在python中检测给定ECG数据中的PQRST峰

Question

我正在使用 Python 进行心电图分析项目。我对python完全陌生。而且我一开始就被卡住了。

这是数据：

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6233,6238,6258,6252,6243,6252,6240,6227,6240,6252,6244,6234,6247,6230,6233,6243,6241,6238,6243,6255,6234,6226,6243,6244,6241,6250,6247,6226,6233,6244,6234,6233,6243,6234,6221,6244,6241,6217,6231,6244,6234,6233,6243,6231,6224,6241,6238,6220,6237,6244,6221,6228,6251,6221,6211,6231,6231,6209,6214,6231,6214,6209,6219,6211,6207,6214,6216,6211,6217,6221,6196,6195,6216,6207,6202,6207,6209,6199,6197,6211,6189,6188,6217,6207,6196,6206,6203,6186,6200,6206,6189,6186,6200,6189,6175,6189,6190,6175,6192,6204,6179,6185,6199,6179,6179,6196,6189,6178,6188,6192,6183,6182,6204,6195,6188,6206,6211,6188,6182,6192,6209,6197,6190,6182,6180,6207,6199,6182,6199,6213,6193,6197,6226,6214,6200,6216,6204,6202,6211,6210,6206,6202,6210,6195,6178,6195,6211,6197,6203,6199,6183,6180,6193,6182,6190,6202,6197,6182,6195,6209,6193,6193,6223,6231,6220,6226,6216,6209,6216,6238,6221,6224,6244,6230,6221,6224,6227,6227,6227,6234,6224,6210,6224,6219,6223,6235,6241,6235,6259,6281,6275,6266,6290,6295,6283,6272,6268,6261,6275,6290,6268,6257,6286,6307,6319,6351,6364,6362,6367,6361,6350,6338,6341,6338,6336,6331,6314,6279,6286,6300,6300,6300,6299,6269,6240,6241,6240,6231,6248,6251,6241,6226,6226,6220,6217,6217,6199,6166,6172,6176,6156,6154,6173,6189,6180,6197,6206,6189,6197,6202,6172,6162,6176,6179,6156,6156,6180,6188,6188,6182,6151,6131,6133,6109,6073,6090,6120,6123,6142,6168,6210,6303,6441,6602,6773,6966,7170,7337,7541,7739,7927,8035,8013,7841,7692,7575,7344,7034,6777,6557,6313,6130,6056,5996,5956,5952,5972,5993,6041,6078,6085,6110,6159,6161,6149,6171,6171,6156,6173,6178,6165,6161,6175,6161,6145,6166,6193,6182,6188,6192,6183,6158,6164,6148,6149,6171,6175,6171,6180,6199,6200,6202,6224,6219,6204,6203,6204,6175,6182,6202,6193,6197,6216,6219,6223,6226,6231,6243,6244,6241,6227,6221,6233

（注意：这些是程序中提到的文件中的拆分值）

这是我从心电图机得到的值，我需要找出这些数据中的 P、Q、R、S、T 峰值。

def findHighPeaks(A,count):
pivots   = [i for a,(i,b),c in zip(A,enumerate(A[1:],1),A[2:])
                            if a>b and b<c or a<b and b>c]
iWaves = [(left,mid,right) for left,mid,right
                           in  zip([0]+pivots,pivots,pivots[1:]+[len(A)-1])]
peaks  = [(A[left],A[mid],A[right]) for left,mid,right in iWaves
                                    if A[left]<A[mid]]
highPeaks = set(sorted(peaks,key=lambda p:p[1])[-count:])
return [p for p in peaks if p in highPeaks]

import re
import matplotlib.pyplot as plt
f=open( "D:/sharefolder narasima/New folder/ECG20201005172540.sh","r" )
Raw_file=f.read()
start_data=Raw_file.find("<ECG data>")+len("<ECG data>")
end_data=Raw_file.find("</ECG data>")
Sorted_data=Raw_file[start_data:end_data]
A=Sorted_data
x = re.split('~|#\*#', A)
lead_2_data= [list(filter(None, i.split(","))) for i in x if  ":" not in i]
Device_data = [list(filter(None, i.split(","))) for i in x if  ":" in i]
ECG_data=([x for x in lead_2_data if x])
array=[list (i)for i in zip(*ECG_data)]
lead_2=(array[1])
A = list(map(int, lead_2))
Q,R,S = zip(*findHighPeaks(A,13))
print("R=",R)
print("Q=",Q)
print("S=",S)
for x in Q,R:
     plt.plot(x)
for y in R,S:
     plt.plot(y)
plt.plot(R)

我一直这样做，这段代码帮助我找到 Q、R、S 值。我也需要找出 P 和 T 的值，在这个程序中我需要给出计数值。是否可以自动获取计数值。

我也尝试过使用神经套件库，但效果不大。

Answer 1

我不确定是否有计算 P、Q、S、T 峰值的算法。但这是获取所有 Rpeaks 的简单方法。请参阅此documentation 了解更多信息

>>> pip install biosppy

>>> import biosppy

>>> a = list(ecg_raw_data) #ecg_raw_data = Data you provided in the question
>>> ecg = biosppy.signals.ecg.ecg(a)

>>> rpeaks = ecg['rpeaks']

>>> array([ 562,  996, 1419, 1840, 2271, 2702])