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41. 发明专利

JPH0862200A ION SOURCE, AND MASS SPECTROSCOPE USING IT 失效
公开(公告)号：JPH0862200A
公开(公告)日：1996-03-08
申请号：JP20176794
申请日：1994-08-26
申请人： HITACHI LTD
发明人： HIRABAYASHI TSUDOI , SAKAIRI MINORU , TAKADA YASUAKI , KOIZUMI HIDEAKI , UMEMURA KAORU
IPC分类号： G01N27/62 , G01N30/72 , H01J27/26 , H01J37/05 , H01J37/08 , H01J49/04 , H01J49/10
摘要： PURPOSE: To provide an ion source whose ionization efficiency is high without applying voltage to a capillary and to provide a mass spectrometer using the ion source, whose ion intensity is 10 times or higher than that of an ionization method in conventional cases and which can be operated safely. CONSTITUTION: A sample solution is introduced into a capillary inside the ion source 2 from a sample-solution supply part 1. The flow rate of a gas which is supplied from a gas supply part 3 is adjusted by a flowmeter 4, the gas is made to flow along the outer circumferential part of the capillary, and the gas is introduced into a gas guide tube which is constituted so as to be spouted at the tip part of the capillary. The sample solution is ionized by the action effect of the spouted gas at the tip part of the capillary so as to be analyzed by a mass spectrometer 11.

42. 发明专利

JPH07227396A APPARATUS FOR OPTICAL MEASUREMENT OF LIVING BODY AND METHOD FOR OPTICAL MEASUREMENT OF THE SAME 失效
公开(公告)号：JPH07227396A
公开(公告)日：1995-08-29
申请号：JP2094694
申请日：1994-02-18
申请人： HITACHI LTD
发明人： YAMASHITA YUICHI , MAKI ATSUSHI , HIRABAYASHI YUKIKO , KAWAGUCHI FUMIO , ITO YOSHITOSHI , KOIZUMI HIDEAKI
IPC分类号： A61B10/00 , A61B5/145 , A61B5/1455 , G01N21/17 , H04B10/00 , A61B5/14 , H04B10/22
摘要： PURPOSE:To make handling easy and workability good and to display a measured result in the neighborhood of an individual living body in an apparatus for measuring a plurality of living bodies by light. CONSTITUTION:A light from a light source part is transmitted by means of a light distributor through (n) pieces of incident optical fibers to different rooms and the light transmitted into a room 1 is casted on a testee body from a terminal through a plug and a probe and a light passing through the testee body is detected by means of a multichannel light detecting part 16 through a plug and a terminal 6-1 and, by performing image processing in a data processing part, the processed image is transmitted and displayed on a displaying part of each room.

43. 发明专利

JPH07222736A METHOD FOR MEASURING LIVING BODY LIGHT AND DEVICE THEREFOR 失效
公开(公告)号：JPH07222736A
公开(公告)日：1995-08-22
申请号：JP1711594
申请日：1994-02-14
申请人： HITACHI LTD
发明人： YAMASHITA YUICHI , HIRABAYASHI YUKIKO , MAKI ATSUSHI , KAWAGUCHI FUMIO , ITO YOSHITOSHI , KOIZUMI HIDEAKI
IPC分类号： G01N21/27 , A61B5/145 , A61B5/1455 , G01N21/17 , A61B5/14
摘要： PURPOSE:To measure the oxygen metabolic function of a living body with high accuracy by changing a measuring wavelength region corresponding to the measured size of the living body, and changing measuring wavelength regarding a detecting position near or far from a light irradiating position when light passing the living body is detected at plural positions. CONSTITUTION:A size measuring part 5 supports an incident optical fiber 2 and a detection optical fiber 4, and simultaneously, measures the size of a testee body 3. After the incident optical fiber 2 and the detection optical fiber 4 are set on the testee body 3, a resistance value between an incident optical fiber strut 12 and a detection optical fiber strut 13 is measured, and it is converted to the measured size by a control part 10. The measuring wavelength region is selected by the value of the measured size, and the testee body 3 is irradiated with three kinds wavelengths of light in a corresponding wavelength region from a light source part 1 by the incident optical fiber 2 sequentially. The transmission light quantity of the light passing the testee body 3 is found by a light detecting part 6, and the density of oxygenated hemoglobin and that of deoxygenated hemoglobin are found.

