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Literature DB >> 14653567

A quantitative study of magnetization transfer in MAGIC gels.

Daniel F Gochberg¹, Peter M Fong, John C Gore.

Abstract

Magnetization transfer (MT) has been measured quantitatively as a function of radiation dose in MAGIC polymer gels. The MT rates between the free and immobile macromolecular proton pools (kmr and kfm), and the ratio of the sizes of these coupled proton pools (Pm/Pf), were measured by analysing the response to an inversion recovery sequence. While pm/pf increases linearly with dose, the fast MT rate kmf also increases with dose, unlike previous measurements in BANG gels. This dependence of kmf on dose suggests there are additional factors that modify spin exchange in MAGIC gels as irradiation occurs.

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Year: 2003 PMID： 14653567 PMCID： PMC3919672 DOI： 10.1088/0031-9155/48/21/n01

Source DB: PubMed Journal: Phys Med Biol ISSN： 0031-9155 Impact factor: 3.609

11 in total

A quantitative study of magnetization transfer in MAGIC gels.

1. Studies of magnetization transfer and relaxation in irradiated polymer gels--interpretation of MRI-based dosimetry.

2. Quantitative imaging of magnetization transfer using an inversion recovery sequence.

3. Magnetization transfer imaging for polymer gel dosimetry.

4. Radiation therapy dosimetry using magnetic resonance imaging of polymer gels.

5. Quantitative studies of magnetization transfer by selective excitation and T1 recovery.

6. The role of specific side groups and pH in magnetization transfer in polymers.

7. Cross relaxation and spin diffusion in the proton NMR or hydrated collagen.

8. The effects of cross-link density and chemical exchange on magnetization transfer in polyacrylamide gels.

9. Polymer gels for magnetic resonance imaging of radiation dose distributions at normal room atmosphere.

10. Measurement of radiation dose distributions by nuclear magnetic resonance (NMR) imaging.

1. A rapid approach for quantitative magnetization transfer imaging in thigh muscles using the pulsed saturation method.

2. Quantitative magnetization transfer imaging of rodent glioma using selective inversion recovery.

3. Polymer gel dosimetry by nuclear Overhauser enhancement (NOE) magnetic resonance imaging.

4. Magnetization transfer proportion: a simplified measure of dose response for polymer gel dosimetry.