Evaluation of Back Projection Methods for Breast Tomosynthesis Image Reconstruction

Zhou, Weihua; Lu, Jianping; Zhou, Otto; Chen, Ying

doi:10.1007/s10278-014-9736-6

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…To achieve highly accurate detection results, it is crucial to obtain a high-resolution, 2D image with clear target features. Currently, numerous scholars have devoted significant efforts to achieve high-quality 2D imaging by enhancing techniques, such as backprojection algorithms [ 29 ], frequency scaling algorithms [ 30 ], and holographic imaging algorithms [ 31 ]. The objective is to improve the signal-to-noise ratio and enhance image features.…”

Section: Methods Of Spectral Reconstruction Imaging and Quantitative ...mentioning

confidence: 99%

Visual Quantitative Detection of Delamination Defects in GFRP via Microwave

Yang

Wang

et al. 2023

Sensors

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Glass Fiber reinforced polymers (GFRPs) are widely used and play an important role in modern society. The multilayer structure of GFRPs can lead to delamination defects during production and service, which can have a significant impact on the integrity and safety of the equipment. Therefore, it is important to monitor these delamination defects during equipment service in order to evaluate their effects on equipment performance and lifespan. Microwave imaging testing, with its high sensitivity and noncontact nature, shows promise as a potential method for detecting delamination defects in GFRPs. However, there is currently limited research on the quantitative characterization of defect images in this field. In order to achieve visual quantitative nondestructive testing (NDT), we propose a 2D-imaging visualization and quantitative characterization method for delamination defects in GFRP, and realize the combination of visual detection and quantitative detection. We built a microwave testing experimental system to verify the effectiveness of the proposed method. The results of the experiment indicate the effectiveness and innovation of the method, which can effectively detect all delamination defects of 0.5 mm thickness inside GFRP with high accuracy, the signal-to-background ratio (SBR) of 2D imaging can reach 4.41 dB, the quantitative error of position is within 0.5 mm, and the relative error of area is within 11%.

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Section: Methods Of Spectral Reconstruction Imaging and Quantitative ...mentioning

confidence: 99%

Visual Quantitative Detection of Delamination Defects in GFRP via Microwave

Yang

Wang

et al. 2023

Sensors

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“…This approach is rooted in the precise partitioning of the Discrete Fourier Theorem space under the projective Discrete Radon Transform, as denoted in the Discrete Fourier Theorem. To further augment image quality and move beyond the confines of conventional backprojection methods, Zhou, Lu et al [10] precede two innovative backprojection variants: the α-trimmed backprojection and the principal component analysis-based backprojection. These variants offer the promise of superior image quality, which is a critical factor in numerous tomographic applications.…”

Section: Tomographic Reconstruction Techniques Principles and New App...mentioning

confidence: 99%

Algorithms in Tomography and Related Inverse Problems—A Review

Tassiopoulou,

Koukiou,

Anastassopoulos

2024

Algorithms

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In the ever-evolving landscape of tomographic imaging algorithms, this literature review explores a diverse array of themes shaping the field’s progress. It encompasses foundational principles, special innovative approaches, tomographic implementation algorithms, and applications of tomography in medicine, natural sciences, remote sensing, and seismology. This choice is to show off the diversity of tomographic applications and simultaneously the new trends in tomography in recent years. Accordingly, the evaluation of backprojection methods for breast tomographic reconstruction is highlighted. After that, multi-slice fusion takes center stage, promising real-time insights into dynamic processes and advanced diagnosis. Computational efficiency, especially in methods for accelerating tomographic reconstruction algorithms on commodity PC graphics hardware, is also presented. In geophysics, a deep learning-based approach to ground-penetrating radar (GPR) data inversion propels us into the future of geological and environmental sciences. We venture into Earth sciences with global seismic tomography: the inverse problem and beyond, understanding the Earth’s subsurface through advanced inverse problem solutions and pushing boundaries. Lastly, optical coherence tomography is reviewed in basic applications for revealing tiny biological tissue structures. This review presents the main categories of applications of tomography, providing a deep insight into the methods and algorithms that have been developed so far so that the reader who wants to deal with the subject is fully informed.

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“…In addition, it is easy to realize miniaturized or micro-focus X-ray sources. Cold cathode X-ray sources have thus become a research hotspot in the field [ 5 , 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Achieving High Current Stability of Gated Carbon Nanotube Cold Cathode Electron Source Using IGBT Modulation for X-ray Source Application

et al. 2022

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The cold cathode X-ray source has potential application in the field of radiotherapy, which requires a stable dose. In this study, a gated carbon nanotube cold cathode electron gun with high current stability was developed by using Insulated Gate Bipolar Transistor (IGBT) modulation, and its application in X-ray source was explored. Carbon nanotube (CNTs) films were prepared directly on stainless steel substrate by chemical vapor deposition and assembled with control gate and focus electrodes to form an electron gun. A maximum cathode current of 200 μA and approximately 53% transmission rate was achieved. An IGBT was used to modulate and stabilize the cathode current. High stable cathode current with fluctuation less than 0.5% has been obtained for 50 min continuous operation. The electron gun was used in a transmission target X-ray source and a stable X-ray dose rate was obtained. Our study demonstrates the feasibility of achieving high current stability from a gated carbon nanotube cold cathode electron source using IGBT modulation for X-ray source application.

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Evaluation of Back Projection Methods for Breast Tomosynthesis Image Reconstruction

Cited by 6 publications

References 17 publications

Visual Quantitative Detection of Delamination Defects in GFRP via Microwave

Visual Quantitative Detection of Delamination Defects in GFRP via Microwave

Algorithms in Tomography and Related Inverse Problems—A Review

Achieving High Current Stability of Gated Carbon Nanotube Cold Cathode Electron Source Using IGBT Modulation for X-ray Source Application

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