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Cone-beam computed tomography (CBCT) is an important tool facilitating computer aided interventions, despite often suffering from artifacts that pose challenges for accurate interpretation. While the degraded image quality can affect…

Image and Video Processing · Electrical Eng. & Systems 2024-07-02 Maximilian E. Tschuchnig , Philipp Steininger , Michael Gadermayr

In orthodontic treatment, a full tooth model consisting of both the crown and root is indispensable in making the treatment plan. However, acquiring tooth root information to obtain the full tooth model from CBCT images is sometimes…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Yuezhi Yang , Zhiming Cui , Changjian Li , Wenping Wang

In post-operative radiotherapy for prostate cancer, the cancerous prostate gland has been surgically removed, so the clinical target volume (CTV) to be irradiated encompasses the microscopic spread of tumor cells, which cannot be visualized…

Tooth segmentation in Cone-Beam Computed Tomography (CBCT) remains challenging, especially for fine structures like root apices, which is critical for assessing root resorption in orthodontics. We introduce GEPAR3D, a novel approach that…

Tooth point cloud segmentation is a fundamental task in many orthodontic applications. Current research mainly focuses on fully supervised learning which demands expensive and tedious manual point-wise annotation. Although recent…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Yifan Liu , Wuyang Li , Cheng Wang , Hui Chen , Yixuan Yuan

Accurate segmentation of mandibular canals in lower jaws is important in dental implantology. Medical experts determine the implant position and dimensions manually from 3D CT images to avoid damaging the mandibular nerve inside the canal.…

Image and Video Processing · Electrical Eng. & Systems 2022-11-03 Azka Rehman , Muhammad Usman , Rabeea Jawaid , Amal Muhammad Saleem , Shi Sub Byon , Sung Hyun Kim , Byoung Dai Lee , Byung il Lee , Yeong Gil Shin

This study presents the first report on the development of an artificial intelligence (AI) for automatic region segmentation of four-dimensional computer tomography (4D-CT) images during swallowing. The material consists of 4D-CT images…

Image and Video Processing · Electrical Eng. & Systems 2025-01-31 Yukihiro Michiwaki , Takahiro Kikuchi , Takashi Ijiri , Yoko Inamoto , Hiroshi Moriya , Takumi Ogawa , Ryota Nakatani , Yuto Masaki , Yoshito Otake , Yoshinobu Sato

Computed tomography (CT) is extensively used for accurate visualization and segmentation of organs and lesions. While deep learning models such as convolutional neural networks (CNNs) and vision transformers (ViTs) have significantly…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Yuheng Li , Yuxiang Lai , Maria Thor , Deborah Marshall , Zachary Buchwald , David S. Yu , Xiaofeng Yang

We present a deep learning segmentation model that can automatically and robustly segment all major anatomical structures in body CT images. In this retrospective study, 1204 CT examinations (from the years 2012, 2016, and 2020) were used…

The cone beam computed tomography (CBCT) technique was first inserted in dental imaging 15 years ago. Due to this technique 3D imaging in dentistry has been excessively changed. The purpose beyond using CBCT instead of computed tomography…

Medical Physics · Physics 2018-12-11 Kaspar Höschel , Janos Juhasz

Medical imaging is vital in computer assisted intervention. Particularly cone beam computed tomography (CBCT) with defacto real time and mobility capabilities plays an important role. However, CBCT images often suffer from artifacts, which…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Maximilian E. Tschuchnig , Philipp Steininger , Michael Gadermayr

This study attempts to segment teeth and root-canals simultaneously from CBCT images, but there are very challenging problems in this process. First, the clinical CBCT image data is very large (e.g., 672 *688 * 688), and the use of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Shangxuan Li , Yu Du , Li Ye , Chichi Li , Yanshu Fang , Cheng Wang , Wu Zhou

Low-dose dental cone beam computed tomography (CBCT) has been increasingly used for maxillofacial modeling. However, the presence of metallic inserts, such as implants, crowns, and dental filling, causes severe streaking and shading…

Image and Video Processing · Electrical Eng. & Systems 2022-02-09 Chang Min Hyun , Taigyntuya Bayaraa , Hye Sun Yun , Tae Jun Jang , Hyoung Suk Park , Jin Keun Seo

Convolutional Neural Networks (CNNs) have been recently employed to solve problems from both the computer vision and medical image analysis fields. Despite their popularity, most approaches are only able to process 2D images while most…

Computer Vision and Pattern Recognition · Computer Science 2016-06-16 Fausto Milletari , Nassir Navab , Seyed-Ahmad Ahmadi

Automatic segmentation of tumor lesions is a critical initial processing step for quantitative PET/CT analysis. However, numerous tumor lesion with different shapes, sizes, and uptake intensity may be distributed in different anatomical…

Image and Video Processing · Electrical Eng. & Systems 2022-09-07 Shaonan Zhong , Junyang Mo , Zhantao Liu

Deep learning has demonstrated remarkable success in medical image segmentation and computer-aided diagnosis. In particular, numerous advanced methods have achieved state-of-the-art performance in brain tumor segmentation from MRI scans.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Xiaoyu Shi , Rahul Kumar Jain , Yinhao Li , Ruibo Hou , Jingliang Cheng , Jie Bai , Guohua Zhao , Lanfen Lin , Rui Xu , Yen-wei Chen

Optical Intra-oral Scanners (IOS) are widely used in digital dentistry, providing 3-Dimensional (3D) and high-resolution geometrical information of dental crowns and the gingiva. Accurate 3D tooth segmentation, which aims to precisely…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Huimin Xiong , Kunle Li , Kaiyuan Tan , Yang Feng , Joey Tianyi Zhou , Jin Hao , Zuozhu Liu

In this article, we present a new unique dataset for dental research - AlphaDent. This dataset is based on the DSLR camera photographs of the teeth of 295 patients and contains over 1200 images. The dataset is labeled for solving the…

Cone-Beam Computed Tomography (CBCT) and Intraoral Scanning (IOS) are essential for digital dentistry, but annotated data scarcity limits automated solutions for pulp canal segmentation and cross-modal registration. To benchmark…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Yaqi Wang , Zhi Li , Chengyu Wu , Jun Liu , Yifan Zhang , Jialuo Chen , Jiaxue Ni , Qian Luo , Jin Liu , Can Han , Changkai Ji , Zhi Qin Tan , Ajo Babu George , Liangyu Chen , Qianni Zhang , Dahong Qian , Shuai Wang , Huiyu Zhou

Tooth image segmentation is a cornerstone of dental digitization. However, traditional image encoders relying on fixed-resolution feature maps often lead to discontinuous segmentation and poor discrimination between target regions and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Xinxin Zhao , Jian Jiang , Yan Tian , Liqin Wu , Zhaocheng Xu , Teddy Yang , Yunuo Zou , Xun Wang