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Showing 1-25 of 48,260 resultsfor "Index Terms":Image Plane
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Two-step learning based super resolution and its application to 3D medical volumes
2015 IEEE 4th Global Conference on Consumer Electronics (GCCE)
Year: 2015 | Conference Paper |
Cited by: Papers (1)
In medical diagnosis, high resolution (HR) images are indispensable for giving more correct decision. The super resolution technique, which can generate HR images from LR images based on machine learning, attracts hot attention recently. However, the conventional learning based SR generally cannot recover high frequency information. In this paper, we integrate a further learning step into the conv...Show More
Comprehensive Comparison of Image Quality Aspects Between Conventional and Plane-Wave Imaging Methods on a Commercial Scanner
Gijs A. G. M. Hendriks;Gert Weijers;Chuan Chen;Madeleine Hertel;Chi-Yin Lee;Peter M. Dueppenbecker;Marcus Radicke;Andy Milkowski;Hendrik H. G. Hansen;Chris L. de Korte
Coherent plane-wave compound imaging (CPWCI) is used as alternative for conventional focused imaging (CFI) to increase frame rates linearly with the ratio number of imaging lines to steering angles. In this study, the image quality was compared between CPWCI and CFI, and the effect of steering angles (range and number) and beamforming strategies was evaluated in CPWCI. In automated breast volume s...Show More
Improving Image Quality for Single-Angle Plane Wave Ultrasound Imaging With Convolutional Neural Network Beamformer
Ultrafast ultrasound imaging based on plane wave (PW) compounding has been proposed for use in various clinical and preclinical applications, including shear wave imaging and super resolution blood flow imaging. Because the image quality afforded by PW imaging is highly dependent on the number of PW angles used for compounding, a tradeoff between image quality and frame rate occurs. In the present...Show More
Progress in Multimodality Imaging: Truly Simultaneous Ultrasound and Magnetic Resonance Imaging
Multimodality medical imaging takes advantage of the strengths of different imaging modalities to provide a more complete picture of the anatomy under investigation. Many complementary modalities have been combined to form such systems and some are gaining use clinically. One combination that has not been developed, in large part due to technical difficulties, is a combined magnetic resonance (MR)...Show More
Optimized Plane Wave Imaging for Fast and High-Quality Ultrasound Imaging
This paper presents a method for optimizing parameters affecting the image quality in plane wave imaging. More specifically, the number of emissions and steering angles is optimized to attain the best images with the highest frame rate possible. The method is applied to a specific problem, where image quality for a $\lambda $ -pitch transducer is compared with a $\lambda $ /2-pitch transducer. G...Show More
Image registration by maximization of combined mutual information and gradient information
First Page of the Article
Show MoreImage Quality Enhancement Using a Deep Neural Network for Plane Wave Medical Ultrasound Imaging
Plane wave imaging (PWI), a typical ultrafast medical ultrasound imaging mode, adopts single plane wave emission without focusing to achieve a high frame rate. However, the imaging quality is severely degraded in comparison with the commonly used focused line scan mode. Conventional adaptive beamformers can improve imaging quality at the cost of additional computation. In this article, we propose ...Show More
Improvement of 3-D Ultrasound Spine Imaging Technique Using Fast Reconstruction Algorithm
Hong-Bo Chen;Rui Zheng;Li-Yue Qian;Feng-Yu Liu;Sheng Song;Hong-Ye Zeng
Three-dimensional (3-D) freehand ultrasound (US) imaging has been applied to the investigation of spine deformity. However, it is a challenge for the current 3-D imaging reconstruction algorithms to achieve a balance between image quality and computation time. The objectives of this article are to implement a new fast reconstruction algorithm that can fulfill the request of immediate demonstration...Show More
Filter-based coded-excitation system for high-speed ultrasonic imaging
The authors have recently presented a new algorithm for high-speed parallel processing of ultrasound pulse-echo data for real-time three-dimensional (3-D) imaging. The approach utilizes a discretized linear model of the echo data received from the region of interest (ROI) using a conventional beam former. The transmitter array elements are fed with binary codes designed to produce distinct impulse...Show More
Depth Image Inpainting for RGB-D Camera Based on Light Field EPI
2018 IEEE 3rd International Conference on Image, Vision and Computing (ICIVC)
Year: 2018 | Conference Paper |
Cited by: Papers (5)
