Intraindividual Comparison of Ultrahigh-Spatial-Resolution Photon-Counting Detector CT and Energy-Integrating Detector CT for Coronary Stenosis Measurement

Circulation Cardiovascular Imaging, Journal Year: 2024, Volume and Issue: 17(10)

Published: Sept. 27, 2024

BACKGROUND: A recent simulation study proposed that stenosis measurements on coronary computed tomography (CT) angiography are influenced by the improved spatial resolution of photon-counting detector (PCD)-CT. The aim current was to evaluate impact ultrahigh-spatial-resolution (UHR) and Coronary Artery Disease Reporting Data System (CAD-RADS) reclassification rates in patients undergoing CT both PCD-CT energy-integrating (EID)-CT compare against quantitative angiography. METHODS: Patients with calcification EID-CT (collimation, 192×0.6 mm) were prospectively enrolled for a research UHR 120×0.2 within 30 days (between April 1, 2023 January 31, 2024). acquired same or lower dose index equivalent contrast media volume as EID-CT. Percentage diameter (PDS) calcified, partially noncalcified lesions compared between scanners. Patient-level CAD-RADS evaluated. accuracy PDS validated who underwent invasive RESULTS: In total, 278 plaques quantified 49 (calcified, 202; 51; noncalcified, 25). PCD-CT-based values than calcified (45.1±20.7 versus 54.6±19.2%; P <0.001) (44.3±19.6 54.9±20.0%; <0.001), without significant differences (39.1±15.2 39.0±16.0%; =0.98). reduction degrees led 49.0% (24/49) rate PCD-CT. subset 12 56 lesions, UHR–based showed higher agreement (mean difference, 7.3%; limits agreement, −10.7%/25.2%) 17.4%; −6.9%/41.7%). CONCLUSIONS: Compared conventional EID-CT, results more accurate components leads substantial patients.

Language: Английский

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Quantification of Coronary Artery Stenosis in Very-High-Risk Patients Using Ultra-High Resolution Spectral Photon-Counting CT

Investigative Radiology, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 20, 2024

Development of spectral photon-counting computed tomography (SPCCT) for ultra-high-resolution coronary CT angiography (CCTA) has the potential to accurately evaluate arteries very-high-risk patients. The aim this study was compare diagnostic performances SPCCT against conventional quantifying stenosis in patients, with invasive (ICA) as reference method.

Language: Английский

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Cost-effectiveness of ultrahigh-resolution photon-counting detector coronary CT angiography for the evaluation of stable chest pain

Journal of cardiovascular computed tomography, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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The Impact of Coronary CT Angiography Image Quality on Artificial Intelligence Technology's Ability To Automatically Identify Coronary Artery Lesions And Stenosis

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 26, 2024

Background To explore the impact of image quality on ability artificial intelligence (AI) to identify coronary artery lesions and detect degree stenosis in CT angiography (CCTA), using invasive (ICA) as reference standard. Methods 156 patients suspected heart disease were enrolled from June 2020 2021, including 92 males 64 females, with an average age 66.1 ± 9.4 years. Left anterior descending (LAD), right (RCA), left circumflex (LCX) divided into non-stenosis, mild stenosis, moderate severe occlusion according ICA gold With categorical variable, each vessel was evaluated investigate effect performance AI technology automatically detecting CCTA. Results Compared traditional manual postprocessing (13.9 3.6min per case), interpretation times 5.4 1.5min case significantly reduced; there no significant difference detection plaques between (P = 0.213). The consistency assessing subjects medium consistent that ICA, P value < 0.001. accuracy human + evaluating LAD, RCA higher than 0.001), OR values 5.258 (2.451,11.376) 6.552 (2.989,14.362) for medium, 8.200 (2.747,24.478) 14.333 (3.886,52.874) high, respectively; LCX 0.05), 2.179 (1.063,4.468) 3.266 (1.198,8.903) high respectively. Conclusion CCTA processing, AI-assisted diagnosis has a shorter processing time, plaque evaluate under supervision physician, thereby improving work efficiency.

Language: Английский

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Technical Note: An optimized protocol for standard unenhanced whole-body post-mortem Photon Counting CT imaging

Forensic Science International, Journal Year: 2024, Volume and Issue: 367, P. 112317 - 112317

Published: Nov. 29, 2024

Language: Английский

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