45 results about "Distribution Volume" patented technology

A method for convection-enhanced delivery (CED) of compounds and an apparatus for use with the method are provided. The apparatus, an ultrasound transducer cannula assembly (TCA) apparatus, can be used for the delivery of a compound to a target in the body such as a cells, tissue or organ in a healthy or diseased state. The ultrasound TCA apparatus comprises a transducer cannula assembly (TCA) and an ultrasound system to enhance penetration of molecules in the target. The ultrasound system may be portable and pocket-sized. The inclusion of ultrasound in the apparatus improves the distribution volume of material four to six times over a convection-enhanced delivery system without ultrasound. Since the targeting can be more focused, less compound is needed, thus lowering the potential for harmful effects to the host and host cells.

This invention relates to an underground ring-like pipeline network distribution transportation system in a city, which includes a transportation system with a safe and protection control mode including multiple ring-like networks connected by a transfer station, in which, the ring-like networks are divided into a first grade, a second grade or a third grade according to the distribution volume and sizes of the covering regions, multiple second grade ring-like networks in different covering regions and distribution volumes are connected with the first grade networks circling the whole city by the transfer station to make up of a basic network of the underground distribution system, and the transfer station is taken as the interface interacting with the ground and conveyances realize goods transportation among different loops.

The invention discloses an urban railway traffic random passenger flow loading method which comprises the following steps: 1.1, initializing, dividing one day into a plurality of time windows averagely, loading basic data, at the same time, setting the total number of the time windows as n, setting and marking an initial value of a variable t of the time windows as 1, and setting an initial value CN1 of road congestion charge as 0; 1.2, reading an origin and destination (OD) distribution volume of a tth time window, based on a basically effective path collection, calculating time of a first regular bus and a last regular bus of each path, judging the relationship of the time and the tth time window, and generating a dynamic effective path collection; 1.3, based on the dynamic effective path collection and an urban railway traffic passenger going-out path selection model, confirming a selected portion of each effective path between the OD, and obtaining a path flow; 1.4, performing statistics on a passenger flow of each section of a road, and updating the road congestion charge CNt+1; and 1.5, stopping the judgment, if the t is less than n, t=t+1 and continuing to iterate from the step 1.2, or, stopping the method.

The invention relates to a spray-volume vertical distribution measuring method and a special measuring device, and belongs to the technical field of agriculture and forestry engineering test. The method comprises the following steps: setting a fog droplet acquisition device and a liquid volume distribution measuring instrument, placing an atomizing machine or a spray head to be measured in front of the fog droplet acquisition device, starting a power device, intercepting droplets after the fog droplets enter the fog droplet acquisition device, depositing the droplets on each layer of liquid accumulating groove from the top to bottom, and reading accumulated liquid volume in each liquid accumulating tube after the droplets enter each liquid accumulating tube of the liquid volume distribution measuring instrument through a guide tube so as to acquire a fog droplet vertical distribution volume measuring result. The fog droplet acquisition device consists of a fog droplet intercepting flow passage, and the lowest part of the fog droplet intercepting flow passage is provided with the liquid accumulating groove; the liquid volume distribution measuring instrument consists of a row of vertical liquid accumulating tubes; and the lowest part of each fog droplet intercepting flow passage is connected to the liquid accumulating tubes through the guide tube in turn respectively. The invention not only provides accurate and efficient detection means for the detection of spray volume performance of plant protection machinery, but also provides scientific basis for the optimization of operation parameters of the atomizing machine.

The invention discloses a method and system for realizing the binding between an external website and a social network site. The method comprises the following steps of: S1, sending a binding request by a user through a binding inlet of the external website; S2, sending a binding web page to the user by a server of the social network site and prompting the user to input account information; S3, verifying whether the account information input by the user is accurate or not by the server of the social network site, returning to the step S2 if the account information is incorrect, and executing a step S4 if the account information is correct; and S4, detecting whether an account is bound to a certain account of the external site by the server of the social network site, if not, displaying successful binding, and if so, returning to the step S2. According to the method and system disclosed by the invention, the resource sharing between the social network site and the external site can be realized, the contents of interaction among users in the social network site are enriched, so that the information distribution volume of the users is increased, the interaction among the users is promoted, and the user experience is enhanced; and at the same time, the publicity and the influential power of the external site are improved.

