Recent Advancements in Spectral CT Imaging Techniques

A special issue of Bioengineering (ISSN 2306-5354). This special issue belongs to the section "Biosignal Processing".

Deadline for manuscript submissions: 31 January 2025 | Viewed by 787

Special Issue Editor


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Guest Editor
Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
Interests: X-ray imaging; X-ray phase contrast imaging; dual-energy computerized tomography; photon counting CT; cone beam CT; image reconstruction; diagnostic radiography; mammography; deep learning (artificial intelligence); image denoising; iterative reconstruction; medical image processing

Special Issue Information

Dear Colleagues,

The Special Issue ‘Recent Advancements in Spectral CT Imaging Techniques’ seeks to provide an in-depth exploration of the emerging field of spectral computed tomography (CT) and its significant contributions to medical imaging. Spectral CT imaging utilizes multiple energy levels to capture detailed information about the attenuation properties of various tissue types. This novel imaging approach holds great promise in improving diagnostic accuracy, therapeutic assessment, and overall patient care.

This Special Issue invites researchers, scientists, and clinicians to present original research, comprehensive reviews, and insightful perspectives on a wide range of topics including, but not limited to, the following:

  • Novel spectral CT scanner designs and technologies;
  • Optimization of acquisition protocols and dose optimization techniques;
  • Image reconstruction algorithms and artifact reduction strategies;
  • Quantitative analysis methods for tissue characterization;
  • Applications of spectral CT in specific clinical domains (e.g., oncology, cardiology, and neurology);
  • Assessment of spectral CT for response evaluation in therapy and interventions;
  • Exploring the potential of spectral CT in guiding personalized medicine approaches.

By collating and disseminating research on the aforementioned topics, this Special Issue aims to foster collaboration among researchers and facilitate the integration of spectral CT into routine clinical practice, ultimately enhancing our understanding of disease processes, improving diagnostic accuracy, and promoting better patient outcomes.

Prof. Dr. Yongshuai Ge
Guest Editor

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Keywords

  • spectral CT
  • computed tomography
  • medical imaging
  • image reconstruction
  • diagnostic radiography
  • deep learning (artificial intelligence)
  • clinical applications
  • X-ray imaging
  • biological tissues
  • cancer
  • therapeutic assessment

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Published Papers (1 paper)

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16 pages, 5002 KiB  
Article
HEAL: High-Frequency Enhanced and Attention-Guided Learning Network for Sparse-View CT Reconstruction
by Guang Li, Zhenhao Deng, Yongshuai Ge and Shouhua Luo
Bioengineering 2024, 11(7), 646; https://doi.org/10.3390/bioengineering11070646 - 25 Jun 2024
Viewed by 531
Abstract
X-ray computed tomography (CT) imaging technology has become an indispensable diagnostic tool in clinical examination. However, it poses a risk of ionizing radiation, making the reduction of radiation dose one of the current research hotspots in CT imaging. Sparse-view imaging, as one of [...] Read more.
X-ray computed tomography (CT) imaging technology has become an indispensable diagnostic tool in clinical examination. However, it poses a risk of ionizing radiation, making the reduction of radiation dose one of the current research hotspots in CT imaging. Sparse-view imaging, as one of the main methods for reducing radiation dose, has made significant progress in recent years. In particular, sparse-view reconstruction methods based on deep learning have shown promising results. Nevertheless, efficiently recovering image details under ultra-sparse conditions remains a challenge. To address this challenge, this paper proposes a high-frequency enhanced and attention-guided learning Network (HEAL). HEAL includes three optimization strategies to achieve detail enhancement: Firstly, we introduce a dual-domain progressive enhancement module, which leverages fidelity constraints within each domain and consistency constraints across domains to effectively narrow the solution space. Secondly, we incorporate both channel and spatial attention mechanisms to improve the network’s feature-scaling process. Finally, we propose a high-frequency component enhancement regularization term that integrates residual learning with direction-weighted total variation, utilizing directional cues to effectively distinguish between noise and textures. The HEAL network is trained, validated and tested under different ultra-sparse configurations of 60 views and 30 views, demonstrating its advantages in reconstruction accuracy and detail enhancement. Full article
(This article belongs to the Special Issue Recent Advancements in Spectral CT Imaging Techniques)
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