Pediatric extracranial applications of MR angiography.
Extracranial magnetic resonance angiography (MRA) was performed in 20 children to evaluate for various arterial and venous conditions. Time-of-flight and phase-contrast angiograms were constructed using a maximal-intensity-projection algorithm. The accuracy of MRA was comparable to Doppler ultrasound (n = 12) and conventional angiography (n = 3). MRA could provide an excellent mapping of patent (including collaterals) versus thrombosed vessels at sites not evaluated or inaccessible by sonography. Limitations included assessment of small and/or tortuous vessels, severely stenotic lesions, and very slow flow.
Kao
S C
SC
Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City 52242, USA.
Ehrhardt
J C
JC
Sato
Y
Y
D'Alessandro
M P
MP
Smith
W L
WL
D000293:Adolescent; D000328:Adult; D001158:Arteries / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D019786:Gadolinium DTPA / Q000008:administration & dosage; D006801:Humans; D007223:Infant; D007275:Injections, Intravenous; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D016491:Peripheral Vascular Diseases / Q000175:diagnosis*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012886:Skull; D014680:Veins / Q000473:pathology
D003287:Contrast Media; D019786:Gadolinium DTPA