The invention discloses a high-precision gas mixing system, which comprises a buffer gas tank, a gas distribution system I and a water tank, wherein the gas distribution system I comprises a variablefrequency blower I and at least one gas distribution tank I; the gas distribution tank I is connected with a controllable combustible gas input pipeline, a controllable air input pipeline and a controllable mixed gas output pipeline; and the bottom of the gas distribution tank I is connected with the water tank through a water pump I. The system realizes the process of mixing and exhausting combustible gas and oxygen by controlling the rise and fall of a water level in the gas distribution tank, and can also regulate the air distribution volume according to the component change of the combustible gas to meet the requirement of the optimum mixing ratio and achieve the aim of quick and uniform high-precision gas mixing, so that the gas is fully combusted to achieve the aim of harmless treatment. The system can also realize the matching use of two sets of gas distribution tank systems so as to realize a continuous gas mixing and exhausting process. The invention also provides a high-precision gas mixing method.

The invention discloses an application of a tulathromycin composition in treatment or prevention of bacterial diseases of poultry. The invention further discloses a pharmaceutical composition containing tulathromycin and a preparation method thereof, and the composition has wide distribution in a poultry body, large apparent distribution volume, long half-life period and slow elimination, has the characteristics of small dosage and good efficacy when being used for treating the bacterial diseases of the poultry, and further has broad market prospects and value when being applied in the preparation of the drugs which are widely clinically used in veterinary.

The invention relates to a piezoelectrically-driven jet type glue dispensing device. The piezoelectrically-driven jet type glue dispensing device comprises a piezoelectric driving mechanism, a jet mechanism, a glue solution delivery mechanism and a supporting connecting frame, wherein a piezoelectric actuator of the piezoelectric driving mechanism is fixed between left and right end faces inside a rhombic amplification module; and the upper end of the rhombic amplification module is fixedly connected with the supporting connecting frame, and the lower end of the rhombic amplification module is fixedly connected with the upper end face of a pin. The piezoelectric actuator drives the pin to vibrate at high frequency to drive a glue solution to be sprayed out of a nozzle, and the distribution speed and volume of the glue solution can be regulated in real time by changing the frequency and amplitude of an electric signal exciting the piezoelectric actuator. The piezoelectrically-driven jet type glue dispensing device is an ideal jet type glue dispensing device which is reasonable in composition and structure, reliable in connection, high in distribution speed and high in accuracy. The distribution volume of the glue solution can be flexibly adjusted on line. The piezoelectrically-driven jet type glue dispensing device is applied to the occasions where glue is required to be precisely, quickly and flexibly dispensed for microelectronic packaging, chip manufacturing and the like.

A multi-section feeding semi-regenerated catalysis reforming method includes that the first stream of raw material is passed into the first section reactor of a reforming device, the second stream of raw material is mixed with the product got out from the front section reactor, and then is passed into the rear section reactor, the second stream of raw material is 1 to 30 bulk percent of the total volume of the reforming reaction raw material, the cyclane content in the second stream of raw material is larger than that in the first stream of raw material. The method can reduce the carbon distribution on the catalyst in the rear section reactor, so as to enable the carbon distribution volume in each reactor in the reforming device to be distributed evenly, thereby the operation period of the whole semi-regenerated reforming device can be prolonged.

The invention discloses a tubular pile distribution control device, system and method. During a distribution process, when each pumping reversing cycle of a concrete pumping device is finished, the target speed of a tubular pile mould conveying device can be continuously corrected according to the pumping condition and volume deviation, and previous distribution volume deviation is compensated, so that on the basis that parking and waiting are not needed, a motor is better protected; impact on the power grid is reduced; the speed change of the tubular pile mould conveying device is relatively smooth; and the distribution is more uniform. Furthermore, the previous distribution volume deviation can be compensated, so that the effects that larger accumulation errors are avoided, and the control on tubular pile distribution is more precise are achieved. Besides, an additional weighing sensor is not needed, so that the cost is lowered; disturbance from a transducer and the like is avoided; and the precision of distribution control is further improved.

