Husmann, L; Herzog, B A; Pazhenkottil, A P; Buechel, R R; Nkoulou, R; Ghadri, J R; Valenta, I; Burger, I A; Gaemperli, O; Wyss, C A; Kaufmann, P A (2011). Lowering heart rate with an optimised breathing protocol for prospectively ECG-triggered CT coronary angiography. British Journal of Radiology, 84(1005):790-795.
The breath-hold level to best reduce heart rate for CTCA should be individually assessed prior to scanning because a mean heart rate reduction of 5 bpm can be achieved.