RGB-D camera is an active depth measurement device. Depth images collected by RGB-D camera usually have depth errors at objects edges and corners in image. Current researches of depth image inpainting methods were focusing on exploiting existed depth data and making use of corresponding RGB image. This paper proposes a method to inpaint depth image by using Light Field EPI (Epipolar Plane Image), ...Show More
Unified Multi-Modal Image Synthesis for Missing Modality Imputation
Yue Zhang;Chengtao Peng;Qiuli Wang;Dan Song;Kaiyan Li;S. Kevin Zhou
Multi-modal medical images provide complementary soft-tissue characteristics that aid in the screening and diagnosis of diseases. However, limited scanning time, image corruption and various imaging protocols often result in incomplete multi-modal images, thus limiting the usage of multi-modal data for clinical purposes. To address this issue, in this paper, we propose a novel unified multi-modal ...Show More
3D Image Generation From Single Image Using Color Filtered Aperture and 2.1D Sketch-A Computational 3D Imaging System and Qualitative Analysis
Rashmi R. Deshpande;Ch. Renu Madhavi;Mahabaleswara Ram Bhatt
A new method for generating 3D images using both disparity parameters due to the color filtered aperture (CFA) and depth alignment of the multi-plane images for an acquired 2D image using a novel computational imaging system is presented. A CFA is created using add-on red, green, and blue color filters in front of the objective lens for a conventional 2D camera system. The multiple plane images ar...Show More
A Comparison Between a Time Domain and Continuous Wave Small Animal Optical Imaging System
Shay Keren;Olivier Gheysens;Craig S. Levin;Sanjiv S. Gambhir
We present a phantom study to evaluate the performance of the eXplore Optix (Advanced Research Technologies-GE Healthcare), the first commercially available time-domain tomography system for small animal fluorescence imaging, and compare its capabilities with the widely used IVIS 200 (Xenogen Corporation-Caliper) continuous wave planar imaging system. The eXplore Optix, based on point-wise illumin...Show More
Simultaneous Ultrasound and MRI System for Breast Biopsy: Compatibility Assessment and Demonstration in a Dual Modality Phantom
Annie M. Tang;Daniel F. Kacher;Edmund Y. Lam;Kelvin K. Wong;Ferenc A. Jolesz;Edward S. Yang
Simultaneous capturing of ultrasound (US) and magnetic resonance (MR) images allows fusion of information obtained from both modalities. We propose an MR-compatible US system where MR images are acquired in a known orientation with respect to the US imaging plane and concurrent real-time imaging can be achieved. Compatibility of the two imaging devices is a major issue in the physical setup. Tests...Show More
Accuracy in Depth Recovery and 3D Image Synthesis From Single Image Using Multi-Color Filter Aperture and Shallow Depth of Field
Rashmi R. Deshpande;Mahabaleswara Ram Bhatt;C. H. Renu Madhavi
A computational 3D image generation using a single view with multi-color filter aperture (MCA) and multi-plane representation is a cost-effective approach and most useful when there is no option to acquire either stereo or multi-views with orientation at all. Although this approach generates 3D perception image that includes multiple objects with both similar and dissimilar colors having occluded ...Show More
Robust Super-Resolution Volume Reconstruction From Slice Acquisitions: Application to Fetal Brain MRI
Fast magnetic resonance imaging slice acquisition techniques such as single shot fast spin echo are routinely used in the presence of uncontrollable motion. These techniques are widely used for fetal magnetic resonance imaging (MRI) and MRI of moving subjects and organs. Although high-quality slices are frequently acquired by these techniques, inter-slice motion leads to severe motion artifacts th...Show More
Evaluation of an image-based tracking workflow using a passive marker and resonant micro-coil fiducials for automatic image plane alignment in interventional MRI
M. Neumann;E. Breton;L. Cuvillon;L. Pan;C.H. Lorenz;M. de Mathelin
2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Year: 2012 | Conference Paper |
Cited by: Papers (3)
In this paper, an original workflow is presented for MR image plane alignment based on tracking in real-time MR images. A test device consisting of two resonant micro-coils and a passive marker is proposed for detection using image-based algorithms. Micro-coils allow for automated initialization of the object detection in dedicated low flip angle projection images; then the passive marker is track...Show More
Single Plane-Wave Imaging using Physics-Based Deep Learning
Georgios Pilikos;Chris L. de Korte;Tristan van Leeuwen;Felix Lucka
2021 IEEE International Ultrasonics Symposium (IUS)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
