WO2018101412A1 - 心電波形表示方法及び心電図解析装置 - Google Patents
心電波形表示方法及び心電図解析装置 Download PDFInfo
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/316—Modalities, i.e. specific diagnostic methods
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Definitions
- the present invention relates to an electrocardiogram waveform display method and an electrocardiogram analyzer.
- an electrocardiogram analyzer capable of automatic analysis of an electrocardiogram
- a medical worker first attaches electrodes to a subject, then the electrocardiogram analyzer collects an electrocardiogram waveform, and then the electrocardiogram analyzer collects the heart The radio wave shape is automatically analyzed.
- the analysis target waveform and the analysis result are displayed on a separate screen. Therefore, when the user wants to see the analysis result regarding a certain analysis target waveform, the user needs to switch the screen from the screen displaying the analysis target waveform to the screen displaying the analysis result.
- the analysis result screen one beat of the representative waveform of the analysis target waveform and the analysis result (analysis findings, measurement values, subject information, examination information) are displayed.
- the user wants to view the analysis target waveform that is the basis of the analysis result screen again, the user needs to switch the screen from the screen displaying the analysis result to the screen displaying the analysis target waveform again.
- the present invention has been made in consideration of the above points, and provides an electrocardiogram waveform display method and an electrocardiogram analyzer that can present a relationship between an analysis target waveform and an analysis result thereof to a user in an easy-to-understand manner with few operations. provide.
- the display control unit displays an analysis result related to the electrocardiogram waveform simultaneously with a screen on which the corresponding electrocardiogram waveform is displayed in response to a user operation on the user operation unit.
- the analysis result related to the electrocardiographic waveform to be analyzed is displayed at the same time as the analysis target waveform screen, there is no need to switch the screen, and the electrocardiographic waveform and the analysis result can be viewed simultaneously. become able to. As a result, the relationship between the electrocardiographic waveform to be analyzed and the analysis result can be presented to the user in an easy-to-understand manner with few operations.
- the perspective view which shows the external appearance structure of the electrocardiograph of embodiment Block diagram showing the main components of the electrocardiograph The figure which shows the initial screen of 12 lead inspection Diagram showing the screen when collecting ECG waveforms Figure showing the candidate list screen Figure showing the analysis result screen
- the figure which serves for explanation of the method of extracting the candidate section where the arrhythmia waveform is included
- FIG. 1 is a perspective view showing an external configuration of an electrocardiograph according to the present embodiment.
- the electrocardiograph 100 is composed of a main body part 110 and a display part 120.
- the main body unit 110 is provided with an input key 104 and a printer unit 105.
- the display unit 120 is provided with a touch panel 121.
- the size of the touch panel 121 is 15 inches.
- the size of 15 inches is roughly equivalent to the A4 paper size.
- FIG. 2 is a block diagram showing a main configuration of the electrocardiograph 100.
- the main unit 110 includes a calculation unit 101, a measurement unit 102, a storage unit 103, an input key 104, a printer unit 105, and a display / print control unit 106.
- the calculation unit 101 is configured by a CPU (Central Processing Unit) or the like, and executes an electrocardiogram data processing program to perform formation of an electrocardiogram waveform, analysis of the electrocardiogram waveform, and the like. In addition, the calculation unit 101 performs execution start, execution stop and execution condition (threshold value, etc.) setting of the electrocardiogram data processing program, control of various measurement devices such as the measurement unit 102, and control of various peripheral devices such as the touch panel 121 and the printer unit 105.
- execution start, execution stop and execution condition threshold value, etc.
- the measurement unit 102 is connected to an electrode unit worn by a subject (that is, an electrocardiogram measurement subject), performs an amplification process on the measurement voltage input from the electrode unit, and performs measurement after the process.
- the voltage is output to the calculation unit 101.
- the electrode unit for limbs and the electrode unit for chest are usually connected to the measurement unit 102, and a voltage necessary for obtaining a 12-lead electrocardiogram is input.
