Fast 3D Volumetric Image Reconstruction from 2D MRI Slices by Parallel Processing
Article Type
Research Article
Publication Title
SN Computer Science
Abstract
Magnetic Resonance Imaging (MRI) is a technology for non-invasive imaging of anatomical features in detail. It can help in functional analysis of organs of a specimen but it is very costly. In this work, methods for (1) virtual three-dimensional (3D) reconstruction from a single sequence of two-dimensional (2D) slices of MR images of a human spine and brain taken at a certain gap along a single axis, and (2) generation of missing inter-slice data are proposed. Our approach helps in preserving the edges, shape, and size, as well as the internal tissue structures of the object being captured. The sequence of original 2D slices along a single axis is divided into smaller equal sub-parts which are then reconstructed using edge-preserved kriging interpolation to predict the missing slice information. In order to speed up the process of interpolation, we have used parallel processing by carrying out the initial interpolation on parallel cores. From the 3D matrix thus formed, shearlet transform is applied to estimate the edges considering the 2D blocks along the Z axis, and to minimize the blurring effect using a proposed mean-median logic. Finally, for visualization, the sub-matrices are merged into a final 3D matrix. Next, the newly formed 3D matrix is split up into voxels, and the marching cubes method is applied to get the approximate 3D image for viewing. To the best of our knowledge it is a first of its kind approach based on kriging interpolation and parallel processing for 3D reconstruction from 2D slices, and approximately 98.89% accuracy is achieved with respect to similarity metrics for image comparison. The time required for reconstruction has also been reduced by approximately 70% with parallel processing even for a large input data set compared to that with single core processing.
DOI
10.1007/s42979-024-03370-7
Publication Date
12-1-2024
Recommended Citation
Ghoshal, Somoballi; Goswami, Shreemoyee; Chakrabarti, Amlan; and Sur-Kolay, Susmita, "Fast 3D Volumetric Image Reconstruction from 2D MRI Slices by Parallel Processing" (2024). Journal Articles. 4781.
https://digitalcommons.isical.ac.in/journal-articles/4781