A fast 3D Look-Locker method for volumetric T1 mapping
| Autor: | Brian K. Rutt, Graeme C. McKinnon, Elizabeth Henderson, Ting-Yim Lee |
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| Rok vydání: | 1999 |
| Předmět: |
Reproducibility
Phantoms Imaging business.industry Computer science Look locker Biomedical Engineering Biophysics Phase (waves) Brain Reproducibility of Results Magnetic Resonance Imaging T1 measurement Nuclear magnetic resonance Data acquisition Reference Values Image Processing Computer-Assisted Humans Radiology Nuclear Medicine and imaging Acquisition time Computer vision Artificial intelligence business Longitudinal Relaxation Time |
| Zdroj: | Magnetic Resonance Imaging. 17:1163-1171 |
| ISSN: | 0730-725X |
| Popis: | We introduce a fast technique, based on the principles of the 2D Look-Locker T1 measurement scheme, to rapidly acquire the data for accurate maps of T1 in three dimensions. The acquisition time has been shortened considerably by segmenting the acquisition of the ky phase encode lines. Using this technique, the data for a 256 × 128 × 32 volumetric T1 measurement can be acquired in 7.6 min. T1 measurements made in phantoms with T1s between 200 and 1200 ms had an accuracy of 4% and a reproducibility of 3.5%. Measurements of T1 made in normal brain using the fast 3D sequence corresponded well with inversion-recovery fast spin-echo measurements. |
| Databáze: | OpenAIRE |
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