Incidental magnetization transfer contrast in standard multislice imaging.

Abstract:

:Radio frequency magnetic fields from 5 to 100 kHz off resonance reduce longitudinal magnetization of water in some tissues without affecting the magnetization of simple solutions (Wolff, S.D.; Balaban, R.S. Magnetization transfer contrast (MTC) and tissue water proton relaxation in vivo. Magn. Reson. Med. 10:135-144; 1989). We demonstrate that off resonant fields used in day to day multislice imaging have a significant effect. Extra slices reduced brain (gray and white matter) and muscle intensities 10%-20% relative to fat, water, and paramagnetic solutions, a larger effect than produced by slice overlap. Implications for image contrast and quantitation are discussed.

journal_name

Magn Reson Imaging

authors

Dixon WT,Engels H,Castillo M,Sardashti M

doi

10.1016/0730-725x(90)90050-c

subject

Has Abstract

pub_date

1990-01-01 00:00:00

pages

417-22

issue

4

eissn

0730-725X

issn

1873-5894

pii

0730-725X(90)90050-C

journal_volume

8

pub_type

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