In plane-wave imaging, multiple unfocused ultrasound waves are transmitted into a medium of interest from different angles and an image is formed from the recorded reflections. The number of plane waves used leads to a tradeoff between frame-rate and image quality, with single-plane-wave (SPW) imaging being the fastest possible modality with the worst image quality. Recently, deep learning methods...Show More
A New Plane Wave Compounding Scheme Using Phase Compensation for Motion Detection
Plane wave (PW) transmission has enabled multiple new applications, such as shear wave elastography, ultrafast Doppler imaging, and functional ultrasound imaging. PW compounding (PWC), which coherently sums the echo signals from multiple PW transmits with different angles, is widely used to improve B-mode image quality. When the motion between two speckle images is estimated, PWC suffers from an i...Show More
Image Quality Enhancement Using an Improved Deep Neural Network for Single Plane Wave Beamforming
2021 IEEE International Conference on Systems, Man, and Cybernetics (SMC)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
In recent years, plane wave (PW) ultrasound (US) imaging has emerged as a promising method for ultrafast US imaging due to its high temporal resolution. PW transmissions have a lower image quality when the number of PW is limited. The conventional approach to reconstruction entails a coherently summing sequence of US signals at the cost of frame rate. In this paper, an improved deep neural network...Show More
Coherent plane-wave compounding (CPWC) is an effective method to improve the image quality of ultrasound plane-wave imaging (PWI), which coherently sums the delay-and-sum (DAS) beamforming outputs of PWI at different steering angles. However, due to the data-independent nature, the DAS obtains limited imaging resolution and contrast. Therefore, various adaptive beamforming methods have been presen...Show More
A novel fuzzy c-means approach with bit plane algorithm for classification of medical images
2013 IEEE International Conference ON Emerging Trends in Computing, Communication and Nanotechnology (ICECCN)
Year: 2013 | Conference Paper |
Cited by: Papers (4)
This study plays a vital role in the significance of the analysis of an image in medical image processing field, is gaining thought of many researchers in modern times. The recognition of faults present in the destroyed portion of an image is imperative for based field. In this paper, we focus at developing an approach for better classification of medical images. Our methodology is based on the co...Show More
Detection of Contrast Agents: Plane Wave Versus Focused Transmission
Jacopo Viti;Hendrik J. Vos;Nico de Jong;Francesco Guidi;Piero Tortoli
Ultrasound contrast agent (UCA) imaging provides a cost-effective diagnostic tool to assess tissue perfusion and vascular pathologies. However, excessive transmission (TX) levels may negatively impact both uniform diffusion and survival rates of contrast agents, limiting their density and thus their echogenicity. Contrast detection methods with both high sensitivity and low-contrast destruction ra...Show More
Experimental Implementation of a Pulse Compression Technique Using Coherent Plane-Wave Compounding
Yanis Mehdi Benane;Denis Bujoreanu;Roberto J. Lavarello;François Varray;Jean-Michel Escoffre;Anthony Novell;Christian Cachard;Olivier Basset
The axial resolution of an ultrasound imaging system is inversely proportional to the bandwidth of the emitted signal. When conventional pulsing (CP) is used, the impulse response of the transducer and the excitation signal determine together the shape of the emitted pulse and its bandwidth. A way to increase the ultrasound image resolution is to increase the transducer's limited passband. The res...Show More
Reconstruction of Plane-Wave Imaging Using Dual-Domain Hybrid Neural Network
Tianli Wang;Yu Qiang;Weibao Qiu;Xinyu Zhang;Yuanyuan Shen;Minhua Lu;Xin Chen;Yanyan Yu
2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium (UFFC-JS)
Year: 2024 | Conference Paper |
The image quality of plane wave (PW) ultrasound imaging is usually enhanced through Coherent Plane-Wave Compounding (CPWC), which utilizes multiple angles of PW for imaging. The image quality is strongly correlated with the number of PW angles, thus necessitating a trade-off between imaging time and image quality. Both radio frequency (RF) data and single-angle image reconstructed by Delay-and-Sum...Show More
Standards Dictionary Terms
- ROI
- slice
- CT
- CT value
- DFT
- MTF
- NEQ
- NPS
- POM
- SNR
- SSP
- computed tomography (CT)
- coronal image
- effective atomic number ( $Z_{\text{eff}}$ )
- mean
- modulation transfer function (MTF)
- multi-energy
- noise equivalent quanta (NEQ)
- noise power spectrum (NPS)
- polyoxymethylene (POM)
- projection image
- registration
- slice sensitivity profile (SSP)
- standard deviation
- standard mode of operation
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