Evaluation of Electrocardiogram-Gated Computed Tomography Angiography to Quantify Changes in Geometry and Dynamic Behavior during the Cardiac Cycle of the Nellix Endovascular Sealing System
Table 2
Preoperative (PRE) versus postoperative (POST) changes in neck anatomy.
N = 8
PRE 20 (%)
PRE 78 (%)
Difference preimplantation
values
POST 20 (%)
POST 78 (%)
Difference postimplantation
values
values PRE vs POST 20 (%)
values PRE vs POST 78 (%)
Suprarenal diameter (mm)
27.8 (26.9–30.9)
29.1 (27.6–31.4)
1.3
0.089
28.8 (27.0–30.1)
28.4 (26.5–30.8)
−0.04
0.618
0.283
0.684
Area suprarenal diameter (mm2)
567.0 (474.8–677.1)
604.9 (491.0–696.5)
37.9
0.208
610.4 (540.6–668.3)
589.5 (512.8–663.4)
−20.9
0.305
0.124
0.945
Infrarenal diameter (mm)
22.7 (20.9–27.8)
24.4 (23.5–29.8)
1.7
0.634
27.0 (25.8–34.7)
27.6 (26.4–32.7)
0.6
0.636
<0.001
<0.001
Area of infrarenal diameter (mm2)
426.1 (376.6–648.5)
435.0 (405.1–657.7)
8.9
0.409
529.6 (492.9–870.4)
571.5 (469.7–764.9)
41.9
0.469
<0.001
<0.001
Diameter beneath lowest RA (mm)
26.3 (22.0–27.8)
25.1 (24.6–27.3)
−1.2
0.786
26.4 (24.1–30.1)
27.6 (25.8–31.9)
1.2
0.393
0.038
0.044
angle (°)
12.5 (8.0–31.0)
12.5 (7.0–30.8)
0
—
11.5 (7.8–19.3)
19.0 (7.0–30.0)
7.5
0.243
0.140
0.887
angle (°)
14.0 (7.8–18.8)
16.5 (6.5–24.0)
2.5
0.404
9.5 (6–15.5)
6.0 (3.3–15.5)
−3.5
0.522
0.243
0.066
Neck length (mm)
27.0 (13.3–34.1)
25.6 (13.5–34.6)
−1.4
0.840
21.6 (10.0–32.8)
19.5 (8.3–33.8)
−2.1
0.701
0.001
0.044
Neck total volume (mL)
9.4 (6.2–18.1)
9.9 (6.9–15.8)
0.5
0.876
9.3 (4.8–20.6)
9.9 (4.3–17.5)
0.6
0.134
0.434
0.890
Neck lumen volume (mL)
7.4 (4.6–14.7)
6.4 (5.2–12.7)
−1
0.240
7.4 (3.6–14.4)
8.7 (3.5–14.0)
1.3
0.661
0.606
0.662
Right renal angulation (°)
44.0 (39.5–69.0)
49.5 (39.8–72.5)
5.5
0.142
43.5 (38.0–54.8)
50.0 (28.0–58.3)
6.5
0.643
0.838
0.385
Left renal angulation (°)
52.5 (35.8–69.5)
53.5 (36.8–67.8)
1.0
0.866
52.5 (38.8–76.5)
56.0 (40.8–61.0)
3.5
0.675
0.628
0.892
Data are displayed as median, followed by interquartile range (IQR). Difference in significance in values when preimplantation and postimplantation values were compared.
