“…In order to lower heart rate during the CT scans, ivabradine was given to T1DM patients, while metoprolol was given to controls, and this might also have affected the results. However correcting for heart rate in the multivariable analysis did not change the results and our findings of higher resting perfusion in patients with diabetes are supported by other studies previous mentioned in this article [7,9]. When betablockage was given to the controls, this could leave the alpha-vasoconstrictor effect unopposed, which may in its turn have reduced myocardial blood flow in the controls.…”