Association of plasma neutrophil gelatinase-associated lipocalin and thoracic aorta calcification in maintenance hemodialysis patients with and without diabetes

Table 2 Thoracic aorta calcification incidences of total MHD patients, MHD patients with and without diabetes

Characteristic	Total (N = 62)	With diabetes (N = 27)	Without diabetes (N = 35)	P
CT	N = 43	N = 22	N = 21
TC	35, 81.4%	19, 86.4%	16, 76.2%	0.457
ARC	13, 30.2%	7, 31.8%	6, 28.6%	1.000
ATAC	15, 34.9%	8, 36.8%	7, 33.3%	1.000
AAC	35, 81.4%	19, 86.4%	16, 76.2%	0.457
DTAC	32, 74.4%	18, 81.8%	14, 66.7%	0.310
Routine chest radiography	N = 24	N = 6	N = 18
AAC	18, 75%	6, 100%	12, 66.7%	0.277
AAC by CT or chest radiography	N = 62	N = 27	N = 35
AAC by CT or chest radiography	49, 79.0%	24, 88.9%	25, 71.4%	0.122

Thoracic aorta calcium estimated by computed tomography (CT): calcification volume quantified by extracting the aorta calcium with density ≥ 130 HU from the volume-rendered image under the assistance of semi-automatic software; thoracic aorta was divided into 4 sites, aortic root calcium (ARC), ascending aorta calcium (ATAC), AAC (aortic arch calcium), DTAC(descending thoracic aorta calcium) and TC (total calcium) were all calculated
AAC by routine chest radiography: the circumferences of aortic arch was divided into 16 sites, the number of sectors with calcification was calculated and multiplied by 100 to express the results as a percentage

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