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腹部同步3D水T₁和T₂映射使用螺旋形状排序的自由呼吸卡特西安采集

Jonathan Stelter¹, Kilian Weiss², Lisa Steinhelfer¹

¹Institute for Diagnostic and Interventional Radiology, School of Medicine and Health, TUM University Hospital, Technical University of Munich, Munich, Germany.

Magnetic resonance in medicine

|September 6, 2025

抽象的

目的:

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方法方法:

拟议的数据采集结合了Look-Locker方案与修改的BIR-4亚底力准备脉冲,同时进行 $w T_{1}$ 和 $w T_{2}$ 的语义映射. 在自由呼吸过程中使用CASPR以同位素分辨率进行高效和灵活的k空间采样. 图像管道包括子空间重建,水-脂肪分离和特定字典匹配. 拟议的方法在使用自旋回声参考技术的水脂肪放松计幻影中得到验证,并与10名志愿者中的MOLLI $T 1$ 和GRASE $T_{2}$ 进行比较. 该方法的灵活性在2.5,3和3.5毫米的同位素分辨率下进行了评估,相应的扫描时间为7:19,5:23,3:52分钟. 此外,该方法应用于9名患有腹部病理的瘤患者.

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幻影实验表明,在广泛的 $w T 1 $$$ 和 $w 2 111111111111211 志愿者研究评估了体内定量性能,并证明了不同空间分辨率的拟议方法的灵活性. 在患有腹部病理的患者中,顺序执行3毫米方法,可以评估直径小于1厘米的病变.$

结论:

采用CASPR的基于Look-Locker的方法使得高效,灵活和同时的

w T 1

和

w T_{2} $$ \rm{m}{T}$2 在空气扫描中以固定分辨率进行映射.

关键词:

查看柜子同位素分辨率肝脏放松计水与脂肪分离

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Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...