| 低剂量CT在颅脑-颌面部外伤联合扫描中的应用 |
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| 引用本文： | 付传明,王开华,陈义加,陈伦刚,龚晓虹,陈文,熊寅,吴文强. 低剂量CT在颅脑-颌面部外伤联合扫描中的应用[J]. 临床放射学杂志, 2010, 29(4) |
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| 作者姓名： | 付传明 王开华 陈义加 陈伦刚 龚晓虹 陈文 熊寅 吴文强 |
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| 作者单位： | 郧阳医学院附属太和医院影像科,湖北省十堰市,442000 |
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| 摘 要： | 目的前瞻性探讨16排螺旋CT颅脑-颌面部联合扫描,不同扫描参数在外伤中的应用效果并降低辐射剂量。资料与方法60例颅脑-颌面部外伤患者随机分为A、B、C3组(20例/组),在不同扫描参数下行多排螺旋(MSCT)检查。A组:扫描层厚10mm,重建层厚1.25mm和5mm;B组:扫描层厚5mm,重建层厚0.625mm;A、B两组均采用轴位扫描、16通道、2i、200mAs;C组:对照组(常规颅脑+颌面部扫描);A、B、C3组其他扫描参数相同。分别记录扫描时间(T)、CT剂量指数(CTDIvol)、Z轴范围(L)、剂量长度乘积(DLP)。由2位有经验的CT技师采取双盲法从图像噪声(IN)、对比-噪声比(CNR)两方面分析轴位、重建图像及多平面重组(MPR)、容积再现(VR)图像质量两两比较。结果A、B、C3组扫描时间(T)分别为12s、22.8s、18.53s,有效剂量(ED)分别为2.05mSv、2.19mSv、2.61mSv;A/C、B/C、A/B的CTDIvol值分别是48.34%、54.40%、88.85%;A/C、B/C、A/B每两组之间的DLP值两两比较差异均具有统计学意义(P值均<0.01),A、B、C...
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| 关 键 词： | 体层摄影术 X线计算机 外伤 颅脑-颌面部 辐射剂量 |
The Application of Lower Radiation Dosage CT Scan in Brain and Jaw Trauma |
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| FU Chuanming,WANG Kaihua,CHEN Yijia,et al.. The Application of Lower Radiation Dosage CT Scan in Brain and Jaw Trauma[J]. Journal of Clinical Radiology, 2010, 29(4) |
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| Authors: | FU Chuanming WANG Kaihua CHEN Yijia et al. |
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| Affiliation: | FU Chuanming,WANG Kaihua,CHEN Yijia,et al.Department of Imaging,Affiliated Taihe Hospital,Yunyang Medical Colledge,Shiyan,Hubei Province 442000,P.R.China |
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| Abstract: | Objective To discuss the application of 16 row spiral CT scan in brain and jaw with different scan parameter,and compare the image quality and reduce radiation dosage.Materials and Methods 60 patients random divided into 3 groups (20 cases per group) were scanned with different parameters.Group A:scan thickness 10 mm,reconstruct thickness 1.25 mm and 5 mm,group B,scan thickness 5 mm,reconstruct thickness 0.625 mm,group A and group B had the same axis scan of 16 gates,2i,200 mAs,group C:the contrast group,ro... |
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| Keywords: | Tomography X-ray computed Trauma Brain and jowl Radiation dosage |
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