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Cone-beam breast computed tomography (CT) provides true 3D breast images with isotropic resolution and high-contrast information, detecting calcifications as small as a few hundred microns and revealing subtle tissue differences. However,…

Medical Physics · Physics 2019-12-18 Wenxiang Cong , Hongming Shan , Xiaohua Zhang , Shaohua Liu , Ruola Ning , Ge Wang

Reducing scan times, radiation dose, and enhancing image quality for lower-performance scanners, are critical in low-dose PET imaging. Deep learning techniques have been investigated for PET image denoising. However, existing models have…

Low dose CT is of great interest in these days. Dose reduction raises noise level in projections and decrease image quality in reconstructions. Model based image reconstruction can combine statistical noise model together with prior…

Medical Physics · Physics 2019-10-16 Kaichao Liang , Li Zhang , Yirong Yang , HongKai Yang , Yuxiang Xing

This work aims to study the generalizability of a pre-developed deep learning (DL) dose prediction model for volumetric modulated arc therapy (VMAT) for prostate cancer and to adapt the model to three different internal treatment planning…

We propose a fast beam orientation selection method, based on deep neural networks (DNN), capable of developing a plan comparable to those by the state-of-the-art column generation method. The novelty of Our model lies in its supervised…

Medical Physics · Physics 2019-12-23 Azar Sadeghnejad Barkousaraie , Olalekan Ogunmolu , Steve Jiang , Dan Nguyen

The application of ionizing radiation for diagnostic imaging is common around the globe. However, the process of imaging, itself, remains to be a relatively hazardous operation. Therefore, it is preferable to use as low a dose of ionizing…

Image and Video Processing · Electrical Eng. & Systems 2023-11-01 A. Demir , M. M. A. Shames , O. N. Gerek , S. Ergin , M. Fidan , M. Koc , M. B. Gulmezoglu , A. Barkana , C. Calisir

Fast dose calculation is critical for online and real time adaptive therapy workflows. While modern physics-based dose algorithms must compromise accuracy to achieve low computation times, deep learning models can potentially perform dose…

Medical Physics · Physics 2023-07-19 Oscar Pastor-Serrano , Peng Dong , Charles Huang , Lei Xing , Zoltán Perkó

Medical imaging plays a vital role in modern diagnostics; however, interpreting high-resolution radiological data remains time-consuming and susceptible to variability among clinicians. Traditional image processing techniques often lack the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Melika Filvantorkaman , Maral Filvan Torkaman

Medical imaging is playing a more and more important role in clinics. However, there are several issues in different imaging modalities such as slow imaging speed in MRI, radiation injury in CT and PET. Therefore, accelerating MRI, reducing…

Computer Vision and Pattern Recognition · Computer Science 2019-09-06 Jing Cheng , Haifeng Wang , Yanjie Zhu , Qiegen Liu , Qiyang Zhang , Ting Su , Jianwei Chen , Yongshuai Ge , Zhanli Hu , Xin Liu , Hairong Zheng , Leslie Ying , Dong Liang

Purpose: Radiation therapy treatment planning is a trial-and-error, often time-consuming process. An optimal dose distribution based on a specific anatomy can be predicted by pre-trained deep learning (DL) models. However, dose…

Medical Physics · Physics 2021-09-15 Jianhui Ma , Dan Nguyen , Ti Bai , Michael Folkerts , Xun Jia , Weiguo Lu , Linghong Zhou , Steve Jiang

The treatment planning process for patients with head and neck (H&N) cancer is regarded as one of the most complicated due to large target volume, multiple prescription dose levels, and many radiation-sensitive critical structures near the…

Medical Physics · Physics 2019-03-27 Dan Nguyen , Xun Jia , David Sher , Mu-Han Lin , Zohaib Iqbal , Hui Liu , Steve Jiang

The DeepDoseNet 3D dose prediction model based on ResNet and Dilated DenseNet is proposed. The 340 head-and-neck datasets from the 2020 AAPM OpenKBP challenge were utilized, with 200 for training, 40 for validation, and 100 for testing.…

In this work, we propose a Machine Learning model that generates an adjustable 3D dose distribution for external beam radiation therapy for head-and-neck cancer treatments. In contrast to existing Machine Learning methods that provide a…

The idea of replacing hardware by software to compensate for scattered radiation in flat-panel X-ray imaging is well established in the literature. Recently, deep-learningbased image translation approaches, most notably the U-Net, have…

As PET imaging is accompanied by substantial radiation exposure and cancer risk, reducing radiation dose in PET scans is an important topic. Recently, diffusion models have emerged as the new state-of-the-art generative model to generate…

Image and Video Processing · Electrical Eng. & Systems 2023-11-30 Huidong Xie , Weijie Gan , Bo Zhou , Xiongchao Chen , Qiong Liu , Xueqi Guo , Liang Guo , Hongyu An , Ulugbek S. Kamilov , Ge Wang , Chi Liu

Typically, the current dose prediction models are limited to small amounts of data and require re-training for a specific site, often leading to suboptimal performance. We propose a site-agnostic, 3D dose distribution prediction model using…

Deep learning-based automated contouring and treatment planning has been proven to improve the efficiency and accuracy of radiotherapy. However, conventional radiotherapy treatment planning process has the automated contouring and treatment…

Medical Physics · Physics 2024-12-02 Sangwook Kim , Aly Khalifa , Thomas G. Purdie , Chris McIntosh

Purpose: This study aimed to use deep learning-based dose prediction to assess head and neck (HN) plan quality and identify suboptimal plans. Methods: A total of 245 VMAT HN plans were created using RapidPlan knowledge-based planning (KBP).…

Deep learning-based pose estimation algorithms can successfully estimate the pose of objects in an image, especially in the field of color images. 6D Object pose estimation based on deep learning models for X-ray images often use custom…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Christiaan G. A. Viviers , Joel de Bruijn , Lena Filatova , Peter H. N. de With , Fons van der Sommen

In this paper, we develop a deep learning (DL)-guided hybrid beam and power allocation approach for multiuser millimeter-wave (mmWave) networks, which facilitates swift beamforming at the base station (BS). The following persisting…

Signal Processing · Electrical Eng. & Systems 2023-05-24 Yuwen Cao , Tomoaki Ohtsuki , Setareh Maghsudi , Tony Q. S. Quek