Systems and methods for reducing radiation dose
A dose and noise reduction technology, applied in the field of medical and medical systems, can solve problems such as impact, reduce image quality, and patient exposure to radiation, and achieve the effect of improving image quality, reducing image noise, and improving performance
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Embodiment 2
[0175] Figures 14A-14C Exemplary images of different dose levels are shown according to some embodiments of the present application. Figure 14A The first image shown in, Figure 14B The second image shown in and Figure 14C The third images shown in both represent the same region of interest of the object. The first image corresponds to the first equivalent dose. The second image corresponds to a second equivalent dose higher than the first equivalent dose. According to process 800, a second image is generated based on the first image using a denoising neural network model. The third image corresponds to a third equivalent dose which is higher than 85% of the first equivalent dose. The noise level shown in the second image is lower than that shown in the first and third images.
Embodiment 3
[0176] Example 3, Exemplary Images of Different Dose Levels Generated Based on Different Reconstruction Algorithms.
[0177] Figures 15A-15C Exemplary images of different dose levels generated based on different reconstruction algorithms are shown according to some embodiments of the present application. Figure 15A The first image shown in, Figure 15B The second image shown in and Figure 15C The third image shown in represents the same region of interest of the object. The first image corresponds to the first equivalent dose. The first image is generated based on a filtered back-projection reconstruction algorithm. The second image corresponds to a second equivalent dose. The second equivalent dose is 55% of the first equivalent dose. The second image is generated based on a filtered back-projection reconstruction algorithm. The third image corresponds to a third equivalent dose that is the same as the second equivalent dose. according to Figure 9 In the shown pr...
Embodiment 4
[0178] Example 4, Exemplary Images of the Same Dose Level Generated Based on Different Reconstruction Algorithms.
[0179] Figure 16A and 16B These are exemplary images of the same dose level generated based on different reconstruction algorithms according to some embodiments of the present application. Figure 16A The first image shown in and Figure 16B The second image shown in represents the same region of interest of the object. The first image corresponds to the first equivalent dose. The first image is generated based on a filtered back-projection reconstruction algorithm. The second image corresponds to a second equivalent dose that is the same as the first equivalent dose. The second image is generated according to process 1000 and / or 1100 based on an iterative reconstruction algorithm. The noise level shown in the second image is lower than that shown in the first image.
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