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Abstract：
UNASSIGNED: To evaluate the image quality of high-spatial-resolution two-dimensional (2D) late gadolinium enhancement (LGE) cardiac MRI compared with conventional normal-resolution LGE MRI.
UNASSIGNED: This prospective study included participants suspected of having cardiomyopathy who underwent cardiac MRI between March 2021 and December 2021. Normal-resolution and high-resolution 2D LGE sequences (inversion recovery [IR] and phase-sensitive inversion recovery [PSIR]) were performed at 3 T. Resolution was compared between normal-resolution and high-resolution images obtained in a quality assurance phantom. In vivo image quality and resolution were evaluated qualitatively using a five-point scoring system. Receiver operating characteristic curve analysis was used for LGE detection performance. Border sharpness was assessed with profile curve measurement. The contrast-to-noise ratio (CNR) between hyperenhancement and remote myocardium and LGE detection performance were calculated using normal-resolution IR images as the reference.
UNASSIGNED: In total, 120 participants were evaluated (mean age, 56 years ± 17 [SD]; 72 men). Features smaller than 1 mm were detectable only on high-resolution images of the phantom. In vivo, the image resolution score with high-resolution LGE was 4.14-4.24, which was higher than the normal-resolution LGE reference score of 2.99 (P < .05). Border sharpness was higher in high-resolution images (P < .001). Receiver operating characteristic curve analysis revealed no evidence of a difference in LGE detection between normal-resolution and high-resolution images. There was also no evidence of a change in CNR of LGE in IR and PSIR magnitude compared with reference images.
UNASSIGNED: Comparison of image quality in 2D high-resolution and normal-resolution LGE cardiac MRI demonstrated the highest resolution for high-resolution IR and high-resolution PSIR magnitude sequences.Keywords: Cartilage Imaging, MRI, Cardiac, Heart, Imaging Sequences, Comparative Studies Supplemental material is available for this article. © RSNA, 2022.
UNASSIGNED: This prospective study included participants suspected of having cardiomyopathy who underwent cardiac MRI between March 2021 and December 2021. Normal-resolution and high-resolution 2D LGE sequences (inversion recovery [IR] and phase-sensitive inversion recovery [PSIR]) were performed at 3 T. Resolution was compared between normal-resolution and high-resolution images obtained in a quality assurance phantom. In vivo image quality and resolution were evaluated qualitatively using a five-point scoring system. Receiver operating characteristic curve analysis was used for LGE detection performance. Border sharpness was assessed with profile curve measurement. The contrast-to-noise ratio (CNR) between hyperenhancement and remote myocardium and LGE detection performance were calculated using normal-resolution IR images as the reference.
UNASSIGNED: In total, 120 participants were evaluated (mean age, 56 years ± 17 [SD]; 72 men). Features smaller than 1 mm were detectable only on high-resolution images of the phantom. In vivo, the image resolution score with high-resolution LGE was 4.14-4.24, which was higher than the normal-resolution LGE reference score of 2.99 (P < .05). Border sharpness was higher in high-resolution images (P < .001). Receiver operating characteristic curve analysis revealed no evidence of a difference in LGE detection between normal-resolution and high-resolution images. There was also no evidence of a change in CNR of LGE in IR and PSIR magnitude compared with reference images.
UNASSIGNED: Comparison of image quality in 2D high-resolution and normal-resolution LGE cardiac MRI demonstrated the highest resolution for high-resolution IR and high-resolution PSIR magnitude sequences.Keywords: Cartilage Imaging, MRI, Cardiac, Heart, Imaging Sequences, Comparative Studies Supplemental material is available for this article. © RSNA, 2022.
摘要：
UNASSIGNED：评估与常规正常分辨率LGEMRI相比，高空间分辨率二维（2D）晚期钆增强（LGE）心脏MRI的图像质量。
UNASSIGNED：这项前瞻性研究包括在2021年3月至2021年12月期间接受心脏MRI检查的疑似患有心肌病的参与者。在3T下执行正常分辨率和高分辨率2DLGE序列（反转恢复[IR]和相敏反转恢复[PSIR]）。比较了在质量保证模型中获得的正常分辨率和高分辨率图像之间的分辨率。使用五点评分系统对体内图像质量和分辨率进行定性评估。接收器工作特性曲线分析用于LGE检测性能。用轮廓曲线测量评估边界锐度。使用正常分辨率的红外图像作为参考，计算了过度增强与远程心肌和LGE检测性能之间的对比噪声比（CNR）。
未经批准：总共，对120名参与者进行了评估(平均年龄，56岁±17[SD]；72名男性）。小于1毫米的特征仅在体模的高分辨率图像上可检测到。在体内,高分辨率LGE的图像分辨率评分为4.14~4.24分,高于正常分辨率LGE参考评分2.99分(P<.05).高分辨率图像的边界清晰度较高（P<.001）。接收器工作特性曲线分析显示，没有证据表明正常分辨率图像和高分辨率图像之间的LGE检测存在差异。与参考图像相比，IR和PSIR幅度中LGE的CNR也没有变化的证据。
UNASSIGNED：2D高分辨率和正常分辨率LGE心脏MRI的图像质量比较显示了高分辨率IR和高分辨率PSIR幅度序列的最高分辨率。关键词：软骨成像，MRI,心脏,心,成像序列,比较研究补充材料可用于本文。©RSNA,2022年。
UNASSIGNED：这项前瞻性研究包括在2021年3月至2021年12月期间接受心脏MRI检查的疑似患有心肌病的参与者。在3T下执行正常分辨率和高分辨率2DLGE序列（反转恢复[IR]和相敏反转恢复[PSIR]）。比较了在质量保证模型中获得的正常分辨率和高分辨率图像之间的分辨率。使用五点评分系统对体内图像质量和分辨率进行定性评估。接收器工作特性曲线分析用于LGE检测性能。用轮廓曲线测量评估边界锐度。使用正常分辨率的红外图像作为参考，计算了过度增强与远程心肌和LGE检测性能之间的对比噪声比（CNR）。
未经批准：总共，对120名参与者进行了评估(平均年龄，56岁±17[SD]；72名男性）。小于1毫米的特征仅在体模的高分辨率图像上可检测到。在体内,高分辨率LGE的图像分辨率评分为4.14~4.24分,高于正常分辨率LGE参考评分2.99分(P<.05).高分辨率图像的边界清晰度较高（P<.001）。接收器工作特性曲线分析显示，没有证据表明正常分辨率图像和高分辨率图像之间的LGE检测存在差异。与参考图像相比，IR和PSIR幅度中LGE的CNR也没有变化的证据。
UNASSIGNED：2D高分辨率和正常分辨率LGE心脏MRI的图像质量比较显示了高分辨率IR和高分辨率PSIR幅度序列的最高分辨率。关键词：软骨成像，MRI,心脏,心,成像序列,比较研究补充材料可用于本文。©RSNA,2022年。
