1.Design of Digital Filter of Cancelling 50HZ Noise
Chinese Medical Equipment Journal 2003;0(12):-
Objective To design a bandstop digital filter for cancelling the 50HZ noise. Methods Procedure and FDATool method were used in processing. Results The filter was tested by a blended sine wave, the experimental result showed that the filter could cancel the 50HZ noise. Conclusion This filter may eliminate a random noise except the 50HZ noise by modifying the procedure simply.
2.Design of digital body thermometer based on LM35
Chinese Medical Equipment Journal 1989;0(04):-
In this paper, LM35 tempeture sensor is tested and shows good linear characteristics between 30 ℃ and 60 ℃, which provides a theoretical basis for making digital thermometer. A/D converting chip and 89c51 single chip micro -processor are employed in this digital body thermometer based on LM35. It possesses such advantages as low cost, high accuracy and excellent stability.
3.3D image fusion technique and its clinical application
Yibing LI ; Dakun YU ; Guoquan XING
Chinese Medical Equipment Journal 2004;0(08):-
Objective To introduce a new method for ultrasonic imaging,3D image fusion technique,and its clinical applications and prospects.Methods A lot of domestic and foreign papers related to 3D image fusion technique were referred to.Results 3D image fusion technique had giant advantage in diagnosis and treatment of tumor.Conclusion 3D image fusion technique is found with a big potential and its extensive application has to take time.
4.Risk factors for pancreatic fistula after pancreaticoduodenectomy and its prevention and treatment measures
Guoquan XING ; Tianqing YAN ; Zhishuo JIA
Journal of Clinical Hepatology 2015;31(12):2110-2113
Pancreatic fistula, a common complication after pancreaticoduodenectomy, is a severe condition with a high mortality. Therefore, early diagnosis of this condition and effective prevention and treatment measures are essential. This article reviews the diagnostic criteria for pancreatic fistula, the risk factors for its development, and research advances in the prevention and treatment of pancreatic fistula.
5.A new wavelet image de-noising method based on new threshold function.
Guoquan XING ; Huashan YE ; Yuxia ZHANG ; Yu YAN
Journal of Biomedical Engineering 2013;30(4):743-747
In order to improve image de-noising effect,a new threshold function de-noising method based on wavelet analysis was proposed, which can overcome the continuity problem of the hard-threshold function, and eliminate the constant deviation of the soft one by constructing a new threshold function. Experimental results showed that the new threshold function could obtain higher peak signal to noise ratio (PSNR) in image de-nosing. A better denoising effect could be obtained compared with the hard-threshold function, the soft one, the semi-soft one, the cubic polynomial interpolation semi-soft one, and the asymptotic semi-soft one.
Algorithms
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Artifacts
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Humans
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Image Interpretation, Computer-Assisted
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methods
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Photography
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methods
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Wavelet Analysis