- the storage unit 103 is configured by a hard disk drive, a semiconductor memory, or the like.
- the storage unit 103 stores electrocardiographic waveform data obtained by the calculation unit 101 and analysis data thereof.
- the storage unit 103 also stores measurement data output from the measurement unit 102.
- the storage unit 103 also stores setting data of the electrocardiograph 100 input by the user from the touch panel 121 or the input key 104.
- the electrocardiograph 100 operates based on setting data stored in the storage unit 103.
- a menu screen and various setting screens are displayed on the touch panel 121, and the user can perform menu selection and various settings by touching the touch panel 121.
- the touch panel 121 displays an electrocardiogram waveform obtained by the calculation unit 101, an analysis result, and the like.
- the printer unit 105 is a printer of a laser type or a thermal head type, and prints an electrocardiogram waveform and an analysis result obtained by the calculation unit 101 according to an instruction from the user.
- the display / print control unit 106 controls the layout of the electrocardiographic waveform displayed on the screen of the touch panel 121 and printed on the recording paper by the printer unit 105.
- the display control of the electrocardiogram waveform and the analysis result in the present embodiment is mainly performed by the display / print control unit 106.
- the electrocardiograph 100 automatically extracts candidate waveforms upon completion of waveform collection, analyzes the waveforms, and displays the candidate waveforms. Specifically, since the collected waveform is stored in the storage unit 103, the waveform of a plurality of candidate sections suitable for the calculation unit 101 to perform analysis from the collected waveform is extracted, and the extracted plurality of waveforms are extracted. Analyze the waveform of the candidate section. The extracted waveforms of a plurality of candidate sections are displayed on the touch panel 121.
- a candidate section means an analysis unit section.
- the user can make various selections with this analysis unit section as a unit, and hence it is called a candidate section. Note that the waveform extraction processing of a plurality of candidate sections by the calculation unit 101 will be described in detail later.
- FIG. 5 shows an example of a candidate list screen displayed on the touch panel 121.
- the waveform display area is divided into four, and four candidate sections of the first to fourth candidates are displayed. Specifically, the first candidate is displayed on the upper left, the second candidate is displayed on the upper right, the third candidate is displayed on the lower left, and the fourth candidate is displayed on the lower right.
- the user since the electrocardiogram waveforms of a plurality of candidate sections are displayed on one screen, the user compares the plurality of candidate sections on one screen and records them from the plurality of candidate sections. It becomes possible to easily select the electrocardiogram waveform in the section to be.
- the arrangement order of the candidate interval waveforms from the first candidate to the fourth candidate is set in descending order of severity in the analysis findings.
- the user can see the waveforms in descending order of severity.
- arrange them in chronological order By the way, if the severity is similar, arrange them in chronological order.
- the arrangement order is not limited to this.
- the arrangement order may be in chronological order regardless of severity.
- one of the candidate section waveforms is surrounded by a selection frame W1.
- the display position of the selection frame W1 can be selected by the user touching any one of the display areas in which the candidate section waveforms of the first to fourth candidates are displayed with a finger.
- the waveform display area of the first candidate is surrounded by the selection frame W1, but for example, when the waveform display area of the second candidate is touched, the waveform display area of the second candidate is the selection frame W1. Surrounded.
- the selection is made by touching with a finger.
- the pointer is moved to the touch position and the mouse is clicked.
- the same selection can be made.
- FIG. 6 shows an example of a transition destination analysis result screen.
- the analysis result screen includes a finding A1, a finding explanation A2, a measured value A3, and the like.
- This recording waveform screen is a screen that displays a waveform obtained by returning the waveform enclosed by the selection frame W1 in FIG. 5 to the original recording size.
- the electrocardiograph 100 proceeds to a process of saving the analysis result and waveform data of the currently selected candidate section in the storage unit 103.
