T1 and T2 measurements on a 1.5-T commercial MR imager |
| |
Authors: | Breger, RK Rimm, AA Fischer, ME Papke, RA Haughton, VM |
| |
Affiliation: | Department of Radiology, Medical College of Wisconsin, Froedtert Memorial Lutheran Hospital, Milwaukee 53226. |
| |
Abstract: | In order for relaxation times to be used in clinical diagnosis, the precision of the measurement must be determined. The authors measured T1, T2, and proton density in a phantom and in human volunteers to determine the reproducibility of the method. The coefficient of variance of T1 measurements in the phantom during a 15-month period with two software upgrades was 5%. Variance of T2 measurements with any given software was 4% or less, and overall in the 15-month period, with two software changes, the T2 reproducibility was between 6% and 9%. The reproducibility is sufficiently high that precise clinical measurements of T1, T2, and proton density are feasible. |
| |
Keywords: | |
|
| 点击此处可从《Radiology》浏览原始摘要信息 |
|
点击此处可从《Radiology》下载全文 |
|