Table 2 Comparison of hemodynamic parameters between significant stenosis group and non-significant stenosis group of RAS in TAK patients

RPSV (cm/s)

112.50 (90.00,139.00)

256.00 (190.00,372.50)

 − 10.341

 < 0.001

RAR

0.92 (0.67,1.23)

1.50 (1.21,2.90)

 − 7.997

 < 0.001

RIR

3.20 (2.40,4.36)

8.12 (6.31,15.73)

 − 10.477

 < 0.001

IPSV (cm/s)

36.67 ± 12.13

30.51 ± 14.04

3.541

 < 0.001

IEDV (cm/s)

11.82 ± 4.47

12.29 ± 4.95

 − 0.751

0.454

IRI

0.66 ± 0.11

0.58 ± 0.14

5.398

 < 0.001

AT

 < 0.07 s

180 (81.1%)

28 (40.6%)

42.354

 < 0.001

 ≥ 0.07 s

42 (18.9%)

41 (59.4%)