- the electrocardiograph 100 proceeds to a process of printing the analysis result of the currently selected candidate section by the printer unit 105.
- the user may touch, for example, the “Return to examination” button B7 on the analysis result screen of FIG. 6 or the “Return” button B8 on the candidate list screen of FIG. .
- the initial screen shown in FIG. 3 is displayed on the touch panel.
- the display format of the electrocardiogram waveform on the candidate list screen can be changed. Specifically, the candidate list screen is sequentially changed as shown in FIGS. 9A to 9D according to the number of times the user touches the “screen selection” button B10 on the candidate list screen shown in FIG.
- a 6-channel ⁇ 2 12-lead electrocardiogram and a 1-channel rhythm waveform are displayed in each candidate area (that is, one area that can be surrounded by the selection frame W1). More specifically, on the candidate list screen in FIG. 9A, an electrocardiographic waveform is displayed in a continuous method or a coherent method in each candidate region.
- the continuous or coherent electrocardiogram among the 12 lead electrocardiograms, the limb lead waveforms I, II, III, aVR, aVL, and aVF are arranged on the left side, and the chest lead waveforms V1, V2, V3, V4, V5, and V6 are arranged on the right side.
- the continuous method among the 10-second ECG waveforms, the first 0 to 5 second limb lead waveform is displayed on the left side, and the second 5 to 10 second chest lead waveform is displayed on the right side.
- the coherent method the limb induction waveform of 0 to 5 seconds in the first half of the 10 second waveform is displayed on the left side, and the chest induction waveform of 0 to 5 seconds in the first half is displayed on the right side.
- This continuous method and coherent method can display 12-lead waveforms in a single screen with a limited size so that the user can easily diagnose without reducing the amplitude of the waveform as much as possible. It is a display system that has a shape and is widely used in the past.
- a 6-channel 12-lead electrocardiogram and a 1-channel rhythm waveform are displayed in each candidate area. More specifically, in the candidate list screen of FIG. 9C, the limb lead waveforms I, II, III, aVR, aVL, and aVF among the 12 lead electrocardiogram waveforms in each candidate region are displayed in the continuous method (or the coherent method). ) Without reducing the waveform of a part of the section, that is, all waveforms within a predetermined period (for example, 10 seconds) are displayed.
- the candidate list screen of FIG. 9D 12-channel ECGs of 12 channels are displayed in each candidate area. More specifically, in the candidate list screen of FIG. 9D, among the 12 lead electrocardiogram waveforms, the limb lead waveforms I, II, III, aVR, aVL, aVF and the chest lead waveforms V1, V2, V3, V4, V5, and V6 are all arranged vertically by reducing the sensitivity (waveform amplitude) direction, and without reducing the waveform of some sections reduced by the continuous method (or coherent method), that is, within a predetermined period. All waveforms (for example, for 10 seconds) are displayed.
- the extraction method of the present embodiment for extracting the waveform of the candidate section from the collected waveform temporarily stored in the storage unit 103 will be described.
- the collection time is 60 seconds
- one candidate section is 10 seconds
- four candidate sections are extracted.
- the collection time can be set, for example, from 30 seconds to 10 minutes (in increments of 1 second)
- the section length of the candidate section can also be set, for example, from 8 to 24 seconds.
- the number of sections is not limited to four.
- the operation unit 101 functions as a candidate waveform extraction unit that extracts the electrocardiogram waveforms of a plurality of candidate sections from the collected electrocardiogram waveforms.
- FIG. 10 is a diagram for explaining a method for extracting an electrocardiographic waveform in a candidate interval by excluding the noise interval.
- the uppermost waveform in the figure shows a collected waveform for 60 seconds temporarily stored in the storage unit 103.
- the second row shows a state where four candidate sections are formed by dividing the collected waveform every 10 seconds from the top, and the third row shows a candidate section extracted by excluding the noise section according to the present embodiment.
