01 水脂分离技术的发展历程 02 脂肪分数(FF)的临床应用 2.1 评估非酒精性脂肪性肝病(NAFLD) [图2] 男,35岁,NAFLD患者超声与IDEAL-IQ比较图。A.超声诊断中度脂肪肝;B.IDEAL-IQ测量FF值为20.15%;C.经减肥手术后3个月复查,超声仍诊断中度脂肪肝;D. IDEAL-IQ测量FF值为14.35%,较术前肝脏脂肪含量减少5.8%。 2.2 肝移植供体肝脏脂肪变性评估 [图3] IDEAL-IQ检查FF值与肝穿刺活检结果高度一致,结果间呈现近似线性关系。 [图4] IDEAL-IQ检查与肝穿刺活检时间间隔长短对结果一致性无明显影响 2.3 化疗患者肝脂肪变性程度评估 2.4 评估骨髓的生理性改变 [图5] 健康女性椎体FF值与年龄的相关性 2.5 评估骨髓的病理性改变 2.6 评估皮下脂肪含量 2.7 评估胰腺的脂肪含量 03 R2*值的临床应用 3.1 评估肝脏的铁含量 [图6] 铁代谢模式图。十二指肠吸收口服铁。由于HFE基因缺陷导致遗传性血色病,造成肠道吸收铁增加,过多的铁分布于肝脏、胰腺(β细胞)及心肌。反复输血导致含铁血黄素沉着症,铁主要分布于网状内皮系统中(脾脏、骨髓、肝脏Kupffer细胞)。溶血可导致铁在肾脏近曲小管中积聚。 3.2 评估胰腺的铁含量 04 IDEAL-IQ技术的不足和展望 参考文献: [1] DIXON W T. Simple proton spectroscopic imaging[J]. Radiology,1984,153(1):189-194. [2] REEDER S B, WEN Z F, YU H Z, et al. Multicoil Dixon chemical species separation with an iterative least squares estimation method[J]. Magnetic Resonance in Medicine,2004,51(1):35-45. [3] REEDER S B, PINEDA A R, WEN Z F, et al. Iterative decomposition of water and fat with Echo asymmetry and least-squares estimation(IDEAL): Application with fast spin-Echo imaging[J]. Magnetic Resonance in Medicine,2005,54(3):636-644. [4] YU H Z, MCKENZIE C A, SHIMAKAWA A, et al. Multiecho reconstruction for simultaneous water-fat decomposition and T2* estimation[J]. Journal of Magnetic Resonance Imaging:JMRI,2007,26(4):1153-1161. [5] YU H Z, SHIMAKAWA A, MCKENZIE C A, et al. Multiecho water-fat separation and simultaneous R2* estimation with multifrequency fat spectrum modeling[J]. Magnetic Resonance in Medicine,2008,60(5):1122-1134. [6] 赵金丽,田浩,梁博,等.3.0T磁共振 IDEAL-IQ技术对比超声评估 NAFLD中脂肪含量的价值分析[J].交通医学,2018,32(2):177-179. [7] 林铭霞,莫绪凯,林志超,等.IDEAL-IQ技术诊断OSAS患者非酒精性脂肪性肝病[J].暨南大学学报(自然科学与医学版),2018,39(5):454-460. [8] 彭秀华,郑银元,赵红星.IDEAL-IQ定量评估非酒精性脂肪肝与冠状动脉钙化的相关性[J].实用放射学杂志,2020,36(4):639-642. [9] Fan JG, Saibara L, Chitturi S, et al.What are the risk factors and settings of non—alcoholic fatty liver disease in Asia—Pacific?[J].Gastroenterol Hepatol, 2007, 22:794-800. [10] Fan JG. Strengthen the management of chronic viral hepatitis patients with fatty liver. Zhonghua Ganzangbing Zazhi, 2009,17:801-803. [11] CHIANGH J,LIN L H,LIC W,etal.Magnetic resonance fat quantification in living donor liver transplantation[J].TransplantationProceedings,2014,46(3):666-668. [12] ULUSOYOL, BARLASS, OZ A, et al. Assessment of hepatic