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We propose a focusing method of intense midair ultrasound out of ultrasonic emission from a single flexurally vibrating square plate partially covered with a purposely designed amplitude mask. Many applications relying on nonlinear acoustic…

Applied Physics · Physics 2024-06-04 Keisuke Hasegawa , Masaya Fujimori , Masaya Takasaki

In this research work, a novel framework is pro- posed as an efficient successor to traditional imaging methods for breast cancer detection in order to decrease the computational complexity. In this framework, the breast is devided into…

Computer Vision and Pattern Recognition · Computer Science 2017-09-11 Yasaman Ettefagh , Mohammad Hossein Moghaddam , Saeed Vahidian

To date, endovascular surgeries are performed using the golden standard of Fluoroscopy, which uses ionising radiation to visualise catheters and vasculature. Prolonged Fluoroscopic exposure is harmful for the patient and the clinician, and…

Image and Video Processing · Electrical Eng. & Systems 2023-09-27 Alex Ranne , Yordanka Velikova , Nassir Navab , Ferdinando Rodriguez y Baena

The two-dimensional (2D) ultrasound imaging is widely used in several fields. In this study, the potential of two-dimensional ultrasound imaging technique based on machine learning is shown. A line transmitter was placed at one side and a…

Medical Physics · Physics 2020-04-21 Yoshiki Nagatani , Shigeaki Okumura , Shuqiong Wu , Tetsuya Matsuda

The rapid spread of COVID-19 and the emergence of new variants underscore the importance of effective screening measures. Rapid diagnosis and subsequent quarantine of infected individuals can prevent further spread of the virus in society.…

Image and Video Processing · Electrical Eng. & Systems 2023-11-06 Behzad Moayedi , Abdalsamad Keramatfar , Mohammad Hadi Goldani , Mohammad Javad Fallahi , Alborz Jahangirisisakht , Mohammad Saboori , Leyla badiei

This paper addresses the persistent challenge of accurately digitizing paper-based electrocardiogram (ECG) recordings, with a particular focus on robustly handling single leads compromised by signal overlaps-a common yet under-addressed…

Machine Learning · Computer Science 2025-06-13 Reza Karbasi , Masoud Rahimi , Abdol-Hossein Vahabie , Hadi Moradi

Automatic mammogram classification and mass segmentation play a critical role in a computer-aided mammogram screening system. In this work, we present a unified mammogram analysis framework for both whole-mammogram classification and…

Computer Vision and Pattern Recognition · Computer Science 2018-09-03 Rongzhao Zhang , Han Zhang , Albert C. S. Chung

This paper studies hybrid beamforming for active sensing applications, such as millimeter-wave or ultrasound imaging. Hybrid beamforming can substantially lower the cost and power consumption of fully digital sensor arrays by reducing the…

Signal Processing · Electrical Eng. & Systems 2020-12-30 Robin Rajamäki , Sundeep Prabhakar Chepuri , Visa Koivunen

Digital image plays a vital role in the early detection of cancers, such as prostate cancer, breast cancer, lungs cancer, cervical cancer. Ultrasound imaging method is also suitable for early detection of the abnormality of fetus. The…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Vidhi Rawat , Alok Jain , Vibhakar Shrimali

There is a growing interest in reconstructing the density matrix of photoelectron wavepackets, in particular in complex systems where decoherence can be introduced either by a partial measurement of the system or through coupling with a…

Digital radio arrays have become an effective tool to measure air showers at energies around and above 100 PeV. Compared to optical techniques, the radio technique is not restricted to clear nights. Thanks to recent progress on…

High Energy Astrophysical Phenomena · Physics 2022-04-28 Frank G. Schröder

Emerging sonography techniques often require increasing the number of transducer elements involved in the imaging process. Consequently, larger amounts of data must be acquired and processed. The significant growth in the amounts of data…

Information Theory · Computer Science 2015-06-04 Noam Wagner , Yonina C. Eldar , Zvi Friedman

This paper presents a novel deep learning approach for analyzing massive underwater acoustic data by leveraging a model trained on a broad spectrum of non-underwater (aerial) sounds. Recognizing the challenge in labeling vast amounts of…

Sound · Computer Science 2024-02-22 Jeongsoo Park , Dong-Gyun Han , Hyoung Sul La , Sangmin Lee , Yoonchang Han , Eun-Jin Yang

We propose a holographic microscopy method based on single-pixel imaging technology (HM-SPI). We used a holographic microscopy method based on in-line Gabor holography. In single-pixel imaging technology, cyclic binary masks and…

Optics · Physics 2025-04-11 Arthur G. Fedorov

Ultrafast electron diffraction (UED) instruments typically operate at kHz or lower repetition rates and rely on indirect detection of electrons. However, these experiments encounter limitations because they are required to use electron…

Chemical Physics · Physics 2024-08-06 Fernando Rodriguez Diaz , Mark Mero , Kasra Amini

Ultrahigh-field MRI, such as those operating at 7 Tesla, enhances diagnostic capabilities but also presents unique challenges, including the need for advanced RF coil designs to achieve an optimal signal-to-noise ratio and transmit…

Medical Physics · Physics 2025-02-11 Yunkun Zhao , Komlan Payne , Leslie Ying , Xiaoliang Zhang

Cardiac auscultation is an essential point-of-care method used for the early diagnosis of heart diseases. Automatic analysis of heart sounds for abnormality detection is faced with the challenges of additive noise and sensor-dependent…

Sound · Computer Science 2021-06-04 Farhat Binte Azam , Md. Istiaq Ansari , Ian Mclane , Taufiq Hasan

Audio fingerprinting, also named as audio hashing, has been well-known as a powerful technique to perform audio identification and synchronization. It basically involves two major steps: fingerprint (voice pattern) design and matching…

Sound · Computer Science 2015-02-25 Ngoc Q. K. Duong , Hien-Thanh Duong

A well-known diagnostic imaging modality, termed ultrasound tomography, was quickly developed for the detection of very small tumors whose sizes are smaller than the wavelength of the incident pressure wave without ionizing radiation,…

Medical Physics · Physics 2015-08-05 Tran Quang-Huy , Tran Duc-Tan , Huynh Huu Tue , Nguyen Linh-Trung

This paper presents a novel approach for enhancing the multiple sets of acoustic patterns automatically discovered from a given corpus. In a previous work it was proposed that different HMM configurations (number of states per model, number…

Computation and Language · Computer Science 2015-09-09 Cheng-Tao Chung , Wei-Ning Hsu , Cheng-Yi Lee , Lin-Shan Lee