Skip to main content

Table 2 Measured ultrasound parameters irradiated and non-irradiated side

From: Assessing radiation-induced carotid vasculopathy using ultrasound after unilateral irradiation: a cross-sectional study

Parameter Location Time point Irradiated side n Control side n P value
Plaque CCA/ICA n/a 7 26 3 26 0.291
IMT (mm) Distal CCA Diastole 0.54 [0.50–0.61] 26 0.50 [0.44–0.54] 26 0.001*
ICA 0.45 [0.44–0.46] 26 0.45 [0.44–0.47] 23 0.59
PWV (m/s) Mid-CCA Begin-systole 4.89 [4.22–5.75] 25 4.56 [3.78–5.58] 22 0.36
End-systole 6.77 [5.82–7.78] 24 6.44 [5.16–6.97] 22 0.24
SWV (m/s) Proximal CCA Averaged over cardiac cycle A: 4.13 [3.56–4.61] 26 A: 4.17 [3.91–4.39] 25 0.48
P: 4.30 [3.88–4.71] 26 P: 4.06 [3.84–4.57] 26 0.42
Mid-CCA A: 4.68 [4.14–5.04] 26 A: 4.44 [3.63–4.70] 24 0.03*
P: 4.52 [4.08–5.34] 26 P: 4.50 [4.05–5.03] 24 0.46
Distal CCA A: 4.67 [3.75–5.10] 25 A: 4.25 [3.58–4.61] 26 0.06
P: 4.40 [3.96–5.24] 25 P: 4.48 [3.84–5.13] 26 0.74
ICA A: 2.63 [2.29–3.54] 23 A: 2.67 [2.33–3.18] 22 0.34
P: 2.84 [2.34–3.19] 22 P: 2.23 [1.82–2.62] 19 0.01*
  1. IMT intima-media thickness, PWV pulse wave velocity, SWV shear wave velocity, CCA common carotid artery, ICA internal carotid artery, A anterior; P posterior
  2. *Significant difference (p < 0.05) between irradiated and control side
  3. 1Fisher’s exact test