Monday, November 30 | 11:40 a.m.-11:50 a.m. | SSC02-08 | Room S503AB
Dense stent materials and the resulting blooming artifacts on CT inhibit assessment of in-stent lumens. The doses required for stent assessment are high, and reducing the dose increases the blooming artifacts."We investigated coronary stent diagnosis performance on high-definition CT and compared it with an ordinary 64-row MDCT using a pulsating cardiac phantom with different heartbeats," using four different stent models, said presenter Yun Shen, an employee of GE Healthcare of Chalfont St. Giles, U.K.
While all stent sizes were underestimated on both scanners, measurements on the standard 64-detector-row CT were all statistically significantly smaller (p < 0.01) than the results from HDCT.
"HDCT with high spatial resolution showed significant improvement in quantitative measurement accuracy of in-stent lumen sizes," Shen told AuntMinnie.com. "This is important to CT coronary stent assessment, and it affects the subsequent management of the patient."
![Images show the pectoralis muscles of a healthy male individual who never smoked (age, 66 years; height, 178 cm; body mass index [BMI, calculated as weight in kilograms divided by height in meters squared], 28.4; number of cigarette pack-years, 0; forced expiratory volume in 1 second [FEV1], 97.6% predicted; FEV1: forced vital capacity [FVC] ratio, 0.71; pectoralis muscle area [PMA], 59.4 cm2; pectoralis muscle volume [PMV], 764 cm3) and a male individual with a smoking history and chronic obstructive pulmonary disorder (COPD) (age, 66 years; height, 178 cm; BMI, 27.5; number of cigarette pack-years, 43.2, FEV1, 48% predicted; FEV1:FVC, 0.56; PMA, 35 cm2; PMV, 480.8 cm3) from the Canadian Cohort Obstructive Lung Disease (i.e., CanCOLD) study. The CT image is shown in the axial plane. The PMV is automatically extracted using the developed deep learning model and overlayed onto the lungs for visual clarity.](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/03/genkin.25LqljVF0y.jpg?auto=format%2Ccompress&crop=focalpoint&dpr=2&fit=crop&h=167&q=70&w=250)
