IEEE Access Special Section Editorial: Multi-Energy Computed Tomography and its Applications

X-ray computed tomography (XCT) can reconstruct the internal image of an object by measuring the information of passing X-rays. However, the conventional XCT not only has poor performance in tissue contrast and spatial resolution but also fails to provide quantitative analysis results and specific material components. To overcome these limitations, the multi-energy CT (MECT) emerges and attracts increasing attention. A typical MECT system has a great potential in reducing X-ray radiation dose, improving spatial resolution, enhancing material discrimination ability, and providing quantitative results by collecting several projections from different energy windows or spectrums either sequentially or simultaneously. It has obtained great achievement in terms of tissue characterization, lesion detection, material decomposition, and so on. This can enhance the capabilities of imaging internal structures for accurate diagnosis and optimized treatments.