By: Jacobo Kirsch, MD

Jacobo Kirsch, MD — Mon, 12 Oct 2009 13:12:09 +0000

I found interesting (and excellent) that the authors defined intermediate lesions on QCA when luminal narrowing was up to 70%, since most papers (until recently) have been setting a cut-of 50% narrowing on CTA.

By: Ronen Rubinshtein, MD

Ronen Rubinshtein, MD — Thu, 08 Oct 2009 23:46:29 +0000

This is an interesting study, reminding us of the limitations of conventional QCA vs IVUS.
While the correlation between IVUS and CTA was interesting, one should remember that intermediate lesions do frequently represent a diagnostic dilemma for CT readers. Moreover, we still don’t have validated and standard methods for MLA assessment by CTA (automatic or manual).
On the other hand, anyone performing IVUS knows that manual adjustment is frequently needed and variability (inter or intra) may or may not be different from CTA. This study adds an important piece of information to our understanding of coronary artery disease imaging.

Comments on: Accuracy of Computed Tomographic Angiography for Stenosis Quantification using Qantitative Coronary Angiography or Intravascular Ultrasound as the Gold Standard

By: Jacobo Kirsch, MD

By: Ronen Rubinshtein, MD