Get ECG Wave Data from Dicom Image

Hai friends, I need to Get wave form data (it is one of tag in dicom tags) using DicomInfo. But it return data as uint16 . But the data is number with sign(+ or -). So i convert the uint16 to number . it is useless because already data given as zero for negative. So I can't plot Correct graph for ECG signal.

 Check the above marked pic in that acutally value is number with sign(- or +) but when i open it. it gives wrong data .

[Star Strider]

Post the EKG data here so we can have a look at it. Two possibilities:

1. It contains only R-wave markers (although that could be done with uint8);
2. It is the complete EKG but with a positive offset so all the data are still there.