagnosi fast safe imag principl anatom structur present ultrasound imag clear ct mri physician usual need advanc clinic knowledg experi distinguish diseas tissu fast simul ultrasound provid costeffect way train correl ultrasound anatom structur paper novel method propos fast simul ultrasound ct imag multiscal method develop enhanc tubular structur simul blood flow acoust respons common tissu generat weight integr adjac region ultrasound propag path ct imag paramet includ attenu reflect scatter nois estim simultan thinplat spline interpol method employ transform simul imag polar rectangular coordin system kaiser window function util produc integr radial blur effect multipl transduc element experiment result show develop method fast effect allow realist ultrasound fast generat given develop method fulli automat can util ultrasound guid navig clinic practic train purpos

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