WO2009147931A1 - 粒子画像解析方法および装置 - Google Patents
粒子画像解析方法および装置 Download PDFInfo
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- WO2009147931A1 WO2009147931A1 PCT/JP2009/058866 JP2009058866W WO2009147931A1 WO 2009147931 A1 WO2009147931 A1 WO 2009147931A1 JP 2009058866 W JP2009058866 W JP 2009058866W WO 2009147931 A1 WO2009147931 A1 WO 2009147931A1
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Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N15/1456—Electro-optical investigation, e.g. flow cytometers without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals
- G01N15/1459—Electro-optical investigation, e.g. flow cytometers without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals the analysis being performed on a sample stream
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- G01N15/1433—
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Electro-optical investigation, e.g. flow cytometers
- G01N15/1468—Electro-optical investigation, e.g. flow cytometers with spatial resolution of the texture or inner structure of the particle
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- G—PHYSICS
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- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/487—Physical analysis of biological material of liquid biological material
- G01N33/493—Physical analysis of biological material of liquid biological material urine
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- G01N15/1409—
Definitions
- the present invention relates to a particle image analysis method and an image analysis apparatus that take a particle image suspended in a liquid and analyze the particle from the obtained image.
- the sheath fluid which is a cleaning agent
- the sample fluid is made to have a very flat flow.
- a flow type particle image analysis apparatus using a flow cell for example, Patent Document 1.
- a sample moving in a flow cell is photographed by, for example, a video camera, and the captured still image is image-processed to classify and count particles in the sample.
- Patent Document 2 describes a method in which a photographed particle image is classified by particle size or the like and displayed on a screen in a flow image analysis apparatus, and an operator classifies the particles.
- Patent Document 3 describes a method for reducing the review time by mounting a function for reviewing only the types of components designated in advance when the operator classifies particles.
- JP-A-4-72544 JP 60-38653 A Japanese Patent Application Laid-Open No. 8-210961
- the image analysis device can classify even small components by optically increasing the magnification.
- a large component 50 micrometers or more
- a measurement mode that changes the magnification is added.
- urinary sediment examination is a morphological examination, it is difficult to process 100% of specimens on the device side from a clinical standpoint. It is automatically classified as primary screening, and detailed classification is performed by secondary screening through image review. It is carried out. There is a limit to image review, and there will be no end to specimens that will eventually go to microscopy. Even if an analyzer is introduced, if there are many specimens to be sent to the microscope, the cost of the microscope examination and the labor cost will be doubled. Therefore, it is strongly desired that few specimens are sent to the microscope.
- An object of the present invention is to provide a particle image analysis method and an image analysis apparatus capable of observing a small component less than or equal to an image capturing object in an entire image while improving the efficiency of review with the cut particle component without greatly changing the apparatus configuration. Is to realize.
- the present invention is configured as follows.
- the sample is photographed, the whole image of the photographed sample is stored in the whole image memory, the particle components and the number in the sample are extracted from the whole image of the photographed sample, and the extracted particle components are characterized.
- the component stored in the cut-out memory is corrected and the concentration correction is performed.
- an imaging unit for imaging the sample an entire image memory for storing the entire image of the sample captured by the imaging unit, and the number of particle components in the sample are extracted from the entire image of the captured sample.
- the particle analysis unit, the feature extraction unit that extracts the particle components in the sample from the whole image of the photographed sample, and the particle components extracted by the feature extraction unit are analyzed based on the feature parameters and classified for each component type
- An arithmetic processing unit for calculating the concentration of the component, a cut-out memory for storing the classified particle component and its concentration, a display means for displaying the entire image stored in the entire image memory, and additional or changed particle component information.
- a means for detecting particles passing upstream of the imaging region and a means for determining whether or not to take a particle image based on the detection signal are set, and a plurality of conditions for detecting particles are set, and one of the stages is imaged. For photography. Each time a particle passes, the number of detections in the plurality of stages is counted during sample measurement. By calculating the respective count numbers and their differences or ratios, there is provided a logic for determining whether or not the entire image is captured and the number of captured images, and whether or not the entire image is displayed and how many are displayed.
