Abstract:
A mammography device 1 is an apparatus for acquiring internal information of a breast B of an examinee A by radiating light to the breast B and detecting the diffused light, and includes a container 3 configured to surround the breast B and a plurality of optical fibers 11 attached to be directed inward in the container 3 and configured to perform radiation and detection of light. The container 3 has a base member 30 having an opening 30a, a plurality of annular members 40 continuously disposed to come in communication with the opening 30a, and a bottom member 50 disposed inside the annular member 40 spaced the farthest distance from the base member 30. The annular members 40 and the bottom member 50 are configured to relatively displace the adjacent annular member 40 on the side of the base member 30 or the base member 30 in a communication direction. Some of the plurality of optical fibers 11 is attached to the plurality of annular members 40.
Abstract:
The bioinstrumentation apparatus 10 includes a light irradiation unit irradiating a measurement region B with light, a light detection unit detecting diffused light from the measurement region, and a computing unit 14 generating a reconstructed image for the interior of the measurement region. The computing unit 14 calculates J coefficients w j set for every pixel of the reconstructed image and more than 0 and not more than 1 (where J is the number of pixels of the reconstructed image) and carries out successive approximation computation by the following iterative formula x j k + 1 = x j k + w j �¢ d j k (where k is an integer from 1 to N, N is the number of times of iterative computation, x j (k) is a pixel value of the jth pixel on the kth iterative computation, and d j (k) is an update amount of the jth pixel on the kth iterative computation) to generate the reconstructed image. Thereby, there are provided a bioinstrumentation apparatus and an image generating method capable of suppressing a difference in spatial resolution and noise characteristics depending on a position inside the measurement region to generate an image which is uniform to a greater extent.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for assessing vascular permeability sthenia inhibitory effect in vascular endothelial cells of test substance.SOLUTION: A method comprises a process for contacting a test substance to a vascular endothelial cell, a process for contacting an agent which increases vascular permeability of the vascular endothelial cell to a vascular endothelial cell, and a process for measuring a top height of the vascular endothelial cell, wherein the top height of the vascular endothelial cell is an index of vascular permeability sthenia inhibitory effect of the vascular endothelial cell in the test substance.
Abstract:
PROBLEM TO BE SOLVED: To stabilize the flow of an interface agent inside a vessel in a mammographic apparatus of such a type that the interface agent is circulated inside/outside of the vessel. SOLUTION: The mammographic apparatus 1 obtains the information on the inside of a breast by irradiating the breast of a subject with light and detecting the diffused light. The mammographic apparatus 1 comprises an inner vessel 31 surrounding the hanging breast; an outer vessel 32 constituting a gap 34 with the inner vessel 31; a partition wall 33 dividing the gap 34 into an inflow chamber 35 and an outflow chamber 36; piping 13e for injecting the interface agent I into the inflow chamber 35; and piping 13a for discharging the interface agent I from the outflow chamber 36. The inner vessel 31 has an interface agent inlet 14 for letting the interface agent I in the inflow chamber 35 flow into the inner vessel 31 and an interface agent outlet 15 for letting the interface agent I in the inner vessel 31 flow into the outflow chamber 36. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To simply and rapidly measure the constitutional ratio of serum protein. SOLUTION: Serum to which 0.5 μg/ml of indocyanine green(ICG) is added is housed in a test tube 2 as a measuring sample 1 to be irradiated with pulse laser with a wavelength of 790 nm from an exciting light irradiation means 3. ICG mainly bonded to lipoprotein in serum emits fluorescence of a fluorescence life profile corresponding to the constitutional ratio of lipoprotein. This fluorescence is guided to a fluorescence detector 5 through a spectral means 4 and fluorescence life is calculated to be sent to an analyser 6. The analyser 6 calculates the constitutional ratio of lipoprotein from the calculated fluorescence life to display the same on a display device 7. By this constitution, the constitutional ratio of liporotein can be accurately inspected simply within a short time as compared with a conventional method.
Abstract:
PROBLEM TO BE SOLVED: To enable the calculation of the accurate absorption coefficient of a sample regardless of the largeness or smallness of the absorption coefficient. SOLUTION: This device is provided with light source 21 which emits light to a light projection part, a light projecting side optical switch 22 with one input and n (n is natural number) outputs, and n pieces of optical fibers F1 to Fn. A light receiving part is provided with m (m is a natural number) pieces of optical fibers B1 to Bm, a light receiving side optical switch 32 with m inputs and one output, and a light detecting part 31. Here, the light projecting side optical switch 22 and the light receiving side optical switch 32 are switched by a control part 11 to project and to receive light selectively through each optical fiber. From the observed value of the intensity of transmitted light observed by the detecting part 31 and stored in a storage part 13 and from the length distribution of the light path of each volume element calculated by Monte Carlo method, the distribution image of the absorption coefficient of a body to be tested 40 is calculated and displayed at a display part 14.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical measuring method and an optical measuring device capable of determining the true center of gravity of a light wave-form and acquiring the internal information of a measured object in a short time. SOLUTION: This optical measuring device is provided with a light source 10 outputting a probe light, light guiding means 12, 14, a light detecting means 16, center of gravity calculation sections 18, 20, and a difference calculation section 30. The difference calculation section 30 subtracts the center of gravity of the device function from the center of gravity of the observed wave-form, thus the true center of gravity of the probe light wave-form is simply determined, and a desired optical measurement can be conducted in a short time.
Abstract:
PURPOSE:To obtain the titled composition, capable of being selectively incorporated into tumorous cells and exhibiting cellulicidal effects of a photosensitive substance by subsequent irradiation with light, by blending an oily contrast medium with the photosensitive substance soluble therein. CONSTITUTION:A composition obtained by blending an oily contrast medium, preferably iodinated poppy seed oil fatty acid ester (particularly lipiodol which is ethyl ester) with a photosensive substance soluble therein, preferably a photosensitive substance excited by rays having high tissue penetrability (particularly rays at >=650nm wavelength), e.g. pheophorobide a or phthalocyanine derivative. The above-mentioned composition is administered and rays, preferably laser beams are irradiated after 6-24hr to excite the photosensitive substance and activate oxygen molecules. Thereby active oxygen is induced to exhibit cellulicidal effects on tumorous cells.