A Database for Evaluation of Algorithms for Measurement of QT and Other Waveform Intervals in the ECG

W e present here a QT database designed j b r evaluation of algorithms that detect waveform boundaries in the EGG. T h e dataabase consists of 105 fifteen-minute excerpts of twochannel ECG Holter recordings, chosen to include a broad variety of QRS and STT morphologies. Waveform bounda,ries f o r a subset of beats in, these recordings have been manually determined by expert annotators using a n interactive graphic disp1a.y to view both signals simultaneously and to insert the annotations. Examples of each m,orvhologg were inchded in this subset of uniaotated beats; at least 30 beats in each record, 3622 beats in all, were manually a:anotated in Ihe database. In 11 records, two indepen,dent sets of ennotations have been inchded , to a.llow inter-observer variability slwdies. T h e Q T Databnse is available on a CD-ROM in the format previously used fo r the MIT-BJH Arrhythmia Database ayad the European ST-T Database, f rom which some of the recordings in the &T Database have been obtained.