- FIG. 1 is an overall schematic configuration diagram of a flow method particle image analysis apparatus according to a first embodiment of the present invention. It is explanatory drawing of the structure part centering on the flow cell in a flow type particle image analyzer. It is explanatory drawing of the internal function of the image memory for review and a central control part. It is a whole processing flowchart of particle analysis. It is explanatory drawing of the process which acquires the image
- FIG. 1 is an overall schematic configuration diagram of a flow system particle image analyzer according to a first embodiment of the present invention.
- the flow particle image analysis apparatus includes a flow cell 100, an image capturing unit 101, a particle analysis unit 102, a particle detection unit 103, and a flow system control unit 124.
- the image photographing unit 101 is used in common with the flash lamp driving circuit 6, the flash lamp 1, the field lens 2, the field stop 11, the aperture stop 12, the microscope condenser lens 3, and the microscope objective lens 5 (particle detection unit 103). ) And a TV camera 8.
- the particle analysis unit 102 also includes an image memory 24, an image processing control circuit 25, a feature extraction circuit 26, an identification circuit 27, a particle number analysis unit 40, a central control unit 28, and a review particle image memory 29. And a display unit 50 and an operation unit 60.
- the central control unit 28 is connected to the qualitative analysis device 91 via the host computer 90. In this configuration, the analysis result obtained by the qualitative analysis device 91 is taken into the central control unit 28 via the host computer 90, and is used to determine the qualitative item from the photographed image data.
- the particle detector 103 includes a semiconductor laser source 15, a collimator lens 16, a cylindrical lens 17, a reflecting mirror 18, a minute reflecting mirror 19, a microscope objective lens 5, a beam splitter 20, a diaphragm 21, It has a light detection circuit 22 and a flash lamp lighting control circuit 23.
- the laser light from the semiconductor laser source 15 is converted into a parallel laser beam 14 by the collimator lens 16, and is passed through the reflecting mirror 18 by the minute reflecting mirror 19 disposed between the microscope lens 3 and the flow cell 100.
- the particle detection area 70 (shown in FIG. 2) is irradiated.
- FIG. 2 is an explanatory diagram of the components centering on the flow cell 100.
- the flow control of the apparatus will be described with reference to FIG.
- the sample 110a is sucked by the sampling nozzle 109, and the sample 110a is discharged into the dyeing tank 112 from which the dyeing liquid 111 has been discharged in advance.
- the dyed sample 110 b in the dyeing tank 112 is sucked by the direct sampling nozzle 107 of the direct sampling mechanism 108 and injected into the flow cell 100.
- the sheath liquid 105 in the sheath liquid container 104 is injected into the flow cell 100 while sandwiching the stained sample 110b with the syringe mechanism. Therefore, the sheath liquid inlet of the flow cell 100 is divided into two.
- the thickness of the stained sample in the measurement channel is adjusted according to the flow rate ratio between the stained sample 110b and the sheath liquid 105. For example, when the flow rate of the stained sample 110b is constant, if the flow rate of the sheath liquid 105 decreases, the thickness of the ultra flat sample flow increases while the width remains constant, and when the flow rate of the sheath liquid 105 increases, the width becomes constant. If it remains the same, the thickness of the super flat sample flow is reduced.
- the size of the component is several micrometers to 200 micrometers, so the width of the flow cell 100 needs 200 to 350 micrometers.
- the thickness dimension is a flat sample flow of several micrometers to several tens of micrometers.
- the particle imaging region 70 has a quadrangular shape with one side having substantially the same length as the sample flow width.
- the obtained captured image 80 has a width and length of about 250 to 300 micrometers.
