![Manual QT interval measurement with a smartphone-operated single-lead ECG versus 12-lead ECG: a within-patient diagnostic validation study in primary care | BMJ Open Manual QT interval measurement with a smartphone-operated single-lead ECG versus 12-lead ECG: a within-patient diagnostic validation study in primary care | BMJ Open](https://bmjopen.bmj.com/content/bmjopen/11/11/e055072/F1.large.jpg)
Manual QT interval measurement with a smartphone-operated single-lead ECG versus 12-lead ECG: a within-patient diagnostic validation study in primary care | BMJ Open
![Asbjørn Støylen al Twitter: "Why is QT interval corrected for RR interval by nonlinear formula, while LVET is corrected by a linear formula (LVETc = LVET + 1.7xHR)? https://t.co/CGNOAnJdpG" / Twitter Asbjørn Støylen al Twitter: "Why is QT interval corrected for RR interval by nonlinear formula, while LVET is corrected by a linear formula (LVETc = LVET + 1.7xHR)? https://t.co/CGNOAnJdpG" / Twitter](https://pbs.twimg.com/media/DLiu2fzW4AEATau.jpg)
Asbjørn Støylen al Twitter: "Why is QT interval corrected for RR interval by nonlinear formula, while LVET is corrected by a linear formula (LVETc = LVET + 1.7xHR)? https://t.co/CGNOAnJdpG" / Twitter
![Examples of QT measurement and correction (QTc). ECG strips from lead... | Download Scientific Diagram Examples of QT measurement and correction (QTc). ECG strips from lead... | Download Scientific Diagram](https://www.researchgate.net/publication/321673422/figure/fig3/AS:613969165291529@1523393064570/Examples-of-QT-measurement-and-correction-QTc-ECG-strips-from-lead-II-recorded-at-25.png)
Examples of QT measurement and correction (QTc). ECG strips from lead... | Download Scientific Diagram
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