Impact of SSF on Diagnostic Performance of Coronary Computed Tomography Angiography Within 1 Heart Beat in Patients With High Heart Rate Using a 256-Row Detector Computed Tomography

Liang, Jiantao; Wang, Hui; Xu, Lei; Dong, Li; Fan, Zhanming; Wang, Rui; Sun, Zhonghua

doi:10.1097/rct.0000000000000641

Cited by 31 publications

(23 citation statements)

References 22 publications

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“…Therefore, the mean effective radiation dose of 0.8 mSv in this study was lower than those of previous studies that evaluated the effect of MCA using 64-slice CT (451819). Liang et al (6) evaluated the effect of MCA on image quality and diagnostic accuracy in patients with high HRs using 256-detector row multi-detector CT. However, the effect of HR on motion correction was not analyzed.…”

Section: Discussionmentioning

confidence: 99%

“…However, most studies were performed with a 64-slice single-source dual-energy CT scanner. Liang et al (6) demonstrated that the use of MCA on a 256-detector row multi-detector CT scanner could significantly improve image quality and diagnostic performance in patients with HR ≥ 75 beats per minute (bpm). However, the effect of HR on motion correction was not analyzed in their study.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Heart Rate and Innovative Motion-Correction Algorithm on Coronary Artery Image Quality and Measurement Accuracy Using 256-Detector Row Computed Tomography Scanner: Phantom Study

et al. 2019

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ObjectiveTo investigate the efficacy of motion-correction algorithm (MCA) in improving coronary artery image quality and measurement accuracy using an anthropomorphic dynamic heart phantom and 256-detector row computed tomography (CT) scanner.Materials and MethodsAn anthropomorphic dynamic heart phantom was scanned under a static condition and under heart rate (HR) simulation of 50–120 beats per minute (bpm), and the obtained images were reconstructed using conventional algorithm (CA) and MCA. We compared the subjective image quality of coronary arteries using a four-point scale (1, excellent; 2, good; 3, fair; 4, poor) and measurement accuracy using measurement errors of the minimal luminal diameter (MLD) and minimal luminal area (MLA).ResultsCompared with CA, MCA significantly improved the subjective image quality at HRs of 110 bpm (1.3 ± 0.3 vs. 1.9 ± 0.8, p = 0.003) and 120 bpm (1.7 ± 0.7 vs. 2.3 ± 0.6, p = 0.006). The measurement error of MLD significantly decreased on using MCA at 110 bpm (11.7 ± 5.9% vs. 18.4 ± 9.4%, p = 0.013) and 120 bpm (10.0 ± 7.3% vs. 25.0 ± 16.5%, p = 0.013). The measurement error of the MLA was also reduced using MCA at 110 bpm (19.2 ± 28.1% vs. 26.4 ± 21.6%, p = 0.028) and 120 bpm (17.9 ± 17.7% vs. 34.8 ± 19.6%, p = 0.018).ConclusionMotion-correction algorithm can improve the coronary artery image quality and measurement accuracy at a high HR using an anthropomorphic dynamic heart phantom and 256-detector row CT scanner.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Heart Rate and Innovative Motion-Correction Algorithm on Coronary Artery Image Quality and Measurement Accuracy Using 256-Detector Row Computed Tomography Scanner: Phantom Study

et al. 2019

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“…The motion velocity and path of coronary arteries from adjacent cardiac phases are characterized, and the information is used to calculate an optimal estimation of the vessel lumen at the target phase by the snapshot freeze (SSF) reconstruction technique (GE Healthcare) (29). Several previous studies reported that the SSF technique improves diagnostic accuracy using a 64-row detector CT scanner (29)(30)(31), and this technique is currently available on wide-detector CT scanners (32)(33)(34).…”

Section: Effect Of Heart Rate and Image Qualitymentioning

confidence: 99%

“…In the 16-cm wide-detector CT scanner of GE Healthcare (Revolution CT), using the one-beat auto-gating technique to identify the ideal time within one cardiac cycle at any heart rate in combination with the SSF motion correction kjronline.org technique can achieve coronary artery images with diagnostic quality even in patients with a high heart rate or high heart rate variability (32)(33)(34).…”

Section: Effect Of Heart Rate and Image Qualitymentioning

confidence: 99%

Clinical Applications of Wide-Detector CT Scanners for Cardiothoracic Imaging: An Update

Kang

2019

Korean J Radiol

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Technical developments in multidetector computed tomography (CT) have increased the number of detector rows on the z-axis, and 16-cm wide-area-coverage CT scanners have enabled volumetric scanning of the entire heart. Beyond coronary arterial imaging, such innovations offer several advantages during clinical imaging in the cardiothoracic area. The wide-detector CT scanner markedly reduces the image acquisition time to less than 1 second for coronary CT angiography, thereby decreasing the volume of contrast material and radiation dose required for the examination. It also eliminates stair-step artifacts, allowing robust improvements in myocardial function and perfusion imaging. Additionally, new imaging techniques for the cardiothoracic area, including subtraction imaging and free-breathing scans, have been developed and further improved by using the wide-detector CT scanner. This article investigates the technical developments in wide-detector CT scanners, summarizes their clinical applications in the cardiothoracic area, and provides a review of the recent literature.

