Incidence and extent of LA fibrosis in the entire LA and each predefined region in LA substrate-positive patients (n = 39).
| Incidence of LA fibrosis | Surface area in cm2 | LA fibrosis area in cm2 | Relative LA fibrosis area | |
|---|---|---|---|---|
| Absolute (relative) | Median (IQR) | Median (IQR) | Median (IQR) | |
| AW | 24 (62) | 18 (16–22) | 7.4 (4.1–12.8) | 37% (22–71) |
| PW | 20 (51) | 20 (15–24) | 8.2 (3.9–13.9) | 35% (21–77) |
| LW | 2 (5) | 6 (5–6) | 2.8 (1.3–4.2) | 48% (24–71) |
| SPT | 20 (51) | 23 (16–27) | 8.8 (4.4–14.2) | 42% (20–62) |
| IW | 7 (18) | 24 (19–30) | 4.1 (1.0–11.5) | 23% (5–38) |
| Entire LA | 39 (100) | 95 (76–109) | 16.1 (9.6–27.0) | 19% (11–27) |
| Incidence of LA fibrosis | Surface area in cm2 | LA fibrosis area in cm2 | Relative LA fibrosis area | |
|---|---|---|---|---|
| Absolute (relative) | Median (IQR) | Median (IQR) | Median (IQR) | |
| AW | 24 (62) | 18 (16–22) | 7.4 (4.1–12.8) | 37% (22–71) |
| PW | 20 (51) | 20 (15–24) | 8.2 (3.9–13.9) | 35% (21–77) |
| LW | 2 (5) | 6 (5–6) | 2.8 (1.3–4.2) | 48% (24–71) |
| SPT | 20 (51) | 23 (16–27) | 8.8 (4.4–14.2) | 42% (20–62) |
| IW | 7 (18) | 24 (19–30) | 4.1 (1.0–11.5) | 23% (5–38) |
| Entire LA | 39 (100) | 95 (76–109) | 16.1 (9.6–27.0) | 19% (11–27) |
Model of the LA and PVs in RAO and PA projection for quantification of LA fibrosis. Data are given as median (IQR) or number (n) and percentage (%) of patients. Anatomical landmark definitions: MA12, MA at 12 o’clock; MA4, MA at 4 o’clock; MA7, MA at 7 o’clock; MA11, MA at 11 o’clock; LS12, LS PV at 12 o’clock; RS12, RS PV at 12 o’clock; LI6, LI PV at 6 o’clock, and RI6, RI PV at 6 o’clock. Definition of surface regions as area enclosed by: AW = MA12, MA11, LS12, RS12; PW = LS12, RS12, LI6, RI6; LW = LI6, LS12, MA4, MA12; LA SPT = MA11, MA7, RI6, RS12; IW = LI6, RI6, MA7, MA4.
AW, anterior wall; IQR, interquartile range; IW, inferior wall; LA, left atrium; LI, left inferior; LS, left superior; LW, lateral wall; MA, mitral annulus; PA, posterior–anterior; PV, pulmonary vein; PW, posterior wall; RAO, right anterior oblique; RI, right inferior; RS, right superior; SD, standard deviation; SPT, septum.
Incidence and extent of LA fibrosis in the entire LA and each predefined region in LA substrate-positive patients (n = 39).
| Incidence of LA fibrosis | Surface area in cm2 | LA fibrosis area in cm2 | Relative LA fibrosis area | |
|---|---|---|---|---|
| Absolute (relative) | Median (IQR) | Median (IQR) | Median (IQR) | |
| AW | 24 (62) | 18 (16–22) | 7.4 (4.1–12.8) | 37% (22–71) |
| PW | 20 (51) | 20 (15–24) | 8.2 (3.9–13.9) | 35% (21–77) |
| LW | 2 (5) | 6 (5–6) | 2.8 (1.3–4.2) | 48% (24–71) |
| SPT | 20 (51) | 23 (16–27) | 8.8 (4.4–14.2) | 42% (20–62) |
| IW | 7 (18) | 24 (19–30) | 4.1 (1.0–11.5) | 23% (5–38) |
| Entire LA | 39 (100) | 95 (76–109) | 16.1 (9.6–27.0) | 19% (11–27) |
| Incidence of LA fibrosis | Surface area in cm2 | LA fibrosis area in cm2 | Relative LA fibrosis area | |
|---|---|---|---|---|
| Absolute (relative) | Median (IQR) | Median (IQR) | Median (IQR) | |
| AW | 24 (62) | 18 (16–22) | 7.4 (4.1–12.8) | 37% (22–71) |
| PW | 20 (51) | 20 (15–24) | 8.2 (3.9–13.9) | 35% (21–77) |
| LW | 2 (5) | 6 (5–6) | 2.8 (1.3–4.2) | 48% (24–71) |
| SPT | 20 (51) | 23 (16–27) | 8.8 (4.4–14.2) | 42% (20–62) |
| IW | 7 (18) | 24 (19–30) | 4.1 (1.0–11.5) | 23% (5–38) |
| Entire LA | 39 (100) | 95 (76–109) | 16.1 (9.6–27.0) | 19% (11–27) |
Model of the LA and PVs in RAO and PA projection for quantification of LA fibrosis. Data are given as median (IQR) or number (n) and percentage (%) of patients. Anatomical landmark definitions: MA12, MA at 12 o’clock; MA4, MA at 4 o’clock; MA7, MA at 7 o’clock; MA11, MA at 11 o’clock; LS12, LS PV at 12 o’clock; RS12, RS PV at 12 o’clock; LI6, LI PV at 6 o’clock, and RI6, RI PV at 6 o’clock. Definition of surface regions as area enclosed by: AW = MA12, MA11, LS12, RS12; PW = LS12, RS12, LI6, RI6; LW = LI6, LS12, MA4, MA12; LA SPT = MA11, MA7, RI6, RS12; IW = LI6, RI6, MA7, MA4.
AW, anterior wall; IQR, interquartile range; IW, inferior wall; LA, left atrium; LI, left inferior; LS, left superior; LW, lateral wall; MA, mitral annulus; PA, posterior–anterior; PV, pulmonary vein; PW, posterior wall; RAO, right anterior oblique; RI, right inferior; RS, right superior; SD, standard deviation; SPT, septum.
