In this paper, a segmentation method, supervised FCM, is used to segment multi-spectrum MR imaging. The qualitative evaluation of human brain can be provided by the results for diagnostics. It can improve the results using FCM.

Objective:In order to improve the learning interest and teaching effect,it is absolutely necessary to design a physical courseware which was suitable for medical students.Taken standing wave as an example,designing and making process of the courseware was introduced in detail.Methods:Using GUI in MATLAB software,the key steps of making the courseware were given.Results:In the interface of the physical courseware,standing wave,damped vibration and forced vibration can be demonstrated real-timely after fixed parameters of the physical process.And it was testified in the course of actual teaching and autonomous learning.Conclusion:The physical courseware was designed and made by the GUI in the MATLAB software.The results are scientific and precise.Furthermore,it is not difficult to make a courseware on the base of the preliminary ability in using MATLAB.In short,GUI is not difficult to learn and it is useful for teachers to design individual courseware.

Objective: To study the method of extracting somatosensory evoked potential better. Methods: This article com-pares an auto-reference, auto-correlative and adaptive interference cancellation theories and techniques (AAA-ICT) used to the single trial of somatosensory evoked potential (SEP) with the traditional superposition averaging. Results: By the intensive study and analysis of the somatosensory evoked potentials from the 80 human subjects whose nervous systems are normal, We can find that the traditional superposition averaging method has its reasonable connotation on the extraction of SEP except the inevitable defects. Conclusions: Meanwhile the AAA-ICT avoids its defects. R implements another jump for the SEP extrac-tion method and has a good clinical application value.

This study presents a fitting method for the intensity-response curve of electroretinogram. The data of b-wave amplitudes from 10 eyes with idiopathic macular hole and their contra-lateral contrast eye (normal) were analyzed. It was observed that the Rmax de creased significantly (P=0.013) in the eyes with idiopathic macular hole.

There are many problems in the present medical physics experiment teaching, such as, behindhand experiment content and experiment instrument, single teaching methods, the lack of experiment time and laboratory funding, unreasonable experimental test methods and experimental plan, the lack the opportunity to operate hands-on labs for students, student's enthusiasm and initiative is not high, and so on. In order to solve these problem, promote the course construction and teaching reform of medical physical experiment, we have carried on a series of reforms, for example, starting from the selection experiment content, improvement teaching methods and test methods, paid great attention to enhance experimental ability of students, improved experiment's quality, stimulated experimental enthusiasm of students. At the same time, combined with the actual situation of laboratory and students, we make some renewal and consummation to experimental textbooks, strengthen standardization management to the laboratory, such as collective preparation for lessons, attend lecture each other and tutorial system for young teacher cultivation, improve and perfect a variety of laboratory rules and regulations. These will causes the laboratory construction standard order.

Objective: To develop a novel fast auto blood viscosity analyzer based on the relation between flow rate and Casson viscosity of non-Newton fluid such as blood. Methods: Different from the tradition friction method of measuring blood viscosi-ty, the instrument was developed based on the Casson flow equation for blood in round tube and Stokes equation, using virtual instrument technique to calculate the Casson viscosity and stress, and pressure sensor and peristaltic pump to perform a setup. Results: Controlled by the data acquisition system, the blood Casson viscosity and stress were measured quickly and simply. Conclusions: Compared with the similar instruments used in clinic, this analyzer is faster in measurement and has high preci-sion, can determine the apparent viscosity and other Casson parameters of blood at any shear rate, and gives more clinic informa-tion for patients.

Objective:Based on Co-occurrence Matrix and Run-length Matrix,we studied cerebral infarction patients' MR image texture characters.The aim is to investigate the differences of lesion textures characters between patients' groups and normal control groups,so that we can use this tiny change to realize early diagnosis of cerebral infarction.Methods:Texture features were extracted from MR images of patients and normal control groups respectively.Fisher test was applied to choose valid textures characters and made features classifier.Results:Linear discriminant analysis can achieve 88.31% classification accuracy.This demonstrated that cerebral infarction patients and normal control groups have the differences of textures Characters in MR image.Conclusion:We can discover cerebral infarction patients' MR image texture characters change by texture analysis,so that early diagnosis of cerebral infarction would be realized.

Objective: Develop an assistant diagnosis system for arrhythinias which can reduce doctors' workload and improve their veracity of diagnosing ECG. Methods: Firstly, this paper achieves filter and detection of waves using wavelet transform and extracts parameters; Secondly, it reduces parameters using rough set and identifies arrhythmias according to relevant rules; At last, it gets the membership of abnormal heart beat by fuzzy neural network. Results: The main modules such as filter, detection of waves and identification of arrhythmias are achieved well, and a complete system is formed. Conclusions: This system can identify nineteen arrhythmaias and get their membership and position. It could assist doctors in making the proper diagnosis on ECG potentially.

In the measurement of the forced oscillation respiratory impedance, we designed a narrow-band second-order band-pass comb filter which is centered at the forced oscillation frequencies for eliminating the interference of spontaneous breathing. The result shows that an increase of signal-to-noise ratio (SNR) reaches 6.0 dB, and keeps it almost constant over the whole frequency band when compared with a conventional high-pass filtering. So we can assess correctly the impedance of respiratory system.

objective: To observe the variations of stress magnitude in the cervical vertebra exerted by vertical traction force from various angles and different points. Methods: The cervical vertebra model was produced by using elastic material of light (polycarbonate) and silica rubber(1:1). By calculating the arithmetical progression of interference fringe. The author judged the stress magnitude in the posterior edge of the C4-7 vertebral bodies when different kinds of pulling force acted on. Result: The interference pattern was seen clearly on the screen while the force acted on the model. When the pulling force acted on C1 or C2, the force was acting at an angle of 150the maximum of the stress presented in C4-5 and when the force acted at an angle of 25° the maximum stress presented in C5-6 and C6-7. Conclusion: The stress distributed upon the posterior edge of the vertebral joints is closely related to the points that the force aced on and the direction of the force． Appropriate points and direction of the pull should be selected according to the change of the lesion joints when manual manipulation is used for the treatment of cervical vertebral disease.