臨床上要在有效的時間內，得到有診斷價值的磁振影像是相當重要的。但是，往往會發生病人因爲躁動不能配台檢查，而造成影像的模糊，並影響到醫師的判讀；本研究即在探討螺旋槳式快速自旋回波的技術是否可改善這個現象。我們利用GE 1.5T磁振造影儀對20位志願受試者進行腦部的磁振掃描。受試者同時接受FRFSE T2、DWI與T2 FLAIR等三種常規磁振掃描技術以及它們分別加上PROPELLER FSE技術的檢查。檢查後，先由兩位放射科醫師判讀各影像的假影消除效果並予以評分，我們再進行影像得分之統計分析與比較。研究結果發現：（一）、當受試者靜止不動時，6種技術的影像都沒有運動假影。（二）、受試者輕微運動時，FRFSE T2和T2 FLAIR的影像發現有明顯的運動假影，而DWI雖因掃瞄時間最短，運動假影較少，但影像的解析度較差；而相對應的PROPELLER FSE技術，則可以有效的去除運動假影。（三）、受試者嚴重運動時，6種技術的影像都有嚴重的運動假影，無法得到好的影像供醫師判讀。因此我們得到以下的結論：應用於輕微運動患者的檢查時，PROPELLER FSE技術是目前最佳的選擇，可以有效的去除運動假影。除此之外，該技術還可以解決DWI掃描技術中來自金屬性假牙所造成的磁敏感假影。但實驗結果也發現，PROPELLER FSE技術對於消除顱頂影像的運動假影，雖然有一定的效果，但比顱頂到顱底之間其他大部分切面的影像效果差，所以還有改善的空間。

In clinical, it is very important to get diagnostically valuable magnetic resonance images (MRI) efficaciously, especially for the uncooperative patients. Owing to the image blurring artifacts from motion of patient, the obtained MR images may be hard to interpret by doctors. The purpose of this study is therefore to investigate the Periodically Rotated Overlapping Parallel Lines Enhanced Reconstruction Fast Spin Echo (PROPELLER FSE) technique can improve this problem or not. The GE 1.5 Tesla MR scanner was used to exam 20 healthy volunteers. Six different techniques were used in comparison: FRFSE T2 vs. PROPELLER FSE T2, T2 FLAIR vs. PROPELLER T2 FLAIR and DWI vs. PROPELLER FSE DWI. After images were obtained, two experienced radiologists gave score to each image. Then, the difference of images were compared and analyzed. The results indicated that: (1) When the volunteers kept still during examination: all of the six techniques provided good quality for all images. (2) When the volunteers had slight motion during examination: both of the FRFSE and T2 FLAIR images showed obviously motion artifacts, and even though the shortest time-consuming DWI method had less motion artifacts, its image resolution was still not high enough. However, the PROPELLER FSE technique could effectively eliminate motion artifacts. (3) When the volunteers had vigorous motion during examination: all of the six techniques gave severe motion artifacts and most of the images were unable to interpret. We can conclude this study as following: PROPELLER FSE technique would be the best choice for patients with slight motion due to its motion artifacts elimination ability. By the way, this technique could also reduce the distortion problems came from susceptibility artifacts of metallic implants. Through this study, we also found that PROPELLER FSE technique could eliminate motion artifacts more effectively on the vertex than other parts of human brain. However, it still needs some more improvement to fit clinical requirements.