WO2009145251A1 - 反応過程データの異常判定支援方法及び自動分析装置 - Google Patents
反応過程データの異常判定支援方法及び自動分析装置 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/272—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration for following a reaction, e.g. for determining photometrically a reaction rate (photometric cinetic analysis)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00594—Quality control, including calibration or testing of components of the analyser
- G01N35/00603—Reinspection of samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N2035/0097—Control arrangements for automatic analysers monitoring reactions as a function of time
Definitions
- the present invention relates to a technique and an automatic analyzer for measuring the concentration and activity value of a target component in a sample, and software and a system using data at the time of measurement.
- An automatic analyzer is a system in which a sample and a reagent are dispensed into a cell to generate a chemical reaction, the absorbance of this mixture is measured, and the time series data of the absorbance due to the chemical reaction (hereinafter referred to as reaction process data) is used.
- This is a device that calculates the amount of change in absorbance and the rate of change in absorbance, and calculates the concentration and activity value of the target component in the sample.
- One method for assuring this measurement result is anomaly detection using reaction process data. This is a method of guaranteeing the measurement result by determining the presence or absence of an abnormal absorbance change appearing in the reaction process data. Therefore, if it is determined that there is an abnormal absorbance change, it means that some abnormality has occurred in the instrument, sample, and reagent at the time of measurement, and the test result cannot be guaranteed. It is necessary to investigate the cause of the abnormality and take countermeasures.
- the object of the present invention has been made in response to the above problems, and is to provide a method for analyzing abnormality of specific absorbance appearing on reaction process data and supporting abnormality detection.
- the above-described problem is achieved by applying an evaluation formula set in advance to time-series data of photometric values to calculate an index indicating a characteristic amount of a specific waveform, and the target data for the index calculated in the past.
- Relative index calculating means for calculating a value indicating an index relationship; and index display means for simultaneously displaying the value calculated by the index calculating means and the value calculated by the relative index calculating means It can be solved by the abnormality determination support method.
- the above-mentioned problem is calculated by calculating a difference between the reaction change component estimation means for estimating the photometric value change component due to the chemical reaction, and the estimated value obtained by the time series data and the reaction change component estimation means, and Disturbance change component extraction means for extracting time series data of change components, and the index calculation means performs processing using the time series data obtained by the disturbance change component extraction means.
- This method can significantly reduce the influence of changes in absorbance due to chemical reaction, and can solve the problem while further improving the reliability of the determination result.
- the problem is that the index calculating means, the frequency distribution generating means for generating the frequency distribution of the index in an arbitrary period, the frequency distribution of two periods, the time point of interest and the time point in the past from the time of interest. It can be solved by an abnormality determination support method characterized by having frequency distribution difference presenting means for presenting a difference in a period related to a specific abnormality occurrence frequency.
- the discovery of a specific abnormality can be facilitated by the abnormality determination support method that calculates the feature quantity of a specific change in absorbance. It is possible to limit the location where the abnormality of the device occurs, and to detect the abnormality of the device at an early stage.
- the abnormality judgment support method that presents the frequency of occurrence of abnormalities makes it possible to estimate the state of the equipment using reaction process data, improving the efficiency of equipment maintenance and improving equipment reliability without adding new parts. It becomes possible to do.
- the block diagram of the abnormality determination assistance system which is an Example of this invention.
- the block diagram of an automatic analyzer The flowchart of the abnormality determination assistance process in the Example of this invention.
- the flowchart of the abnormality determination assistance process including a disturbance component extraction process.
- FIG. 1 shows a configuration diagram of an abnormality determination support system 100 according to the first embodiment of the present invention.
- the system 100 includes a control unit 101, a primary storage device 102, an in-device reaction process data extraction unit 103, a reaction process data approximation unit 104, a disturbance component extraction unit 105, a score calculation unit 106, and a score DB read-out.
- a unit 107, a score DB 108, a score DB writing unit 109, a percentile calculation unit 110, a histogram creation unit 111, and a determination result output unit 112 are configured.