44. 发明专利

JPH0751247A ENDOSCOPE PROBE FOR MRI AND MRI DEVICE USING THE ENDOSCOPE PROBE 失效
公开(公告)号：JPH0751247A
公开(公告)日：1995-02-28
申请号：JP20491893
申请日：1993-08-19
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： OCHI HISAAKI , YAMAMOTO ETSUJI , KATAKURA KAGEYOSHI , KOIZUMI HIDEAKI
IPC分类号： A61B1/00 , A61B5/0215 , A61B5/055
摘要： PURPOSE:To carry out the photographing of the wall of a blood vessel and the measuring of the blood pressure concurrently by composing an endoscope for MRI and a sensor for blood pressure measuring integrally, and inserting such a device to a measuring part. CONSTITUTION:The cable 32 for power feeding of a loop antenna 31 is formed along a catheter 30 so as to integrate an endoscope for MRI and a catheter for blood pressure measuring, and by covering the loop antenna 31 and the cable 32 for power feeding with an insulating membrane 33, an electric shock of a patient is prevented. And by making a condenser 34 at the power feeding member variable, the frequency band scope is made to fit to the resonance frequency intrinsic to an atomic nucleus to photograph the frequency band scope. When this MRI device is used, the endoscope probe is inserted to the part to measure, and the minute structure of the blood vessel wall or the valve of the heart are photographed in the well known technology in the MRI field, and at the same time, the blood pressure wave form is measured by an electric pressure gauge installed to the terminal opposite to the blood vessel inserting end of the catheter 30.

45. 发明专利

JPH03147082A THREE-DIMENSIONAL DATA DISPLAY METHOD 失效
公开(公告)号：JPH03147082A
公开(公告)日：1991-06-24
申请号：JP28295889
申请日：1989-11-01
申请人： HITACHI LTD
发明人： SANO KOICHI , HAYAKAWA KOICHI , YOKOYAMA TETSUO , KOIZUMI HIDEAKI
IPC分类号： G01R33/32 , A61B5/055 , G01R33/28 , G06T1/00 , G06T15/08 , G09G5/00 , G09G5/36
摘要： PURPOSE:To accurately display the implication of a blood vessel by dynamically changing a threshold value, and extracting only the blood vessel effective for display. CONSTITUTION:When the projection processing of two-dimensional data from three-dimensional data is performed, a picture element on a line from a visual point to a projecting plane is assumed as one-dimensional data, and an alternation curve holding a peak value sequentially from the visual point is found. A material body existing at a position where the difference of the alternation curve goes to non-zero is assumed as the blood vessel, and furthermore, the material bodies that go to non-zero successively are assumed as one blood vessel. By performing such processing, it is possible to always extract only the blood vessel having a value higher than that of the blood vessel this side. Then, the projecting processing is applied to the representative value of those blood vessels. In such a way, the implication of the blood vessel is accurately displayed.

46. 发明专利

JPH03140139A BODY MOTION REDUCING DEVICE FOR MRI 失效
公开(公告)号：JPH03140139A
公开(公告)日：1991-06-14
申请号：JP27840589
申请日：1989-10-27
申请人： HITACHI LTD
发明人： KOIZUMI HIDEAKI , SUKEGAWA KAZUYA
IPC分类号： A61B5/055
摘要： PURPOSE:To suppress the body motion in the vicinity of the photographing part and to execute detailed picture drawing of a abdominal internal organs and a focus by providing a mechanism for allowing a person to be examined personally sense the fact that the photographing part moves in the course of photographing by pressure, a temperature or the sense of touch, etc. CONSTITUTION:In the case of a man, when a foreign matter is sensed on the surface of the abdomen, breathing is stopped by moving the part in which its foreign matter sense exists, and breathing is executed by moving other part. By using this phenomenon, stopping a motion of the body in the vicinity of the photographing part and breathing by other part, respiratory picture quality deterioration can be reduced. At the time of photographing the abdominal internal organs, usually the whole body coil 52 is used. There is space between the whole body coil 52 placed in a magnet 51 and the abdomen 56 of a person 55 to be examined, therefore, by utilizing space, an elastic body 57 is installed. The elastic body is installed in only the body surface part which is soft, and also, intersects locally with the photographing cross section. Usually, in the case of using a compressed sponge, etc., and photographing the abdominal internal organs, the breathing part is migrated from the abdomen to the breast, and the photographing surface becomes still and stable.

47. 发明专利

JPH02147048A MAGNETIC RESONANCE BODY IMAGING METHOD 失效
公开(公告)号：JPH02147048A
公开(公告)日：1990-06-06
申请号：JP30049088
申请日：1988-11-30
申请人： HITACHI LTD
发明人： SANO KOICHI , MAEDA AKIRA , YOKOYAMA TETSUO , KOIZUMI HIDEAKI
IPC分类号： G01R33/44 , A61B5/055 , G01N33/48 , G01R33/48
摘要： PURPOSE:To image a moving body such as a blood vessel, cerebrospinal fluid or the heart by executing processing to measure an echo signal while an ambipolar phase encode field is impressed and processing to repeatedly execute the processing from excitation to the measurement of the echo signal while the phase encode magnetic field is changed and to measure a two-dimensional echo signal. CONSTITUTION:A high frequency magnetic field 401, with which a nuclear spin falls down by an alpha angle, and an inclined magnetic field in a slice direction to selectively excite the spin in a slice are simultaneously impressed. Next, after the inverted inclined magnetic filed 403 is impressed in the slice direction, a phase encode pulse 404 adding information, with which a position in a phase encode direction is identified, is impressed. At such a time, an inverted inclined magnetic filed 405 in the slice direction is simultaneously impressed in order to form gradient echo. After that, while an inclined magnetic field 406 is impressed in a reading direction, an echo signal 407 is measured. Above mentioned operation is repeated with certain fixed time intervals by changing the intensity of the phase encode pulse 404 and two-dimensional measuring data, which are needed for reproducing the picture, are obtained.

