Magnetic resonance imaging.
Publisher:
Pergamon,. Amsterdam : Elsevier (2008)
Frequency: Ten no. a year
Country: Netherlands
Language: English
Start Year:1982 -
ISSN:
0730-725X (Print)
1873-5894 (Electronic)
0730-725X (Linking)
1873-5894 (Electronic)
0730-725X (Linking)
Impact Factor
2.5
2022
| NLM ID: | 8214883 |
| (DNLM): | M01133000(s) |
| (OCoLC): | 08047251 |
| Coden: | MRIMDQ |
| LCCN: | 82645444 |
| Classification: | W1 MA34H |
Optimisation of T2 and M0 measurements of bi-exponential systems. Cramer-Rao theory and computer simulations were used to show that the errors involved in calculating the magnetization and relaxation parameters of a two-component system decrease with: (1) increasing SNR, (2) increasing number of echoes used in the fitting procedure, and (3) increasing ratio of the relaxation times of the two components, T(22)/T(21). Images of bi-compartmental phantoms of known T(2) values were acquired using an optimized imaging sequence, and an optimized fitting algorithm was used to calculate the T(2) values of the two components by fitting the resulting images to a bi-exp...