“…Yet, they found an impaired image quality in a minority of segments after NTG and a "disturbed assessment of vasodilatory response in the left circumflex coronary artery (LCx)". 22 In recent MRCA studies, NTG was either not given 16,[23][24][25][26][27] or given in variable doses, 15,17,[28][29][30] without investigating its effect on overall MRCA performance. For coronary computed tomography, it has been shown that NTG resulted in an improved evaluation of more coronary segments, better image quality and improved diagnostic accuracy, and its application is, therefore, recommended in respective guidelines.…”