国际放射医学核医学杂志
國際放射醫學覈醫學雜誌
국제방사의학핵의학잡지
INTERNATIONAL JOURNAL OF RADIATION MEDICINE AND NUCLEAR MEDICINE
2012年
1期
52-55
,共4页
杨镜全%高明勇%罗素玲%卢瑞梁%贺小红
楊鏡全%高明勇%囉素玲%盧瑞樑%賀小紅
양경전%고명용%라소령%로서량%하소홍
鼻咽肿瘤%吞咽障碍%磁共振成像%动态扫描
鼻嚥腫瘤%吞嚥障礙%磁共振成像%動態掃描
비인종류%탄인장애%자공진성상%동태소묘
Nasopharyngeal neoplasms%Deglutition disorders%Magnetic resonance imaging%Dynamic scan
目的 比较不同磁共振序列的扫描时间和图像质量,探讨应用其进行吞咽过程动态扫描,为临床提供直观、有效的咽部疾病诊断和治疗依据的可行性.方法 在GE 3.0T MRI系统上选用稳态采集快速成像( FIESTA)和快速梯度回波(FastGRE)序列,并结合阵列空间敏感性编码技术(ASSET),对20例无自觉吞咽困难患者的咽部进行吞咽过程的单层矢状位动态快速扫描,分别连续采集60幅图像,由3位有经验的MRI医师采用双肓法,对所获得的全部图像分别以优、中、劣3种等级进行图像质量目测评价.结果 其他扫描参数相同时,FIESTA、Fast GRE、FIESTA+ASSET和Fast GRE+ASSET序列的扫描时间分别为:54s、28 s、49 s和25 s；Fast GRE+ASSET序列的扫描时间最短；FIESTA、Fast GRE、FIESTA+ASSET和Fast GRE+ASSET序列的图像质量评价的总分值分别44、52、52和56; Fast GRE+ASSET序列获得的图像质量最佳.结论 在GE 3.0T MRI系统上用Fast GRE+ASSET序列进行吞咽动态矢状位成像,咽部结构显示较好,动态电影图像上吞咽过程显示清晰,具有为临床提供更直观、有效的诊断依据的可行性.
目的 比較不同磁共振序列的掃描時間和圖像質量,探討應用其進行吞嚥過程動態掃描,為臨床提供直觀、有效的嚥部疾病診斷和治療依據的可行性.方法 在GE 3.0T MRI繫統上選用穩態採集快速成像( FIESTA)和快速梯度迴波(FastGRE)序列,併結閤陣列空間敏感性編碼技術(ASSET),對20例無自覺吞嚥睏難患者的嚥部進行吞嚥過程的單層矢狀位動態快速掃描,分彆連續採集60幅圖像,由3位有經驗的MRI醫師採用雙肓法,對所穫得的全部圖像分彆以優、中、劣3種等級進行圖像質量目測評價.結果 其他掃描參數相同時,FIESTA、Fast GRE、FIESTA+ASSET和Fast GRE+ASSET序列的掃描時間分彆為:54s、28 s、49 s和25 s；Fast GRE+ASSET序列的掃描時間最短；FIESTA、Fast GRE、FIESTA+ASSET和Fast GRE+ASSET序列的圖像質量評價的總分值分彆44、52、52和56; Fast GRE+ASSET序列穫得的圖像質量最佳.結論 在GE 3.0T MRI繫統上用Fast GRE+ASSET序列進行吞嚥動態矢狀位成像,嚥部結構顯示較好,動態電影圖像上吞嚥過程顯示清晰,具有為臨床提供更直觀、有效的診斷依據的可行性.
목적 비교불동자공진서렬적소묘시간화도상질량,탐토응용기진행탄인과정동태소묘,위림상제공직관、유효적인부질병진단화치료의거적가행성.방법 재GE 3.0T MRI계통상선용은태채집쾌속성상( FIESTA)화쾌속제도회파(FastGRE)서렬,병결합진렬공간민감성편마기술(ASSET),대20례무자각탄인곤난환자적인부진행탄인과정적단층시상위동태쾌속소묘,분별련속채집60폭도상,유3위유경험적MRI의사채용쌍황법,대소획득적전부도상분별이우、중、렬3충등급진행도상질량목측평개.결과 기타소묘삼수상동시,FIESTA、Fast GRE、FIESTA+ASSET화Fast GRE+ASSET서렬적소묘시간분별위:54s、28 s、49 s화25 s；Fast GRE+ASSET서렬적소묘시간최단；FIESTA、Fast GRE、FIESTA+ASSET화Fast GRE+ASSET서렬적도상질량평개적총분치분별44、52、52화56; Fast GRE+ASSET서렬획득적도상질량최가.결론 재GE 3.0T MRI계통상용Fast GRE+ASSET서렬진행탄인동태시상위성상,인부결구현시교호,동태전영도상상탄인과정현시청석,구유위림상제공경직관、유효적진단의거적가행성.
Objective To offer some visual and valuable clinical bases for the pharynx disease diagnosis and treatment by comparing the influence of different scanning sequences on the image quality and scanning time,and studying the application to the dynamic swallowing MRI scanning.Methods The dynamic swallowing scanning of pharyngeal was performed on 20 nasopharyngeal carcinoma patients without deglutition disorders through GE 3.0 MRI system with fast imaging employing steady state acquisition (FIESTA) and fast gradient recalled echo (Fast GRE) sequences,and combined with the array spatial sensitivity encoding technique(ASSET),which accelerating factors was 2.0 ph,and sixty dynamic images were acquired sequentially.The image quality was graded into three classes:excellent,favorable and poor,which were visually assessed by three senior MRI physician using double-blinded method.The quantitative data were analyzed statistically with the SPSS13.0 software.Results Under the same parameters,the scanning time with FIESTA,FIESTA+ASSET,Fast GRE and Fast GREA+ASSET sequences were 54 s,28 s,49 s and 25 s respectively.The number of excellent images with the four sequences were 44,52,52 and 56 respectively.The scanning time was the shortest and the image quality was the best with Fast GRE+ASSET sequence.Conclusions The dynamic imaging of swallowing in sagittal view was achieved with Fast GRE+ASSET sequence on GE 3.0T MRI system.It could present status of the pharynx well,and the soft tissue of swallowing was showed clearly in the dynamic images.These will provide visual and effective evidence for clinical diagnosis and treatment.