- FIG. 10 is a diagram for explaining a method for extracting an electrocardiographic waveform in a candidate interval by excluding the noise interval.
- the uppermost waveform in the figure shows a collected waveform for 60 seconds temporarily stored in the storage unit 103.
- the second row shows a state where four candidate sections are formed by dividing the collected waveform every 10 seconds from the top
- the third row shows a candidate section extracted by excluding the noise section according to the present embodiment.
- the second, third, and fourth candidate sections contain noise.
- the analysis results are greatly affected by noise, and it is impossible to obtain an analysis result in which the electrocardiogram waveform is correctly reflected. .
- the present embodiment by extracting candidate sections excluding the noise section, it is possible to obtain an analysis result in which the influence of noise is small and the electrocardiographic waveform is correctly reflected in all candidate sections. It has become. Specifically, in the collected waveform stored in the storage unit 103 by the calculation unit 101, an interval in which an extreme high-frequency waveform appears with respect to an assumed electrocardiogram waveform (for example, AC, myoelectricity, drift is present). Detected as a noise interval in a section in which an extremely low frequency waveform appears (for example, a section in which noise due to electrode disconnection or poor contact occurs), and excludes this noise section as a candidate. Extract the ECG waveform of the interval. Note that the noise detection method is not limited to this, and in short, a waveform different from the assumed electrocardiographic waveform of the person may be detected as noise.
- an assumed electrocardiogram waveform for example, AC, myoelectricity, drift
- the electrocardiogram waveforms of the four candidate sections 1 to 4 indicated by shading are analyzed and analyzed as the ECG waveforms displayed on the candidate list screen (FIG. 5). Extracted as a target electrocardiogram.
- FIG. 11 is a diagram for explaining a method of extracting candidate sections including an arrhythmia waveform.
- the calculation unit 101 detects the position where the arrhythmia has occurred, and the electrocardiographic waveforms in the four candidate sections 1 to 4 indicated by shading centered on the position are displayed as candidates. Extracted as an electrocardiogram waveform displayed on the list screen (FIG. 5) and as an electrocardiogram waveform to be analyzed.
- display and analysis suitable for an electrocardiogram examination can be performed.
- the arrhythmia waveform is preferably arranged at the center of the candidate section. This is because if there are waveforms before and after the arrhythmia waveform, it is possible to confirm whether the arrhythmia suddenly occurred or there was a sign while looking at the waveforms before and after the arrhythmia waveform.
- the position of the candidate section is set in the direction in which the waveform data exists. If the candidate sections overlap each other (candidate 2 and candidate 3), extraction may be performed by shifting the position of any candidate section in a direction that does not overlap.
- the candidate section including the arrhythmia (candidate 2 in the figure)
- the candidate sections may be extracted so that the candidate sections overlap. Good.
- candidate 4 is extracted so as to overlap candidate 3.
- the candidates 1 to 4 are extracted so that a part of all the candidates 1 to 4 overlaps by an equal length. Note that if no overlap is allowed, only three candidates 1 to 3 may be extracted.
- candidate sections are extracted in the order of (i) noise exclusion, (ii) duplication prohibition, and (iii) extraction centering on arrhythmia.
- noise exclusion if noise is present, a correct analysis result cannot be obtained, so noise exclusion is given the highest priority.
- duplication occurs when extraction is performed centering on arrhythmia, priority is given to prohibiting duplication over extraction centering on arrhythmia.
- FIG. 12 corresponds to this.
- the number of candidate sections may be extracted in order from the section containing the arrhythmia with higher severity.
- the number of candidate sections to be extracted is four, six arrhythmias are included in the acquired waveform, and six arrhythmias have two severity (high), two severity (medium), In the case of two severity (low), it is preferable to preferentially extract candidate sections including four arrhythmias having four high severity, that is, two severity (high) and two severity (medium).
- priority may vary depending on the medical site or the like, so that priority may be set.