steatosis in living donor livertransplantation:comparison between IDEAL MRI and CT[J]. Journal of Academic Research in Medicine,2018,8(3):182-185. [13] CORRIAS G,KREBS S,ESKREIS-WINKLER S,et al.MRI liver fat quantification in an oncologic population:the added value of complex chemical shift-encoded MRI[J].Clinical Imaging,2018,52:193-199. [14] 代岳,王姗,徐慧婷,等.IDEAL-IQ技术对不同年龄椎体骨髓脂肪含量的定量评价[J].中国医学计算机成像杂志,2017,23(2):161-165. [15] ERGEN F B, GULAL G, YILDIZ A E, et al.Fat fraction estimation of the vertebrae in females using the T2*-IDEAL technique in detection of reduced bone mineralization level:comparison with bone mineral densitometry[J]. Journal of Computer Assisted Tomography,2014,38(2):320-324. [16] 孟楠,岳巍,翟战胜,等.骨盆部IDEAL-IQ及DWI成像对女性贫血的诊断价值[J].中国 CT和 MRI杂志,2018,16(9):119-122. [17] 韩晓蕊,洪郭驹,刘宇,等.单侧激素性股骨头坏死患者正常侧股骨头脂肪含量及局部微循环:MR IDEAL-IQ和 IVIM-DWI研究[J].放射学实践,2017,32(12):1291-1294. [18] 韩晓蕊.IDEAL-IQ联合 IVIM-DWI对激素性股骨头坏死脂肪含量及局部微循环的相关性研究[D].广州:广州中医药大学,2017. [19] REN C,ZHU Q,YUAN H S.Mono-exponential and bi-exponential model-based diffusion-weighted MR imaging and IDEAL-IQ sequence for quantitative evaluation of sacroiliitis in patients with ankylosing spondylitis[J]. Clinical Rheumatology,2018,37(11):3069-3076. [20] 常红花,赵红翠,于洋,等.IDEAL-IQ对多囊卵巢综合征患者与健康女性颈部锁骨上、肝脏及皮下脂肪的对照研究[J].临床放射学杂志,2018,37(12):2063-2067. [21] 董鑫.IDEAL-IQ在多发性肌炎与皮肌炎中的应用[D].南宁:广西医科大学,2017. [22] 李元.胰腺、肝脏异位脂肪沉积 IDEAL-IQ定量及MicroRNA-19a-3p与 2型糖尿病的相关性研究[D].重庆:重庆医科大学,2018. [23] 张钦和,刘爱连,宋清伟,等.IDEAL-IQ对非酒精性脂肪肝患者胰腺脂肪含量的定量评估[J].临床放射学杂志,2019,38(3):553-557. [24] 郭若汨,唐文杰,朱叶青,等.磁共振 IDEAL-IQ序列对肝脏脂肪变性和铁过载的诊断价值[J].中山大学学报(医学科学版),2015,36(5):689-692. [25] 郭维亚.磁共振 IDEAL-IQ技术评估原发性肝细胞癌分化程度的价值[D].大连:大连医科大学,2017. [26] 张志诚,林钱森,黄永础,等.高场磁共振 IDEAL-IQ技术在急性胰腺炎中的应用价值研究[J].临床放射学杂志,2018,37(12):2006-2009. [27] 刘梦苓,黄小华,徐红霞,等.磁共振 IDEAL-IQ序列对急性胰腺炎状态下胰腺脂肪沉积和铁沉积的评估[J].放射学实践,2018,33(12):1266-1271. [28] LIVINGSTONE R S,BEGOVATZ P,KAHL S,et al.Initial clinical application of modified Dixon with flexible Echo times:hepatic and pancreatic fat assessments in comparison with 1H MRS[J].Magma,2014,27(5):397-405. [29] LIU W,DI Q,LAI Y Y,et al.The value of using 3.0T MRI different analysis methods for quantitative analysis of In vitro model fat[J].Chinese Journal of Radiology,2014,48(12):1033-1037. |
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