Viewing ECG Digitized Signals in PTB

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gtroey86 Member Join Date: Oct 2008 Location: Malaysia Posts: 7	Viewing ECG Digitized Signals in PTB 12/17/2008 11:05 PM
	Hello everyone. I'm Roey from M'sia. I'm doing ECG analyse by using neural network. A very helpful friend here give me this web link and I find it is very useful. http://www.physionet.org/physiobank/database/ptbdb/ http://www.physionet.org/cgi-bin/chart It contains a lot of database and ECG chart. But the problem is the PTB ECG signals are quite blurred as all waves are stacked together. So, I wish to look on the digitized signal given in the web and hope these digitized signals contain every single wave. but i do not know how to see the digitized signals. Please help.
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babybear Guru Join Date: Jun 2008 Location: USA/Europe Posts: 4547 Good Answers: 68	#1 Re: Viewing ECG Digitized Signals in PTB 12/19/2008 8:04 AM
	Hello gtroey86: *It contains a lot of database and ECG chart. But the problem is the PTB ECG signals are quite blurred as all waves are stacked together.* I am surprised about what you say above. All the ECG machines I have been connected to have adjustments to split the signal, and also to only receive say, 4 out of 8? That is my understanding anyway. I do not know enough to help more, sorry. Take care and have a wonderful holiday.................... __________________ Take it easy, bb. >"HEAR & you FORGET<>SEE & you REMEMBER<>DO & you UNDERSTAND"<=$=\|O\|=$=>"Common Sense is Genius dressed in its Working Clothes"<>[Ralph Waldo Emerson]
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gtroey86 Member Join Date: Oct 2008 Location: Malaysia Posts: 7	#2 In reply to #1 Re: Viewing ECG Digitized Signals in PTB 12/19/2008 9:06 AM
	Erm.. Actually, I never see the real ECG machine output. I only depends on the ECG charts given by the MIT webpage. It contains all 12 leads ECG signal and 3 leads vx, vy and vz. They are seperated but some of the ECG complexes like R waves are stacked with anothers lead's wave. (in PTB database) Thanks for your wishes. Same to you. Take care. :)
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gtroey86 Member Join Date: Oct 2008 Location: Malaysia Posts: 7	#3 In reply to #2 Re: Viewing ECG Digitized Signals in PTB 12/19/2008 8:32 PM
	Problems solved.. Thanks you.
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babybear Guru Join Date: Jun 2008 Location: USA/Europe Posts: 4547 Good Answers: 68	#4 In reply to #3 Re: Viewing ECG Digitized Signals in PTB 12/19/2008 11:27 PM
	Hello gtroey86: How did you solve this problem. Letting others know how you managed your problem with help them in turn! Take care and have a wonderful holiday............. __________________ Take it easy, bb. >"HEAR & you FORGET<>SEE & you REMEMBER<>DO & you UNDERSTAND"<=$=\|O\|=$=>"Common Sense is Genius dressed in its Working Clothes"<>[Ralph Waldo Emerson]
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gtroey86 Member Join Date: Oct 2008 Location: Malaysia Posts: 7	#5 In reply to #4 Re: Viewing ECG Digitized Signals in PTB 12/21/2008 12:32 AM
	Oh.. erm.. I did not notice that MIT webpage has a function call rdsamp-O-Matic. All digitized signals for every single lead is represented in rdsamp-O-Matic. So, in order to see a single lead waveform, I just copy one of the lead's data(eg. lead II) from rdsamp-O-matic and plot it by using matlab. Viewing ECG signals in Chart-O-Matic is a little bit hard because it mix all the waveform together. I found this solution in the "FAQ" at the physiobank.
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babybear Guru Join Date: Jun 2008 Location: USA/Europe Posts: 4547 Good Answers: 68	#6 In reply to #5 Re: Viewing ECG Digitized Signals in PTB 12/21/2008 3:24 PM
	Hello gtroey86: I have not used that site before but, have used similar chart sites and they are all pretty much designed along the same lines. I thought I would not get in touch for a few days and by then you may have sorted out how to use the site! Take care, and have a wonderful holiday................ __________________ Take it easy, bb. >"HEAR & you FORGET<>SEE & you REMEMBER<>DO & you UNDERSTAND"<=$=\|O\|=$=>"Common Sense is Genius dressed in its Working Clothes"<>[Ralph Waldo Emerson]
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