- the waveform analysis result screen surrounded by the selection frame W1 is displayed. .
- 16 and 17 show examples of the display.
- the display area of the first candidate is surrounded by the selection frame W1 and the simple window W10.
- the analysis result displayed in the simple window W10 is an analysis finding regarding the first candidate section waveform.
- what is displayed on the simple window W10 may be other analysis results such as a measurement value and a representative waveform.
- the analysis results displayed in the simple window W10 are in order of severity. Therefore, when the amount of analysis results is large, only the higher-order analysis results with higher severity are displayed in the simple window W10. Note that the user may be able to set which analysis result is displayed in the simple window W10.
- the simple window W10 is preferably translucent. By doing in this way, even if the simple window W10 is displayed in the area surrounded by the selection frame W1, the electrocardiographic waveform at the position of the simple window W10 can be seen through. Further, the simple window W10 is not necessarily displayed in the selection frame W1.
- the method for displaying the simple window W10 is not limited to a long press on the touch panel 121.
- the pointer is moved into one of the display areas of the first to fourth candidates and the mouse button is pressed at that position.
- the simple window W10 may be displayed by clicking or double-clicking. In this case, the simple window W10 may be closed with the mouse.
- the window W10 when the simple window W10 is opened by long-pressing the touch panel 121 with a finger and the simple window W10 is closed when the finger is released from the touch panel 121, the window can be displayed and hidden with one action. Therefore, there is an advantage that analysis results of a plurality of candidate sections can be viewed quickly.
- the second candidate display area is surrounded by the selection frame W1 and a simple window W10 is displayed.
- An analysis result regarding the second candidate section waveform is displayed in W10.
- the simple analysis result can be displayed in the simple window W10 by the same operation.
- the analysis result can be confirmed without switching the screen by displaying the simple window W10 on which the analysis result related to the electrocardiogram waveform is displayed on the same screen as the electrocardiogram waveform. become able to.
- the test result can be confirmed with a small number of procedures, and the electrocardiographic waveform and the analysis result can be compared on the same screen.
- the analysis results for the electrocardiographic waveforms of each candidate section are selectively displayed on the same screen as the screen on which the electrocardiographic waveforms of the multiple candidate sections are displayed.
- only the analysis result related to the electrocardiographic waveform of one candidate section selected by the user is displayed on the same screen among the electrocardiographic waveforms of the plurality of candidate sections displayed on the same screen.
- the analysis results regarding the electrocardiographic waveforms of two or more candidate sections selected by the user may be displayed on the same screen.
- the electrocardiogram waveforms of a plurality of candidate sections displayed on the candidate list screen are extracted by the calculation unit 101.
- the electrocardiographic waveform in this candidate section is a waveform in a section determined to be appropriate for analysis by the calculation unit 101.
- a waveform batch movement mode for extracting a section suitable for waveform confirmation and waveform comparison of an electrocardiogram waveform.
- the operation unit 101 as an electrocardiogram waveform extraction unit is set to the waveform batch movement mode by a user operation, for example, candidates 1 to 4 as shown in FIG. 18 are extracted.
- candidates 1 to 4 as shown in FIG. 18 are extracted.
- an electrocardiogram waveform having a length of 10 minutes is collected in the storage unit 103, and 10-second segment length candidates 1 to 4 are extracted from the electrocardiogram waveform.
- the intervals between the candidates 1 to 4 are made equal, and in the example of FIG. 18, it is 2.5 minutes.
- candidate 1 is an electrocardiogram waveform from 0 seconds to 10 seconds
- candidate 2 is an electrocardiogram waveform from 2 minutes 30 seconds to 2 minutes 40 seconds
- candidate 3 is an electrocardiogram waveform from 5 minutes to 5 minutes 10 seconds
- candidate 4 is an electrocardiographic waveform from 7 minutes 30 seconds to 7 minutes 40 seconds.
