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Conference proceedings front matter may contain various advertisements, welcome messages, committee or program information, and other miscellaneous conference information. This may in some cases also include the cover art, table of contents, copyright statements, title-page or half title-pages, blank pages, venue maps or other general information relating to the conference that was part of the original...
During radiotherapy, tumors in thorax or abdomen may deviate from the beam because of the physiological or physical influence, such as breathing. Extracorporeal marker is an important substitution to locate the tumors affected by respiratory motion. In this paper, a multi-camera vision system is proposed to track the extracorporeal marker on the model which can simulate respiratory motion. By acquiring...
Spectrum mapping reflects the strength of brain electrical activity in different frequency band. The current study analyzes changes in electroencephalography (EEG) after spinal cord injury (SCI) on the basis of spectrum mapping. Comparing spectrum mappings of SCI patients and normal subjects, the fact that beta rhythm dominated in brain electrical activity during walking period was concluded. In addition,...
Existing maximum a posteriori probability and Markov random field (MRF) models have limitations associated with that the ordinary neighborhood system being unable to differentiate subtle changes due to several-to-one correspondence within the neighborhood. Aiming at overcoming the limitations and applications to segmentation of cerebral vessels from magnetic resonance angiography images, we proposed...
The purpose of this paper is to improve the quality of low dose Computed Tomography (CT) images. Low dose artifacts are the Gaussian noises superimposed on the CT images and are often caused by insufficient calibrated detector and photon starvation. A noise reduction method via three dimensionaltotal variation usingCompute Unified Device Architecture (CUDA) is proposed on the three dimensional image...
Cone-beam computed tomography (CBCT) is an important technique providing new insights into the inner structure of products in industry and medicine physics. Iterative reconstruction methods have been shown to be more robust than analytical algorithm against the noise and limited angles conditions present in CT. Nevertheless, these methods are not extensively used due to their computational demands...
In this paper an EHG signal acquisition and processing system has been designed, it adopted TMS320DM6446 chip to be the master controller and a new mechanism of communication between ARM and DSP is also designed for TMS320DM6446. The EHG signal was directly collected by ADS1298 chip, after preprocessing and wavelet analysis, the signal was compared with the normal EHG signal from the pregnant women...
Many images suffer from poor contrast. It is necessary to enhance the contrast of images. Image enhancement improves an image appearance by increasing dominance of some features or by decreasing ambiguity between different regions of the image. Histogram equalization (HE) is widely used for contrast enhancement in a variety of applications due to its simple function and effectiveness. However, it...
To display and process images in different DICOM formats, this article introduces a new method of integrating ITK, VTK and QT to process the images in DICOM format, and a software was designed based on the three tools. The results indicate that this software can read and display DICOM images with different suffixes and can process medical images simply.
In order to provide prostate biopsy operators with information from pre-operative MR images, MR images must be transformed accurately to the Transrectal Ultrasound (TRUS) real-time images. In our work, we used the well-known Robust Points Matching (RPM) algorithm to find the corresponding point pairs from the prostate contours of MR and TRUS and the thin plate splines (TPS) to transform MRI to TRUS...
With the rapid development of multimedia technology and network technology and wide application of digital image, more and more attention has been paid for Content-based image retrieval technology. For a long time Xinjiang uygur hospitals and medical institutions accumulated a large amount of underutilized data of uygur medicine. In this paper, the image color histogram feature of botanical and animal...
In the paper, the EEG features under electrical stimulation is studied. After analysis the data that collected in experiment by the method of wavelet entropy and complexity, we found that electrical stimulation can obviously change the complexity of brain signals, and the wavelet energy entropy of its brain signals have notable changes as well. According the result of coherence estimation, it is found...
In mammography computer-aided diagnosis, the automatic extraction of interesting region is one of the most difficult problems. This paper presents a method based on two-dimensional principal component analysis (2DPCA) to extract the region of interest (ROI) automatically. First, preprocess the mammograms, then, extract mammography features by 2DPCA method and edge-detection algorithm. Finally, extract...
Object: For realizing the Finite Element (FE) analysis of real human head electromagnetic distribution induced by Trans-cranial Magnetic Stimulation (TMS), a complex human head FE model containing seven organizational structures, i.e. scalp, skull, cerebrospinal fluid (CSF), grey matter, white matter, cerebellum and eyeballs, was established, with the distribution of conductivities, and hence the...
Breast tumor detection is a most effective way to immunized against mammary cancer. It is known that the sort algorithm of extreme learning machine(ELM), in view of the feature model for breast X-ray image, is being applied in the computer aided detection of breast masses. On the basis of all these, it is raised in this paper that marking for the suspicious region in the double view mammography by...
Binocular disparity is of vital importance in stereoscopic vision. It determines the depth magnitude and effects the impression formation when human watch three-dimensional things. However so far how binocular disparity activates the brain regions hasn't got consistent conclusions. So a fMRI(functional magnetic resonance imaging) experiment was designed to locate cortex areas related with stereoscopic...
Magnetic resonance (MR) images can be used to detect lesions in the brains of multiple sclerosis (MS) patients and is essential for diagnosing the disease and monitoring its progression. An automatic method is presented for segmentation of MS lesions in multispectral MR images. Firstly a PD-w image is subtracted from its corresponding T1-w image to get an image in which the cerebral spinal fluid (CSF)...
The purpose of this paper is to investigate the feasibility of similarity coefficient map (SCM) in improving the quality of MR images of spleen by improving signal to noise ratio (SNR) and contrast to noise ratio (CNR), revealing fine structures buried in noise, and integrating the information of each individual image in a series together into one image. To achieve these goals, in vivo experiments...
The objective of this study was to observe the age-related changes of sulfated glycosaminoglycan (sGAG) content and surface roughness of hip joint cartilage of elderly people based on Equilibrium Partitioning of an Ionic Contrast Agent (EPIC) Micro-CT. 35 human hip cartilage-bone samples were prepared from hip-fracture patients whose age were from 50 to 100 years old and divided into 5 groups (10...
Transmit/receive MTL (Microstrip Transmission Line) array has been widely used for ultra-high-field MRI because of its low mutual coupling characteristics. However, several design issues such as limit to the length of a single coil element still remains. For traditional MTL coils, two capacitors (one fixed, one variable) were put at both ends of the coil element for tuning. Based on our experimental...
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