磁共振3D-VIBE序列和STAR-VIBE序列对肺结节显示能力的比较研究
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摘要
目的探讨磁共振快速三维容积式插入法屏气检查(three-dimensional volumetric interpolatedbreath-holdexamination,3D-VIBE)序列和STAR-VIBE(starvolumetric interpolatedbreath-holdexamination)序列对肺结节显示能力的差异。材料与方法收集本院临床怀疑肺占位且行胸部CT及胸部MRI检查患者42例,采用3.0 T磁共振进行3D-VIBE序列和STAR-VIBE序列扫描。由两名具有5年以上工作经验的影像科医师以CT图像作为参考标准对磁共振图像进行独立分析,计算不同磁共振序列肺结节检出率,并采用四分量表法评价不同磁共振序列显示肺结节的形态特征。结果 42例患者CT共检出肺结节258个,STAR-VIBE序列共检出结节243个(检出率约94.2%),3D-VIBE序列共检出结节166个(检出率约64.3%)。STAR-VIBE序列对肺结节检出率显著高于3D-VIBE序列(P<0.05),其中STAR-VIBE序列在直径≥6 mm结节的检出率达100%。STARVIBE序列显示肺结节形态特征的主观评分均优于3D-VIBE序列(P均<0.05)。结论与3D-VIBE序列比较,STAR-VIBE序列不仅可以提高肺结节检出率,还可以提供更多的肺结节形态特征信息。
Objective: To explore the application of magnetic resonance imaging with threedimensional volumetric interpolated breath-hold examination(3D-VIBE) sequence and STAR-VIBE sequence in displaying pulmonary nodules. Materials and Methods: Forty-two patients who were suspected with lung lesions and underwent chest CT and chest MRI were collected. Magnetic resonance imaging with 3D-VIBE sequence and STAR-VIBE sequence were performed using a 3.0 T magnetic resonance scanner. Magnetic resonance images were independently analyzed by two radiologists who owned more than five years working experience with CT images as a reference standard. The detection rates of pulmonary nodules in different MRI sequences were calculated, and the morphological features of pulmonary nodules were evaluated on magnetic resonance imaging using the 4-point scoring criteria. Results: Two hundred and fifty-eight pulmonary nodules were detected on CT images in 42 patients, 243 pulmonary nodules were detected on STAR-VIBE sequence(detection rate 94.2%), while 166 pulmonary nodules were detected on 3D-VIBE sequence(detection rate 64.3%). The detection rate of STAR-VIBE sequence was significantly higher than that of 3D-VIBE sequence, and detection rate increased to 100% for those pulmonary nodules with diameter ≥6 mm on STARVIBE sequence. The subjective scores of STAR-VIBE sequence were significantly superior to 3D-VIBE sequence in displaying morphological features of pulmonary nodules(all P<0.05). Conclusions: Compared with 3D-VIBE sequence, STAR-VIBE sequence not only improves the detection rate of pulmonary nodules, but also provides more information on the morphological features of pulmonary nodules.
Objective: To explore the application of magnetic resonance imaging with threedimensional volumetric interpolated breath-hold examination(3D-VIBE) sequence and STAR-VIBE sequence in displaying pulmonary nodules. Materials and Methods: Forty-two patients who were suspected with lung lesions and underwent chest CT and chest MRI were collected. Magnetic resonance imaging with 3D-VIBE sequence and STAR-VIBE sequence were performed using a 3.0 T magnetic resonance scanner. Magnetic resonance images were independently analyzed by two radiologists who owned more than five years working experience with CT images as a reference standard. The detection rates of pulmonary nodules in different MRI sequences were calculated, and the morphological features of pulmonary nodules were evaluated on magnetic resonance imaging using the 4-point scoring criteria. Results: Two hundred and fifty-eight pulmonary nodules were detected on CT images in 42 patients, 243 pulmonary nodules were detected on STAR-VIBE sequence(detection rate 94.2%), while 166 pulmonary nodules were detected on 3D-VIBE sequence(detection rate 64.3%). The detection rate of STAR-VIBE sequence was significantly higher than that of 3D-VIBE sequence, and detection rate increased to 100% for those pulmonary nodules with diameter ≥6 mm on STARVIBE sequence. The subjective scores of STAR-VIBE sequence were significantly superior to 3D-VIBE sequence in displaying morphological features of pulmonary nodules(all P<0.05). Conclusions: Compared with 3D-VIBE sequence, STAR-VIBE sequence not only improves the detection rate of pulmonary nodules, but also provides more information on the morphological features of pulmonary nodules.
引文
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[2]Xu SC.Solitary pulmonary nodules:detection and characterization with medical imaging and guideline for further diagnosis and treatment.Int JMed Radiol,2011,34(2):141-145.许实成.孤立性肺结节的影像学诊断和处理.国际医学放射学杂志,2011,34(2):141-145.
[3]Zhang DX,Zhu SC,Guan S,et al.The value of MR intravoxel incoherent motion diffusion weighted imaging in T stage and differentiated degree of rectal adenocarcinoma.Chin J Magn Reson Imaging,2016,7(8):561-566.张单霞,朱绍成,管枢,等.MR体素内不相干运动扩散加权成像对直肠腺癌T分期及分化程度的应用价值研究.磁共振成像,2016,7(8):561-566.
[4]Sieren JC,Ohno Y,Koyama H,et al.Recent technological and application developments in computed tomography and magnetic resonance imaging for improved pulmonary nodule detection and lung cancer staging.J Magn Reson Imaging,2010,32(6):1353-1369.
[5]Schaarschmidt B,Buchbender C,Gomez B,et al.Thoracic staging of non-small-cell lung cancer using integrated(18)F-FDG PET/MRimaging:diagnostic value of different MR sequences.Eur J Nucl Med Mol Imaging,2015,42(8):1257-1267.
[6]Cieszanowski A,Lisowska A,Dabrowska M,et al.MR imaging of pulmonary nodules:detection rate and accuracy of size estimation in comparison to computed tomography.PLoS One,2016,11:e0156272.
[7]Chandarana H,Block KT,Winfeld MJ,et al.Free-breathing contrastenhanced T1-weighted gradient-echo imaging with radial k-space sampling for paediatric abdominopelvic MRI.Eur Radiol,2014,24(2):320-326.
[8]Yedururi S,Kang HS,Wei W,et al.Free-breathing radial volumetric interpolated breathhold examination vs breath-hold cartesian volumetric interpolated breath-hold examination magnetic resonance imaging of the liver at 1.5 T.World J Radiol,2016,8(7):707-715.