## Abstract A pulse sequence is presented which allows one to perform an inversion–recovery experiment for __T__~1~ determination on quadrupolar nuclei in the presence of acoustic ringing. The sequence is based on a modification of the reference baseline subtraction −90° pulse sequence. Some exampl
The design of a multiple inversion recovery sequence for T1 measurement
✍ Scribed by I. R. Young; A. S. Hall; G. M. Bydder
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 523 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0740-3194
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✦ Synopsis
Inversion recovery has the potential to be a powerful method of determining the values of T1 in in vivo studies. However, because of its relative slowness it is not practical to undertake several experiments with different values of the interval between the magnetization inverting 180 degree pulse and the interrogating 90 degree one. The multiple inversion recovery method described here uses a series of sampling pulses, most much less than 90 degrees, to produce a series of images. It is shown that slice shape is relatively reproducible from one sample to another and that, largely as a result, the accuracy of the sequence in measuring T1 is encouraging.
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## Abstract A simple scheme for the polarity correction of absolute images from inversion recovery multi‐image T1 measurement sequences is described and demonstrated. This method is less sensitive to errors from eddy currents than the conventional full phase correction schemes and does not involve
## Abstract TOMROP is a multiple readout single inversion‐recovery sequence which may potentially allow the measurement of multi‐exponential T~1~ recoveries __in vivo__ by NMR imaging. It is shown that several important modifications must be made to this sequence to permit T~1~ to be measured accur
The purpose of this paper was to develop and evaluate a fast inversion recovery (FIR) technique for T1-weighted MR imaging of contrast-enhancing brain pathology. The FIR technique was developed, capable of imaging 24 sections in approximately 7 minutes using two echoes per repetition and an alternat