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Objective. This study investigates the best achievable performance of a brain-dedicated PET system with high resolution and sensitivity by evaluating different detector configurations, while maintaining a practical system design suitable…

Medical Physics · Physics 2026-02-26 Yuemeng Feng , Lisa Blackberg , Arkadiusz Sitek , Hamid Sabet

Object Detection has been a significant topic in computer vision. As the continuous development of Deep Learning, many advanced academic and industrial outcomes are established on localising and classifying the target objects, such as…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Yingwei Zhou

Objective: Positron Emission Tomography (PET) has been a commonly used imaging modality in broad clinical applications. One of the most important tradeoffs in PET imaging is between image quality and radiation dose: high image quality comes…

Image and Video Processing · Electrical Eng. & Systems 2024-04-18 Shaoyan Pan , Elham Abouei , Junbo Peng , Joshua Qian , Jacob F Wynne , Tonghe Wang , Chih-Wei Chang , Justin Roper , Jonathon A Nye , Hui Mao , Xiaofeng Yang

Focused ultrasound (FUS) therapy is a promising tool for optimally targeted treatment of spinal cord injuries (SCI), offering submillimeter precision to enhance blood flow at injury sites while minimizing impact on surrounding tissues.…

Medical Physics · Physics 2024-12-23 Avisha Kumar , Xuzhe Zhi , Zan Ahmad , Minglang Yin , Amir Manbachi

Background: Recently, the popularity of dual-layer flat-panel detector (DL-FPD) based dual-energy cone-beam CT (DE-CBCT) imaging has been increasing. However, the image quality of DE-CBCT remains constrained by the Compton scattered X-ray…

Positron range (PR) limits spatial resolution and quantitative accuracy in PET imaging, particularly for high-energy positron-emitting radionuclides like 68Ga. We propose a deep learning method using 3D residual encoder-decoder…

This article presents a physics-informed deep learning method for the quantitative estimation of the spatial coordinates of gamma interactions within a monolithic scintillator, with a focus on Positron Emission Tomography (PET) imaging. A…

Automotive radars have an important role in autonomous driving systems. The main challenge in automotive radar detection is the radar's wide point spread function (PSF) in the angular domain that causes blurriness and clutter in the radar…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Yuval Haitman , Oded Bialer

Deep learning-based reconstruction of positron emission tomography(PET) data has gained increasing attention in recent years. While these methods achieve fast reconstruction,concerns remain regarding quantitative accuracy and the presence…

Recently, deep learning (DL)-based methods for the generation of synthetic computed tomography (sCT) have received significant research attention as an alternative to classical ones. We present here a systematic review of these methods by…

Medical Physics · Physics 2021-08-30 Maria Francesca Spadea , Matteo Maspero , Paolo Zaffino , Joao Seco

To accurately quantify in vivo radiotracer uptake using Positron Emission Tomography (PET) is a challenging task due to low signal-to-noise ratio (SNR) and poor spatial resolution of PET camera along with the finite image sampling…

Image and Video Processing · Electrical Eng. & Systems 2020-06-03 Mahbubunnabi Tamal

Light-field microscopy (LFM) enables rapid volumetric imaging through single-frame acquisition and fast 3D reconstruction algorithms. The high speed and low phototoxicity of LFM make it highly suitable for real-time 3D fluorescence imaging,…

Optics · Physics 2025-02-24 Bohan Qu , Zhouyu Jin , You Zhou , Bo Xiong , Xun Cao

Automatic segmentation of medical images with DL algorithms has proven to be highly successful. With most of these algorithms, inter-observer variation is an acknowledged problem, leading to sub-optimal results. This problem is even more…

Computer Vision and Pattern Recognition · Computer Science 2021-02-17 Anjali Balagopal , Howard Morgan , Michael Dohopoloski , Ramsey Timmerman , Jie Shan , Daniel F. Heitjan , Wei Liu , Dan Nguyen , Raquibul Hannan , Aurelie Garant , Neil Desai , Steve Jiang

[$^{18}$F]fluorodeoxyglucose (FDG) positron emission tomography (PET) has emerged as a crucial tool in identifying the epileptic focus, especially in cases where magnetic resonance imaging (MRI) diagnosis yields indeterminate results. FDG…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Wentao Chen , Jiwei Li , Xichen Xu , Hui Huang , Siyu Yuan , Miao Zhang , Tianming Xu , Jie Luo , Weimin Zhou

Convolutional neural networks (CNNs) and transfer learning have recently been used for 6 degrees of freedom (6-DoF) camera pose estimation. While they do not reach the same accuracy as visual SLAM-based approaches and are restricted to a…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Soroush Seifi , Tinne Tuytelaars

We propose a new modeling approach for scatter estimation and descattering in polyenergetic X-ray computed tomography (CT) based on fitting models to local neighborhoods of a training set. X-ray CT is widely used in medical and industrial…

Image and Video Processing · Electrical Eng. & Systems 2021-09-30 Michael T. McCann , Marc L. Klasky , Jennifer L. Schei , Saiprasad Ravishankar

Recently, synthetic aperture radar (SAR) image change detection has become an interesting yet challenging direction due to the presence of speckle noise. Although both traditional and modern learning-driven methods attempted to overcome…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Gong Chen , Yanan Zhao , Yi Wang , Kim-Hui Yap

Deep learning-based positron emission tomography (PET) image denoising offers the potential to reduce radiation exposure and scanning time by transforming low-count images into high-count equivalents. However, existing methods typically…

Image and Video Processing · Electrical Eng. & Systems 2025-03-06 Menghua Xia , Huidong Xie , Qiong Liu , Bo Zhou , Hanzhong Wang , Biao Li , Axel Rominger , Quanzheng Li , Ramsey D. Badawi , Kuangyu Shi , Georges El Fakhri , Chi Liu

Positron Emission Tomography (PET) is a functional imaging modality widely used in neuroscience studies. To obtain meaningful quantitative results from PET images, attenuation correction is necessary during image reconstruction. For PET/MR…

Medical Physics · Physics 2018-08-01 Kuang Gong , Jaewon Yang , Kyungsang Kim , Georges El Fakhri , Youngho Seo , Quanzheng Li

Long-axial field-of-view (LAFOV) PET/CT has the potential to redefine the role of molecular imaging in theranostics by making multiparametric whole-body (MPWB) imaging and predictive dosimetry more clinically feasible. Compared to…