September 3, 2026Journal of the American College of Cardiology

Diagnostic Accuracy of Noninvasive Coronary Angiography Using 64-Slice Spiral Computed Tomography

Q: What are the key findings of this study?

64-slice MSCT coronary angiography demonstrated high diagnostic accuracy for significant stenoses compared to QCA, with 90% sensitivity and 95% specificity by patient.

Q: What is the clinical evidence from this study?

Study design: Observational. Population: Suspected coronary artery disease (n=70). Intervention: 64-slice multislice computed tomography (MSCT) coronary angiography vs. Quantitative coronary angiography (QCA). Primary outcome: Significant coronary stenoses (over 50% luminal narrowing) (Spearman correlation 0.76, p=< 0.0001).

Q: What question did this study set out to answer?

To assess the diagnostic accuracy of noninvasive 64-slice multislice computed tomography (MSCT) coronary angiography compared to invasive quantitative coronary angiography (QCA).

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Key result

64-slice MSCT achieves ~95% specificity for detecting significant coronary stenoses vs QCA.

Spearman correlation 0.76
P<0.0001
n=70

Why the study?

Does 64-slice MSCT coronary angiography accurately detect significant coronary stenoses compared to quantitative coronary angiography in patients undergoing elective invasive evaluation?

Population

70 consecutive patients undergoing elective invasive coronary angiography. Excluded for atrial fibrillation…

Comparison

64-slice multislice computed tomography coronary… vs Quantitative coronary angiography (QCA)

Design

Cross-sectional

Authors

GRGilbert RaffCardiac Imaging MGMichael J. GallagherOakland University WOWilliam W. O’NeillInterventional Cardiology

Discussion

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Implication

64-slice MSCT coronary angiography provides high diagnostic accuracy for detecting significant coronary stenoses compared to invasive quantitative coronary angiography, even in patients with high heart rates, obesity, or severe calcification.

Key Points

To assess the diagnostic accuracy of noninvasive 64-slice multislice computed tomography (MSCT) coronary angiography compared to invasive quantitative coronary angiography (QCA).
Evaluated 70 consecutive patients scheduled for elective invasive coronary angiography, excluding those with atrial fibrillation but retaining those with obesity, high heart rates, or severe calcification.
Analyzed all coronary segments quantitatively and qualitatively using 64-slice MSCT and compared findings to reference-standard QCA for identifying significant stenosis (>50% luminal narrowing).
Of 1,065 coronary segments, 88% (935) were evaluable, demonstrating a Spearman correlation of 0.76 (p < 0.0001) between MSCT and QCA and a mean difference in percent stenosis of 1.3 ± 14.2%.
Per-patient analysis (n = 70) for significant stenosis showed 90% sensitivity, 95% specificity, a 93% positive predictive value, and a 93% negative predictive value.
Per-segment analysis (n = 935) yielded 95% sensitivity, 86% specificity, a 66% positive predictive value, and a 98% negative predictive value.

Study Design

Type

Observational (n=70)

Structured PICO

Does 64-slice MSCT coronary angiography accurately detect significant coronary stenoses compared to quantitative coronary angiography in patients undergoing elective invasive evaluation?

Population

70 consecutive patients undergoing elective invasive coronary angiography (50% obese, 26% with high calcium scores), excluding those with atrial fibrillation.

Exposure

64-slice multislice computed tomography (MSCT) coronary angiography

Comparator

Quantitative coronary angiography (QCA)

Outcome

Diagnostic accuracy (specificity, sensitivity, positive and negative predictive values) for the presence of significant coronary stenoses (over 50% luminal narrowing)surrogate

Main Result

Effect estimate: Spearman correlation 0.76

p-value: p=< 0.0001

Cite This Study

Raff et al. (2005) conducted an observational in Suspected coronary artery disease (n=70). 64-slice multislice computed tomography (MSCT) coronary angiography vs. Quantitative coronary angiography (QCA) was evaluated on Significant coronary stenoses (over 50% luminal narrowing) (Spearman correlation 0.76, p=< 0.0001). 64-slice MSCT coronary angiography demonstrated high diagnostic accuracy for significant stenoses compared to QCA, with 90% sensitivity and 95% specificity by patient.

synapsesocial.com/papers/6a98e714143bfc0e651c2a44 https://doi.org/10.1016/j.jacc.2005.05.056

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Diagnostic Accuracy of Noninvasive Coronary Angiography Using 64-Slice Spiral Computed Tomography

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Diagnostic Accuracy of Noninvasive Coronary Angiography Using 64-Slice Spiral Computed Tomography

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Also Consider

Also Consider