Sandrasegaran K, Rydberg J, Tann M, Hawes D R, Kopecky K K, Maglinte D D
Department of Radiology, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
Clin Radiol. 2007 Apr;62(4):340-7. doi: 10.1016/j.crad.2006.09.030.
To evaluate the usefulness of coronal and sagittal reformations from isotropic abdomino-pelvic computed tomography (CT) examinations.
Fifty consecutive abdomino-pelvic CT examinations were reconstructed into two sets of axial source images: 0.9 mm section width with 0.45 mm reconstruction interval (isotropic) and 4 mm section width with 3 mm reconstruction interval. The isotropic dataset was reformatted into coronal and sagittal stacks with 4 mm section widths. Three readers independently reviewed the three image sets with 4 mm section widths. The coronal and sagittal reformations were compared with the axial images, in the same sitting, for depiction of lesions in various abdominal organs.
There was better visualization of lesions in the liver, kidneys, mesentery, lumbar spine, major abdominal vessels, urinary bladder, diaphragm and hips on the coronal reformations compared with source axial images (p<0.05). Sagittal reformations scored better than axial source images for showing lesions in the liver, thoracic spine, abdominal vessels, uterus, urinary bladder, diaphragm and hips (p<0.05). The coronal and sagittal series showed significant additional information in 23 and 17% of patients, respectively.
Radiologists should consider the routine review of at least one additional plane to the axial series in the interpretation of abdomino-pelvic CT studies.
评估来自各向同性腹盆部计算机断层扫描（CT）检查的冠状位和矢状位重建的效用。
连续50例腹盆部CT检查被重建为两组轴向源图像：层厚0.9 mm、重建间隔0.45 mm（各向同性）以及层厚4 mm、重建间隔3 mm。将各向同性数据集重新格式化为层厚4 mm的冠状位和矢状位图像堆栈。三位阅片者独立审阅这三组层厚4 mm的图像集。在同一时段，将冠状位和矢状位重建图像与轴向图像进行比较，以观察各种腹部器官中的病变。
与源轴向图像相比，冠状位重建图像能更好地显示肝脏、肾脏、肠系膜、腰椎、腹部主要血管、膀胱、膈肌和髋部的病变（p<0.05）。矢状位重建图像在显示肝脏、胸椎、腹部血管、子宫、膀胱、膈肌和髋部的病变方面得分高于源轴向图像（p<0.05）。冠状位和矢状位图像系列分别在23%和17%的患者中显示出显著的额外信息。
在解读腹盆部CT研究时，放射科医生应考虑在轴向图像系列的基础上常规至少再查看一个额外的平面。
