| Abstract: |
A methodology for evaluating the accuracy and reproducibility of calculated TVs and T2s has been developed and applied to a General Electric 1.5 T Signa System. Specifically studied were absolute accuracy and temporal stability of image derived Txs and T2s as well as the dependence of calculated relaxation times on position in the scan plane, position along the axis of the magnet bore, the scan plane orientation (axial, sagittal, coronal), and the center frequency. The results of this study of the accuracy and reproducibility of image relaxation times have direct bearing on the design of clinical investigations assessing the diagnostic usefulness of these values. © 1989, American Association of Physicists in Medicine. All rights reserved. |
| Keywords: |
methodology; magnetic resonance imaging; reproducibility; models, biological; imaging; nuclear magnetic resonance; copper; head; nmr; technology, radiologic; t1; sepharose; relaxation time; priority journal; t2; support, non-u.s. gov't; support, u.s. gov't, p.h.s.; models, structural; relaxation timos; copper sulfate
|