- the system 100 is described as a hardware configuration, but the function of the system 100 may be configured by software.
- the present system 100 can communicate with the automatic analyzer 130 via the network 120.
- the system 100 can communicate with the input / output terminal 140 via the network 120.
- the network 120 is premised on a network in an examination facility, but may be a network in a medical facility having an examination department.
- the automatic analyzer 130 stores the reaction process data in the reaction process data storage device 131.
- the reaction process data stored in the reaction process data storage device 131 can be extracted by the in-device reaction process data extraction unit 103 via the network 120.
- the reaction process data stored in the reaction process data storage device 131 can be viewed on the input / output terminal 140 via the network 120.
- the automatic analyzer 130 is described as hardware different from the system 100, the configuration of the system 100 may be configured in the automatic analyzer 130.
- reaction process data storage device 131 is configured in the automatic analyzer 130, but the automatic analyzer 130 and the reaction process data storage device 131 may be configured by different hardware. Further, the reaction process data storage device 131 may be configured in the system 100. Further, the reaction process data storage device 131 may be configured in the input / output terminal 140.
- the input / output terminal 140 is assumed to be an information device such as a personal computer having a keyboard or mouse as an input function and a CRT display as an output function, but may have other input / output functions.
- the input / output terminal 140 may be a terminal equipped with a Web browser function.
- the input / output terminal 140 is described as hardware different from the system 100, the input / output function of the input / output terminal 140 may be installed in the system 100.
- the input / output terminal 140 is described as hardware different from the automatic analyzer 130, the input / output function of the input / output terminal 140 may be mounted on the automatic analyzer 130.
- the input / output terminal 140 is assumed to be a personal computer, but may be a clinical examination system.
- the cell is a reaction vessel, and a sample is dispensed from the sample dispensing nozzle 204, a first reagent is dispensed from the first reagent dispensing nozzle 205a, and a second reagent is dispensed from the second reagent dispensing nozzle 205b, and stirred.
- a chemical reaction occurs inside the cell.
- the chemical reaction at this time can be converted into the concentration or activity value of the analyte in the sample by measuring the absorbance over time (photometry).
- Anomalies may appear in the reaction process data due to bubbles, water, or foreign matter in the thermostat 202 or cell 203 blocking the optical axis.
- the abnormality occurring at this time appears as a temporary increase in absorbance (hereinafter referred to as a jump) on the reaction process data of a plurality of wavelengths. That is, when such jumps frequently appear on the reaction process data, it is suspected that water scale or foreign matter is mixed in the thermostat 202 or the cell 203. For this reason, out of abnormal absorbance changes that appear in the reaction process data, by detecting an abnormality caused by jumps, the cause of the abnormality is limited, and early detection of equipment abnormality, that is, efficient equipment maintenance, equipment reliability It can lead to improvement in performance.
- FIG. 3 shows a flowchart 300 for supporting abnormality determination by jump based on reaction process data obtained by measuring a quality control sample.
- control unit 101 activates the reaction process data extraction unit 103 in the apparatus, extracts reaction process data of the wavelength ⁇ to be processed from the reaction process data stored in the reaction process data storage device 131, and performs primary storage.
- Step 301 of storing in the device 102 is executed.
- control unit 101 activates the score DB writing unit 109, and executes step 303 in which the score calculated for the currently processed sample is registered in the DB.
- control unit 101 executes step 305 for determining whether or not to execute a process of calculating the relative magnitude of the jump. If the process for calculating the relative magnitude of the jump is not performed, step 306 is executed. Step 306 will be described later.
- control unit 101 activates the percentile calculation unit 110, and executes step 308 for calculating the percentile of the target sample and the photometry point score with respect to the same photometry point score of the read wavelength. Thereby, the relative magnitude of the jump of each photometric point of the target sample is shown.
- FIG. 6 shows a score 600 of each photometric point and an example 600 of the calculated percentile.