- the particle detection unit 103 includes an analysis unit that detects the presence / absence of particle passage and the necessity of performing imaging and measures the number of particles at a plurality of levels.
- the particles in the sample 110 to be measured cross the laser beam, the laser light is scattered, and this scattered light is collected by the microscope objective lens 5 used for taking a particle image, reflected by the half mirror 20, and passed through the diaphragm 21. Later, it is converted into an electrical signal by the photodetector 22 and the photodetector circuit 31.
- the level detection circuits 32, 33, 34, and 35 and the time width measuring unit 36 that digitally output the particle signals measure the time width of the particle detection signals.
- the laser light source 15 is always turned on, and it is observed that particles in the sample always pass through the detection region.
- the particle is determined to be an imaging target particle, and the particle number analysis unit 40 determines the number of particles.
- the count is controlled by the central control unit 28, and the flash lamp lighting control circuit 23 and the flash lamp driving circuit 6 cause the flash lamp 1 to emit light at a timing such that the image of the particles stops at a predetermined position of the image capturing field. Particles in the flow cell 100 are detected, and the image capturing unit 101 acquires an image 80.
- a plurality of particle determination logics are prepared, and the level detection circuits 32 to 35 set different detection levels, and when the pulse width is equal to or greater than a predetermined width when the level is equal to or greater than a predetermined level.
- the number of particles is counted by the particle number analyzer 40.
- the image data signal output from the TV camera 8 is stored at a predetermined address in the image memory 24 under the control of the image processing circuit 25.
- the data stored in the image memory 24 is read out under the control of the image processing control circuit 25 and is input to the identification circuit 27 via the feature extraction circuit 26 to perform image processing. Results are supplied. What is supplied is the particle classification result and particle identification feature parameter data used for particle classification.
- Particle classification and identification logic is automatically performed by a normal pattern recognition process.
- the image processing result, the measurement conditions, and the image information subjected to the image processing are sent from the central control unit 28 to the particle analysis unit 40.
- the particle analysis unit 40 examines the correspondence relationship between the detected particle and the particle classification result, and finally Summarize the classification and identification results of various particle images.
- the result is returned to the central control unit 28 and output and displayed on the display unit 50 as necessary.
- the operator selects the type of particle that the operator wants to review from the operation unit 60, is transmitted to the identification circuit 27 via the central control unit 28, and the classification and identification result and setting by the identification circuit 27 are set. Only when it matches the review particle name, the corresponding particle image is sent from the image memory 24 to the review image memory 29 and sequentially accumulated.
- the review image memory 29 is dedicated to the particle image to be reviewed with respect to the particle image, and the particle image accumulated in the review image is the same particle type from the review image memory 29 via the central control unit 28 after the measurement of the sample is completed. Each time it is displayed on the display screen of the display unit 50 and is used for review by the operator.
- the particle concentration calculation in the sample and the field-equivalent particle number calculation are performed, and the analysis result is returned to the central control unit 28.
- FIG. 3 is an explanatory diagram of internal functions of the review image memory 29 and the central control unit 28.
- the review image memory 29 includes an entire image memory 291 and a cut-out image memory 292.
- the central control unit 28 also includes a result image correction processing unit 281 that captures and corrects an image from the entire image memory 291 and the cut-out image memory 292 according to an operation command from the operation unit 60, and a command from the result correction processing unit 281.
- An arithmetic processing unit 283 that performs arithmetic processing according to the above, an analysis result memory 284 that stores a result (analysis result) processed by the arithmetic processing unit 283, and an operation control unit 282 that controls operations of the display unit 50 and other units. I have.
- the measurement result is sent to the host computer 90. Further, there is provided means for receiving the same sample result of the urine qualitative analyzer 91 using the test strip method from the host computer 90 before measurement.
- Step 1 injection of the stained sample 110b into the flow cell 100 is started.
- the image is taken by the TV camera 8 (Step 1, Step 2).
