分子影像学杂志2025，Vol.48Issue(3)：347-352,6.DOI:10.12122/j.issn.1674-4500.2025.03.14
小视野HyperCUBE序列并压缩感知技术在单髋关节高清成像中的应用价值
Application value of the small field HyperCUBE sequence and compressed sensing HyperSense technology in high-definition imaging of single hip joint
摘要
Abstract
Objective To explore the application value of small field HyperCUBE sequence and compressive sensing(HS)technology in high-definition imaging of single hip joint,in order to shorten scanning time and optimize scanning process while ensuring image quality.Methods Twenty healthy volunteers,half male and half female,aged 20-35 years old were employed.All volunteers underwent unilateral coronal hip joint scans on a 1.5T MRI.The scan sequences were as followed:conventional HyperCUBE,HyperCUBE with HS(HS factor 1.25,1.5,2.0,respectively),with scan times of 6 min 21 s,3 min 22 s,2 min 14 s,1 min 41 s,respectively.After the scanning was completed,subjective and objective evaluations were conducted on the 4 sets of images.The subjective evaluation was conducted by two associate chief physicians with more than 10 years of imaging diagnosis experience by using a"5-point method"for double-blind evaluation.The subjective evaluation items included image uniformity,artifacts,image blur degree,and overall image quality.The results were statistically analyzed using rank sum test,and the consistency of the evaluators will be analyzed using Kappa analysis;Objective evaluation was based on image signal-to-noise ratio(SNR),background noise,and contrast noise ratio(CNR),and results were analyzed via using univariate analysis of variance for statistical analysis.Results The subjective scores for conventional HyperCUBE,HyperCUBE with HS(HS factor 1.25),HyperCUBE with HS(HS factor 1.5),HyperCUBE with HS(HS factor 2.0)were as followed:the quartiles of image uniformity were(4,5),(4,5),(4,5),(4,5)(P>0.05);The quartiles of image artifact were(4,5),(4,5),(3,4),(3,3)(P<0.05);The quartiles of image blur degree were(4,5),(4,5),(3.25,4),(3,2)(P<0.05);The quartiles of overall image quality were(4,5),(4,5),(3.25,3),(2.25,2.50)(P<0.05).The objective scores of four groups were as followed:femoral head SNR:34.54±3.65,44.98±3.41,30.54±1.32,29.54±1.98(P<0.05);Background noise:10.69±1.13,5.54±1.31,3.54±1.28,2.11±1.98(P<0.05);Femoral head muscle CNR:163.45±11.47,168.61±15.12,161.61±15.12,168.45±10.67(P>0.05).Conclusion The HyperCUBE small field 3D ultra long echo chain pseudo steady state fast spin echo sequence can shorten the scanning time without increasing oversampling and scanning time by applying ultra selective saturation pulses.In addition,the combination of the new MRI acceleration technology HyperSense can further accelerate the scanning speed,providing strong support for clinical 3D high-definition single hip joint scanning.HyperCUBE with HS1.25 could exhibit the imaging capability of the best image quality.关键词
压缩感知/HyperCUBE/MRI/髋关节Key words
HyperSense/HyperCUBE/MRI/hip joint引用本文复制引用
炼宇飞,韩晓东,黄仲夏,吴涛..小视野HyperCUBE序列并压缩感知技术在单髋关节高清成像中的应用价值[J].分子影像学杂志,2025,48(3):347-352,6.基金项目
北京市石景山区卫生与健康委员会医学重点学科建设项目(石卫健医发[2021]2号) （石卫健医发[2021]2号）