- the score read from the DB is plotted according to the photometry point and the score size, indicating that the percentile of the target sample at time t is 95%. Further, in the example 600, it can also be confirmed that the average value and the variance of the score distribution differ depending on the photometric point. By indicating the relative size of the score, it is possible to support jump determination that takes into account the influence of the difference in distribution of each photometric point.
- FIG. 7 shows a screen example 700 of the input / output terminal 140 when the score ranking result is output.
- a percentile indicating the relative magnitude of the score is displayed in a graph 701 indicating the absolute magnitude of the score.
- the laboratory technician can know whether the point with a large score is specifically larger than the result of the same photometric point of another sample.
- the score is relatively smaller than other photometric points, it can be confirmed whether it is specifically larger than the result of the same photometric point of another sample. Therefore, it is possible to easily determine whether a jump has occurred in the target sample.
- step 305 it is determined whether it is determined in step 305 not to execute a process that relatively indicates the magnitude of a jump, or whether a process that presents a temporal change in the occurrence frequency of a jump is executed after step 310 is executed.
- Step 306 is executed. If the process of presenting the change over time of the jump occurrence frequency is not performed, this process is terminated.
- the control unit 101 When executing the process of presenting the change over time of the occurrence frequency of jumps, the control unit 101 activates the score DB reading unit 107, and scores of the same sample, reagent, and wavelength in the period P1 to be compared and the current period P2 Step 311 is read out.
- the periods P1 and P2 are all samples from XX month to ⁇ month ⁇ days, all samples from XX hours to ⁇ hours and ⁇ minutes, all samples with sample IDs XX to ⁇ , and the like.
- control unit 101 activates the histogram creation unit 111, and executes step 312 for creating a histogram having a score size for each wavelength and each photometry point in each of the periods P1 and P2. Thereby, the distribution of scores can be obtained in each period.
- Step 313 is executed to determine whether the control unit 101 has processed all wavelengths to be processed. This makes it possible to analyze the reaction process data using the jump feature that jumps occur at all wavelengths. If it is determined that the processing has not been completed for all wavelengths to be processed, the control unit 101 executes steps 311 and 312 for the target wavelength.
- FIG. 8 shows an example screen 800 of the input / output terminal 140 when two histograms are displayed.
- the histogram 801 of the period P1 and the histogram 802 of the period P2 are displayed so that the peak heights are aligned.
- a histogram 803 obtained by enlarging a part of the histogram 801 and a histogram 804 obtained by enlarging a part of the histogram 802 are displayed.
- the range is set appropriately so that you can.
- the score distributions can be compared in the periods P1 and P2, and the number of jump occurrence frequencies can be confirmed.
- a histogram is created for each wavelength and photometric point.
- a histogram may be created without distinguishing between wavelength and photometric point. Thereby, the frequency distribution of the target period can be confirmed by one histogram, and the data can be confirmed more simply by the laboratory technician.
- step 312 the score size histogram is created, but the histogram may be created not from the score size but from the difference between the score and the average value of the scores. Thereby, the influence of the bias for each wavelength and photometry point is removed, and a more fair comparison can be performed when a histogram is created without distinguishing between wavelengths and photometry points.
- step 314 the peak heights of the two histograms 801 and 802 are aligned, but the height of a certain data section may be aligned. Thereby, when the data section in which the peak exists is different, the difference can be clearly visualized.
- Example 2 Next, a second embodiment of the present invention will be described.
- a process for extracting an absorbance change component due to a disturbance by removing an absorbance change component due to a reaction from the reaction process data is added.
- Other configurations and processes are basically the same as those in the first embodiment.
- FIG. 9 shows a flowchart for quantifying the magnitude of the jump based on the reaction process data obtained by measuring the quality control sample.
- Step 901 similar to Step 301 is executed.
- control unit 101 activates the reaction process data approximation unit 104 and executes step 902 for calculating an approximate function of the reaction process data.
