5.0 T磁共振呼吸触发和单次屏气两种胰胆管成像序列价值比较  

Comparison of respiratory-triggered and breath-holding sequences on 5.0 T magnetic resonancecholangiopancreatography

作　　者：胡翀 王朋[1] 何野 李少朋 音大为 纵然 邓克学 HU Chong;WANG Peng;HE Ye;LI Shaopeng;YIN Dawei;ZONG Ran;DENG Kexue(Department of Radiology,the First Affiliated Hospital of USTC,Southern District of Anhui Provincial Hospital,Hefei 230032,China)

机构地区：[1]中国科学技术大学附属第一医院(安徽省立医院)南区影像中心,合肥230032

出　　处：《磁共振成像》2024年第11期130-135,152,共7页Chinese Journal of Magnetic Resonance Imaging

摘　　要：目的对比5.0 T超高场强磁共振中呼吸触发三维磁共振胰胆管成像(respiratory-triggered three-dimensional magnetic resonancecholangiopancreatography,RT-3DMRCP)和单次屏气三维磁共振胰胆管成像(breath-holdingthree-dimensional magnetic resonance cholangiopancreatography,BH-3D MRCP)的成像效果。材料与方法回顾性分析50例(男23例,女27例)行5.0 T RT-3D MRCP和BH-3D MRCP患者检查结果。对所有患者的RT-3D MRCP和BH-3D MRCP图像进行主观评分及客观数据收集比较。主观评分包括对总体图像质量、图像伪影、胆总管、左肝总管、右肝总管、右前支、右后支、第2节支、第3节支、胰管及胆囊管进行4分制评分,客观数据包括图像信噪比(signal to noise ratio,SNR)、对比度(contrast ratio,CR)、对比噪声比(contrast to noise ratio,CNR)。采用配对t检验及Wilcoxon符号秩检验进行组间分析。采用Spearman相关分析方法分析年龄、性别、腹痛症状及身体质量指数(body mass index,BMI)与主观评分之间的相关性。结果RT-3D MRCP组SNR、CR、CNR均大于BH-3D MRCP组(P均<0.001);主观评分RT-3D MRCP在总体图像质量、图像伪影、胆总管、左肝总管、右肝总管、右前支、右后支、第2节支、第3节支、胰管及胆囊管评分也优于BH-3D MRCP序列(P均<0.01);BMI与RT-3D MRCP图像伪影评分呈负相关(r=-0.330,P=0.019);有腹痛患者RT-3D MRCP总体图像质量及伪影评分低于无腹痛患者(P=0.011、0.013)。结论5.0 T场强下,对于一般患者,RT-3D MRCP成像效果优于BH-3D MRCP,但对于有腹痛症状及BMI过大患者则可优先考虑BH-3D MRCP序列扫描。Objective:To compare the imaging effects of respiratory-triggered three-dimensional magnetic resonance cholangiopancreatography(RT-3D MRCP)and single breath-holding three-dimensional magnetic resonance cholangiopancreatography(BH-3D MRCP)in 5.0 T ultra-high field magnetic resonance imaging.Materials and Methods:The results of 50 patients(23 males and 27 females)who underwent 5.0 T RT-3D MRCP and BH-3D MRCP were retrospectively analyzed.RT-3D MRCP and BH-3D MRCP images of all patients were subjectively scored and compared with objective data collection.The subjective score included the overall image quality,image artifacts,common bile duct,left hepatic duct,right hepatic duct,right anterior branch,right posterior branch,second and third branches,pancreatic duct and gallbladder duct.The objective data included image signal-to-noise ratio(SNR),contrast ratio(CR)and contrast-to-noise ratio(CNR).The paired t test and Wilcoxon signed rank test were used for intergroup analysis.Spearman correlation analysis was used to analyze the correlation between age,gender,abdominal pain symptoms,body mass index(BMI)and subjective scores.Results:SNR,CR and CNR in RT-3D MRCP group were higher than those in BH-3D MRCP group(P<0.001).RT-3D MRCP was also superior to BH-3D MRCP sequences in overall image quality,image artifacts,common bile duct,left hepatic duct,right hepatic duct,right anterior branch,right posterior branch,second and third branch,pancreatic duct and gallbladder duct by subjective score(P<0.01).BMI was negatively correlated with RT-3D MRCP image artifacts(r=−0.330,P=0.019).The overall image quality and image artifacts score of RT-3D MRCP in patients with abdominal pain were lower than those without abdominal pain(P=0.011,0.013).Conclusions:At 5.0 T ultra-high field magnetic resonance imaging,RT-3D MRCP is better than BH-3D MRCP for general patients but BH-3D MRCP sequence can be given priority for patients with abdominal pain and excessive BMI.

关 键 词：磁共振胰胆管成像 磁共振成像 呼吸触发 单次屏气 图像质量评价 

分 类 号：R445.2[医药卫生—影像医学与核医学]