- the head of adjacent sections of a plurality of sections is the time obtained by dividing the time length of the collected electrocardiogram waveform (10 minutes in the example in the figure) by the number of sections (4 in the example in the figure). (2.5 minutes in the case of the example in the figure).
- FIG. 19A shows a state in which the ECG waveforms of candidates 1 to 4 in FIG.
- the scroll bar S1 is moved rightward from the state shown in FIG. 19A as shown in FIG. 19A ⁇ FIG. 19B ⁇ FIG. 19C ⁇ FIG. 19D, all the electrocardiographic waveforms of the first to fourth candidates are moved by the scroll bar S1. Move right according to the amount.
- the calculation unit 101 or the display / printing control unit 106 shifts the extraction positions of the first to fourth candidate electrocardiogram waveforms in the direction indicated by the arrow in FIG. 18 according to the movement of the scroll bar S1.
- the scroll bar S1 is moved in the left direction
- all of the first to fourth candidate electrocardiographic waveforms are moved in the left direction in accordance with the amount of movement of the scroll bar S1.
- the electrocardiogram waveforms of a plurality of sections are extracted from the collected electrocardiogram waveforms, and the extracted electrocardiogram waveforms of the plurality of sections are displayed on one screen.
- the electrocardiogram waveform in each candidate section can be moved in the time direction in a lump according to the user operation. It can be done.
- the amount of movement in the substantial time direction with respect to the operation can be expanded, and the electrocardiogram that the user can see for the operation
- the shape can be increased.
- four electrocardiographic waveforms are moved in the time direction at a time, so that the electrocardiographic waveform for the operation is compared with the case where each candidate electrocardiographic waveform is moved individually.
- the amount of movement in the time direction can be quadrupled.
- the collection time is long. That is, if the collection time length is long, it takes time to visually confirm all the collected electrocardiogram waveforms.
- the ECG waveform of a plurality of sections is displayed on one screen, and if it is moved in the time direction collectively according to one operation, it is collected. The time required to confirm all the electrocardiogram waveforms can be shortened.
- an electrocardiogram waveform near the start of collection and an electrocardiogram waveform near the end of collection even the electrocardiogram waveforms at different times can be displayed on the same screen, and the electrocardiogram waveforms can be confirmed while comparing them.
- the electrocardiogram waveform can be confirmed while comparing the electrocardiogram waveform near the start and near the end.
- the extraction positions of the electrocardiogram waveforms of the plurality of sections are essentially the amount corresponding to the user operation. , To shift equally in the time direction.
- Such processing is effective in addition to the long-term electrocardiographic waveform confirmation and waveform comparison as in the embodiment.
- the collective movement processing of the electrocardiographic waveform according to the present embodiment is widely effective in confirming the state of changes in the time direction of the electrocardiographic waveform at different time points while comparing them with each other.
- the analysis result can be confirmed.
- the test result can be confirmed with a small number of procedures, and the electrocardiographic waveform and the analysis result can be simultaneously compared on the same screen.
- the electrocardiogram waveforms of a plurality of candidate sections are displayed on one screen, and the analysis results for the electrocardiogram waveforms of each candidate section are selectively displayed on the electrocardiogram waveforms of the plurality of candidate sections. Because it is possible to check the analysis findings while comparing the analysis section waveforms with a plurality of analysis unit section waveforms displayed on one screen, there are fewer procedures. It becomes possible to confirm the inspection result.
- the electrocardiogram analysis apparatus and the electrocardiogram waveform display method according to the present invention are executed by the electrocardiograph 100 .
- the electrocardiogram analysis apparatus and the electrocardiogram waveform display method according to the present invention include an arithmetic unit. It can also be executed by devices other than an electrocardiograph having a display unit.
- each process of the electrocardiogram analyzer and the electrocardiogram waveform display method according to the present invention can be realized by a device having a calculation unit and a display unit executing a program.