- the model of the approximate function is Equation (2), approximate parameters k, A0, A1 are calculated, and approximate values are obtained.
- FIG. 10 shows an example 1000 of reaction process data after execution of step 902.
- the reaction process data is shown fitted by curve approximation.
- control unit 101 activates the disturbance component extraction unit 105 and executes step 903 for extracting a disturbance component of the reaction by calculating a difference between the reaction process data and the approximate value.
- the absorbance change component due to the reaction in the reaction process data is removed, the change in absorbance due to disturbance is clarified, and it is possible to make a highly accurate abnormality determination.
- the reaction process data there may be a large difference due to the reaction in the absorbance distribution for each wavelength or photometry point, but the difference can be reduced by extracting the disturbance component. This makes it possible to compare scores between wavelengths or photometric points.
- FIG. 11 shows an example 1100 of disturbance component data after execution of step 903.
- Example 1100 it is shown that the absorbance change component due to the reaction is removed, and the change in absorbance due to disturbance is removed.
- the control unit 101 activates the score calculation unit 106 and executes step 904 in which a score representing the magnitude of the jump is calculated for each photometric point from the disturbance component data.
- the score is calculated by equation (3). Equation (3) is the same as equation (1), but the disturbance component calculated in step 903 is used instead of using the difference in absorbance as the score. In equation (3), D is a disturbance component.
- step 902 the approximation is performed using the equation (2) as a model.
- any model such as polynomial approximation or Taylor expansion may be used as the approximation method. This makes it possible to select a model formula suitable for the reaction process data, and to calculate a score with higher accuracy. However, the parameters derived in this case are different.
- step 910 the percentile is calculated for each wavelength and each photometric point, but the percentile may be calculated without distinguishing between the wavelength and the photometric point. Further, the average value or median value of the calculated percentiles for each wavelength may be used as the representative value at the photometric point. As a result, the number of graphs showing the percentile of one sample is reduced, and the data confirmation work of the laboratory technician is facilitated.
- a histogram is created for each wavelength and photometric point.
- a histogram may be created without distinguishing between wavelength and photometric point. Thereby, the frequency distribution of the target period can be confirmed by one histogram, and the data can be confirmed more simply by the laboratory technician.
- the histogram of the score size is created.
- the histogram may be created not from the score size but from the difference between the score and the average value of the scores. Thereby, the influence of the bias for each wavelength and photometry point is removed, and a more fair comparison can be performed when a histogram is created without distinguishing between wavelengths and photometry points.
- step 916 the heights of the peaks of the two histograms 801 and 802 are aligned, but the height of a certain data section may be aligned. Thereby, when the data section in which the peak exists is different, the difference can be clearly visualized.
- FIG. 12 shows a processing flow for determining whether or not the reaction process data is abnormal in the present embodiment.
- the same symbol is attached
- FIG. 12 shows a processing flow for determining whether or not the reaction process data is abnormal in the present embodiment.
- the same symbol is attached
- processing steps 901 to 912 are the same as the processing step of the same sign in FIG. Further, the processing steps 1210 to 1230 described below are performed by the control unit.
- the user determines in advance whether or not to calculate the percentile value in processing step 907. Percentile calculation may be executed for all items, or only some items may be executed. Alternatively, the setting may be such that the percentile is not executed for all items.
- a determination threshold value for determining abnormality is read.
- a predetermined value is stored as the threshold for determination.
- the value may be stored in the score DB 108 or may be held in the control unit 101.
- the value may be configured to be changeable by the user.
- a different threshold value may be set for each inspection item or reagent. Further, the same value may be used for each photometric point, or a different value may be used for each photometric point.
- the percentile value for determination For the item that is determined to be subjected to the percentile in step 907, it is possible to easily set, as a threshold value for determination, how much it deviates from the distribution of the past score values by using a relative value. It is. For example, when it is determined that the upper and lower score values of 1% from the distribution of past data are abnormal, two types of threshold values 1% and 99% are set for the percentile value.