- the image processing control circuit 25 separates the photographed image 80 into a background and a component, that is, binarizes (Step 3).
- each separated component is numbered and classified, that is, labeling is performed (Step 4).
- Step 5 feature parameters such as size, color information, and circularity are calculated for each component.
- small components less than 3 micrometers are rejected.
- Components of the remaining image are identified from the feature parameters by a neural network (Step 6).
- the identified image is cut out only in the component area, collected for each component as a review image, and stored in the cut-out memory 292 of the review image memory 29 (Step 7).
- a set number of images of the entire shooting area are acquired and stored in the entire image memory 291 of the review image memory 29 (Step 8).
- a number is assigned to each component in the image of the entire shooting area in the shooting order ((A) in FIG. 5). This corresponds to the labeling step 4 in the flow of FIG.
- Particle components B, C, D, E, G, I, J, and H which are small components, are rejected in size, and particle components A, F, K, L, M, and N are stored in the cut-out memory 292 as cut-out images. .
- the image becomes a review image. This corresponds to Step 7 in FIG. These are rearranged for each type of component (red blood cell, white blood cell, squamous epithelium, etc.), and a window is displayed for each component ((B) and (C) in FIG. 5).
- FIG. 6 shows a processing flowchart in the case where there are additional components
- FIG. 7 shows a processing flowchart in the case where the components are distributed throughout the sample and the measurement results of the components are replaced. Since the entire image of the imaging region may be taken during measurement for storage, it may be separated from the image for classification, or the image used for classification may be used for display.
- the cut image is reviewed before the image review of the entire shooting area (Step 101).
- the result correction processing unit 281 reads out the image from the cut-out memory 292 and displays it on the display unit 50 according to an instruction from the operation unit 60 by the operator.
- the operator looks at the image collected for each component, and corrects the particles determined to be erroneously identified to the correct component item using the operation unit 60.
- the white blood cell concentration increases by 0.2 cells / microliter. In this way, correction is performed by moving density information held for each cut image. In other words, when one red blood cell was corrected to a white blood cell, the red blood cell was 2.0 / microliter and the white blood cell was 1.0 / microliter before the review, but the red blood cell was 1.8 after the review. / Microliter, leukocytes are 1.2 cells / microliter.
- Step 102 an image of the entire shooting area is displayed (Step 102). This is read out from the entire image memory 291 by the result correction processing unit 281 and displayed on the display unit 50.
- the operator observes the displayed whole image, and when a component to be added (an overlooked component) appears, specifies the component and registers the number (Step 103). Once registered, the concentration of the sample is recalculated by the arithmetic processing unit 283 (Step 104).
- the result correction when adding one tubular epithelial cell is 0.0 / microliter tubular epithelial cell before review, and 0.2 / microliter after review.
- a comment for example, a possible bacterial name is input to the comment field via the operation unit 60 (Step 105).
- Step 201 correction of the cut image
- Step 205 comment input
- the case where the components are distributed throughout the sample means a case where bacteria and amorphous salts of a size that is rejected in the cut image can be observed in the image of the entire imaging region. That is, in the example shown in FIG. 5, the rejected small components (components B, C, D, E, G, H, I, and J) can be observed in the entire imaging region image.
- the entire region image is displayed (Step 202). For example, when bacteria can be observed in the entire image and distributed over the entire sample, a process of replacing the concentration of the component is performed.
- An image 80 of the entire imaging region (shown in FIG. 8) is previously incorporated with the area of the imaging region and the thickness information of the sample.
- An area is set on the display unit 50 via the result correction processing unit 281 with a mouse or a touch pen of the operation unit 60.
- the set area 301 shown in FIG. 8 is discriminated on the screen, and the operator inputs the identification and number information of the components in the area from the operation screen (Step 203).
- the result correction processing unit 281 and the arithmetic processing unit 283 of the central control unit 28 calculate the measurement result, and store the result of the corresponding component in the replacement analysis result memory 284 (Step 204).
