Table 1 Protocols for comparison are: the default 1.5T protocol, and default 1.5T protocol with GRE readout (A&B); the three best protocols (lowest p-value, i.e. best discrimination between measured T2), two GRE (C&D) and one SSFP (E); the best protocol with an SSFP readout substituted for GRE (F).
From: Optimising acquisition parameters for myocardial T2 mapping using T2-prep at 3T
Protocol (Figure 1a) | Protocol details | Mean difference in T2/ms | Quadrature-combined s.d. over all heart rates | t-test p-value | Comment |
|---|---|---|---|---|---|
A | SSFP, 50°, linear, 0-32-55ms | 1.2 | 3.5 | 0.575 | 1.5T default protocol[1] |
B | GRE, 9°, linear, 0-32-55ms | 1.0 | 3.5 | 0.656 | 1.5T default protocol with GRE readout |
C | GRE, 18°, centric, 32-0-55ms | 4.0 | 1.0 | 0.003 | Lowest p-value |
D | GRE, 18°, centric, 32-55-0ms | 4.0 | 1.0 | 0.003 | Lowest p-value |
E | SSFP, 20°, centric, 0-55-32ms | 2.6 | 0.95 | 0.011 | Lowest p-value with SSFP readout |
F | SSFP, 50°, centric, 32-0-55ms | 3.5 | 2.3 | 0.057 | Best protocol but with SSFP readout |