- processing step 1220 the presence or absence of abnormality is determined by comparing the score value calculated in processing step 904 or the percentile value calculated in processing step 910 with the determination threshold value read in processing step 1210. For example, when two threshold values for determination of 1% and 99% are set as described above, if the percentile value calculated in process step 910 is 1% or less, or 99% or more, it is determined that there is an abnormality. Otherwise, it is determined as normal.
- disturbance component extraction processing is performed in processing steps 902 and 903, but a configuration in which disturbance component extraction is not performed is also possible as in the first embodiment. In this case, it is possible to speed up the processing because the calculation processing of the approximate expression that requires time is not performed.
- abnormal data in which only one point of reaction process data shows abnormal fluctuation can be detected with high accuracy. Is possible. Also, by using the percentile value converted from the score value, it is possible to easily set the relative value to determine how much data deviates from the past data is abnormal. Also, by extracting disturbance components using approximate equations, it is possible to detect abnormal fluctuation components with higher accuracy.
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Abstract
Description
図1に,本発明の第1の実施例である異常判定支援システム100の構成図を示す。
図4に,反応過程データ上のジャンプに対して式(1)を適用する例400を示す。例400において,Atは時刻tにおける吸光度を表しており,時刻tで吸光度のジャンプが発生している。Atに対して式(1)を適用すると,AtとAt-1,At+1の差のうちの小さい方がスコアとして算出される。ジャンプが発生している場合,At-1,At+1から吸光度が大きく離れているため,スコアは周囲のスコアよりも大きくなる。
次に,本発明の第2の実施例について説明する。本実施例は反応過程データから,反応による吸光度変化成分を除去することにより外乱による吸光度変化成分を抽出する処理を加えたものである。その他の構成や処理については,第1の実施例と基本的に同じである。
このとき,kは反応速度定数,A0は反応開始時の初期吸光度,A1は目的成分の濃度,を示す近似パラメータであり,tは時刻,A(t)は時刻tにおける測光点の吸光度,eは自然対数の底である。
以上のステップ901からステップ904により,対象となる測光点の吸光度が周囲の測光点の吸光度よりどの程度上昇しているかを吸光度変化の外乱成分より定量化することが可能となる。
次に本発明の第3の実施例を説明する。装置の構成は実施例1,2と同じである。図12は,本実施例において,反応過程データの異常の有無を判定するための処理フローを示している。なお,実施例2の説明に用いた処理フローを説明する図9と同一の処理を行う処理ステップには,同じ記号を付している。
101 制御部
102 一次記憶装置
103 装置内反応過程データ抽出部
104 反応過程データ近似部
105 外乱抽出部
106 スコア算出部
107 スコアDB読み出し部
108 スコアDB
109 スコアDB書き出し部
110 パーセンタイル算出部
111 ヒストグラム作成
