Ms. Olivia Sorci Profile

Olivia Sorci

at Univ of Pennsylvania

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Proceedings Article | 19 March 2019 Paper

Using FDG and NaF PET/CT imaging to investigate the relationship between inflammation and microcalcification in the aorta

Thomas Auslander, Sofia Miguez, Alexandra Batzdorf, Olivia Sorci, Marie Lim, Brandon Jones, Michael Mayer, Poul Høilund-Carlsen, Abass Alavi, Chamith Rajapakse

Proceedings Volume 10953, 109531N (2019) https://doi.org/10.1117/12.2512744

KEYWORDS: Chemical vapor deposition, Aorta, Inflammation, Image segmentation, Computed tomography, Image analysis, Positron emission tomography, Calcium, Analytical research, Tissues

Read Abstract +

Cardiovascular disease (CVD) has been the leading global cause of death for the last 15 years. In 2016, CVD, and resulting sudden and severe medical emergencies, accounted for 15.2 million deaths globally (1). Early CVD pathophysiology is characterized by both inflammation and microcalcification of vasculature. Currently, detection and observation of the disease at this stage are difficult. Additionally, the cause-effect relationships among symptoms remain unknown (2, 3, 4, 5). Nevertheless, inflammation and calcification have independently been connected to CVD risk (1, 6). Moreover, studies have shown that calcification specifically in the aorta is associated with an increased risk of death from CVD (7). For these reasons, this study aims to establish a method to examine and quantify the relationship between inflammation and plaque microcalcification in the descending thoracic aorta, and develop a strategy to better detect these CVD risk factors. PET/CT imaging with 2-deoxy-2-[18F]fluoro-D-glucose (FDG) and 18-Sodium Fluoride (NaF) radiotracers were used to detect plaque inflammation and vascular microcalcification, respectively. The thoracic aorta was then manually segmented on PMOD, and inflammation/microcalcification in each participant’s aorta were quantified by calculating the mean standard uptake value (SUV) for both radiotracers. The relationship between inflammation and microcalcification, as well as how both contribute to CVD, were analyzed by comparing SUVs for control participants and patients. It was found that participants with CVD have significantly more inflammation and microcalcification in this area than that among controls and that aortic inflammation and microcalcification are positively correlated with each other and with age.

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