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Table 4 Territorial analysis of longitudinal strains in the endocardial layer for the coronary arteries

From: Myocardial deformation after radiotherapy: a layer-specific and territorial longitudinal strain analysis in a cohort of left-sided breast cancer patients (BACCARAT study)

 

Low dose to the LV N = 42

High dose to the LV N = 22

V0

V6

V0

V6

TLS - LAD, %

Mean ± SD

− 22.9 ± 4,3

−21.8 ± 5,0

− 22.7 ± 3.4

−20.7 ± 4.5

p-value

0.20

0.05a

TLS - Cx, %

Mean ± SD

− 19.0 ± 4.9

− 17.5 ± 5.1

−19.5 ± 3.8

−17.9 ± 5.5

p-value

0.10

0.25

TLS - RCA, %

Mean ± SD

− 16.2 ± 4.7

−16.2 ± 5.2

−16.9 ± 4.8

−15.6 ± 5.1

p-value

0.97

0.35

  1. Left Ventricle; TLS Territorial Longitudinal Strain, LAD Left Anterior Descending artery, Cx Circumflex artery, RCA Right Coronary Artery. Low dose to the LV corresponds to patients receiving < 8.6 Gy to the LV (66th percentile of dose distribution among the 64 patients). High dose to the LV corresponds to patients receiving > 8.6 Gy. aNot significant after Holm-Bonferroni method for multiple testing
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Radiation Oncology

ISSN: 1748-717X

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