1.Development of portable HF X-ray machine
Chinese Medical Equipment Journal 2004;0(07):-
The portable high frequency (HF) X-ray machine for field use is introduced in this paper, which applies HF technology and the microcomputer. Compared with the traditional one, it has many new functions such as the self-motion exposal, real-time inspection and display, the alarm of the failure and the automatic disposal. With the advanced technology, it has overcome the deficiencies of the traditional one, including the overweight, bulkiness and unportability. Equipped with the portable mobile shelf, this machine is fit for field operations.
2.Variational Model on Wavelet Domain for PET/CT Image Fusion
Qian NI ; Chaomin CHEN ; Linghong ZHOU
Chinese Medical Equipment Journal 1993;0(05):-
Objective To find a new algorithm for PET/CT image fusion.Methods A variational model was used based on the wavelet transform.Firstly,PET and CT images were decomposed using wavelet transform.Then,images in approximate channel and detail channel were fused according to the two proposed assumption.Finally,decomposed images were synthesized to form fused image.Results Compared with the results form MATLAB wavelet fusion toolbox,the experimental results showed that the new variational image fusion model could provide more accurate result for target location in radiotherapy planning.Conclusion According to experiments,the new algorithm can reach good results and meet requirement of clinical demands.
3.Mobile stereotactic radiosurgical system
Linghong ZHOU ; Haoyu JIN ; Zhuoyu WANG
Chinese Medical Equipment Journal 2004;0(09):-
In this paper, the mobile stereotactic radiosurgical system, a new therapeutant for interstitial radiotherapy, is introduced. Its principle and initial clinical applications are also summarized
4.The study of digital X-ray data storage and communication
Xumei MO ; Zhuoyu WANG ; Linghong ZHOU
Chinese Medical Equipment Journal 1989;0(03):-
DICOM is an international standard in medical imaging and communication. This paper introduces the design of digital X-ray data storage and communication according to DICOM3.0 and emphasizes the implementation of such modules as the ones for communication and data storage.
5.Selection of CR and DR
Zhiqiang HE ; Linghong ZHOU ; Chaomin CHEN
Chinese Medical Equipment Journal 1989;0(03):-
Selection of CR and DR is very important for digital radiology departments in modern hospitals. This paper discusses the components of CR and DR as well as their technical requirements.
6.Design of virtual oscilloscope based LabVIEW
Xin NING ; Zhe LI ; Linghong ZHOU
Chinese Medical Equipment Journal 1989;0(03):-
LabVIEW is applied to the realization of virtual oscilloscope, and such functions are fulfilled as waveform display, parameter measurement, filter, spectral analysis, data storage and playback.
7.Application Research on High-Volt Generator of Mobile Photon Radiation Therapy System
Li MO ; Linghong ZHOU ; Guiping JIANG
Chinese Medical Equipment Journal 1989;0(01):-
Objective To design and develop a high-volt generator for mobile photon radiation therapy system's X-ray tube. Methods With a 12V storage battery as the power supply, high-frequency switch circuit and CW voltage doubling rectifying circuit were adopted to generate high voltage. Results Its main circuit was tested by using a simulation software, and it could meet the desired requirements. Conclusion The circuit is simple and reliable, and thus can be miniaturized.
8.Progress in neural-plasticity mechanisms of faster-onset antidepressants
Linghong CHEN ; Zhongze LOU ; Wenhua ZHOU
Chinese Journal of Pharmacology and Toxicology 2014;(4):580-586
Basic and cIinicaI studies demonstrate that depression is associated with abnormaI neuraI pIasticity in some brain regions,incIuding the prefrontaI cortex and hippocampus. Brain-derived neurotro-phic factor(BDNF)and its signaIing pathways pIay a cruciaI roIe in reguIating neuraI pIasticity and deveI-opment of depression. Ketamine or scopoIamine can produce a quick and sustained antidepressant effect,and both can quictIy activate BDNF-signaIing pathways reIated to neuraI pIasticity. In order to pro-vide the theoreticaI basis for future researches on new antidepressants,the neuraI pIasticity mechanisms of faster-onset antidepressants are reviewed in this paper.
9.Design and Speech Synthesis of CIS Strategy Based on Multi-channels for Cochlear Implants Speech Signal Processing
Linjing WANG ; Linghong ZHOU ; Zhongju XIAO
Chinese Journal of Medical Physics 2010;27(1):1659-1661,1680
Purpose:Cochlear implant is a sort of device which is used to restore normal heating for the profoundly deaf by electrical stimulation of the auditory nerve.Simulation of multiple channels demonstrates that the number of channels has significant influence on sound effect.Method:This paper reviews the Continuous Interleaved Sampling (CIS) strategy for cochlear implants,and simulates it in PC.The audible sound of cochlear implanter is synthesized,and preliminary analysis of the speech identification rate of CIS strategy in different channels has also been done based on the simulation.Result:CIS strategy using 6 or 8 channels can achieve better sound effect .Conclusion:Simulation results show that CIS strategy with envelope extraction and high number of channels can produce satisfactory speech synthesis effect
10.Study on new method for detecting and restraining pacing signals
Haoyu JIN ; Linghong ZHOU ; Canshuo WENG ; Shengsheng LAI
Chinese Medical Equipment Journal 1989;0(03):-
Since the body is a good conductor,the pacing signals and cardio-signals can be acquired together by ECG measuring circuit. The high pacing signals interfere with the processing of cardio-signal. This paper introduces a new method for restraining pacing signals and compares it with the traditional one based on slew inhibition. The result indicates that the new method is superior to the traditional one.