The invention discloses a measurement method for pharmacokinetic parameters based on constant-speed intravenous infusion and belongs to the technical field of pharmacokinetics. The measurement method comprises the steps that (1) a medicine is infused through a vein at a constant speed till a steady state is reached; (2) blood is sampled in another vein at different time points, and the plasma concentrations in the blood at the different time points are measured; (3) the plasma concentrations at the different time points in the step (2) and corresponding time are subjected to exponential regression, and the steady state plasma concentration and the elimination rate constant are calculated; (4) the elimination half life of the medicine is calculated based on the elimination rate constant obtained through slow constant-speed intravenous infusion in the step (3); and (5) the apparent distribution volume and the clearance rate of the medicine are obtained through calculating based on the steady state plasma concentration obtained through slow constant-speed intravenous infusion in the step (3) and the total amount of the medicine in a body in the steady state. The measurement method is reasonable in design, easy to operate and more accurate in calculation result.

The invention discloses a port-protecting circuit integrating and packaging element and a manufacturing method thereof. A plurality of circuit modules are packaged by longitudinally distributed base structures and conductive connectors of the bases; the superficial area of a printed circuit board which is occupied by elements when transversely distributed is reduced; the distribution distance among the elements and the distribution distance among printed circuit board (PCB) lines are reduced; the integrated structure is simple; the accommodating space of electronic equipment is reduced; in addition, the welding produces of application clients can be reduced through connection of the conductive connectors; the chip production time of the PCB can be shortened; and the production efficiency is high. In addition, the distribution volume of a protecting circuit is reduced; and at least one circuit protecting element is integrated to improve the port protection property, so that the development of equipment miniaturization in the field of port protection is realized. By regular integrated distribution of the longitudinal connectors, parasitic inductance and capacitance caused by external welding are reduced; the overall performance of a protection module and the product stability are improved; and the port-protecting circuit integrating and packaging element is applied to the field of overvoltage protection of port circuits, so that the contradiction between the small space and required high through-flow can be solved.

The present invention provides a method for measuring the distribution of the glue-pointing volume, and includes the following procedures: A. providing a glue-pointing device and a component to be glue-pointed; B. using the glue-pointing device to point glue on the component to be glue-pointed; C. determining a datum mark on the axes of a lens module; D. controlling the pinhead to move to the first edge point of gluewater, and recording the coordinate values of the three axes; E. controlling the pinpoint to move from the first edge point to the second edge point, and recording the coordinate values of the three axes of the second edge point, ensuring that the first edge point, the second edge point, and the axes of the lens module are in a same plane; F. according to the coordinate values of the three axes of the first edge point and the second edge point, calculating the distribution volume of gluewater on the parallel direction to the axes and the distribution volume of gluewater on the perpendicular direction to the axes; G. rotating the glue-pointed component, repeating the procedures of the D-F, obtaining a plurality of distribution volume of gluewater on the parallel direction to the axes and on the perpendicular direction to the axes, and then evaluating the distribution state of gluewater. The method uses the prior glue-pointing device to measure the distribution of the glue-pointing volume, and is simpler and rapider.

An injection amount of a reducing agent such as urea water is properly and adequately controlled to keep a NOx reduction ratio as high as possible. Disclosed is a method for controlling an exhaust emission control device wherein urea water 17 (reducing agent) is added to selective reduction catalyst 10 incorporated in an exhaust pipe 9 so as to reduce and purify NOx. A first-order lag response model corresponding to the exhaust temperature upstream of the catalyst 10 is used to estimate catalyst temperature for each of cells into which the catalyst is minutely divided. Cell volumes for each of temperature zones are summed up on the basis of the estimated temperatures for the cells. The cell volume summation for each of the temperature zones is divided by the whole volume of the catalyst to determine temperature distribution volume ratio. The temperature distribution volume ratio for each of the temperature zones is multiplied by a reference injection amount of the urea water 17 which is determined in consideration to an operation status of a current engine 1 on the assumption that the catalyst temperatures are all within the temperature zone. The calculated values for the respective temperature zones are summed up into a directive injection amount of the urea water 17.

The invention discloses a design method of a two-dimensional quasiperiodic optical super lattice structure. The method comprises the steps that 1, the three non-linear processes are two frequency doubling processes of frequency down conversions and cascade connections; 2, the wave vector lost distribution volumes in the three non collinear processes in step 1 are used as three reciprocal lattice vectors in an inverted space of a two-dimensional quasi periodicity optical super lattice, the sizes of the three reciprocal lattice vectors are decided by a nonlinear process, the directions are optimized using the best Fourier coefficient of the structure; 3, three basis vectors in a two-dimensional positive space are obtained according to the orthogonality relation of the reciprocal lattice vectors obtained in step 2, the three basis vectors constitute three parallelograms, the three parallelograms are strewn throughout the positive space with quasiperiodic sequences, the vertex of the parallelogram is used as the center of a round domain of the two-dimensional quasiperiodic optical super lattice, and the two-dimensional quasiperiodic optical super lattice is obtained. Non-collinear multi-wavelength laser is achieved, complicated spectral device is not required, which provides more convenience for fields such as quantum optics.