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“…Coronary computed tomography angiography (CCTA) is a widely used less-invasive modality in the diagnostic assessment of coronary artery disease. Due to technological improvements in CT scanning techniques, CCTA has demonstrated high diagnostic accuracy in determining coronary stenosis and serves as a reliable gatekeeper for excluding obstructive coronary stenosis, even in patients with high heart rates (1)(2)(3)(4)(5)(6)(7). Coronary stenting is a commonly performed less invasive procedure following percutaneous coronary intervention for the treatment of patients with significant coronary artery stenosis, while stent patency and presence of in-stent restenosis is increasingly evaluated with CCTA, according to several systematic reviews and meta-analyses (8)(9)(10)(11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

Personalized 3D printed coronary models in coronary stenting

Sun

Jansen

2019

Quant. Imaging Med. Surg.

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Background: 3D printing has shown great promise in cardiovascular disease, with reports mainly focusing on pre-surgical planning and medical education. Research on utilization of 3D printed models in simulating coronary stenting has not been reported. In this study, we presented our experience of placing coronary stents into personalized 3D printed coronary models with the aim of determining stent lumen visibility with images reconstructed with different postprocessing views and algorithms.Methods: A total of six coronary stents with diameter ranging from 2.5 to 4.0 mm were placed into 3 patient-specific 3D printed coronary models for simulation of coronary stenting. The 3D printed models were placed in a plastic container and scanned on a 192-slice third generation dual-source CT scanner with images reconstructed with soft (Bv36) and sharp (Bv59) kernel algorithms. Thick and thin slab maximumintensity projection (MIP) images were also generated from the original CT data for comparison of stent lumen visibility. Stent lumen diameter was measured on 2D axial and MIP images, while stent diameter was measured on 3D volume rendering images. 3D virtual intravascular endoscopy (VIE) images were generated to provide intraluminal views of the coronary wall and stent appearances.Results: All of these stents were successfully placed into the right and left coronary arteries but 2 of them did not obtain wall apposition along the complete length. The stent lumen visibility ranged from 54 to 97%, depending on the stent location in the coronary arteries. The mean stent lumen diameters measured on 2D axial, thin and thick slab MIP images were found to be significantly smaller than the actual size (P<0.01). Thick slab MIP images resulted in measured stent lumen diameters smaller than those from thin slab MIP images, with significant differences noticed in most of the measurements (4 out of 6 stents) (P<0.05), and no significant differences in the remaining 2 stents (P=0.19-0.38). In contrast, 3D volume rendering images allowed for more accurate measurements with measured stent diameters close to the actual dimensions in most of these coronary stents, except for the stent placed at the right coronary artery in one of the models due to insufficient expansion of the stent. Images reconstructed with sharp kernel Bv59 significantly improved stent lumen visibility when compared to the smooth Bv36 kernel (P=0.01). 3D VIE was successfully generated in all of the datasets with clear visualization of intraluminal views of the stents in relation to the coronary wall.Conclusions: This preliminary report shows the feasibility of using 3D printed coronary artery models in coronary stenting for investigation of optimal coronary CT angiography protocols. Future studies should focus on placement of more stents with a range of stent diameters in the quest to reduce the need for invasive angiography for surveillance.

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Impact of SSF on Diagnostic Performance of Coronary Computed Tomography Angiography Within 1 Heart Beat in Patients With High Heart Rate Using a 256-Row Detector Computed Tomography

Abstract: Coronary computed tomography angiography can be performed in patients with high HR within 1 heart beat yielding low radiation dose. The use of SSF technique reconstruction for 1 heart beat CCTA achieves significant improvements in image quality and diagnostic value.

Cited by 31 publications

References 22 publications

Influence of Heart Rate and Innovative Motion-Correction Algorithm on Coronary Artery Image Quality and Measurement Accuracy Using 256-Detector Row Computed Tomography Scanner: Phantom Study

Influence of Heart Rate and Innovative Motion-Correction Algorithm on Coronary Artery Image Quality and Measurement Accuracy Using 256-Detector Row Computed Tomography Scanner: Phantom Study

Clinical Applications of Wide-Detector CT Scanners for Cardiothoracic Imaging: An Update

Personalized 3D printed coronary models in coronary stenting

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