- a program for realizing each process of the electrocardiogram analysis apparatus and the electrocardiogram waveform display method according to the present invention is recorded in a computer-readable recording medium such as a memory, a disk, a tape, a CD, a DVD, and the like.
- the computer of the device having the display unit and the display unit may execute each process of the above-described embodiment by reading this program.
- the present invention can be applied to an electrocardiograph having a function of automatically analyzing an electrocardiogram, for example.
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Abstract
Description
心電図解析装置に用いられる心電波形表示方法であって、
解析対象の心電波形を解析対象波形画面に表示する解析対象波形画面表示ステップと、
ユーザ操作に応じて、前記解析対象の心電波形に関する解析結果を前記解析対象波形画面と同時に表示する解析結果表示ステップと、
を含む。
表示部と、表示制御部と、ユーザ操作部と、心電波形を解析することで解析結果を得る演算部と、を有し、
前記表示制御部は、前記ユーザ操作部へのユーザ操作に応じて、前記心電波形に関する解析結果を、対応する心電波形が表示された画面と同時に表示する。
図1は、本実施の形態の心電計の外観構成を示す斜視図である。心電計100は、本体部110と、表示部120と、から構成されている。本体部110には、入力キー104やプリンタ部105が設けられている。表示部120にはタッチパネル121が設けられている。
次に、本実施の形態の心電計100を用いた場合の心電図解析検査と、心電計100における画面表示について説明する。なお、本実施の形態では、心電図解析検査として、標準12誘導検査を行う場合について説明するが、本発明は標準12誘導検査以外の心電図解析検査に用いることもできる。
本実施の形態では、候補一覧画面における心電波形の表示形式を変更できるようになっている。具体的には、ユーザが図5に示した候補一覧画面の「画面選択」のボタンB10をタッチする回数に応じて、候補一覧画面が図9A-図9Dに示すように順に変更される。
次に、記憶部103に一時的に保存された収集波形から、候補区間の波形を抽出する本実施の形態の抽出方法について説明する。ここでは、収集時間が60秒であり、1つの候補区間が10秒であり、4つの候補区間を抽出する例について説明する。なお、上述したように収集時間は例えば30秒~10分(1秒刻み)で設定可能であり、候補区間の区間長も例えば8~24秒で設定可能であり、一覧表示及び解析を行う候補区間の数も4に限らない。
図10は、候補区間の心電波形を、ノイズ区間を除外して抽出する方法の説明に供する図である。図の最上段の波形は記憶部103に一時的に保存されている60秒間の収集波形を示す。2段目は収集波形を先頭から10秒毎に区切って4つの候補区間を形成した様子を示す図であり、3段目は本実施の形態によるノイズ区間を除外して候補区間を抽出した様子を示す図である。
図11は、不整脈波形が含まれる候補区間を抽出する方法の説明に供する図である。図11に示すように、演算部101は不整脈が発生している位置を検出し、その位置を中心にして、網掛けで示した候補1~4の4つの候補区間の心電波形を、候補一覧画面(図5)に表示される心電波形として、及び、解析対象の心電波形として、抽出する。このように、不整脈波形が含まれる候補区間を表示及び解析する候補区間として抽出することにより、心電図検査に適した表示及び解析を行うことができるようになる。
