Figure 4

Average heart rate before β-blocker administration and during the main scan in the low-dose landiolol group, the high-dose landiolol group, and the propranolol group. HR indicated heart rate; LD, low dose; HD, high dose.
Average heart rate before β-blocker administration and during the main scan in the low-dose landiolol group, the high-dose landiolol group, and the propranolol group. HR indicated heart rate; LD, low dose; HD, high dose.