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To study rat behavior have been playing an important role in psychology, medical science and brain science. Open-field test such as holeboard model is a popular experiment to analyze rat behavior. Rat behaviors such as walking, rearing and head dip are usually considered. These behaviors are observed and recorded by human that, obviously, included human errors. Commercial products have limitation...
The blood test is a routine procedure in medical diagnosis. However it takes a couple of days to get the results because blood samples are analyzed by sending to the specialized facility because the operation of the blood test instrument is costly for a hospital or clinic. So development of a novel low cost blood test device is an important issue considering the burden of the patient. To developing...
MRI images are affected by Rician noise due to the magnitude image formation. Presence of Rician noise can significantly affect the image quality and contrast ratio of an image. In this paper we propose an adaptive filtering technique for Rician noise. Rician noise displays varying distribution characteristic depending on the SNR of the image. Based on the probability distribution function of noise...
This study presents a simple fabrication of polymeric diaphragm pressure sensors by embedding a commercial thin-film strain gauge in a polymeric diaphragm. Two different polymer materials, polydimethylsiloxane (PDMS) and polyethylene terephthalate (PET), were employed for fabrication. Performance of pressure sensors fabricated with two different polymers including sensitivity, linearity, and long-term...
Beamforming the ultrasound radiofrequency (RF) data on the computer in stead of doing it on the hardware is currently developed in many research groups. This requires fast transferring of the large amount of data in real-time from the ultrasound scanner front end to the computer. Despite of using an expensive hardware for fast data transfer, we are interested in compress the data before transferring...
We describe a small animal SPECT imager based on scintillation crystal arrays and position sensitive photomultiplier tube (PSPMT). This SPECT detector consists of a cerium doped lutetium-yttrium oxyorthosilicate (LYSO) scintillation crystal (22 × 22 pixel array, 2 mm × 2 mm × 3 mm pixel size), a H8500c PSPMT (Hamamatsu Photonics Co., Ltd., Shizuoka Prefecture, Japan), and a parallel hole collimator...
Function impairment in chronic gait can be caused by abnormal neurological conditions, such as stroke, spinal cord injury, and traumatic brain injury. Only a limited degree of motor function recovery can be provided by using current physiotherapy techniques. Brain-computer interface (BCI) is a modern novel technology with a potential to substitute or restore lost motor behaviors in patients with neurological...
Nitric oxide (NO) is a key oxidative stress marker. Real time NO measurement in pA/nM by electrochemistry is the powerful tool explores pathophysiological process of many disease including stroke subtypes, especially, lacunar stroke. In this study, we investigate the performance of classification models by hybrid nonlinear kernel function of NO obtained from healthy control and lacunar stroke. The...
This paper proposes a method for accurate measurement of a three-dimensional of an eye's pupil by combining local stereo images which are acquired from multiway. A calibrated mini CCD camera is used to capture the side-by-side image of one eye by two plane mirrors to create a reflection of the two directions of the eye at a time. The center of mass is used for two-dimensional coordinates of the center...
In this research, we propose a natural interaction on 3D medical image viewer software. The goal is to replace the windows, icon, mouse and pointer (WIMP) paradigm which might not be convenient in an operating room as sterilization becomes an issue. The Kinect sensor was used as a controller-free input. The fingertip tracking algorithm was implemented and, combined with existing skeletons from the...
Currently, forensic electronics and computers become an attractive scientific and engineering application area. They are applied to determine and identify accused or evidences used in court. However, the determination, verification and identification processes have been manually executed by experts, where they take time to come out conclusions and results. With rapidly increment of illegal cases,...
This study focused on the step of preprocessing in the part of edge detection techniques to detect red blood cells (RBCs) boundaries. The objectives of the study were to make a comparison between gradient based edge detection and zero-crossing based edge detection and to find out the appropriate operator to use for edge detection of RBCs in capillary. Sobel, Robert, Prewitt and Canny were used as...
Many different types of biomedical data can be recorded, however not every method of interpreting this is equally applicable for comparison within or between test groups. When comparing related but dissimilar group members sometimes it is necessary to use alternative methods of analysis, potentially with data derived from the originally recorded data. This paper outlines one such method that was used...
The optimal feature is necessary for the reach of electromyography (EMG) control or human-machine interface. This study aimed to find the optimal feature of time-domain features. Five oral muscles movements were performed in five volunteers. The oral activities were open mouth, protrude mouth, broad smile, straight tongue, and up tongue which were the parts of non-speech oral motor treatments. Sixteen...
In dentistry, often dental radiography is related to teeth occlusal surface, which can be used for diagnostic and treatment purposes. Nonetheless the exposure of X-Ray dose may limit the usage of this technique. This paper presents the image construction from the occlusal surface of human teeth. The principle of the surface construction is from the exploitation of reflected light intensities along...
A novel technique to analyze propagation of fluid flow pattern based on magnetic resonance (MR) velocimetry has been developed and applied to cerebrospinal fluid (CSF) dynamics in intracranial space. This technique evaluates spatial distribution of the correlation time as well as correlation coefficient of velocity waveform with respect to an arbitrary reference waveform using quantitative velocity...
This study proposes and appraise a gray level co-occurrence matrix (GLCM) for extracting the feature of cell regions in microscopic image into four region types: positive cancer cell, negative cancer cell, lymphocyte and stromal cell. The classification task uses decision tree with cross validation. To give a high classification performance, the main focus of interest is feature extraction task. Twenty-two...
The Strabismus affects about 4% of the children population, causing amblyopia disease. However, this problem can be found by the Hirschberg test that is one of the exams used to detect this pathology. This work presents a methodology for automatic detection of strabismus in digital images through the Central corneal light reflex ratio (CCLRR) based on digital image processing. The proposed algorithm...
Irrelevant features may lead to degradation in accuracy and efficiency of classifier performance. In this paper, Bootstrap Causal Feature Selection (BCFS) algorithm is proposed. BCFS uses bootstrapping with a causal discovery algorithm to remove irrelevant features. The results are evaluated by the number of selected features and classification accuracy. According to the experimental results, BCFS...
The Hospital Drug Information Center (DIC) is an essential unit in a hospital, providing critical information to support clinical services for virtually every department in the facility. Current hospital information systems (HIS) have not provided adequate functionality to support the services of the DIC, which are primarily focused on documentation and reporting. The software described here represents...
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