Rapid three-dimensional MR imaging method for tracking a bolus of contrast agent through the brain

P van Gelderen; C Grandin; J R Petrella; C T Moonen

doi:10.1148/radiology.216.2.r00au27603

Rapid three-dimensional MR imaging method for tracking a bolus of contrast agent through the brain

Radiology. 2000 Aug;216(2):603-8. doi: 10.1148/radiology.216.2.r00au27603.

Authors

P van Gelderen¹, C Grandin, J R Petrella, C T Moonen

Affiliation

¹ National Institutes of Health Laboratory of Diagnostic Radiology Research, Office of the Director and In Vivo NMR Research Center, National Institute of Neurological Disorders and Stroke, Bethesda, MD 20892, USA. gelderen@helix.nih.gov

PMID: 10924593
DOI: 10.1148/radiology.216.2.r00au27603

Abstract

A gradient-echo three-dimensional magnetic resonance imaging technique (principles of echo shifting with a train of observations, or PRESTO) is presented for use in tracking a bolus of paramagnetic contrast agent through the brain. The approach combines a segmented echo-planar type of acquisition with echo shifting, which leads to echo times that are longer than the repetition time. Unlike echo-planar imaging, the method maintains image resolution despite drastic T2* changes and frequency shifts.

MeSH terms

Adult
Brain / anatomy & histology*
Cerebrovascular Circulation / physiology
Contrast Media* / administration & dosage
Echo-Planar Imaging / methods*
Female
Fourier Analysis
Gadolinium DTPA* / administration & dosage
Humans
Image Enhancement / methods
Image Processing, Computer-Assisted / methods
Injections, Intravenous
Magnetic Resonance Imaging / methods*
Male
Middle Aged
Reproducibility of Results
Signal Processing, Computer-Assisted
Time Factors

Substances

Contrast Media
Gadolinium DTPA