- FIG. 8 is an explanatory diagram of the operation screen when the component concentration is replaced.
- the operator determines a region 301 on the image 80 of the entire photographing region by dragging the mouse.
- the volume V of the selected region 301 is calculated by the arithmetic processing unit 283 from the thickness of the stained sample 110b in the flow cell 100 and the area of the area.
- the component ID is selected from the pull-down menu in the “ID?” Field on the operation screen shown in FIG.
- a means for designating the entire screen is also provided in the area setting, and if a plurality of images can be set, the detection sensitivity can be further increased.
- the number of bacteria is 0.0 / microliter before the review and 30.0 bacteria / microliter after the review.
- the image of the entire photographing area is stored separately from the image cut out for each type of component, the entire photographing area is read, and the photographing read by the operator is read out. By confirming the entire region, additional components can be confirmed.
- the flow-type particle image analysis apparatus includes the particle detection unit 103, and detects the detection level when particles in the sample pass through the flow cell 100, and turns on the flash lamp 1 when the level is above a certain level. And take a picture.
- the sample When the sample is urine, it can be said that it is normal if there are few particle components. However, as the number of detected components increases, the possibility that there are many small components increases. It is not necessary to acquire and check images of the entire imaging area for all specimens. Taking a whole image for each specimen requires a large memory capacity, and it takes a long time to review all the stored whole images. Therefore, the inspection efficiency does not increase.
- a threshold value is set based on the particle detection count number and detection time width for each level, and only a set number of whole images are acquired only during the measurement for the specimen that exceeds the threshold value.
- a means for determining whether or not to acquire the entire image and whether or not to display the image is provided using the particle count number at a plurality of detection levels and the ratio thereof.
- the urinary components are various, and the level and width of the detection signal are also various.
- the problem is how far fine particles can be photographed. Although it is necessary to distinguish from dust and noise on the detection signal, a minute component of the same level as dust and noise appears.
- urinary cocci are difficult to distinguish from dust and noise. Since it cannot be distinguished, if a minute component is also a subject to be photographed, the number of images increases too much, and the classification accuracy is lowered and the efficiency is not improved. In the current apparatus, since components of about 3 ⁇ m or more are targeted, there may be cases where cocci have been missed, although they have appeared.
- FIG. 9 shows an example of the particle detection signal in the urine formed component.
- the horizontal axis indicates the detected time width ( ⁇ s), and the vertical axis indicates the detection voltage (V). Since large particles take time to pass, the time width becomes long. When the density in the particles is large, the detection voltage tends to increase. Cocci with a diameter of 1-2 ⁇ m are small in level and width. Red blood cells have a diameter of 6-8 ⁇ m and a higher voltage level than cocci. A glass cylinder having a width of 50 to 100 ⁇ m is characterized by a relatively low detection level but a long detection time width because the density of the contents is low. Since red blood cells can be classified by image, the threshold value of the imaging target is set to a detection level of 2 or more, and the threshold value of the time width is set to 30 ⁇ s or more.
- FIG. 10 shows a value obtained by subtracting the particle count number at the detection level 2 from the detection level 1 in the specimen in which the bacteria are confirmed in the urine sample. As the bacterial concentration increases, the difference increases. This difference is considered to be bacteria.
- a threshold value for the difference or the ratio it is possible to leave an entire image of the specimen with the possibility of appearance of bacteria.
- photograph is 1 conditions, the presence or absence of a microparticle can be assumed by counting the particle
- FIG. 11 illustrates a flow for determining whether or not it is necessary to acquire the entire image from the particle count number at each detection level. Measurement is started, and a particle image signal is detected when the particle component passes through the flow cell X (Step 301). The number of each particle at a plurality of detection levels (threshold values) is counted (Step 302). For particles that exceed one imaging target detection level among a plurality of stages, the flash lamp is turned on to acquire an image (Step 303). Do not photograph particles below the target detection level. In the particle image acquired, only components are cut out and classified (Step 305).