The present invention relates to a cucurbitacin B liposome drug and preparation thereof. The invention provides a cucurbitacin B nanometer liposome drug and a preparation method thereof. According to the present invention, a passive drug delivery way is used, and a substance polyethylene glycol containing polyhydroxy groups is linked to the phospholipid phosphoric acid group to modify so as to prepare the long-circulating nanometer liposome, wherein the structural modification effect is to protect the liposome from being identified and uptaken by opsonin in blood so as to reduce the liposome clearance rate and prolong the residence time in the blood, such that the action time of the drug is prolonged, the liposome can effectively reach the lesion, and the selectivity on the targeted tissue can be improved; the preparation prepared by the preparation method has characteristics of good physical stability, good chemical stability, long residence time in the body, small distribution volume in the body, and high blood drug concentration in the body; the drug of the present invention can be used for treatment of various types and various stages of liver cancers; and the cucurbitacin B liposome drug has characteristics of scientific formula, convenient use, good stability and low toxicity, and the preparation method is suitable for large-scale production.

The invention belongs to the technical field of hemodialysis, and discloses a hemodialysis monitoring and nursing control system and method based on the Internet of things. A hemodialysis monitoring and nursing control system based on the Internet of things comprises a heart rate detection module, an arteriovenous pressure detection module, a blood flow detection module, a temperature detection module, a central control module, a bacteria filtration module, a dialysis module, an internet-of-things communication module, an evaluation module, an alarm module and a display module. An urea kineticmodel is analyzed by the evaluation module, the urea clearance rate, the dialysis time and the blood urea nitrogen before and after dialysis of a dialyzer are used for calculating urea distribution volume, and therefore, the protein decomposition rate is calculated, in consideration of individual conditions of different patients, a calculated result is consistent to an actual proteolysis condition; and meanwhile, the safety of hemodialysis is improved through the alarm module.

The invention discloses a method for improving the etching repeatability of a gallium nitride (GaN) high electron mobility transistor (HEMT) grid trench. The method comprises the following steps of: enlarging the size of the inner diameter of an inductively coupled plasma (ICP) tray; increasing the height of the ICP tray; and bonding a GaN epitaxial slice to be etched on slide glass and etching the grid trench. By the method, the influence of the thickness of the GaN epitaxial slice on grid trench etching can be eliminated, the plasma bombardment damage during GaN HEMT grid trench etching is reduced and direct current and high frequency characteristics of a device can be improved by enlarging a plasma distribution volume in a reaction cavity body of an ICP etcher, reducing the density of plasmas and shortening an acceleration distance of the plasmas.

The invention relates to a dry body weight evaluating method based on a dynamic model, and a system, wherein the method and the system belong to the data processing field. The method comprises the following steps of after obtaining regular blood testing data, performing calculation by means of the dynamic model, and obtaining an after-dialysis uric acid distribution volume; calculating a standarduric acid distribution volume according to the after-dialysis uric acid distribution volume and a body surface area; calculating the dry body weight according to the standard uric acid distribution volume; and displaying and outputting the dry body weight which is evaluated once. Compared with the prior art, the method and the system have advantages of overcoming a complicated problem in measuringextracellular fluid, calculating a dry body weight evaluating result of the patient just through testing data and dialysis records, and ensuring an optimal ideal body weight of the patient after dialysis.

The invention relates to a household biomass gasifier comprising a gasifier body, an AC / DC variable speed blower and a fuel gas burner, wherein the furnace body converts fuels into combustible gas with a low heat value, the AC / DC variable speed blower sends air into the furnace body, and the fuel gas burner burns the combustible gas for heat supply; the blower is provided with two air outlet pipelines, wherein one air outlet pipeline is led to the position below a grate bar at the lower part of the gasifier body, the air is sent to a gasification chamber through a plurality of air inlet holes on the grate bar, and the other air outlet pipeline is connected to the rear ends of two-stage purifying devices through air distribution pipelines and is connected with a combustible gas transmission pipe; a fuel gasification chamber at the upper part in the gasifier is connected with the two-stage purifying devices through air output pipes, the combustible gas processed through a first-stage purifying device and a second-stage purifying device and the air transmitted through the blower are mixed at the rear end of the second-stage purifying device for forcible air distribution, wherein the air distribution volume is that 15-20 percent of air is mixed into 1m<3> of combustible gas, and the mixed combustible gas enters a core inside the fuel gas burner in a tangential direction through a mixed fuel gas inlet pipeline; and the gasifier has the advantages of multiple fuels, easy operation and environmental protection.

