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PCCT for coronary assessment and functional imaging in Takotsubo cardiomyopathy
@Bálint Szilveszter, Borbála Vattay, Péter Csongor, @Milan Vecsey-Nagy Városmajor Heart and Vascular Centre, Cardiac CT Working Group, Budapest, Hungary September 29, 2026 https://siemens-healthineers.bynder.com/asset/a85e1bdc-bf2b-4a4d-94a0-dc890f0a7651/CT-NAEOTOM-CONNECT-CaseReport-Takutsobu-2-VIDEO-2026.mp4…
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PCCT for myocardial tissue characterization in acute myocarditis: comparison with CMR
Ferenc Imre Suhai, Barbara Sipos, Milán Vecsey-Nagy, Bálint Szilveszter Városmajor Heart and Vascular Centre, Cardiac CT Working Group, Budapest, Hungary September 29, 2026 https://siemens-healthineers.bynder.com/asset/2a67d11b-415e-4e25-a74a-42d82ff7a4d5/CT-NAEOTOM-CONNECT-CaseReport-BalintMyocard-1-VIDEO-2026.mp4…
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(2026) Hyska | Time-resolved PCCT estimates post-TAVI pressure gradients
In 71 post-TAVI PCCT examinations from 63 patients, time-resolved cardiac PCCT enabled calculation of prosthetic-valve hemodynamics from left-ventricular volumetry and direct valve-orifice planimetry. CT-derived mean and maximum transvalvular gradients correlated strongly with echocardiography (ρ = 0.85 for both), while…
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(2023) van der Bie | PCCT for TAVR planning and follow-up
This early case series illustrates how UHR PCCT can improve structural heart imaging before and after TAVR, particularly through sharper depiction of the aortic valve, annulus, coronary arteries, prosthetic valve frames, and vascular access routes. UHR acquisition allows 0.2-mm sections, compared with 0.4 mm in the regular…
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(2023) Turrion Gomollon | VNI PCCT may replace true noncontrast after EVAR
In 110 patients undergoing EVAR surveillance, including 41 endoleaks, the authors compared conventional triphasic PCCT (true noncontrast + arterial + venous) with a biphasic strategy in which virtual noniodine (VNI) images reconstructed from the venous phase replaced the true noncontrast acquisition. Endoleak detection was…
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(2024) Qin | Improvement of coronary stent visualization using UHR PCCT
In 69 patients with 131 coronary stents, UHR PCCT with 0.2-mm slices significantly improved in-stent lumen visualization and reduced blooming artifacts compared with standard-resolution 0.6-mm reconstruction. Among the evaluated reconstruction kernels, Bv72 provided the best overall performance, improving visualization of…
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(2026) Kabakus | Is nitroglycerin still nevessary for CCTA in the era of PCCT?
In 124 patients with CCTA and invasive coronary angiography (ICA) within 30 days, diagnostic performance of PCCT CCTA was similar with and without sublingual nitroglycerin. Per-patient sensitivity was 90.3% vs 90.9%, and NPV was 86.4% vs 88.9%, with no significant differences between groups. The non-nitroglycerin group was…
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(2023) Vattay | VMI energy substantially alters PCCT coronary plaque quantification
In 51 patients with 51 coronary plaques, PCCT VMI energy had a substantial effect on measured plaque attenuation and consequently on quantitative plaque composition when fixed HU thresholds were used. Mean plaque attenuation fell progressively from 723 ± 501 HU at 40 keV to 120 ± 112 HU at 180 keV, while 70-keV VMI most…
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(2026) Tateishi | PCCT depicts a ventricular tachycardia substrate
The case report hase been published by: Tateishi, R, Nishimura, T, Tao, S. et al. Photon-Counting Detector Computed Tomography Depicts a Ventricular Tachycardia Substrate: Periaortic Septal Intramural Late Iodine Enhancement. J Am Coll Cardiol Case Rep. 2026 Apr, 31 (15) . https://doi.org/10.1016/j.jaccas.2026.107250 Check…
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(2024) Hagar | UHR PCCT accurately evaluates coronary stent patency
In 18 patients with 44 coronary stents, ultra-high-resolution (UHR) PCCT angiography achieved high diagnostic accuracy for detecting ≥50% in-stent stenosis compared with invasive coronary angiography (ICA). Both readers identified all 5 stenotic stents, yielding 100% sensitivity. Specificity and overall accuracy were 92.3%…
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(2024) Haag | PURE Calcium PCCT may replace true noncontrast calcium scoring
In 170 patients, coronary artery calcium scores derived from PCCT PureCalcium virtual noncontrast images showed excellent correlation with true noncontrast (TNC) calcium scoring (ICC 0.98). Median Agatston scores were not significantly different: 4.8 vs 2.7, respectively (p = 0.99). High correlation did not translate into…
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(2024) Gnasso | Optimized PCCT reconstruction improves myocardial ECV accuracy
In 27 patients undergoing same-day PCCT and cardiac MRI, myocardial extracellular volume (ECV) measurements remained robust across a wide range of reconstruction settings, but reconstruction choices meaningfully affected agreement with MRI. The greatest improvement came from combining thin slices with low-keV VMI, rather…
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(2024) Fink | Safety-net PCCT VNC improves subtle coronary calcium detection
Standard PCCT virtual noncontrast (VNC) calcium scoring performs well for larger and denser plaques but can miss subtle disease. Large/medium and high/medium-density plaques showed strong agreement with true noncontrast (TNC) scoring (r > 0.9; ICC ≥ 0.90), whereas low-density plaques showed poor agreement and small plaques…
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(2022) Emrich | CCTA-based calcium scoring with virtual noniodine PCCT
Evaluated whether coronary artery calcium scoring (CACS) can be derived directly from contrast-enhanced CCTA using the PCCT-specific PureCalcium virtual noniodine reconstruction, potentially eliminating the separate true noncontrast (TNC) calcium-score acquisition. Tested on a first-generation dual-source photon-counting…
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(2023) Aquino | PCCT ECV mapping correlates strongly with cardiac MRI
In this prospective same-day comparison of 29 patients, myocardial extracellular volume (ECV) measured with PCCT showed strong agreement with cardiac MRI, supporting spectral PCCT as a quantitative tool for myocardial tissue characterization. Dual-energy PCCT achieved correlations of r = 0.91 for global ECV and r = 0.82…