113 判定結果出力部
120 検査施設内のネットワーク
130 自動分析装置
131 反応過程データ記憶装置
140 入出力端末
201 光源ランプ
202 恒温槽
203 セル
204 試料分注ノズル
205a 第1試薬分注ノズル
205b 第2試薬分注ノズル
206 攪拌機構
207 分光器
208 検知器
209 増幅器
210 A/D変換器
Claims (12)
- 試料と1種類以上の試薬を混合した混合液を複数の波長で光学的に測定した測光値の時系列データから,前記試料中の目的成分の濃度や活性値の測定を行う自動分析装置において,
前記測光値の時系列データに予め設定した評価式を適用し,特定の波形の特徴量を示す指標を算出する指標算出手段と,過去に算出された前記指標に対する対象データの前記指標の関係を示す値を算出する相対指標算出手段と,前記指標算出手段により算出された値と前記相対指標算出手段により算出された値とを同時に表示する指標表示手段とを有することを特徴とする自動分析装置。 - 請求項1に記載の自動分析装置であって,
化学反応による測光値変化成分を推定する反応変化成分推定手段と,前記時系列データと前記反応変化成分推定手段で得られた推定値との差分を算出して,外乱による変化成分の時系列データを抽出する外乱変化成分抽出手段とを備え,前指標算出手段は,前記外乱変化成分抽出手段で得られた時系列データに予め設定した評価式を適用し,特定の波形の特徴量を示す指標を算出する処理を実行することを特徴とする自動分析装置。 - 請求項1に記載の自動分析装置であって,
任意の期間における前記指標の度数分布を生成する度数分布生成手段と,着目した時点と,前記着目時点より過去の時点の2つの期間の度数分布を用いて,特定の異常発生頻度に関する期間の差異を提示する度数分布差提示手段と,を有することを特徴とする自動分析装置。 - 試料と1種類以上の試薬を混合した混合液を複数の波長で光学的に測定した測光値の時系列データから,前記試料中の目的成分の濃度や活性値の測定を行う自動分析装置における前記時系列データの異常判定を支援する方法であって,
前記時系列データに予め設定した評価式を適用して,特定の波形の特徴量を示す指標を算出し,
過去に算出された前記指標に対する対象データの前記指標の関係を示す値を算出し,
当該算出された特定の波形の特徴量を示す指標と前記過去に算出された前記指標に対する対象データの前記指標の関係を示す値とを同時に表示する
ことを特徴とする異常判定支援方法。 - 請求項4に記載の異常判定支援方法であって,
化学反応による測光値変化成分を推定し,前記時系列データと前記反応変化成分推定手段で得られた推定値との差分を算出して,外乱による変化成分の時系列データを抽出し,当該抽出された外乱による変化成分の時系列データを用いて前記試料中の目的成分の濃度や活性値の測定処理を実行することを特徴とする異常判定支援方法。 - 請求項4に記載の異常判定支援方法であって,
前記算出された特定の波形の特徴量を示す指標をもとに,任意の期間における前記指標の度数分布を生成し,着目したある時点と,前記着目時点より過去の時点の2つの期間の度数分布を用いて,特定の異常発生頻度に関する期間の差異を提示することを特徴とする異常判定支援方法。 - 試料と1種類以上の試薬を混合した混合液を複数の波長で光学的に測定した測光値の時系列データから,前記試料中の目的成分の濃度や活性値の測定を行う自動分析装置において,
前記時系列データの各時点において1時点前のデータとの第1の差分値と,1時点後ろのデータとの第2の差分値を計算し,前記第1の差分値の絶対値と前記第2の差分値の絶対値を比較し,小さい方の値を指標とする指標算出手段を有し,
該指標の値により異常の有無を判定することを特徴とする自動分析装置。 - 請求項7記載の自動分析装置において,過去に測定された試料に対し算出された複数の前記指標の分布の中心と,新たに測定された試料に対し算出された前記指標との相対的距離を計算する相対指標算出手段とを有することを特徴とする自動分析装置。
- 請求項7記載の自動分析装置において,前記時系列データを関数により近似し,該関数より近似される値を化学反応による測光値変化成分とする反応変化成分推定手段と,前記時系列データと前記反応変化成分推定手段で得られた推定値との差分を算出して,外乱による変化成分の時系列データを抽出する外乱変化成分抽出手段とを備えることを特徴とする自動分析装置。
- 請求項7記載の自動分析装置において,前記指標算出手段により算出された値と前記相対指標算出手段により算出された値とを同時に表示する指標表示手段とを有することを特徴とする自動分析装置。
- 請求項7記載の自動分析装置において,前記指標算出手段により算出された値に基き,異常の有無を判定する手段を有すること特徴とする自動分析装置。
- 請求項7記載の自動分析装置において,過去に測定された試料に対し算出された複数の前記指標の分布の中心と,新たに測定された試料に対し算出された前記指標との相対的距離を計算する相対指標算出手段と,該相対指標に基き異常の有無を判定する手段とを有することを特徴とする自動分析装置。
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