Proceedings IEEE International Symposium on Biomedical Imaging
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Các bài báo tiêu biểu
Raped calculation of detectability in Bayesian SPECT
- Trang 78-81
To speed up the laborious process of optimizing and comparing SPECT imaging systems, computational methods using model observers can be used to predict human performance in the context of a lesion detection task. We address the case of SPECT images reconstructed by Bayesian MAP methods and the use of a channelized Hotelling observer (CHO) for a detection task. It is possible to write a closed-form......
#Bayesian methods #Optimization methods #Computational modeling #Context modeling #Predictive models #Humans #Lesions #Image reconstruction #Image quality #Attenuation
Hybrid MR/near infrared imaging of the murine brain: optimization of optical fiber arrangement and use of a-priori knowledge
- Trang 74-77
In this work we will present our initial study into the use of hybrid MRI/Near Infrared (NIR) imaging system and the reconstruction algorithm for the murine head. We will show that the arrangement of optical fibers on one side of the head, near the brain, will provide more information about optical changes within the brain. Also, we will show that by the use of a-priori information from MRI and ap......
#Infrared imaging #Optical fibers #Head #Magnetic resonance imaging #Optical imaging #Image reconstruction #Image segmentation #Spatial resolution #Reconstruction algorithms #Tomography
Hướng tới một đèn pin siêu âm có tính ứng dụng lâm sàng Dịch bởi AI
- Trang 417-420
Chúng tôi đã cho thấy một phương pháp mới để kết hợp hình ảnh nhìn trực tiếp của bệnh nhân với hình ảnh siêu âm được hiển thị trong tình huống thực tế bên trong cơ thể bệnh nhân, bằng cách sử dụng một gương bán phần bạc. Chúng tôi gọi phương pháp này là Phản Chiếu Chẩn Đoán Thực Thời (RTTR). Bài báo này đánh giá tiến trình của chúng tôi cho đến nay trong việc phát triển một hình thức RTTR mà chúng......
#Optical feedback #Merging #Ultrasonic imaging #Mirrors #Tomography #Optical reflection #Acoustic reflection #Prototypes #Collaboration #Performance gain
A novel approach to quantitative analysis of electrophoretic gel images of DNA fragments
- Trang 899-902
A novel methodology of DNA gel image analysis has been proposed that is based on 2D image processing methods instead of previously used 1D Gaussian deconvolution. The algorithms specifically tailored to band boundary detection and image intensity homogeneity characterization have been developed. The proposed methodology involves a modified type of user interaction.
#Image analysis #DNA #Deconvolution #Image processing #Software systems #Biotechnology #Electrokinetics #Information analysis #Integral equations #Convolution
Độ biến thiên trong việc tái cấu trúc ba chiều từ các dự đoán Dịch bởi AI
- Trang 749-752
Các phương pháp ước lượng độ biến thiên cho việc tái cấu trúc ba chiều (3D) từ các dự đoán được giới thiệu. Trước tiên, một độ biến thiên trong không gian Fourier cho một lớp các thuật toán tái cấu trúc 3D liên quan đến nội suy được suy diễn. Nó được sử dụng để xây dựng một bài kiểm tra tính hợp lệ của quy trình phân tích hạt đơn. Thứ hai, một độ biến thiên/tương quan trong không gian thực cho một......
#Signal resolution #Image reconstruction #Noise level #Signal to noise ratio #Image analysis #Proteins #Error correction #Image resolution #Power capacitors #Biomedical imaging
Optimization of a high sensitivity MRI receive coil for parallel human brain imaging
- Trang 966-969
Two eight-channel MRI receive-only coils were developed to provide whole-brain coverage at 1.5 T and 3.0 T field strength, respectively. Objectives were an image signal-to-noise ratio superior to standard designs throughout the human brain, as well as high parallel imaging performance. Electromagnetic field simulations were used to determine array diameter and inter-element coil gap. Low mutual in......
#Magnetic resonance imaging #Humans #Coils #Signal to noise ratio #Magnetic noise #Brain modeling #Acceleration #Magnetic heads #Impedance #Noise measurement
Merging augmented reality and anatomically correct 3D models in the development of a training tool for endotracheal intubation
- Trang 895-898
Augmented reality is often used for medical training systems in which the user visualizes 3D information superimposed on the real world. In this context, we introduce a augmented reality tool to train the medical practitioner hand-eye coordination in performing critical procedures such as endotracheal intubation.
#Merging #Augmented reality #Computer science #Visualization #Personnel #Hospitals #Management training #Disaster management #Heart #Niobium
Performance of an MEG adaptive-beamformer technique in the presence of correlated neural activities: correlation-coefficient estimation and time-course retrieval
- Trang 1019-1022
The influence of temporarily correlated source activities on neuromagnetic reconstruction by adaptive beamformer techniques is investigated. It is known that the spatial filter weight of an adaptive beamformer cannot perfectly block correlated signals. This causes two major influences on the reconstruction results: time course distortions and reductions in reconstructed signal intensifies. The red......
#Image reconstruction #Magnetic field measurement #Signal processing algorithms #Sensor arrays #Distortion #Coils #Covariance matrix #Biomedical engineering #Cities and towns #Educational institutions
Simultaneous validation of image segmentation and assessment of expert quality [tumor MRI application]
- Trang 94-97
Characterizing the performance of image segmentation approaches has been a persistent challenge. Interactive drawing of the desired segmentation by domain experts has often been the only acceptable approach, and yet suffers from intra-expert and inter-expert variability. Algorithms have been sought in order to remove the variability introduced by experts. The accuracy of segmentations of medical i......
#Image segmentation #Biomedical imaging #Imaging phantoms #Volume measurement #Sensitivity and specificity #Surgery #Laboratories #Hospitals #Maximum likelihood estimation #Image recognition
Automatic segmentation of mammographic masses using fuzzy shadow and maximum-likelihood analysis
- Trang 241-244
This study attempted to accurately segment tumors in mammograms. Although this task is considered to be a preprocessing step in a computer analysis program, it plays an important role for further analysis of breast lesions. The region of interest (ROI) was segmented using the pixel aggregation and region growing techniques combined with maximum likelihood analysis. A fast segmentation algorithm ha......
#Cancer #Image databases #Radiology #Breast neoplasms #Testing #Image segmentation #Intersymbol interference #Lesions #Benign tumors #Pixel