Abstract
Nuclear magnetic resonance (NMR) non-invasively measures the apparent diffusion coefficient (ADC) of water, which is sensitive to the biophysical characteristics of tissue. Because anti-cancer treatment alters tumour pathophysiology, tumour ADC may be altered by treatment. In order to test this hypothesis, ADC was measured in s.c. implanted murine RIF-1 tumours before and up to 9 days after treatment with cyclophosphamide. A dose-dependent, reversible increase in tumour ADC was observed after cyclophosphamide treatment, which is consistent with an increase in the fraction of interstitial water due to treatment-induced cell death. Because tumour water ADC is increased substantially at a time when there is no change in tumour volume for a dose which produces minimal cell kill, its measurement could provide a novel means for early detection of response to anti-cancer therapy. If the changes in ADC observed in the present study are evident for commonly used anti-cancer therapies in different tumour types and specific to a therapeutic response, this approach could be broadly applicable as a response predictor since magnetic resonance imaging can be used to measure ADC in human tumours.
Original language | English (US) |
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Pages (from-to) | 61-64 |
Number of pages | 4 |
Journal | British journal of cancer |
Volume | 73 |
Issue number | 1 |
DOIs | |
State | Published - 1996 |
Keywords
- Nuclear magnetic resonance
- RIF-1
- Therapeutic response
- Tumour pathophysiology
- Tumour water
ASJC Scopus subject areas
- Oncology
- Cancer Research