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Radiotherapy is one of the primary treatment methods for tumors, but the organ movement caused by respiration limits its accuracy. Recently, 3D imaging from a single X-ray projection has received extensive attention as a promising approach…

Image and Video Processing · Electrical Eng. & Systems 2024-04-01 Miao Zhu , Qiming Fu , Bo Liu , Mengxi Zhang , Bojian Li , Xiaoyan Luo , Fugen Zhou

One-shot segmentation of brain tissue requires training registration-segmentation (reg-seg) dual-model iteratively, where reg-model aims to provide pseudo masks of unlabeled images for seg-model by warping a carefully-labeled atlas.…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Zhiwei Wang , Xiaoyu Zeng , Chongwei Wu , Jinxin lv , Xu Zhang , Wei Fang , Qiang Li

A central limitation of multiple-acquisition magnetic resonance imaging (MRI) is the degradation in scan efficiency as the number of distinct datasets grows. Sparse recovery techniques can alleviate this limitation via randomly undersampled…

Image and Video Processing · Electrical Eng. & Systems 2017-10-03 L Kerem Senel , Toygan Kilic , Alper Gungor , Emre Kopanoglu , H Emre Guven , Emine U Saritas , Aykut Koc , Tolga Cukur

Sparse-view computed tomography (CT) is known as a widely used approach to reduce radiation dose while accelerating imaging through lowered projection views and correlated calculations. However, its severe imaging noise and streaking…

Image and Video Processing · Electrical Eng. & Systems 2021-01-20 Yitong Liu , Ken Deng , Chang Sun , Hongwen Yang

Precise identification of spinal nerve rootlets is relevant to delineate spinal levels for the study of functional activity in the spinal cord. The goal of this study was to develop an automatic method for the semantic segmentation of…

Computer Vision and Pattern Recognition · Computer Science 2024-07-26 Jan Valosek , Theo Mathieu , Raphaelle Schlienger , Olivia S. Kowalczyk , Julien Cohen-Adad

Spiral acquisitions are preferred in real-time MRI because of their efficiency, which has made it possible to capture vocal tract dynamics during natural speech. A fundamental limitation of spirals is blurring and signal loss due to…

Image and Video Processing · Electrical Eng. & Systems 2021-02-16 Yongwan Lim , Shrikanth S. Narayanan , Krishna S. Nayak

Purpose: To propose a B1+ mapping technique for imaging of body parts containing metal hardware, based on magnitude images acquired with turbo spin echo (TSE) pulse sequences. Theory and Methods: To encode the underlying B1+, multiple (two…

Medical Physics · Physics 2025-01-13 Iman Khodarahmi , Mary Bruno , Ran Schwarzkopf , Jan Fritz , Mahesh B. Keerthivasan

Automatic tumor segmentation of breast ultrasound (BUS) image is quite challenging due to the complicated anatomic structure of breast and poor image quality. Most tumor segmentation approaches achieve good performance on BUS images…

Computer Vision and Pattern Recognition · Computer Science 2018-06-29 Fei Xu , Min Xian , Yingtao Zhang , Kuan Huang , H. D. Cheng , Boyu Zhang , Jianrui Ding , Chunping Ning , Ying Wang

PURPOSE: Interactive cardiac magnetic resonance imaging is used for fast scan planning and MR guided interventions. However, the requirement for real-time acquisition and near real-time visualization constrains the achievable…

Computer Vision and Pattern Recognition · Computer Science 2024-09-01 Olivier Jaubert , Javier Montalt-Tordera , Daniel Knight , Pr. Simon Arridge , Jennifer Steeden , Pr. Vivek Muthurangu

Multi-view neural surface reconstruction has exhibited impressive results. However, a notable limitation is the prohibitively slow inference time when compared to traditional techniques, primarily attributed to the dense sampling, required…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Chaerin Min , Sehyun Cha , Changhee Won , Jongwoo Lim

Common target sound extraction (TSE) approaches primarily relied on discriminative approaches in order to separate the target sound while minimizing interference from the unwanted sources, with varying success in separating the target from…

Audio and Speech Processing · Electrical Eng. & Systems 2023-10-11 Jiarui Hai , Helin Wang , Dongchao Yang , Karan Thakkar , Najim Dehak , Mounya Elhilali

Motivation: Serial section microscopy is an established method for detailed anatomy reconstruction of biological specimen. During the last decade, high resolution electron microscopy (EM) of serial sections has become the de-facto standard…

Computer Vision and Pattern Recognition · Computer Science 2016-06-20 Philipp Hanslovsky , John A. Bogovic , Stephan Saalfeld

Purpose To alleviate the spatial encoding limitations of single-shot EPI by developing multi-shot segmented EPI for ultra-high-resolution fMRI with reduced ghosting artifacts from subject motion and respiration. Methods Segmented EPI can…

In fetal-brain MRI, head-pose changes between prescription and acquisition present a challenge to obtaining the standard sagittal, coronal and axial views essential to clinical assessment. As motion limits acquisitions to thick slices that…

Fast spin-echo (FSE) pulse sequences for Magnetic Resonance Imaging (MRI) offer important imaging contrast in clinically feasible scan times. T2-shuffling is widely used to resolve temporal signal dynamics in FSE acquisitions by exploiting…

Image and Video Processing · Electrical Eng. & Systems 2023-03-07 Molin Zhang , Junshen Xu , Yamin Arefeen , Elfar Adalsteinsson

Target Speech Extraction (TSE) aims to isolate a target speaker's voice from a mixture of multiple speakers by leveraging speaker-specific cues, typically provided as auxiliary audio (a.k.a. cue audio). Although recent advancements in TSE…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-09 Helin Wang , Jiarui Hai , Dongchao Yang , Chen Chen , Kai Li , Junyi Peng , Thomas Thebaud , Laureano Moro Velazquez , Jesus Villalba , Najim Dehak

Single-shot terahertz (THz) spectroscopy probes sub-picosecond, non-repetitive events by combining the advantages of laser absorption techniques with the phase-sensitive detection of interferometric methods. However, its usage as a…

Optics · Physics 2025-01-07 Charan R. Nallapareddy , Thomas C. Underwood

Probabilistic evaluation improves the trade-off between target coverage and OAR sparing in IMPT but remains computationally demanding. This study proposes sparse probabilistic evaluation (SPE), a computationally efficient approach…

Medical image segmentation has become an essential technique in clinical and research-oriented applications. Because manual segmentation methods are tedious, and fully automatic segmentation lacks the flexibility of human intervention or…

Image and Video Processing · Electrical Eng. & Systems 2019-04-24 Kevin Karsch , Qing He , Ye Duan

This paper aims to achieve single-channel target speech extraction (TSE) in enclosures utilizing distance clues and room information. Recent works have verified the feasibility of distance clues for the TSE task, which can imply the sound…

Audio and Speech Processing · Electrical Eng. & Systems 2025-05-21 Runwu Shi , Zirui Lin , Benjamin Yen , Jiang Wang , Ragib Amin Nihal , Kazuhiro Nakadai