The invention relates to a dialysis adequacy protein decomposition rate assessment method and system. The method includes steps: calculating and obtaining a urea distribution volume according to obtained latest biochemical detection data; calculating a urea generating speed according to the urea distribution volume and a specified parameter; calculating a standardized protein decomposition rate according to the urea generating speed and the weight; and displaying and outputting a standardized protein decomposition rate of one adequacy assessment. Compared with the prior art, according to the method and system, the standardized protein decomposition rate of the dialysis adequacy of a patient is calculated according to test data in cooperation with a dialysis record, the patient can achievethe best comfort after dialysis, and the ideal dialysis adequacy is finally realized.

A method for evaluating seed distribution uniformity after seeding operation belongs to the technical field of agricultural machinery and comprises the following steps: establishing a three-dimensional coordinate system with an X axis as a seeding line center, a Y axis perpendicular to the X axis and a Z axis as a seeding line center perpendicular to a surface water plane; based on a known seedingtheoretical grain spacing Deltax, measuring the seeding grain spacing a<i-1>, seed and row center distance deviation Yi and sowing depth Zi; calculating a longitudinal coordinate xi of an actual sowing point; obtaining a longitudinal index Xi by solving a quadratic sum S minimum value of a longitudinal distance between a theoretical sowing point and an actual sowing point; calculating the standard deviation of Xi, Yi and Zi; Drawing seed horizontal plane and vertical plane distribution scatter diagrams, and calculating the distribution area of each plane; Drawing a seed three-dimensional space distribution scatter diagram, and calculating the distribution volume; By comparing the standard deviation, the seed distribution scatter diagram, the distribution area and the volume of each direction index, a theoretical basis can be provided for comparing, optimizing and improving a seeder or a soil touch part.

The invention discloses an adjustable pulse water distributor and relates to the technical field of water distributors. A water distribution main pipe is installed in the middle of the bottom of an inflow water collection tank, and the side wall of the water distribution main pipe is communicated with the lower end of an exhaust pipe; a bell jar is arranged in the inflow water collection tank, a piston is arranged in the bell jar, and one end of a siphon breaking pipe is communicated with the lower side wall of the bell jar. According to a method of the water distributor, quickly-flowing water flow is used for exhausting air in the water distribution main pipe through the exhaust pipe to make a certain vacuum degree formed in the water distribution main pipe; under the action of barometric pressure inside and outside a pipeline, water in the water collection tank enters the water distribution main pipe and then is discharged into a pool to stir up sludge at the bottom of the pool, so that the sludge and sewage are continuously and fully mixed, and sludge active bacteria and organic matter in the sewage are subjected to a sufficient contact reaction. The adjustable pulse water distributor has the advantages of being free of power equipment and energy consumption and the like; by adjusting the water distribution volume and cycle, it is guaranteed that the sewage and the sludge active bacteria are fully mixed, and the removal rate of the organic matter in the sewage is increased.

An insertion device and method of using and manufacturing an insertion device is shown, wherein the insertion device is capable of distributing a media over a large distribution volume inside a patient while reducing the amount of tissue disturbed by the procedure. Also shown is a computer-readable medium with instructions stored thereon, the instructions when executed operable to cause generation of a set of data for use with an insertion device. An insertion device and methods are shown that allows a series of iterations to be performed within a single insertion procedure that distributes media, such as cells for cell therapy, over a large volume.

The invention provides a human brain local water distribution volume determination method with a front A% area as the reference area. The method comprises the steps of firstly performing PET / H2150 dynamic scanning on a human brain; secondly calculating the relative water distribution volume value P1 of each to-be-determined part in the human brain with the front A% area of the human brain as the reference area; thirdly, performing normalization processing of the human brain after calculating the relative water distribution volume value P1 of each part in the human brain. An obtained value is different from the absolute water distribution volume of the part only by a proportional constant, and the value is used as the index of the absolution water distribution volume. The method requires no dynamic arterial blood drawing, possibly-fuzzy template or model, and manual intervention such as complex correction, thereby facilitating automatic processing of a computer; the determined result does not differ from that of an accurate local water distribution volume quantitative determination method, so that the method enjoys a bright application prospect.

