摘要
目的:对比分析磁共振常规视野扩散加权成像(f-FOV DWI)与小视野扩散加权成像(r-FOV DWI)在宫颈癌诊断中的应用价值。方法:回顾性搜集本院2021年3月至2022年2月明确诊断为宫颈癌的患者,选取病理活检、磁共振检查均为宫颈癌阳性的患者140例,所有患者在进行手术治疗之前均进行f-FOV DWI和r-FOV DWI检查,对检查结果进行主观及客观评价。主观评价由2位影像科医师共同阅片,然后从解剖细节显示、磁敏感伪影、几何变形和总体诊断信心等四方面进行评分,分数越高代表成像效果越好。客观评价由2位影像科医师对2种序列b值=800 s/mm^(2)的相关图像进行所需值测量,比较两者之间的信噪比(SNR)、对比噪声比(CNR)差异;测量ADC值,对比两种序列的ADC值在不同病理分级、临床分期中的差异。结果:主观评分结果显示,r-FOV DWI序列在解剖细节显示、磁敏感伪影、几何变形和总体诊断信心等四项评分(分别为2.86±0.82、2.76±0.77、2.98±0.78、2.87±0.88)均明显高于f-FOV DWI序列(分别为2.06±0.76、1.98±0.59、2.09±0.67、2.21±0.79),差异均有统计学意义(P均<0.05)。在客观评价方面,f-FOV DWI与r-FOV DWI的SNR值(分别为25.46±11.01、26.58±10.89)、CNR值(20.21±11.36、20.03±7.31)差异均无统计学意义(P>0.05);r-FOV DWI与f-FOV DWI在宫颈癌不同病理分型、临床分期之间的ADC值除Ⅲ期外差异均有统计学意义(P<0.05),r-FOV DWI测得的ADC值较f-FOV DWI更低。结论:r-FOV DWI较f-FOV DWI在宫颈癌的诊断过程中更具优势,图像更清晰,可以更好地辅助临床诊断。
Objective:To compare the value of full field of view diffusion weighted imaging(f-FOV DWI)with reduced field of view diffusion weighted imaging(r-FOV DWI)in diagnosis of cervical cancer.Methods:A retrospective analysis was conducted in 140 patients diagnosed with cervical cancer by pathology and magnetic resonance imaging(MRI)from March 2021 to February 2022.All patients underwent both f-FOV DWI and r-FOV DWI examinations before surgical treatment,and the results were subjectively and objectively evaluated.Subjective evaluation performed by two radiologists included four aspects:anatomical detail display,magnetic sensitivity artifacts,geometric deformation,and overall diagnostic confidence,with higher scores indicating better imaging quality.Objective evaluation was conducted by measuring the required values of two sequences with a b-value of 800s/mm^(2),comparing the signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)in two sequences,and measuring the apparent diffusion coefficient(ADC)values to compare the differences in two sequences in different pathological grades and clinical stages.Results:Subjective evaluation scores showed that there were significantly higher scores of the r-FOV DWI sequence(2.86±0.82,2.76±0.77,2.98±0.78,2.87±0.88)than that of f-FOV DWI sequence(2.06±0.76,1.98±0.59,2.09±0.67,2.21±0.79)in terms of anatomical detail display,magnetic sensitivity artifacts,geometric deformation with statistical significance(P<0.05).In terms of objective evaluation,there were no significant differences in SNR(25.46±11.01,26.58±10.89)and CNR(20.21±11.36,20.03±7.31)between f-FOV DWI and r-FOV DWI(P>0.05).However,the ADC values of r-FOV DWI were significantly lower than that of f-FOV DWI in different pathological grades and clinical stages of cervical cancer(P<0.05),except for stageⅢ.Conclusion:There are advantages for r-FOV DWI in providing clearer images and better assistance in clinical diagnosis than f-FOV DWI in diagnosis of cervical cancer.
作者
何雅坤
易思琪
王俊
林礼波
彭育标
王闽
周鹏
任静
HE Ya-kun;YI Si-qi;WANG Jun(Department of Radiology,Sichuan Cancer Hospital,Chengdu 610041,China)
出处
《放射学实践》
CSCD
北大核心
2023年第9期1184-1188,共5页
Radiologic Practice
基金
四川省卫生和计划生育委员会科研课题(16PJ507)。
关键词
宫颈癌
磁共振成像
扩散加权成像
小视野扩散加权成像
常规视野扩散加权成像
Cervical cancer
Magnetic resonance imaging
Diffusion weighted imaging
Reduced field of view diffusion weighted imaging
Full field of view diffusion weighted imaging
