Application of Dual Modality Contrast Agent Combined with Multi-Scale Representation in Ultrasound-Magnetic Resonance Imaging Registration Scheme

To achieve the image registration/fusion and perfect the quality of theintegration, with dual modality contrast agent (DMCA), a novel multi-scale representation registration method between ultrasound imaging (US) and magneticresonance imaging (MRI) is presented in the paper, and how DMCA influenceon registration accuracy is chiefly discussed. Owing to US’s intense speckle noise,it is a tremendous challenge to register US with any other modality images. Howto improve the algorithms for US processing has become the bottleneck, and inthe short term it is difficult to have a breakthrough. In that case, DMCA isemployed in both US and MRI to enhance the region of interest. Then, becausemulti-scale representation is a strategy that attempts to diminish or eliminate several possible local minima and lead to convex optimization problems to be solvedquickly and more efficiently, a multi-scale representation Gaussian pyramid basedaffine registration (MRGP-AR) scheme is constructed to complete the US-MRIregistration process. In view of the above-mentioned method, the comparison testsindicate that US-MRI registration/fusion may be a remarkable method for gaininghigh-quality registration image. The experiments also show that it is feasible thatnovel nano-materials combined with excellent algorithm are used to solve somehard tasks in medical image processing field.