Semi-automatic carotid intraplaque hemorrhage detection and quantification on Magnetization-Prepared Rapid Acquisition Gradient-Echo (MP-RAGE) with optimized threshold selection

Table 1 Previous studies that identified IPH (or high signal intensity) using MP-RAGE

Study	No of subjects	Histology	Threshold	Reference tissue	Field Intensity (T)	Coil	TR/TI (ms)	Comments
Yamada et al. [9]	222	No	2.0	Adjacent muscle	1.5	Standard neck array and spine array coil	1500/660	Define high signal intensity regions
Hishikawa et al. [8]	35	Yes	2.0	Adjacent muscle	1.5	Standard neck array and spine array coil	1500/660	Define high signal intensity regions
Altaf et al. [3]	64	No	1.5	SCM	1.5	Receive-only quadrature neck array cervical spine coil	1462/741^a	Define regions for IPH
Mendes et al. [10]	35	No	1.5	SCM	3	Custom designed 4 or 16 element phased array surface coils	667/370	Define regions for potential IPH
Ota et al. [7]	20	Yes	Subjective	Normal artery wall or adjacent muscle	3	Four-channel phased-array surface coil	568/304	Manually define regions for IPH

IPH intraplaque hemorrhage, MP-RAGE magnetization-prepared rapid acquisition gradient-echo, SCM sternocleidomastoid muscle
^aCalculated based on imaging parameters reported in the paper

ISSN: 1532-429X