An open question is whether the metabolic changes associated with pathological states and their response to therapy can be observed by NMR spectroscopy. In this grant, we propose to develop Chemical Shift Imaging (CSI) techniques which will allow this question to be answered. To maximize the metabolic information which can be obtained in a clinical setting, procedures for acquiring spatially localized 31P and 1H spectra with the highest possible sensitivity will be integrated with new processing and display algorithms. The integration of these components will permit the metabolic information inherent in the spectra to be correlated with other clinical data, allowing the identification of the most significant spectral parameters. The sensitivity of the data will be improved by designing and building new rf coils, by installing proton decoupling for 31P spectroscopy and by extending water suppression techniques to use with 1H chemical shift imaging (CSI). New data processing procedures and software packages will also be developed for examination planning, automatic first pass analysis of the CSI data, quantifying individual spectra and producing metabolic images. The information in coil sensitivity maps, relaxation times and peak areas of individual spectra will be combined to produce absolute metabolic concentrations, which will then be correlated with the anatomy as depicted in the associated proton images. To test the procedures and build up a database of metabolite concentrations in normal tissue, 31P CSI will be applied to study muscle and brain of volunteers. In the case of brain, a comparison will also be made with the metabolic information provided by localized 1H spectroscopy. In the final years of the grant, the techniques will be applied to study two tumor systems: squamous cell carcinoma metastases of the neck and brain metastases. This will provide an opportunity to study tumor heterogeneity, to compare localized 31P and 1H spectra and to test the feasibility of applying our procedures in a clinical setting. As the procedures being developed in this grant are validated, they will be made available to other investigators so that they can be applied routinely in a clinical setting.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
5R01CA054339-03
Application #
2095836
Study Section
Radiation Study Section (RAD)
Project Start
1992-03-01
Project End
1996-12-31
Budget Start
1994-03-01
Budget End
1994-12-31
Support Year
3
Fiscal Year
1994
Total Cost
Indirect Cost
Name
Fox Chase Cancer Center
Department
Type
DUNS #
042250712
City
Philadelphia
State
PA
Country
United States
Zip Code
19111
Murphy-Boesch, J; Jiang, H; Stoyanova, R et al. (1998) Quantification of phosphorus metabolites from chemical shift imaging spectra with corrections for point spread effects and B1 inhomogeneity. Magn Reson Med 39:429-38
Murphy-Boesch, J; Li, C W; He, L et al. (1997) Proton-decoupled 19F spectroscopy of 5-FU catabolites in human liver. Magn Reson Med 37:321-6
Gonen, O; Murphy-Boesch, J; Li, C W et al. (1997) Simultaneous 3D NMR spectroscopy of proton-decoupled fluorine and phosphorus in human liver during 5-fluorouracil chemotherapy. Magn Reson Med 37:164-9
Gonen, O; Mohebbi, A; Stoyanova, R et al. (1997) In vivo phosphorus polarization transfer and decoupling from protons in three-dimensional localized nuclear magnetic resonance spectroscopy of human brain. Magn Reson Med 37:301-6
Negendank, W; Li, C W; Padavic-Shaller, K et al. (1996) Phospholipid metabolites in 1H-decoupled 31P MRS in vivo in human cancer: implications for experimental models and clinical studies. Anticancer Res 16:1539-44
Kuesel, A C; Stoyanova, R; Aiken, N R et al. (1996) Quantitation of resonances in biological 31P NMR spectra via principal component analysis: potential and limitations. NMR Biomed 9:93-104
Li, C W; Negendank, W G; Murphy-Boesch, J et al. (1996) Molar quantitation of hepatic metabolites in vivo in proton-decoupled, nuclear Overhauser effect enhanced 31P NMR spectra localized by three-dimensional chemical shift imaging. NMR Biomed 9:141-55
Brown, T R; Stoyanova, R (1996) NMR spectral quantitation by principal-component analysis. II. Determination of frequency and phase shifts. J Magn Reson B 112:32-43
Li, C W; Negendank, W G; Padavic-Shaller, K A et al. (1996) Quantitation of 5-fluorouracil catabolism in human liver in vivo by three-dimensional localized 19F magnetic resonance spectroscopy. Clin Cancer Res 2:339-45
Li, C W; Gonen, O (1996) Simultaneous 3D NMR spectroscopy of fluorine and phosphorus in human liver during 5-fluorouracil chemotherapy. Magn Reson Med 35:841-7

Showing the most recent 10 out of 22 publications