Cardiovascular magnetic resonance in heart transplant patients: diagnostic value of quantitative tissue markers: T2 mapping and extracellular volume fraction, for acute rejection diagnosis

Table 3 T2, T1 and ECV at mid level of the left ventricle in heart transplant patients and in controls

	Controls n = 34	Heart transplant patients		Kruskal-Wallis p-Value	Group A comparison	Group B comparison
	Controls n = 34	No rejection n = 24	Rejection n = 7	Kruskal-Wallis p-Value	Group A comparison	Group B comparison
T2 mapping (ms)	51.0 [49.0–53.0]	51.8 [50.1–53.6]	55.7 [54.0–59.7]	0.0131	ns	significant
T1 mapping before contrast (ms)	956 [948–971]	983 [956–1021]	993 [954–1050]	0.0178	significant	ns
T1 mapping after contrast (ms)	470 [448–501]	483 [461–500]	507 [485–538]	0.1705	ns	ns
ECV (%)	22.8 [21.6–24.5]	27.4 [24.4–31.5]	29.5 [27.8–36.3]	< 0.0001	significant	significant

ECV = Extra-Cellular Volume; ns = non significant.
Multiple group comparison was performed by the kruskal-wallis test expressed by the p-value. Comparison between each subgroup was tested with Dunn’s multiple comparison test; Group A comparison refers to a comparison between controls and the no rejection group, whereas Group B comparison refers to control and rejection group. Values are median [first (Q1) and third (Q3) quartiles].

ISSN: 1532-429X