48. 发明专利

JPH0299038A MAGNETIC RESONANCE IMAGING METHOD 失效
公开(公告)号：JPH0299038A
公开(公告)日：1990-04-11
申请号：JP25176988
申请日：1988-10-07
申请人： HITACHI LTD
发明人： MAEDA AKIRA , SANO KOICHI , YOKOYAMA TETSUO , KOIZUMI HIDEAKI
IPC分类号： A61B5/055 , G01R33/48
摘要： PURPOSE:To remove image blurr so that the effect of the shift of resonance frequency becomes positional shift by differentiating the measuring time at the time of the measurement of a magnetic resonance signal at every measurement and making the phase due to the shift of resonance frequency continuous on measured data. CONSTITUTION:A magnetic resonance signal is measured while an inclined magnetic field 108 in an x-axis direction changed in its intensity timewise in the first measurement and an inclined magnetic field 109 in a y-axis direction having constant intensity are applied. In the second measurement, the intensity of an inclined magnetic field pulse 104 is changed and the applying timing of the inclined magnetic field 108' in the x-axis direction and the inclined magnetic field 108' in the y-axis direction having constant intensity is changed so that measurement is started at the point of time when the first measurement is finished to measure a magnetic resonance signal. In the third measurement, a magnetic resonance signal is measured while the applying time is changed in the same way as the second measurement. When a resonance signal is measured by this method, the effect of phase due to the shift of resonance frequency becomes continuous between a plurality of measuring signals and appears as positional shift.

49. 发明专利

JPH01308539A METHOD AND APPARATUS FOR IMAGING MOVING BODY 失效
公开(公告)号：JPH01308539A
公开(公告)日：1989-12-13
申请号：JP14021088
申请日：1988-06-07
申请人： HITACHI LTD
发明人： SANO KOICHI , YOKOYAMA TETSUO , KOIZUMI HIDEAKI
IPC分类号： G01R33/44 , A61B5/055 , A61B10/00 , G01R33/48 , G01R33/561 , G01R33/563 , G01R33/567
摘要： PURPOSE:To form the timewise change of the coronary arteries dynamically changing along with the pulsation of the heart by detecting the movement of a body to be examined and changing a position excited in a high frequency magnetic field on the basis of the position measuring result of the body to be examined to continuously display a regenerated image. CONSTITUTION:In a moving body imaging method, a position exciting a spin is controlled on the basis of a position measuring result to always excite the position containing the root of the main artery regardless of the movement of the heart. The coronary artery is branched into the left coronary artery 303 and the right coronary artery 304 at the position of the root 305 of the main artery 301 and,when a signal is observed after the spin of blood is excited in a region not containing the root 305 and the left coronary artery 303 or the right coronary artery 304 to be formed into an image, on the coronary artery is formed into an image.

50. 发明专利

JPH01192342A MR IMAGING SYSTEM 失效
公开(公告)号：JPH01192342A
公开(公告)日：1989-08-02
申请号：JP1707888
申请日：1988-01-29
申请人： HITACHI LTD
发明人： SANO KOICHI , YOKOYAMA TETSUO , KOIZUMI HIDEAKI
IPC分类号： G01R33/54 , A61B5/055 , A61B10/00 , G01R33/28 , G01R33/32 , G01R33/563
摘要： PURPOSE:To extract even a blood vessel part which is of a complicated shape like an artery in a brain and in which the speed is drastically changed by measuring three-dimensional data in place of observing the projected data directly and calculating the projected data with a computer. CONSTITUTION:A specimen 200 is excited by a static magnetic field generating system 201 to generate an equal static magnetic field, a transmitting system 202 to generate a high frequency pulse to excite a spin and an inclination magnetic field generating system 203 to change the intensity of the magnetic field in (x), (y) and (z) directions respectively independently linearly, an electromagnetic wave to occur from the specimen is received by a receiving system 204 and after the detection, A/D conversion is executed. A processor 205 executes respective types of operations necessary to the picture reproduction and displays the reproducing result on a CRT 206 based on the measured data from a receiving system 204. The present sequence is for a three-dimensional imaging, the data are measured based on a pulse sequence and after the three-dimensional Fourier transform, the three-dimensional picture is obtained. Consequently, at the time of measuring one time, the blood vessel image can be obtained from various angles.

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