title: Differentiation of tumor from viable myocardium using cardiac tagging with MR imaging.
abstract: We report the application of myocardial tagging by MR to define tissue planes and differentiate contractile from noncontractile tissue in a neonate with congenital cardiac rhabdomyoma. Using custom-written pulse programming software, six 2 mm thick radiofrequency (RF) slice-selective presaturation pulses (tags) were used to label the chest wall and myocardium in a star pattern in diastole, approximately 60 ms before the R-wave gating trigger. This method successfully delineated the myocardium from noncontractile tumor, providing information that influenced clinical management. This RF tagging technique allowed us to confirm the exact intramyocardial location of a congenital cardiac tumor.
authors.affiliation: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Hospital, Baltimore, MD 21205.
authors.forename: S
authors.initials: S
authors.lastname: Bouton
authors.forename: A
authors.initials: A
authors.lastname: Yang
authors.forename: B W
authors.initials: BW
authors.lastname: McCrindle
authors.forename: L
authors.initials: L
authors.lastname: Kidd
authors.forename: E R
authors.initials: ER
authors.lastname: McVeigh
authors.forename: E A
authors.initials: EA
authors.lastname: Zerhouni
mesh_terms: D005260:Female; D006338:Heart Neoplasms / Q000151:congenital* / Q000473:pathology; D006801:Humans; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009206:Myocardium / Q000166:cytology*; D012207:Rhabdomyoma / Q000151:congenital* / Q000473:pathology