- Step 306 the particle counts in Step 302 are totaled, and the ratio between Level 1 and Level 2 or the ratio between Level 3 and Level 1 is calculated (Step 307). It is determined whether or not the entire image needs to be captured from the relationship between the ratio and the count number (Step 308). The specimen for which it is determined that the entire image is necessary is turned on, and the entire image is acquired (Step 309). Thereafter, the image is saved and a data flag is output (Steps 310 and 311). A sample for which acquisition of the entire image is not acquired does not acquire an image, and the measurement ends. It is also possible to set whether or not to acquire the entire image by setting the particle detection count. For example, as shown in FIG. 12, the particle count number obtained by subtracting the detection level 2 from the detection level 1 is 500, and the total number of stored images can be registered from the operation screen as three. Either the detection count number or the number of shots can be set to set the total number of images stored.
- the same effect as that of the first embodiment can be obtained, the memory capacity necessary for storing the entire image can be reduced, and the review time for the entire image can be shortened. be able to.
- test paper method Since the test paper method does not discard small bacteria, it is positive if there are bacteria. Therefore, the accuracy of measurement of bacteria and the like can be improved by determining whether or not the entire image is acquired based on the positive item.
- the urine chemistry analysis by the test strip method is also performed on the same sample, whether or not the entire image is acquired and stored according to the positive item can be used as a criterion for determination.
- the total number of stored images can be set for each qualitative item.
- a fourth embodiment will be described with reference to FIG.
- image display there is a difference in the size of the image itself between the image of the entire shooting area and the cut-out image, and if the images are displayed simultaneously on the display screen, the image of the entire shooting area may be reduced.
- the operator cannot grasp the sense of size. Therefore, a dimension scale 403 whose size can be discriminated is displayed on any screen.
- FIG. 13 is an explanatory diagram of switching between a cut-out image and an image of the entire shooting area and an enlargement / reduction function.
