Detecting Peripheral Nerves in the Elbow using Three-Dimensional Diffusion-Weighted PSIF Sequences: a Feasibility Pilot Study

Na, Domin; Ryu, Joo-Hyung; Hong, Suk Joo; Hong, Sun; Yoon, Min Ho; Ahn, Kyung‐Sik; Kang, Chang Ho; Kim, Baek Hyun

doi:10.13104/imri.2016.20.2.81

Cited by 1 publication

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is T2-weighted and has negligible T2* weighting. In addition, the features of T2_FFE using the SE component render it insensitive to local magnetic field inhomogeneity 9 , 11 , 17 . As a gradient-spoiled sequence, T2_FFE is particularly sensitive to diffusive motion, especially when the spoiler precedes imaging 8 , 18 , 19 .…”

Section: Discussionmentioning

confidence: 99%

“…In the past, T2_FFE was associated with a relatively low signal-to-noise ratio (SNR), which limited its clinical use 7 . With the growing popularity of high-field MR systems, T2_FFE is increasingly being used in clinical settings, such as in peripheral nerve imaging 11 – 13 . Meanwhile, T2_FFE employs gradient echoes for faster data acquisition, exhibits high imaging efficiency, and can obtain T2-weighted 3D isotropic images within a short time.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carotid wall imaging with 3D_T2_FFE: sequence parameter optimization and comparison with 3D_T2_SPACE

Yang

Xiao

Wang

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Similar to sampling perfection with application-optimized contrast using different flip angle evolutions (SPACE), T2-weighted fast field echo (FFE) also has a black blood effect and a high imaging efficiency. The purpose of this study was to optimize 3D_T2_FFE and compare it with 3D_T2_SPACE for carotid imaging. The scanning parameter of 3D_T2_FFE was optimized for the imaging of the carotid wall. Twenty healthy volunteers and 10 patients with carotid plaque underwent cervical 3D_T2_FFE and 3D_T2_SPACE examinations. The signal-to-noise ratios of the carotid wall (SNRwall) and lumen (SNRlumen), and the contrast-to-noise ratios between the wall and lumen (CNRwall_lumen) were compared. The incidence of the residual flow signal at the carotid bifurcation and the grades of flow voids in the cerebellopontine angle region in the two sequences were also compared. The reproducibility of the two sequences was tested. No significant difference was observed between the two sequences in terms of the SNRwall of healthy individuals and patients (P = 0.132 and 0.102, respectively). The SNRlumen in the 3D_T2_FFE images was lower than that in the 3D_T2_SPACE images. No significant difference was observed between the two sequences in terms of the CNRwall-lumen. The incidence of the residual flow signal at the carotid bifurcation in 3D_T2_FFE was significantly lower than that in 3D_T2_SPACE. The grades of flow suppression in the cerebellopontine angle region in 3D_T2_SPACE was lower than that in 3D_T2_FFE. Both sequences showed excellent inter-and intra-observer reproducibility. Compared to 3D_T2_SPACE, 3D_T2_FFE showed stronger flow suppression while maintaining good imaging quality, which can be used as an alternative tool for carotid imaging.

show abstract