Bar graph illustrating the rate of leak detection by CTM and MRM Bar graph illustrating the rate of leak detection by CTM and MRM. A statistically significant difference was observed between CTM and MRM by a 2-tailed paired t test (P = .011). Bar graph illustrating the rate of leak detection by CTM and MRM. A statistically significant difference was observed between CTM and MRM by a 2-tailed paired t test (P = .011). J.L. Chazen et al. AJNR Am J Neuroradiol 2014;35:2007-2012 ©2014 by American Society of Neuroradiology