Improvement of Image Quality with ß-Blocker Premedication on ECG-Gated 16-MDCT Coronary Angiography

Shim, Sung Shine; Kim, Yookyung; Lim, Soo Mee

doi:10.2214/ajr.184.2.01840649

Cited by 99 publications

(60 citation statements)

References 9 publications

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“…In addition, 4 segments were either underestimated or overestimated due to blurring and double contouring of a vessel with a heart rate greater than 75 bpm. A lower heart rate (< 65 bpm) and the choice of a proper reconstruction window permitted excellent visualization of both the coronary artery lumen and wall (18). Small vessel size was the main reason for exclusion of stenosis assessment in this study.…”

Section: Discussionmentioning

confidence: 89%

The Diagnostic Accuracy of the 64-slice Multi-detector CT Coronary Angiography for the Assessment of Coronary Artery Stenosis in Symptomatic Patients

Nam

et al. 2008

J Korean Radiol Soc

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Purpose:We evaluated the diagnostic accuracy of a 64-slice multi-detector CT (MD-CT) coronary angiography against a conventional coronary angiography (CCA) for the detection of significant stenosis ( 50% lumen diameter narrowing). Materials and Methods: Sixty-four patients underwent a MDCT and a subsequent CCA to evaluate the presence of atypical chest pain or suspected coronary artery disease (CAD). A MDCT angiography was performed using a 64-slice MDCT-scanner (Sensation 64, slice collimation 32 0.6 mm). The coronary artery segments were classified according to a 15-segment model. The sensitivity, specificity, and diagnostic accuracy of the 64-slice MDCT for the detection or exclusion of significant CAD were calculated on a per-segment and per-patient basis. Results: Fifty-nine of the 64 (92%) coronary CT angiograms were of diagnostic image quality with 93.5% (809 of 865) of the coronary segments assessable by CT angiography. One-hundred two (12.6%) segments showed significant stenosis by CCA. Stenosis of 50% or greater was detected by sensitivity, specificity, accuracy, positive predictive valve, and negative predictive value on a per segment basis (89%, 99%, 97%, 90%, and 98%, respectively) and a per-patient basis (96%, 69%, 90%, 92%, and 82%, respectively). Conclusion:The 64-slice MDCT coronary angiography demonstrated a high diagnostic accuracy for both the per-segment and per-patient analyses for this symptomatic patient group.

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Section: Discussionmentioning

confidence: 89%

The Diagnostic Accuracy of the 64-slice Multi-detector CT Coronary Angiography for the Assessment of Coronary Artery Stenosis in Symptomatic Patients

Nam

et al. 2008

J Korean Radiol Soc

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“…Lower HR thus decreases the need for image reconstruction during other phases of the cardiac cycle, consequently improving image quality and decreasing radiation dose (Fig 1). Due to their close proximity to the right and left atria respectively, the right coronary artery 15 and left circumflex artery (LCx) are more prone to motion artifacts 16 .…”

Section: Factors Affecting Image Qualitymentioning

confidence: 99%

Lowering of Heart Rate before Computed Tomographic Coronary Angiography: Improvement in Image Quality and Role of Ivabradine

Javed¹,

Hamid²,

Khan³

2015

jcvd

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Heart rate during coronary computed tomographic angiography (coronary CTA) has a direct correlation with image quality and detection of coronary artery disease. Beta blocking agents are the most commonly used drugs to lower the heart rate, but their use is limited due to adverse effects and contraindications. Ivabradine (IVA) is a novel drug that selectively acts on cardiac pacemaker cells and lowers heart rate. This brief review article emphasizes the importance of slow heart rate for coronary CTA image quality and pre-treatment with IVA as a negative chronotropic agent. We compared the role of other drugs used for this purpose. Keywords -Ivabradine, Coronary CT angiography, Hear rateCite this article as: Javed AA, Hamid MS and Khan MH. Lowering of heart rate before computed tomographic coronary angiography: improvement in image quality and role of ivabradine. JCvD 2015;3(2): 325-329.

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“…Despite, however, the best temporal resolution of current CT equipment, the heart rate (HR) of the patient during image acquisition of ATCCor still needs to be around 60 beats per minute (< 65 bpm) for the optimal quality of picture and/ or for the radiation dose to be the lowest possible 12,13 . In addition, the RR interval should also be regular for optimal image quality, and irregular heartbeats, such as in atrial fibrillation and extrasystole, can be extremely damaging to image acquisition in CTACor 14,15 .…”

Section: Introductionmentioning

confidence: 99%

Diltiazem como alternativa ao betabloqueador na angiotomografia de artérias coronárias

Rochitte¹,

Azevedo

Shiozaki

et al. 2012

Arq. Bras. Cardiol.

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Improvement of Image Quality with ß-Blocker Premedication on ECG-Gated 16-MDCT Coronary Angiography

Abstract: Reduction of heart rates with beta-blocker premedication improves the image quality of CT coronary angiography, especially in terms of the visualization of the right coronary artery.

Cited by 99 publications

References 9 publications

The Diagnostic Accuracy of the 64-slice Multi-detector CT Coronary Angiography for the Assessment of Coronary Artery Stenosis in Symptomatic Patients

The Diagnostic Accuracy of the 64-slice Multi-detector CT Coronary Angiography for the Assessment of Coronary Artery Stenosis in Symptomatic Patients

Lowering of Heart Rate before Computed Tomographic Coronary Angiography: Improvement in Image Quality and Role of Ivabradine

Diltiazem como alternativa ao betabloqueador na angiotomografia de artérias coronárias

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