Related Experiment Video
Updated: Jun 5, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Coronary arterial calcification and thoracic spine mineral density in early menopause
1Department of Surgery, Mayo Clinic, 200 First St SW. Rochester, MN 55905, USA.
Insights
Coronary arterial calcification (CAC) and spine bone mineral density (vBMD) can be measured from the same scans in early postmenopausal women. Further research is needed to understand changes with age and estrogenic treatments.
Area of Science:
- Cardiovascular health and bone metabolism in postmenopausal women.
- Imaging techniques for assessing cardiovascular and bone health.
Background:
- Cardiovascular disease and osteoporosis are significant health concerns for women after menopause.
- Aortic calcification is linked to bone loss, but the relationship between coronary arterial calcification (CAC) and bone density is less understood.
Purpose of the Study:
- To investigate the association between coronary arterial calcification (CAC) and volumetric bone mineral density (vBMD) in women shortly after menopause.
- To establish a baseline for future studies on estrogenic treatments and their impact on cardiovascular and bone health.
Main Methods:
- Coronary arterial calcification (CAC) was quantified using 64-slice computed tomography.
- Volumetric bone mineral density (vBMD) was assessed from the same CT images.
- Serum and plasma concentrations of bone matrix proteins were measured using ELISA.
Main Results:
- CAC scores varied, with most women having no or low calcification.
- A trend suggested lower thoracic bone density with increasing CAC, though not statistically significant.
- Bone turnover markers were generally within normal ranges and did not correlate with age or time since menopause.
Conclusions:
- Coronary arterial calcification (CAC) and spine vBMD can be effectively measured from the same scans in women within the first three years post-menopause.
- Further research is required to understand the longitudinal changes in these parameters with aging and estrogen therapy.
Objectives:
Cardiovascular disease and osteoporosis increase in women after menopause. While aortic calcification is associated with bone loss in women, a similar relationship for coronary arterial calcification (CAC), a risk factor for coronary artery disease in women, is less clear. This study was designed to examine the relationship between CAC and volumetric bone mineral density (vBMD) in women (n=137) who were within a median of 18 months past their last menses at screening for the Kronos Early Estrogen Prevention Study (KEEPS).
Methods:
CAC was measured using 64-slice computed tomography; vBMD was measured from these images using the Spine Cancer Assessment program. Concentrations of osteocalcin, bone alkaline phosphatase, tartrate-resident acid phosphatase-5b and osteopontin as bone matrix protein in serum and plasma were evaluated by ELISA.
Results:
CAC scores ranged from 0 to 327.6 Agatston Units (AU); 113 women had a score of 0 AU, 20 had a CAC score between 0 and 50 AU, and four had a CAC score>50 AU. Although not statistically significant, there was a trend toward decreasing central density of thoracic T9 with increasing CAC. On average, levels of markers of bone turnover were within the normal range but did not correlate with age or with months past menopause.
Conclusions:
Clinically significant CAC and spine vBMD are quantifiable from the same scans within the first 3 years of menopause. Additional work is needed to determine how these measurements change with increasing age or with estrogenic treatments.
Related Concept Videos
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Bone Disorders
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone Remodeling
Menopause
Coronary Artery Disease I: Introduction
Skeleton and Calcium Homeostasis

