压缩感在女性骨盆磁共振3特斯拉诊断不孕症研究中的应用

Curatolo Calogero, Amato Maria Chiara, Daricello Marco, Caruso Virginia, Loverro Giuseppe, Galia Massimo, LorenteJose Antonio
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摘要

压缩感(CS)是并行成像(PI)领域的一项技术创新,它可以将每个序列的采集时间减少50%,减少MRI检查的整个持续时间,它基于3个原则的应用:非相干k空间子采样、稀疏化变换和非线性迭代重建。我们的工作目的是评估CS在女性骨盆不孕症MRI方案中的应用,与经典PI技术SENSE相比,评估其时间分辨率和信噪比(SNR)。MRI检查采用RM 3T扫描仪(Philips Ingenia, Philips Healthcare,荷兰埃因霍温)。女性骨盆MRI方案包括以下序列:3D PelvisView T2, 3D PelvisView T1, DWI (b0和b1000), mDixon 3D THRIVE with ev。对比媒体。除了不适用CS的DWI外,每个序列的参数都是通过对Sense和Compressed Sense应用的比较来显示的。与传统的SENSE相比,CS允许在相同的空间分辨率下获得更快的采集时间,纠正数据子采样产生的混叠影响。综上所述,CS的应用可以为女性不孕症的磁共振成像领域带来多重优势,优化图像质量和每次检查的时间。
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Application of the compressed sense in the study of female pelvi in magnetic resonance 3 Tesla for the diagnosis of infertility in women
Compressed Sense (CS) is a technological innovation in the field of Parallel Imaging (PI) that allows to reduce up to 50% the acquisition time per single sequence, reducing the whole duration of the MRI examination, and is based on the application of 3 principles: Incoherent k-space subsampling, sparsification transform and nonlinear iterative reconstruction. The purpose of our work was to evaluate the application of CS to the MRI protocol of the female pelvis performed for infertility, evaluating its Temporal Resolution and Signal/Noise Ratio (SNR) compared to the classic PI technique SENSE. MRI exams were performed with RM 3T scanners (Philips Ingenia, Philips Healthcare, Netherlands Eindhoven). The female pelvis MRI protocol included the following sequences: 3D PelvisView T2, 3D PelvisView T1, DWI (b0 and b1000), mDixon 3D THRIVE with ev. contrast media. The parameters of each sequence, with the exception of DWI in which the CS is not applicable, are shown in comparison between the application of Sense and Compressed Sense. The CS allows to obtain at the same spatial resolution, a protocol with faster acquisition times, correcting the effect of aliasing from data subsampling compared to conventional SENSE. In conclusion, the application of CS could bring multiple advantages in the field of MR imaging in the diagnosis of infertility in women, optimizing the image quality and the duration of each individual examination.
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