Quantitative & Qualitative Evaluation of a 64-channel phase array coil and compare it to a 20-channel phase array in brain imaging at 3 Tesla scanner

Congress:

ECR 2020

Poster Number:

C-01519

Type:

Scientific Exhibit

Keywords:

Performed at one institution, Experimental, Prospective, Image verification, Equipment, MR, Neuroradiology brain, Head and neck, MRI

Authors:

R. Lee, K. M. P. AU YEUNG, J. K. F. Chan, G. Lo, K. M. Chan; Hong Kong/CN

DOI:

10.26044/ecr2020/C-01519

DOI-Link:

https://dx.doi.org/10.26044/ecr2020/C-01519

Fig. 2: Figure 1. ROI measurements of SNR and CNR

Table 2: SNR analysis of 20 Vs 64-channel coil in each ROI

Table 3: CNR analysis of 20 Vs 64-channel coil

Fig. 3: Representative image: 64 vs 20-channel coil comparison of T1-weighted image

Purpose

In recent decades, there has been widespread use of multichannel coils to improve speed, signal and quality of MR imaging. The purpose of this study was to quantitatively and qualitatively evaluate a 64-channel head/neck phase array coil versus 20-channel Head/Neck coil (Figure 1).

Methods and materials

In an intraindividual comparative study,5 volunteers (three women, two men; mean age, 38, range, 36–41 years) with no history of neurological disease underwent 3 Tesla MRI (SIEMENS Magnetom Skyra) brain scan using a 64-channel head/neck array coil and quantitatively compared to a 20-channel head/neck array coil. Axial T1, T2-weighted sequences (Table 1) were acquired. Quantitative analysis included signal-to-noise (SNR) and contrast-to-noise (CNR) values were calculated based on signal intensity (SI) measurements of selected regions (Figure 2). T2-weighted images were used for SNR assessment. Regions of...

Results

64-channel coil showed significantly higher mean SNR (p

Conclusion

Limitations: Current study is limited by small sample size and only conventional T1 and T2 sequences were being evaluated.Further studies need to further address protocol optimization and the impact on difference sequences such as functional imaging by using 64-channel phase array coil. 3-Tesla MRI with 64-channel phase array coil provides higher SNR and CNR in brain imaging. However, qualitative evaluation did not show significant qualitative improvement.

Personal information and conflict of interest

R. Lee; Hong Kong/CN - nothing to disclose J. K. F. Chan; Hong Kong/CN - nothing to disclose G. Lo; Hong Kong/CN - nothing to disclose K. M. P. Au Yeung; Hong Kong/CN - nothing to disclose K. M. M. Chan; Hong Kong/CN - nothing to disclose

References

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