Comparison of coronary diagnostic techniques

	Angioscopy	Coronary arteriography	Intravascular ultrasound	Optical coherence tomography
Color tone	Color	Black and white	Black and white	False color (eg, sepia) or black and white
Picture expression	3-dimension	2-dimension	2-dimension	2-dimension and 3-dimension
High resolution	++	+	+	+++
Quantification	-	++	++	++
General picture	-	-	++	++
Tissue characterization
Intraluminal	++	+	+	++
Intramural	-	-	++	+
Thrombus	++	+	-	+++
Calcification	-	+	++	+++
Plaque characterization	++	+	++	++

++: excellent; +: good; -: poor.

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