Apparatus and control methods for determining a distribution volume of at least one uremic substance in a dialysis patient are disclosed. The apparatus may include a dialyzer, an optional flow rate measuring system for detecting the flow rate of a dialysis fluid through the dialyzer, a dialysis fluid measuring system for detecting at least one dialysis fluid parameter that depends on the at least one substance in the dialysis fluid, and a computer for establishing a dialysis dose based on the dialysis fluid parameter and for establishing the distribution volume based on the dialysis dose taking a clearance factor and dialysis duration into account.

The invention relates to an electric distribution quantitative device. The electric distribution quantitative device is used for being connected to two ports of a flow channel and carrying out quantitative distribution on liquid. The electric distribution quantitative device comprises an upper fixing sheet, a lower fixing sheet, a quantitative rotor and a driving motor, wherein the upper fixing sheet is provided with a plurality of first holes and is used for being connected to one port of the flow channel, the lower fixing sheet is arranged on one end surface of the upper fixing sheet, is connected to the upper fixing sheet and is provided with a plurality of second holes, the multiple second holes are arranged corresponding to the first holes, the lower fixing sheet is used for being connected to the other port of the flow channel, the quantitative rotor is arranged between the upper fixing sheet and the lower fixing sheet, rotates around the axes of the upper fixing sheet and the lower fixing sheet and is provided with a plurality of quantitative holes with different apertures, the volume of the multiple quantitative holes corresponds to the quantitative distribution volume of the liquid, and the driving motor is connected to the quantitative rotor. According to the electric distribution quantitative device, the quantitation of the liquid can be rapidly completed by adoptinga cutting method, the quantitative speed is high, and the quantitative precision is high.

The embodiment of the invention discloses a green citrus planting management method which comprises the following steps of: (1) optimization of a field; (2) scientific fertilization; (3) shaping and trimming, wherein it is suitable to keep the pruning tree trunk height of a young citrus tree at 25-40 cm, the distribution volume of main branches and auxiliary branches is controlled in a mode of causing the number of the main branches to be 3 to 4, causing the number of side main branches growing beside the main branches to be 5 to 6, and causing the number of lateral branches formed by growth of each auxiliary main branch to be 7 to 8; after the pruning, the branches are in a scattered state, and the crown grows to be in a round head shape; after the citrus trees reach an adult phase, attention should be paid to that pinching pruning is performed in summer to protect the tree trunks from too vigorous growth which affects the fruiting rate, the main branches of citrus trees need to be pruned in spring and autumn, heavy branches are removed, and some branches and tiny branches which are subjected to bad growth, weakness, pests and diseases also need to be cut off, to ensure adequate illumination is obtained inside the citrus trees; and (4) disease and pest control.

Urea water is added to a catalyst in an exhaust pipe for purification. A first-order lag response model corresponding to the exhaust temperature upstream of the catalyst estimates catalyst temperature for each of divided cells of the catalyst. Cell volumes for each of temperature zones are summed on the basis of the estimated temperatures for the cells. The summation for each temperature zone is divided by the whole catalyst volume to determine temperature distribution volume ratio. The ratio for each of the temperature zones is multiplied by a reference injection amount of the urea water determined in consideration to a current engine operation status on the assumption that the catalyst temperatures are all within the temperature zone. The calculated values for the respective temperature zone are summed into a directive injection amount of the urea water.

The invention discloses a human brain local water distribution volume measuring method using first A% region as a reference region. The method is characterized by comprising the following steps: step 1, performing PET / H2<15>O dynamic scanning on a human brain; step 2, using the first A% region as a reference region, calculating relative water distribution volume value P1 of each to-be-determined position in the human brain; step 3, after the relative water distribution volume value P1 of each position of the human brain is obtained, performing normalization processing on the human brain as needed; and difference between an obtained numerical value and an absolute water distribution volume of the position being a proportional constant, and using the obtained numerical value as an index of the absolute water distribution volume. The method does not need to dynamically draw arterial blood and does not need a template or a model which may distort, and complex correction and other manual intervention are not needed, so that the method can realize automatic processing of computers. A measured result and an accurate local water distribution volume quantitative measuring method do not have deviation, and the method has good application prospect.