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The use of computed tomography (CT) imaging has become of increasing interest to academic areas outside of the field of medical imaging and industrial inspection, e.g., to biology and cultural heritage research. The pecularities of these…

Image and Video Processing · Electrical Eng. & Systems 2020-11-16 Florian Schiffers , Thomas Bochynek , Andre Aichert , Tobias Würfl , Michael Rubenstein , Oliver Cossairt

While micro-CT systems are instrumental in preclinical research, clinical micro-CT imaging has long been desired with cochlear implantation as a primary example. The structural details of the cochlear implant and the temporal bone require a…

We propose a cascaded 3D diffusion model framework to synthesize high-fidelity 3D PET/CT volumes directly from demographic variables, addressing the growing need for realistic digital twins in oncologic imaging, virtual trials, and…

Image and Video Processing · Electrical Eng. & Systems 2025-05-29 Siyeop Yoon , Sifan Song , Pengfei Jin , Matthew Tivnan , Yujin Oh , Sekeun Kim , Dufan Wu , Xiang Li , Quanzheng Li

X-ray imaging is a rapid and cost-effective tool for visualizing internal human anatomy. While multi-view X-ray imaging provides complementary information that enhances diagnosis, intervention, and education, acquiring images from multiple…

Image and Video Processing · Electrical Eng. & Systems 2025-10-21 Chun Xie , Yuichi Yoshii , Itaru Kitahara

Cephalometric landmark detection is essential for orthodontic diagnostics and treatment planning. Nevertheless, the scarcity of samples in data collection and the extensive effort required for manual annotation have significantly impeded…

Computer Vision and Pattern Recognition · Computer Science 2025-05-12 Dongqian Guo , Wencheng Han , Pang Lyu , Yuxi Zhou , Jianbing Shen

Computed Tomography (CT) imaging is one of the most influential diagnostic methods. In clinical reconstruction, an effective energy is used instead of total X-ray spectrum. This approximation causes an accuracy decline. To increase the…

Emerging Technologies · Computer Science 2018-07-25 Neda Gholami , Mohammad Mahdi Dehshibi , Mahmood Fazlali , Antonio Rueda-Toicen , Hector Zenil , Andrew Adamatzky

Carbon ion beam radiotherapy enables a very localised dose deposition. However, already small changes in the patient geometry or positioning errors can significantly distort the dose distribution. A live monitoring system of the beam…

Radiation therapy (RT) requires precise dose delivery over multiple fractions, with CT fundamental for treatment planning due to its electron density information. Repeated CT acquisitions impose radiation exposure and logistical burdens,…

Cone-beam tomography enables rapid 3D acquisitions, making it a suitable imaging modality for dental imaging. However, as with all X-ray techniques, the main challenge is to reduce the dose while maintaining good image quality. Moreover,…

Signal Processing · Electrical Eng. & Systems 2024-12-24 Louise Friot--Giroux , Françoise Peyrin , Voichiţa Maxim

Purpose: Cone-beam CT (CBCT) plays an important role in image guided radiation therapy (IGRT). However, the large radiation dose from serial CBCT scans in most IGRT procedures raises a clinical concern, especially for pediatric patients who…

Medical Physics · Physics 2015-05-18 Xun Jia , Yifei Lou , Ruijiang Li , William Y. Song , Steve B. Jiang

We propose a learning-based approach for novel view synthesis for multi-camera 360$^{\circ}$ panorama capture rigs. Previous work constructs RGBD panoramas from such data, allowing for view synthesis with small amounts of translation, but…

Computer Vision and Pattern Recognition · Computer Science 2020-08-06 Kai-En Lin , Zexiang Xu , Ben Mildenhall , Pratul P. Srinivasan , Yannick Hold-Geoffroy , Stephen DiVerdi , Qi Sun , Kalyan Sunkavalli , Ravi Ramamoorthi

Computed Tomography (CT) using synchrotron radiation is a powerful technique that, compared to lab-CT techniques, boosts high spatial and temporal resolution while also providing access to a range of contrast-formation mechanisms. The…

Image and Video Processing · Electrical Eng. & Systems 2025-01-20 Jiayang Shi , Daniel M. Pelt , K. Joost Batenburg

Accurate MRI-to-CT translation promises the integration of complementary imaging information without the need for additional imaging sessions. Given the practical challenges associated with acquiring paired MRI and CT scans, the development…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Teng Zhou , Jax Luo , Yuping Sun , Yiheng Tan , Shun Yao , Nazim Haouchine , Scott Raymond

For conventional computed tomography (CT) image reconstruction tasks, the most popular method is the so-called filtered-back-projection (FBP) algorithm. In it, the acquired Radon projections are usually filtered first by a ramp kernel…

Medical Physics · Physics 2018-07-06 Yongshuai Ge , Qiyang Zhang , Zhanli Hu , Jianwei Chen , Wei Shi , Hairong Zheng , Dong Liang

Learning depth from spherical panoramas is becoming a popular research topic because a panorama has a full field-of-view of the environment and provides a relatively complete description of a scene. However, applying well-studied CNNs for…

Computer Vision and Pattern Recognition · Computer Science 2021-05-28 Hualie Jiang , Zhe Sheng , Siyu Zhu , Zilong Dong , Rui Huang

Existing panoramic depth estimation methods based on convolutional neural networks (CNNs) focus on removing panoramic distortions, failing to perceive panoramic structures efficiently due to the fixed receptive field in CNNs. This paper…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Zhijie Shen , Chunyu Lin , Kang Liao , Lang Nie , Zishuo Zheng , Yao Zhao

Computed tomography (CT) is an effective medical imaging modality, widely used in the field of clinical medicine for the diagnosis of various pathologies. Advances in Multidetector CT imaging technology have enabled additional…

Image and Video Processing · Electrical Eng. & Systems 2022-04-11 Abril Corona-Figueroa , Jonathan Frawley , Sam Bond-Taylor , Sarath Bethapudi , Hubert P. H. Shum , Chris G. Willcocks

Computed tomography (CT) has become an essential part of modern science and medicine. A CT scanner consists of an X-ray source that is spun around an object of interest. On the opposite end of the X-ray source, a detector captures X-rays…

Image and Video Processing · Electrical Eng. & Systems 2023-09-14 Thomas Germer , Jan Robine , Sebastian Konietzny , Stefan Harmeling , Tobias Uelwer

Metal objects pose a significant challenge in cone-beam computed tomography, as their strong and energy-dependent X-ray attenuation leads to inconsistent projections and severe streaking and shading artifacts in reconstructed images. These…

This study introduces a novel reconstruction method for dental cone-beam computed tomography (CBCT), focusing on effectively reducing metal-induced artifacts commonly encountered in the presence of prevalent metallic implants. Despite…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Hyoung Suk Park , Kiwan Jeon , Jin Keun Seo