- the cut image is corrected using the screen shown in FIG. 13A (Step 101 in FIG. 6 and Step 201 in FIG. 7), and then the switching button 402 is pressed to switch to the entire shooting area image display (FIG. 13). 13 (B)).
- the size scale 403 is always displayed on the screen before and after switching.
- one scale of the scale 403 corresponds to 10 micrometers.
- the scale 403 can be moved by operating a mouse or the like.
- the enlargement button 405 is pressed to enlarge the image (FIG. 13C). Then, by pressing the reduction button 406, the original state shown in FIG.
- a previous page button 407 and a next page button 408 for turning a page are arranged.
- the cut image is returned.
- Result correction processing unit 282 ... Operation control unit, 283 ... Calculation processing unit, 284 ... Analysis result Memory, 291 Whole image memory, 292... Cropping memory, 301... Setting area, 401... Review screen, 402... Image switching button, 403. 405 ... enlarge button, 406 ... reduce button, 407 ... previous page button, 408 ... next page button, 409 ... whole area image
Abstract
Description
ある。図1において、フロー式粒子画像解析装置は、フローセル100と、画像撮影部101と、粒子分析部102と、粒子検出部103と、フロー系制御部124とを備える。
図3において、レビュー用画像メモリ29は、全体画像メモリ291と切り取り画像メモリ292とを備えている。また、中央制御部28は、操作部60からの操作指令に従って全体画像メモリ291、切り取り画像メモリ292からの画像を取り込んで修正処理する結果画像修正処理部281と、結果修正処理部281からの指令に従って演算処理する演算処理部283と、演算処理部283により処理された結果(分析結果)を格納する分析結果メモリ284と、表示部50やその他の部の動作を制御する動作制御部282とを備えている。測定終了後、測定結果はホストコンピュータ90へと送られる。また、試験紙法を用いた尿定性分析装置91の同一検体結果を測定前にホストコンピュータ90から受信する手段を備えている。
1個の濃度となる。
領域設定が全画面を指定する手段も設け、複数枚を設定できれば、より検出感度が上げられることになる。
図9に尿中有形成分における粒子検出信号の例を示す。横軸が検出している時間幅(μs)、縦軸が検出電圧(V)である。大きな粒子は通過するのに時間がかかるため、時間幅が長くなる。粒子内の密度等が大きい場合に検出電圧が高くなる傾向がある。直径が1-2μmの球菌はレベルと幅が小さい。赤血球は直径6-8μmで電圧のレベルが球菌に比べ大きい。幅が50~100μmの硝子円柱が内容物の密度が低いため、検出のレベルが比較的低いが、検出時間幅が長いのが特徴である。赤血球は画像での分類が可能であるため、撮像対象の閾値を検出レベル2以上で、かつ、時間幅の閾値を30μs以上とした。検出レベルのみを変更することで、撮影対象のレベル設定が変更できる。
図10に細菌は、尿試料で細菌が確認された検体において、検出レベル1から検出レベル2の粒子カウント数を差し引いた値を示す。細菌濃度が高くなるに従って、差分が大きくなる。この差が細菌であると考えられる。差分あるいは比率に閾値を設定することによって、細菌出現の可能性のある検体の全体画像を残すことができる。このように、撮影する検出レベルは1条件であるが、各検出レベルでの粒子数をカウントすることで、微小粒子の有無を想定できる。
また、粒子検出カウント数の設定で全体画像取得の有無を設定することもできる。例えば、図12に示すように、検出レベル1から検出レベル2を差し引いた粒子カウント数500個で、全体画像の保存枚数は3枚などと操作画面から登録できるようにする。検出カウント数と撮影枚数はどちらか一方の設定で全体画像の保存枚数を設定することができる。
従って、陽性となった項目で全体画像取得の有無を決めることで、細菌等の測定精度を上げることができる。
Claims (14)
- 粒子画像解析方法において、
フローセル(100)中を流れる粒子を検出し、
その検出信号を元に画像の取得要否を判断して対象粒子を撮影し、
