A novel vision-based system for quantitative analysis of abdominal aortic aneurysm deformation

Table 2 Changes in deformation factor n_i for the sequence of smaller and bigger squares placed one after another inside the container (with and without water) and different distances (0.40 m, 0.35 m, 0.30 m) between the camera’s lens and analyzed squares

Object	Environment	Distance [m]	Average deformation factor n_i [-]	P
Square 0.05 × 0.05 m → square 0.10 × 0.10 m	Without water	0.30	4.03018 ± 0.00053	0.6615
	With water	0.30	4.03016 ± 0.00054	0.6615
	Without water	0.35	4.03016 ± 0.00053	0.4856
	With water	0.35	4.03019 ± 0.00052	0.4856
	Without water	0.40	4.03021 ± 0.00083	0.5630
	With water	0.40	4.03016 ± 0.00071	0.5630

For each case, n = 220 analyses were performed. P values were calculated using Student’s t test

ISSN: 1475-925X