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39results about How to "Realize non-invasive testing" patented technology

System and method for retrieving corresponding positional relationship of blood vessels under multi-angle arteriography

The invention discloses a system and method for retrieving the corresponding positional relationship of blood vessels under multi-angle arteriography. The system comprises an angiographic machine, an angiographic image receiving module, a center point calibration module, a corresponding feature point detection module and a feature point corresponding blood vessel module; the angiographic machine is used for imaging and collecting a plurality of angiographic images of a projection position; the angiographic image receiving module is used for receiving the images and transmitting the images to the center point calibration module; the center point calibration module is used for calibrating the center point deviation caused by a multi-angle arteriography system, and a result is transmitted to the feature point detection module; the feature point detection module receives a plurality of feature points of a reference projection angle angiographic image target blood vessel, and corresponding feature points of a second projection angle image is detected through a spatial polar line constraint relationship; the feature point corresponding blood vessel module is used for determining the blood vessels where the feature points are located. By means of the system and method, the complexity of existing corresponding relationship detection is simplified, and the accuracy of the result is ensured while noninvasive detection is achieved.
Owner:SHANGHAI JIAO TONG UNIV

Novel helicobacter pylori detection method and device as well as application thereof

The invention provides a method for carrying out in vitro diagnosis on concentration of helicobacter pylori in a stomach by taking a wavelength scanning-cavity ring down spectroscopy (WS-CRDS) as a detection technology and taking urea marked by carbon-13 isotope as a tracer agent through detecting carbon-13 abundance change of carbon dioxide in breathing air of a patient. A measurement technology comprises the following steps: leading generated laser into a light reflection unit to be circulated and reflected until small amount of laser strength leaked by the light reflection unit reaches a threshold value; stopping inputting the laser until light cavity attenuation is zero; inputting CO2-containing gas exhaled by the patient into a resonance cavity unit to accelerate oscillation of laser; detecting a light intensity resonance difference in a resonance cavity by using the laser with adjustable wavelength; calculating a time difference of inputting target gas CO2 and hollow cavity oscillation to form a characteristic spectrum line; integrating characteristic spectrum peaks of 13CO2 and 12CO2; and measuring carbon-13 abundance of the target gas CO2; and comparing delta13CO2 of the carbon-13 abundance in the CO2 before and after taking the urea marked by the carbon-13 isotope as the tracer agent, wherein a high-confidence coefficient clinical statistical result shows that a direct ratio is formed by the delta13CO2 and Hp content. The method is accurate, flexible, environmentally friendly and economical, and is suitable for clinical large-scale application.
Owner:SUZHOU QINGSHAN BIOTECH

Noninvasive blood sugar detection device based on raman scattering spectrum and detection method

The invention discloses a noninvasive blood sugar detection device based on a raman scattering spectrum. The noninvasive blood sugar detection device based on a raman scattering spectrum comprises a semiconductor laser, an optical fiber beam splitter, an optical fiber probe, a light filter, a raman spectrometer, a first circuit switch, a second circuit switch, a phase locking amplifier, a heart rate measuring apparatus and a computer. According to the noninvasive blood sugar detection device based on a raman scattering spectrum disclosed by the invention, raman scattering light contains rich molecular vibration information, the characteristics that the raman scattering spectrum having different molecules has different features are utilized, the raman scattering spectrum is used for recognizing molecules; and through the relative value of a glucose characteristic peak at the position of 1125cm-1 in the raman scattering spectrum in pure blood to the hemoglobin characteristic peak value at the position of 1549cm-1, and real-time human body blood sugar concentration data measured by a blood sugar biochemistry instrument, a standard straight line L of the relationship between the relative peak value of the glucose characteristic peak at the position of 1125cm-1 and the human body blood sugar concentration is constructed, and finally noninvasive real-time detection of the human bodyblood sugar is realized. The noninvasive blood sugar detection device disclosed by the invention has the advantages of being high in precision, pollution-free, harmless to human bodies and the like, and has great application prospects in the field of biological noninvasive detection.
Owner:NINGBO UNIV

Noninvasive blood glucose screening system based on gas discharge imaging technology

The invention provides a noninvasive blood glucose screening system based on a gas discharge imaging technology. The system comprises a GDV instrument, a meridian energy parameter acquisition module, a disease parameter and meridian energy parameter correlation analysis module, a mathematical model establishment module and a diabetes attack score determination module. The system is used for screening out meridian energy parameters related to diabetes diagnosis according to a fingertip glow image of a user, establishing a mathematical model according to the meridian energy parameters, and obtaining a diabetes attack score cut-point according to the meridian energy parameters related to diabetes diagnosis and the mathematical model, so as to determine the risk degree of the user suffering from diabetes according to the diabetes attack score cut-point. According to the noninvasive blood glucose screening system based on the gas discharge imaging technology, the diabetes attack risk value and corresponding conditioning suggestions can be obtained by collecting two photos of fingers of the left hand and the right hand of the user, the coverage rate of diabetes screening can be increased, and part of hidden or early diabetes patients can be found in time.
Owner:OVATION HEALTH SCI & TECH CO LTD

System for measuring conduction time of pulse waves between cerebral arteries and cerebral veins

ActiveCN102599896BRealize non-invasive testingAccurate and more direct reflection of stiffnessCatheterBlood flow measurementDisplay deviceLarge artery
The invention relates to a system for measuring the conduction time of pulse waves between cerebral arteries and cerebral veins. The system comprises a signal acquisition device, a signal processing device and a display device, wherein the signal acquisition device is connected with the signal processing device through a communication interface module; and the output end of the signal processing device is connected with the display device. The cerebral blood flow signal acquisition method comprises the following steps: 1) arranging a fixed probe device with two cerebral blood flow signal acquisition devices; 2) synchronously acquiring cerebral blood flow signals; and 3) exchanging the positions of the two cerebral blood flow signal acquisition devices. The medicinal uses of the system are as follows: 1) synchronously acquiring the cerebral blood flow signals of ipsilateral encephalic large arteries (aorta) and encephalic deep veins of a person to be tested at a resting state; and 2) measuring the time difference of the two cerebral blood flow signals. Through the system provided by the invention, noninvasive detection is realized on the conduction time of pulse waves between the cerebral arteries and the cerebral veins; and the clinical practicality is strong, the stiffness of cerebral arteriolae can be accurately and directly reflected, and the risk of apoplexy is estimated, thus being beneficial for early discovering and preventing cerebral arteriosclerosis of patients.
Owner:THE SECOND AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV

Neck and brain arterial pulse wave speed measurement system

The invention relates to a neck and brain arterial pulse wave speed measurement system, which is characterized by comprising a signal collection device, a signal processing device, a display device and a communication interface module, wherein the signal collection device is connected with the signal processing device through the communication interface module, the output end of the signal processing device is connected with the display device, the signal collection device is used for synchronously sampling blood flow signals at the tail sections of a common carotid artery and an internal carotid artery and converting the blood flow signals to corresponding digital signals, the signal processing device is used for processing synchronously obtained brain blood flow signals to obtain time difference among the signals, and the display device is used for displaying parameters of the blood flow signals and parameters of the time difference among the signals. The neck and brain arterial pulse wave speed measurement system achieves noninvasive detection on neck-brain arterial pulse wave speed, is accurate and reliable in results and strong in clinical practicality, reflects stiffness conditions of the cerebral artery more accurately and directly, estimates apoplexy risks, and is beneficial to early discovery and precaution of apoplexy.
Owner:THE SECOND AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV
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