不同相控阵线圈对前列腺磁共振图像质量的影响。
Impact of different phased-array coils on the quality of prostate magnetic resonance images.
作者信息
Stocker Daniel, Manoliu Andrei, Becker Anton S, Barth Borna K, Nanz Daniel, Klarhöfer Markus, Donati Olivio F
机构信息
Institute of Diagnostic and Interventional Radiology, University Hospital Zurich and University of Zurich, Switzerland.
Max-Planck UCL Centre for Computational Psychiatry and Ageing Research, London, UK.
出版信息
Eur J Radiol Open. 2021 Feb 3;8:100327. doi: 10.1016/j.ejro.2021.100327. eCollection 2021.
PURPOSE
To evaluate the influence of body phased-array (BPA) receive coil setups on signal-to-noise ratio (SNR) and image quality (IQ) in prostate MRI.
METHODS
This prospective study evaluated axial T2-weighted images (T2W-TSE) and DWI of the prostate in ten healthy volunteers with 18-channel (18CH), 30-channel and 60-channel (60CH) BPA receive coil setups. SNR and ADC values were assessed in the peripheral and transition zones (TZ). Two radiologists rated IQ features. Differences in qualitative and quantitative image features between BPA receive coil setups were compared. After correction for multiple comparisons, p-values <0.004 for quantitative and p-values <0.017 for qualitative image analysis were considered statistically significant.
RESULTS
Significantly higher SNR was found in T2W-TSE images in the TZ using 60CH BPA compared to 18CH BPA coil setups (15.20 ± 4.22 vs. 7.68 ± 2.37; p = 0.001). There were no significant differences between all other quantitative (T2W-TSE, p = 0.007-0.308; DWI, p = 0.024-0.574) and qualitative image features (T2W-TSE, p = 0.083-1.0; DWI, p = 0.046-1.0).
CONCLUSION
60CH BPA receive coil setup showed marginal SNR improvement in T2W-TSE images. Good IQ could be achieved with 18CH BPA coil setups.
目的
评估体部相控阵（BPA）接收线圈设置对前列腺MRI中信噪比（SNR）和图像质量（IQ）的影响。
方法
这项前瞻性研究评估了10名健康志愿者使用18通道（18CH）、30通道和60通道（60CH）BPA接收线圈设置时前列腺的轴向T2加权图像（T2W-TSE）和扩散加权成像（DWI）。在周边区和移行区（TZ）评估SNR和表观扩散系数（ADC）值。两名放射科医生对IQ特征进行评分。比较BPA接收线圈设置之间定性和定量图像特征的差异。在进行多重比较校正后，定量分析中p值<0.004和定性图像分析中p值<0.017被认为具有统计学意义。
结果
与18CH BPA线圈设置相比，使用60CH BPA时，TZ的T2W-TSE图像中SNR显著更高（15.20±4.22 vs. 7.68±2.37；p = 0.001）。所有其他定量（T2W-TSE，p = 0.007 - 0.308；DWI，p = 0.024 - 0.574）和定性图像特征（T2W-TSE，p = 0.083 - 1.0；DWI，p = 0.046 - 1.0）之间均无显著差异。
结论
60CH BPA接收线圈设置在T2W-TSE图像中显示出SNR的轻微改善。18CH BPA线圈设置可实现良好的IQ。
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