A Novel 3D Reconstruction Algorithm of Motion-Blurred CT Image

Abstract

The majority of medical workers are eager to obtain realistic and real-time CT 3D reconstruction results. However, autonomous or involuntary motion of patients can cause blurring of CT images. For the 3D reconstruction scene of motion-blurred CT image, this paper consists of two parts: firstly, a GAN image translation network deblurring algorithm is proposed to remove blurred results. This algorithm adopts the clear image to supervise the training process of the blurred image, which creates solutions that are close to the clear image. Secondly, this paper proposes a Marching Cubes (MC) algorithm based on the fusion of golden section and isosurface direction smooth (GI-MC) for 3D reconstruction of CT images. The golden section algorithm is used to calculate the equivalent points and normal vectors, which reduces the calculation numbers from four to one. The isosurface direction smooth algorithm computes the mean value of the normal vector, so as to smooth the direction of all triangular patches in spatial arrangement. The experimental results show that for different blurred angle and blurred amplitude, comparing the results of the Shannon entropy ratio and peak signal-to-noise ratio, our GAN image translation network deblurring algorithm has better restoration than other algorithms. Furthermore, for different types of liver patients, the reconstruction accuracy of our GI-MC algorithm is 9.9%, 7.7%, and 3.9% higher than that of the traditional MC algorithm, Li’s algorithm, and Pratomo’s algorithm, respectively.

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“…Introducing intelligent algorithm into CT imaging can greatly improve the sharpness of image [ 16 ]. Jing et al [ 17 ] can clearly supervise the training process of fuzzy images by using 3D reconstructed CT images, and the intelligent algorithm used showed good results. Huang et al [ 18 ] used intelligent algorithm to ensure the quality of CT image registration and obtain the accuracy of dual-energy images.…”

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“…Computed tomography (CT) is crucial in medical diagnosis and illness analysis [1][2][3][4][5]. As excessive CT scan probably causes a series of acute potential cancers and cases, the medical instrument usually adopts a CT radiation dose as low as possible to avert the damage to health.…”