当前位置： SCI文献检索 > EUROPEAN JOURNAL OF RADIOLOGY期刊下所有文献 > Evaluating feasibility of high resolution T1-perfusion MRI with whole brain coverage using compressed SENSE: Application to glioma grading.

Evaluating feasibility of high resolution T1-perfusion MRI with whole brain coverage using compressed SENSE: Application to glioma grading.

Abstract：

PURPOSE:To evaluate the efficacy of optimized T1-Perfusion MRI protocol (protocol-2) with whole brain coverage and improved spatial resolution using Compressed-SENSE (CSENSE) to differentiate high-grade-glioma (HGG) and low-grade-glioma (LGG) and to compare it with the conventional protocol (protocol-1) with partial brain coverage used in our center. METHODS:This study included MRI data from 5 healthy volunteers, a phantom and 126 brain tumor patients. Current study had two parts: To analyze the effect of CSENSE on 3D-T1-weighted (W) fast-field-echo (FFE) images, T1-W, dual-PDT2-W turbo-spin-echo images and T1 maps, and to evaluate the performance of high resolution T1-Perfusion MRI protocol with whole brain coverage optimized using CSENSE. Coefficient-of-Variation (COV), Relative-Percentage-Error (RPE), Normalized-Mean-Squared-Error (NMSE) and qualitative scoring were used for the former study. Tracer-kinetic (Ktrans,ve,vp) and hemodynamic (rCBV,rCBF) parameters computed from both protocols were used to differentiate LGG and HGG. RESULTS:The image quality of all structural images was found to be of diagnostic quality till R = 4. NMSE in healthy T1-W-FFE images and COV in phantom images increased with-respect-to R and images provided optimum quality till R = 4. Structural images and maps exhibited artefacts from R = 6. All parameters in tumor tissue and hemodynamic parameters in healthy gray matter tissue computed from both protocols were not significantly different. Parameters computed from protocol-2 performed better in terms of glioma grading. For both protocols, rCBF performed least (AUC = 0.759 and 0.851) and combination of all parameters performed best (AUC = 0.890 and 0.964). CONCLUSION:CSENSE (R = 4) can be used to improve the resolution and brain coverage for T1-Perfusion analysis used to differentiate gliomas.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Sasi S D,Ramaniharan AK,Bhattacharjee R,Gupta RK,Saha I,Van Cauteren M,Shah T,Gopalakrishnan K,Gupta A,Singh A

doi

10.1016/j.ejrad.2020.109049

subject

Has Abstract

pub_date

2020-08-01 00:00:00

pages

109049

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(20)30238-2

journal_volume

129

pub_type

杂志文章

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