撮影した試料の全体画像を全体画像メモリ(291)に格納し、
撮影した試料の全体画像から試料中の粒子成分及び個数を抽出し、
抽出した粒子成分を、特徴パラメータに基づいて解析し、成分種類毎に分類すると共にその成分の濃度を演算し、演算した濃度と共に分類した成分を切り取りメモリ(292)に格納し、
上記全体画像メモリ(291)に格納した全体画像を表示手段(50)に表示し、
操作手段(60)から入力された追加又は変更粒子成分情報に基づいて、上記切り取りメモリ(292)に格納された成分の修正、濃度修正演算を行うことを特徴とする粒子画像解析方法。 - 請求項1記載の粒子画像解析方法において、画像撮影用トリガの粒子検出条件とは異なる粒子検出条件を複数設定し、それぞれの条件で粒子検出個数をカウントし、前記各検出条件の検出個数または、各検出条件における検出個数の差分または、比率に基づき、全体画像の撮影実施の要否や撮影枚数、または、全体画像メモリ(291)への格納や表示の要否を設定することを特徴とする粒子画像解析方法。
- 請求項1記載の粒子画像解析方法において、上記表示された全体画像内の領域を特定し、その特定した領域における粒子成分及び粒子個数情報から単位体積当たりの個数濃度を修正演算し、上記切り取りメモリ(292)に格納することを特徴とする粒子画像解析方法。
- 請求項1記載の粒子画像解析方法において、上記操作手段(50)から入力されたコメント情報を上記切り取りメモリ(50)に格納することを特徴とする粒子画像解析方法。
- 請求項1記載の粒子画像解析方法において、上記試料は、生物の尿試料であり、この尿試料に対して、試験紙法により分析を行い、分析結果に従って、全体画像の撮影実施の有無や撮影枚数、または、全体画像メモリ(291)への格納や表示の有無を設定することを特徴とする粒子画像解析方法。
- 請求項1記載の粒子画像解析方法において、上記表示手段(50)に、撮影領域全体の画像と切り取り画像とを切換えて表示し、表示した画像を拡大および縮小して表示し、表示した画像に表示された粒子の大きさが判別できる寸法目盛を撮影領域全体の画像と切り取り画像中に表示することを特徴とする粒子画像解析方法。
- 請求項2記載の粒子画像解析方法において、各検出条件の検出個数または、各検出条件における検出個数の差分または比率に基づき、分類対象として切出し表示されない小粒子成分の存在を示すフラグを出力することを特徴とする粒子画像解析方法。
- 粒子画像解析装置において、
フローセル(100)中を流れる粒子を検出し、
その検出信号を元に画像の取得要否を判断して対象粒子を撮影する手段(8)と、
撮影手段(8)が撮影した試料の全体画像を格納する全体画像メモリ(291)と、
撮影した試料の全体画像から試料中の粒子成分の個数を抽出する粒子分析部(40)と、
撮影した試料の全体画像から試料中の粒子成分を抽出する特徴抽出部(26)と、
特徴抽出部(26)が抽出した粒子成分を、特徴パラメータに基づいて解析し、成分種類毎に分類するとともに、その成分の濃度を演算する演算処理部(283)と、
分類した粒子成分とその濃度を格納する切り取りメモリ(292)と、
上記全体画像メモリ(291)に格納した全体画像を表示する表示手段(50)と、
追加又は変更粒子成分情報が入力される操作入力手段(60)と、
上記操作入力手段(60)から入力された追加又は変更粒子成分情報に基づいて、上記切り取りメモリ(292)に格納された成分の修正、濃度修正演算を行う結果修正処理部(281)と、
を備えることを特徴とする粒子画像解析装置。 - 請求項8記載の粒子画像解析装置において、画像撮影用トリガの粒子検出条件とは異なる粒子検出条件を複数設定し、それぞれの条件で粒子検出個数をカウントし、前記各検出条件の検出個数または、各検出レベルにおける検出個数の差分または比率に基づき、全体画像の撮影実施の要否や撮影枚数、または、全体画像メモリへの格納や表示の要否を設定することを特徴とする粒子画像解析装置。
- 請求項8記載の粒子画像解析装置において、上記結果修正処理部(281)は、上記操作入力手段(60)から特定された特定領域における粒子成分及び粒子個数情報から濃度を修正演算し、上記切り取りメモリ(292)に格納することを特徴とする粒子画像解析装置。
- 請求項8記載の粒子画像解析装置において、上記結果修正処理部(281)は、上記操作入力手段(60)から入力されたコメント情報を上記切り取りメモリ(292)に格納することを特徴とする粒子画像解析装置。
- 請求項8記載の粒子画像解析装置において、上記結果修正処理部(281)は、上記操作入力手段(60)から入力される、尿試料に対して行われる試験紙法の分析結果に従って、同一試料に対する上記全体画像の撮影実施の有無や撮影枚数、または、全体画像メモリ(291)への格納や表示の有無を設定することを特徴とする粒子画像解析装置。
- 請求項9記載の粒子画像解析装置において、各検出条件の検出個数または、各検出条件における検出個数の差分または比率に基づき、分類対象として切出し表示されない小粒子成分の存在を示すフラグを出力することを特徴とする粒子画像解析装置。
- 請求項8記載の粒子画像解析装置において、上記結果修正処理部(281)は、上記表示手段(50)に、撮影領域全体の画像と切り取り画像とを切換えて表示し、表示した画像を拡大および縮小して表示し、表示した画像に表示された粒子の大きさが判別できる寸法目盛を撮影領域全体の画像と切り取り画像中に表示することを特徴とする粒子画像解析装置。
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