Changes of soft-tissue water examined with magnetic resonance and electrical impedance tomography: an in vivo experiment.

Abstract:

:The purpose of this study was the examination of short-term changes in soft-tissue water under in vivo conditions. In 12 healthy volunteers the water distribution of a selected slice of the lower limb was examined after change of position and rapid infusion of 0.9% saline solution. Two methods were used for data acquisition: magnetic resonance imaging (MRI) (Repetition Time (TR) = 1600 msec, Inversion Time (TI) = 300 msec, Echo Time (TE) = 22 msec) and electrical impedance tomography (EIT). In orthostatic equilibrium all 12 volunteers demonstrated changes of MR signal intensity and resistivity in the range of 12% and 7%, respectively. After infusion, mean changes of signal intensity and resistivity were 7% and 4%, respectively. The overall correlation of MRI and EIT was -0.96 (p < 0.001). Results indicate that inversion recovery sequences are a sensitive method of detecting in vivo changes of water distribution in selected areas of the body.

journal_name

Angiology

journal_title

Angiology

authors

Sievers KW,Gauger J,Bauermann T,Löhr E

doi

10.1177/000331979304401107

subject

Has Abstract

pub_date

1993-11-01 00:00:00

pages

889-95

issue

11

eissn

0003-3197

issn

1940-1574

journal_volume

44

pub_type

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