Keywords:
Ischaemia / Infarction, Contrast agent-intravenous, MR-Diffusion/Perfusion, MR, Cardiac
Authors:
E. cannizzaro, P. Palumbo, L. Panebianco, F. Bruno, L. Patriarca, R. Masi, E. Di Cesare, C. Masciocchi; L'Aquila/IT
Results
A total of 72 patients with known CAD was analyzed.
We divided our patients in two groups,
based on perfusion and LGE images positivity: 1.
infartuated/ischemic patients and 2.
Non ischemic patients.
1. Infartuated/Ischaemic Patients.
38 patients showed infuartuated (with myocardial scar suggestive for underlying myocardial infarction ) or ischemic (reversible perfusion defect during adenosin infusion) myocardium.
As expected,
this patient showed high values of T1 mapping at rest (1412,48±58ms in infartuated patients and 1,300.12±68.36ms in ischaemic patients) and no significative reactivity during adenosine infusion (p value: 0,305),
with high ECV value (35,4%) (fig.
3).
2. Non Ischaemic Patients
34 patients showed negative perfusion and LGE images.
19 of these showed high values of T1 mapping at rest (1301±44ms) and no significant modification during stress (p value: 0,21) with ECV more than normal values (29,9%) (fig.
4).
The remaining 15 showed normal values (T1 values about 1102±42ms at rest,
with significative responsivity during adenosine infusion; p value: 0,0167; ECV: 23%).