Peripheral nerve diffusion tensor imaging is reliable and reproducible
NG Simon, J Lagopoulos, T Gallagher… - Journal of Magnetic …, 2016 - Wiley Online Library
Journal of Magnetic Resonance Imaging, 2016•Wiley Online Library
Purpose To determine the reliability and reproducibility of peripheral nerve diffusion tensor
imaging (DTI) in healthy subjects. Materials and Methods We assessed the test–retest and
interrater reliability studies of peripheral nerve DTI in a cohort of 12 healthy subjects (mean
age 44.0 years, range 26–71 years). Magnetic resonance imaging (MRI) studies were
performed on a 3T scanner (MR750, GE Healthcare). DTI and T1‐weighted sequences were
performed on the tibial and peroneal nerves in the knee. Each subject was scanned on three …
imaging (DTI) in healthy subjects. Materials and Methods We assessed the test–retest and
interrater reliability studies of peripheral nerve DTI in a cohort of 12 healthy subjects (mean
age 44.0 years, range 26–71 years). Magnetic resonance imaging (MRI) studies were
performed on a 3T scanner (MR750, GE Healthcare). DTI and T1‐weighted sequences were
performed on the tibial and peroneal nerves in the knee. Each subject was scanned on three …
Purpose
To determine the reliability and reproducibility of peripheral nerve diffusion tensor imaging (DTI) in healthy subjects.
Materials and Methods
We assessed the test–retest and interrater reliability studies of peripheral nerve DTI in a cohort of 12 healthy subjects (mean age 44.0 years, range 26–71 years). Magnetic resonance imaging (MRI) studies were performed on a 3T scanner (MR750, GE Healthcare). DTI and T1‐weighted sequences were performed on the tibial and peroneal nerves in the knee. Each subject was scanned on three separate occasions. Image analyses were performed at two anatomic positions: the level of the lateral femoral condyle (position 1), and the superior pole of the patella (position 2). Analysis was performed using three software packages (“raters”): FuncTools, FSL, and Diffusion Toolkit. Metrics obtained included fractional anisotropy (FA), axial diffusivity (AD), and radial diffusivity (RD).
Results
DTI metrics were not significantly different between each measurement position, except peroneal nerve AD and tibial nerve RD were higher at position 1 (P = 0.02 and 0.04, respectively). There was no significant difference in DTI metrics between male and female subjects (P = 0.10–0.99). The test–retest reliability of DTI metrics was high, maximal for FA (intraclass correlation coefficient [ICC] = 0.96). ICC values for individual DTI metrics were similar between each measurement position, except that tibial nerve AD was significantly higher at position 2 (P = 0.03). Interrater reliability was also high (ICC = 0.95–0.96).
Conclusion
We found peripheral nerve DTI to be reliable and reproducible, with few effects related to the postprocessing package used. J. Magn. Reson. Imaging 2016;43:962–969
Wiley Online Library
以上显示的是最相近的搜索结果。 查看全部搜索结果