Background and Aims : Frequency of atherosclerosis and osteoporosis increases by ageing and vascular calcification is associated with osteoporosis. Despite diagnosis of osteoporosis is confirmed by bone mineral density (BMD); measure of L1 vertebrae computed tomography (CT) attenuation value is correlated with BMD measurements. In this study, we aimed to evaluate relationship between vascular calcification and CT diagnosed osteoporosis.Methods: Patients who underwent CT for TAVR planning between 2013 and 2020 were screened and L1 vertebrae CT attenuation values (HU) were measured for the assessment for osteoporosis. Cut-off value for osteoporosis diagnosis was determined as 135 HU. Parameters regarding vascular calcification were also measured from CT images.Conclusions: Osteoporosis is associated with vascular calcification with several underlying mechanisms. This study shows that presence of renal artery stenosis and both presence and severity of MAC are more frequent in patients with osteoporosis. Background and Aims : Frequency of atherosclerosis and osteoporosis increases by ageing and vascular calcification is associated with osteoporosis. Despite diagnosis of osteoporosis is confirmed by bone mineral density (BMD); measure of L1 vertebrae computed tomography (CT) attenuation value is correlated with BMD measurements. In this study, we aimed to evaluate relationship between vascular calcification and CT diagnosed osteoporosis. Methods: Patients who underwent CT for TAVR planning between 2013 and 2020 were screened and L1 vertebrae CT attenuation values (HU) were measured for the assessment for osteoporosis. Cut-off value for osteoporosis diagnosis was determined as 135 HU. Parameters regarding vascular calcification were also measured from CT images. Conclusions: Osteoporosis is associated with vascular calcification with several underlying mechanisms. This study shows that presence of renal artery stenosis and both presence and severity of MAC are more frequent in patients with osteoporosis.