头部偏转90°俯卧投照用于锥形束乳腺CT检查

Prone position with 90°head turning in cone-beam breast CT examination

目的观察锥形束乳腺CT(CBBCT)检查中采用头部偏转90°俯卧位投照的意义。方法纳入60名接受CBBCT检查的女性志愿者(120侧乳),分为试验组和对照组(各30名60侧乳)。对试验组采用头部偏转90°俯卧位投照,对照组以头正位俯卧位投照。比较2组图像覆盖乳腺头侧、足侧、内侧、外侧及后侧范围,计算图像阳性率;根据11分数值疼痛评分量表进行疼痛评分;观察年龄、疼痛评分及图像阳性率之间的相关性。结果试验组图像阳性率明显高于对照组(P均<0.05)。2组疼痛评分无显著差异(P>0.05)。年龄与疼痛评分呈正相关(r=0.644,P<0.001),疼痛评分与图像阳性率呈负相关(r=-0.366,P=0.004),年龄与图像阳性率呈负相关(r=-0.313,P=0.015)。结论CBBCT检查中采用头部偏转90°俯卧位投照覆盖乳腺组织成像范围较传统投照体位更大,且不加重疼痛感。

Objective To observe the significance of prone position with 90°head turning in cone-beam breast CT(CBBCT)examination.Methods A total of 60 female volunteers(120 breasts)who underwent CBBCT were randomly divided into study group and control group,each including 30 subjects and 60 breasts.Subjects in study group underwent examination with the prone position with 90°head turning,while those in control group adopted examination with the prone position with head forward.The cephalic,pedal,medial,lateral and posterior areas of the breasts were compared between groups,and the positive rate of the images was calculated.The pain was scored according to the 11-point numerical rating scale.The correlations of age,pain score and image positive rate were evaluated.Results The positive rate of covering mammary gland in study group was significantly higher than that in control group(all P<0.05).There was no significant difference of pain scores between groups(P>0.05),while positive correlation was observed between age and pain score(r=0.644,P<0.001)and negative correlation was found between pain score and image positive rate(r=-0.366,P=0.004),also between age and image positive rate(r=-0.313,P=0.015).Conclusion The prone position with 90°head turning in CBBCT examination did not enhance pain while covered larger area of breasts than traditional position.