Left ventricular contrast injection with rotational C-arm CT improves accuracy of aortic annulus measurement during cardiac catheterisation

Jan C. Balzer1, MD; Yang Chul Boering1, MD; Sabine Mollus2, MSc; Meike Schmidt10, MS; Katharina Hellhammer1, MD; Patrick Kroepil3, MD; Ralf Westenfeld1, MD; Tobias Zeus1, MD; Gerald Antoch3, MD; Axel Linke4, MD; Ulrich Steinseifer5, PhD; Marc W. Merx1, MD; Malte Kelm1*, MD