Tissue Accessibility of Gd-DTPA in Meningiomas and Neuromas

  • T. Watabe
  • T. Iwata
Conference paper

Abstract

The relaxation rate of water in the presence of Gd-DTPA (gadolinium-diethylenetriamine pentaacetic acid), a contrast agent in magnetic resonance (MR) imaging, is determined by both the intrinsic relaxation rate of water and the relaxivity or relaxation rate contribution (RRC) of Gd-DTPA, as shown by the following equation (Gadian et al. 1985):
$$ 1/\text{T}_{\text{post}} = \text{RRC + 1/T}_{\text{pre}} , $$
(1)
where 1/Tpost and 1/Tpre are either T1 or T2 relaxation of water with and without Gd-DTPA. Although this RRC includes complex physical factors, in living tissue it indicates the degree of tissue concentration of Gd-DTPA or its accessibility to tissue water.

Keywords

Permeability Albumin Adenoma Macromolecule Meningioma 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • T. Watabe
    • 1
  • T. Iwata
  1. 1.Department of RadiologyTokai University School of MedicineBohseidai, Isehara City, Kanagawa Pref. 259-11Japan

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