抽出しようとする候補区間に対して、収集波形データが不足している場合には、候補区間が重複するように候補区間を抽出してもよい。図14及び図15にその例を示す。図14及び図15の例では、抽出しようとする候補区間の合計時間が10秒×4=40秒なのに対して、収集波形の長さは35秒なので、収集波形データが不足している。
実際上、設定により決められた長さの収集波形から、決められた数の候補区間を抽出するにあたっては、様々な状況が想定される。例えば収集波形の中に不整脈波形が候補区間の数よりも多い場合などが想定される。そこで、ここでは候補区間を抽出する際の優先度について説明する。
上述したように、候補一覧画面に表示される複数の候補区間の心電波形は、演算部101によって抽出される。この候補区間の心電波形は、上述したように、演算部101によって解析を行うのに適切であると判断された区間の波形である。
以上説明したように、本実施の形態によれば、心電波形と同時に、その心電波形に関する解析結果が表示される簡易ウィンドウW10を表示したことにより、画面を切り替えなくても解析結果を確認できるようになり、この結果、少ない手順で検査結果を確認できるとともに、同一画面上で同時に心電波形とその解析結果とを比較できるようになる。
101 演算部
102 測定部
103 記憶部
104 入力キー
105 プリンタ部
106 表示/印刷制御部
110 本体部
120 表示部
121 タッチパネル
A1 所見
A2 所見解説
A3 計測値
W1 選択枠
W10 簡易ウィンドウ
Claims (10)
- 心電図解析装置に用いられる心電波形表示方法であって、
解析対象の心電波形を解析対象波形画面に表示する解析対象波形画面表示ステップと、
ユーザ操作に応じて、前記解析対象の心電波形に関する解析結果を前記解析対象波形画面と同時に表示する解析結果表示ステップと、
を含む心電波形表示方法。 - 収集された心電波形から複数の解析単位区間の心電波形を抽出する解析単位区間抽出ステップを、さらに含み、
前記解析対象波形画面表示ステップでは、前記解析単位区間抽出ステップで抽出した複数の解析単位区間の心電波形を1画面中に表示し、
前記解析結果表示ステップでは、前記1画面中に表示された複数の解析単位区間の心電波形のうち、ユーザによって選択された解析単位区間の心電波形に関する解析結果を前記1画面と同時に表示する、
請求項1に記載の心電波形表示方法。 - 前記解析結果表示ステップでは、前記解析結果を半透明のウィンドウ内に表示する、
請求項1に記載の心電波形表示方法。 - 前記解析結果表示ステップでは、前記解析結果を重症度の高いものから順に表示する、
請求項1に記載の心電波形表示方法。 - 前記解析結果表示ステップでは、2つ以上の解析単位区間に関する2つ以上の解析結果を同時に表示する、
請求項2に記載の心電波形表示方法。 - 前記解析結果表示ステップでは、ユーザが画面を長押ししているときに、前記解析結果を表示する、
請求項1に記載の心電波形表示方法。 - 前記解析単位区間抽出ステップで抽出され、前記解析対象波形画面表示ステップで1画面中に表示される前記複数の解析単位区間は、ノイズ区間が除外されたもの、及び又は、不整脈波形を含むものである、
請求項2に記載の心電波形表示方法。 - 表示部と、表示制御部と、ユーザ操作部と、心電波形を解析することで解析結果を得る演算部と、を有し、
前記表示制御部は、前記ユーザ操作部へのユーザ操作に応じて、前記心電波形に関する解析結果を、対応する心電波形が表示された画面と同時に表示する、
心電図解析装置。 - 収集された心電波形から複数の解析単位区間の心電波形を抽出する解析単位波形抽出部を、さらに有し、
前記表示制御部は、前記解析単位波形抽出部で抽出された複数の解析単位区間の心電波形を1画面中に表示するとともに、前記1画面中に表示した複数の解析単位区間の心電波形のうち、ユーザによって選択された解析単位区間の心電波形に関する解析結果を前記1画面と同時に表示する、
請求項8に記載の心電図解析装置。 - 心電図解析装置に用いられる心電波形表示プログラムを格納し、コンピュータにより読み取り可能な記録媒体であって、
前記心電波形表示プログラムは、解析対象の心電波形を解析対象波形画面に表示する解析対象波形画面表示ステップと、ユーザ操作に応じて、前記解析対象の心電波形に関する解析結果を前記解析対象波形画面と同時に表示する解析結果表示ステップと、を含む、
記録媒体。
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