Evaluation of Patients with Previous Coronary Stent Implantation with 64-Section CT

Schuijf, Joanne D.; Pundziūtė, Gabija; Jukema, J. Wouter; Lamb, Hildo J.; Tuinenburg, Joan C.; Hoeven, Barend L. van der; Roos, Albert de; Reiber, J. H. C.; Wall, Ernst E. van der; Schalij, Martin J.; Bax, Jeroen J.

doi:10.1148/radiol.2452061199

Cited by 60 publications

(25 citation statements)

References 20 publications

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“…When imaging the coronary stents using 64-slice CT, a thin slice thickness (0.6-0.75 mm) with a low pitch (0.1-0.2) is most commonly preferred in the reported literature [8][9][10][11][12]. However, our results do not corroborate the traditional belief that thinner slice thickness produces largely depends on the type, diameter and material of the stent implanted.…”

Section: Discussioncontrasting

confidence: 76%

“…Recently, the emergence of 64-slice CT with increased spatial and temporal resolution led to significant improvement in the diagnostic value of MSCT for the evaluation of coronary in-stent restenosis [8][9][10][11][12], although this still needs further confirmation as to whether it could be used as a reliable alternative to invasive coronary angiography.…”

Section: Introductionmentioning

confidence: 99%

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Optimal scanning protocols of 64-slice CT angiography in coronary artery stents: An in vitro phantom study

Almutairi¹,

Sun²,

Ng³

et al. 2010

European Journal of Radiology

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Purpose: The purpose of the study was to investigate the optimal scanning protocol of 64-slice CT angiography for assessment of coronary artery stents based on a phantom study. Materials and Method:Coronary stents with a diameter of 2.5 mm was implanted in thin plastic tubes with an inner diameter of 3.0 mm to simulate a coronary artery. The tubes were filled with iodinated contrast medium diluted to 178 HU, closed at both ends and positioned in a plastic container filled with vegetable oil (-70-to -100 HU).A series of scans were performed with a 64-slice CT scanner with the following protocols: section thickness: 0.67 mm, 1.0 mm, 1.5 mm, 2.0 mm, pitch value: 0.2, 0.3, 0.5 and reconstruction interval of 50% overlap of the section thickness. 2D axial and multiplanar reformatted images were generated to assess the visibility of stent lumen, while virtual intravascular endoscopy (VIE) was reconstructed to evaluate the artery wall and stent surface. Results:Our results showed that a scanning protocol of 1.0 mm slice thickness with a pitch of 0.3 produced acceptable images with best demonstration of the intrastent lumen and stent surface with minimal image noise or artefacts. In contrast, submillimeter scans with 0.67 mm resulted in moderate artifacts which affected visualization of the coronary lumen, in addition to the increased noise. When the section thickness increased to 1.5 mm and 2.0 mm, visualization of the artery wall and stent surface was compromised, although the intrastent lumen was still visible. Conclusion:Our in vitro study suggested that a scanning protocol of 1. 0 mm section thickness with pitch of 0.3 is the optimal protocol for evaluation of coronary artery 3 stents as it allows generation of acceptable images with better visualization of stent lumen, stent surface and coronary artery wall.

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Section: Discussioncontrasting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Optimal scanning protocols of 64-slice CT angiography in coronary artery stents: An in vitro phantom study

Almutairi¹,

Sun²,

Ng³

et al. 2010

European Journal of Radiology

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“…The 64-slice MDCT was capable of assessing 88% of all stented arteries (49)(50)(51)(52)(53)(54)(55)(56). In the eight clinical studies examined, 64-slice MDCT had a sensitivity of 92%, a specificity of 92%, an NPV of 97%, a PPV of 75%, a positive likelihood ratio of 11.5, a negative likelihood ratio of 0.1 and a diagnostic accuracy of 92% for the assessment of coronary in-stent restenosis.…”

Section: Assessment Of In-stent Restenosis Using Mdctmentioning

confidence: 99%

Transitioning from 16-slice to 64-slice multidetector computed tomography for the assessment of coronary artery disease: Are we really making progress?

Khan

Rawal

Eisenberg

2009

Canadian Journal of Cardiology

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“…In coronary artery disease follow-up, coronary CT angiography (CCTA) is a non-invasive method which becomes very important and useful in the assessment of coronary arteries 1 . CCTA is highly accurate but image quality can be affected by several factors in some patients.…”

Section: Introductionmentioning

confidence: 99%

The comparison of high and standard definition computed tomography techniques regarding coronary artery imaging

et al. 2015

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Objectıve: The aim was to compare coronary high-definition CT (HDCT) with standard-definition CT (SDCT) angiography as to radiation dose, image quality and accuracy. Material and methods: 28 patients with history of coronary artery disease scanned by HDCT (Discovery CT750 HD) and SDCT (Somatom Definition AS). The scan modes were both axial prospective ECG-triggered. The vessel diameters and vessel attenuation values of totally 280 measurements from 140 coronary arteries were analyzed by two experienced radiologists. All data was analyzed by intraclass correlation test. Image quality graded by motion and stair step artifacts (grade 1, poor, to grade 4, excellent), accuracy of vessel inner and outer diameters were compared between the two CT units using the independent samples t-test and Mann-Whitney U test. Results: The intraclass correlation coefficient (ICC) of measured vessel attenuation values in SDCT between the two radiologists was exceedingly good. The ICC was higher in HDCT. The radiation dose of HDCT was higher than that of SDCT. The mean tube current was 180 (mA) in HDCT and 147(mA) in SDCT with the same tube voltage (kVp). There was no significant difference between image quality. Conclusion: HDCT has a higher radiation dose but has much more atenuation and the spatial resolution which improve measurement accuracy for imaging coronary arteries. Sci. 2015;15(3):925-30. doi: http:// dx.doi.org/10.4314/ahs.v15i3.29

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Evaluation of Patients with Previous Coronary Stent Implantation with 64-Section CT

Cited by 60 publications

References 20 publications

Optimal scanning protocols of 64-slice CT angiography in coronary artery stents: An in vitro phantom study

Optimal scanning protocols of 64-slice CT angiography in coronary artery stents: An in vitro phantom study

Transitioning from 16-slice to 64-slice multidetector computed tomography for the assessment of coronary artery disease: Are we really making progress?

The comparison of high and standard definition computed tomography techniques regarding coronary artery imaging

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