Relative volume-average murine tumor blood flow measurement via deuterium nuclear magnetic resonance spectroscopy
✍ Scribed by James Mattiello; Jeffrey L. Evelhoch
- Book ID
- 102952329
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 997 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0740-3194
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✦ Synopsis
Abstract
A deuterium NMR spectroscopic method to determine relative tumor blood flow (TBF) by measuring the increase in tumor HOD concentration after intravenous injection of 100 μl D~2~O (0.9% NaCl) is presented. An integration approach analogous to that validated for positron emission tomographic measurement of cerebral blood flow was implemented. Computer simulations indicated that integration from 30 to 120 s minimizes the sensitivity of the uptake integral to the shape of the arterial input function, which cannot be assessed in each mouse, while maintaining both a nearly linear relationship between TBF and the integral and high NMR signal‐to‐noise. A strong positive linear correlation was observed between the uptake integral and TBF measured by D~2~O clearance in both untreated tumors (n = 19; P < 0.001) and tumors after hyperthermia (n = 16; P < 0.001). This method can measure relative TBF in tumors with heterogeneous blood flow and is ideally suited to concurrent or interleaved measurement of TBF and metabolism via multinuclear NMR spectroscopy. © 1991 Academic Press. Inc.