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摘要目的评估自由呼吸状态三维(3D)径向超短回波时间(UTE)MR成像检测肺栓塞(PE)的同时高质量评价肺实质的可行性。材料与方法该研究获得了动物保护委员会的许可。共12只猎兔犬在用自体血凝块诱发肺栓塞前后均进行了MRI及CT检查。在3 T MR进行了屏气3D血管成像及自由呼吸状态3D径向超短回波时间成像(1.0 mm各向同性空间分辨率;回波时间为0.08 ms)。2位放射医师采用盲法将MR血管成像及UTE成像获得的所有肺栓塞进行标记并按
Abstract Objective To evaluate the feasibility of three-dimensional (3D) radial ultrashort echo time (UTE) MR imaging of free breathing state in the detection of pulmonary embolism (PE) while evaluating the quality of lung parenchyma. Materials and Methods The study was approved by the Animal Protection Commission. A total of 12 beagle dogs with autologous blood clot-induced pulmonary embolism were performed before and after MRI and CT examination. 3D gastroscopic 3D angiography and free-breathing 3D radial ultra-short echo time imaging (1.0 mm isotropic spatial resolution; echo time 0.08 ms) were performed at 3 T MR. Two radiologists used blinded methods to mark all pulmonary emboli obtained by MR angiography and UTE imaging and press