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With the increasing popularity of PET-MR scanners in clinical applications, synthesis of CT images from MR has been an important research topic. Accurate PET image reconstruction requires attenuation correction, which is based on the…

Computer Vision and Pattern Recognition · Computer Science 2018-07-31 Snehashis Roy , John A. Butman , Dzung L. Pham

Attenuation correction is an essential requirement of positron emission tomography (PET) image reconstruction to allow for accurate quantification. However, attenuation correction is particularly challenging for PET-MRI as neither PET nor…

Accurate synthesis of computed tomography (CT) images from magnetic resonance imaging (MRI) is clinically valuable for cranial applications such as attenuation correction, radiotherapy planning, and image-guided interventions. However,…

Image and Video Processing · Electrical Eng. & Systems 2026-05-05 Zhuoyao Xin , Yiren Zhang , Christopher Wu , Dong Liu , Chunming Gu , Elena Greco , Erik H. Middlebrooks , Jun Hua , Jia Guo

Synthetic CT image generation from MRI scan is necessary to create radiotherapy plans without the need of co-registered MRI and CT scans. The chosen baseline adversarial model with cycle consistency permits unpaired image-to-image…

Image and Video Processing · Electrical Eng. & Systems 2023-08-16 Denis Prokopenko , Joël Valentin Stadelmann , Heinrich Schulz , Steffen Renisch , Dmitry V. Dylov

MR imaging will play a very important role in radiotherapy treatment planning for segmentation of tumor volumes and organs. However, the use of MR-based radiotherapy is limited because of the high cost and the increased use of metal…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Cheng-Bin Jin , Hakil Kim , Wonmo Jung , Seongsu Joo , Ensik Park , Ahn Young Saem , In Ho Han , Jae Il Lee , Xuenan Cui

Purpose: To assess the feasibility of deep learning-based high resolution synthetic CT generation from MRI scans of the lower arm for orthopedic applications. Methods: A conditional Generative Adversarial Network was trained to synthesize…

Computer Vision and Pattern Recognition · Computer Science 2019-01-25 Frank Zijlstra , Koen Willemsen , Mateusz C. Florkow , Ralph J. B. Sakkers , Harrie H. Weinans , Bart C. H. van der Wal , Marijn van Stralen , Peter R. Seevinck

Computed tomography (CT) is critical for various clinical applications, e.g., radiotherapy treatment planning and also PET attenuation correction. However, CT exposes radiation during acquisition, which may cause side effects to patients.…

Computer Vision and Pattern Recognition · Computer Science 2016-12-19 Dong Nie , Roger Trullo , Caroline Petitjean , Su Ruan , Dinggang Shen

MR-only radiotherapy treatment planning requires accurate MR-to-CT synthesis. Current deep learning methods for MR-to-CT synthesis depend on pairwise aligned MR and CT training images of the same patient. However, misalignment between…

Computer Vision and Pattern Recognition · Computer Science 2017-08-04 Jelmer M. Wolterink , Anna M. Dinkla , Mark H. F. Savenije , Peter R. Seevinck , Cornelis A. T. van den Berg , Ivana Isgum

In the field of radiotherapy, accurate imaging and image registration are of utmost importance for precise treatment planning. Magnetic Resonance Imaging (MRI) offers detailed imaging without being invasive and excels in soft-tissue…

Image and Video Processing · Electrical Eng. & Systems 2023-11-29 Saba Nikbakhsh , Lachin Naghashyar , Morteza Valizadeh , Mehdi Chehel Amirani

This paper strives to generate a synthetic computed tomography (CT) image from a magnetic resonance (MR) image. The synthetic CT image is valuable for radiotherapy planning when only an MR image is available. Recent approaches have made…

Image and Video Processing · Electrical Eng. & Systems 2021-07-20 Zenglin Shi , Pascal Mettes , Guoyan Zheng , Cees Snoek

Deep learning techniques, particularly convolutional neural networks (CNNs), have gained traction for synthetic computed tomography (sCT) generation from Magnetic resonance imaging (MRI), Cone-beam computed tomography (CBCT) and PET. In…

Image and Video Processing · Electrical Eng. & Systems 2023-08-29 Satoshi Kondo , Satoshi Kasai , Kousuke Hirasawa

Image registration plays an important role in comparing images. It is particularly important in analyzing medical images like CT, MRI, PET, etc. to quantify different biological samples, to monitor disease progression and to fuse different…

Computer Vision and Pattern Recognition · Computer Science 2018-10-22 Abdullah Nazib , Clinton Fookes , Dimitri Perrin

Deep-learning-based MR-to-CT synthesis can estimate the electron density of tissues, thereby facilitating PET attenuation correction in whole-body PET/MR imaging. However, whole-body MR-to-CT synthesis faces several challenges including the…

Image and Video Processing · Electrical Eng. & Systems 2024-11-27 Jiaxu Zheng , Zhenrong Shen , Lichi Zhang , Qun Chen

Computer-Assisted Interventions enable clinicians to perform precise, minimally invasive procedures, often relying on advanced imaging methods. Cone-beam computed tomography (CBCT) can be used to facilitate computer-assisted interventions,…

Image and Video Processing · Electrical Eng. & Systems 2024-12-04 Maximilian E. Tschuchnig , Philipp Steininger , Michael Gadermayr

AI requires extensive datasets, while medical data is subject to high data protection. Anonymization is essential, but poses a challenge for some regions, such as the head, as identifying structures overlap with regions of clinical…

While medical image segmentation is an important task for computer aided diagnosis, the high expertise requirement for pixelwise manual annotations makes it a challenging and time consuming task. Since conventional data augmentations do not…

Image and Video Processing · Electrical Eng. & Systems 2021-06-21 Dwarikanath Mahapatra , Ankur Singh

Personalized computed tomography (CT) dosimetry has great potential in assessing patient-specific radiation exposure, supporting risk assessment, and optimizing clinical protocols. The aim of this study is to evaluate the potential of…

Medical Physics · Physics 2026-01-15 Marie-Luise Kuhlmann , Jörg Martin , Stefan Pojtinger

This review paper delves into the present state of medical imaging, with a specific focus on the use of deep learning techniques for brain image synthesis. The need for medical image synthesis to improve diagnostic accuracy and decrease…

Image and Video Processing · Electrical Eng. & Systems 2023-09-20 Shubham Singh , Ammar Ranapurwala , Mrunal Bewoor , Sheetal Patil , Satyam Rai

Cross modal image syntheses is gaining significant interests for its ability to estimate target images of a different modality from a given set of source images,like estimating MR to MR, MR to CT, CT to PET etc, without the need for an…

Computer Vision and Pattern Recognition · Computer Science 2018-07-02 Deepa Gunashekar , Sailesh Conjeti , Abhijit Guha Roy , Nassir Navab , Kuangyu Shi

Recently, more and more attention is drawn to the field of medical image synthesis across modalities. Among them, the synthesis of computed tomography (CT) image from T1-weighted magnetic resonance (MR) image is of great importance,…

Computer Vision and Pattern Recognition · Computer Science 2017-11-10 Lei Xiang , Qian Wang , Xiyao Jin , Dong Nie , Yu Qiao , Dinggang Shen
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