Detection of pulmonary metastases with pathological correlation: effect of breathing on the accuracy of spiral CT

被引:12
作者
Coakley, FV
Cohen, MD
Waters, DJ
Davis, MM
Karmazyn, B
Gonin, R
Hanna, MP
机构
[1] JAMES WHITCOMB RILEY HOSP CHILDREN,DEPT RADIOL,INDIANAPOLIS,IN 46202
[2] PURDUE UNIV,DEPT VET CLIN SCI,W LAFAYETTE,IN 47907
[3] JAMES WHITCOMB RILEY HOSP CHILDREN,DEPT PATHOL,INDIANAPOLIS,IN 46202
[4] JAMES WHITCOMB RILEY HOSP CHILDREN,DEPT MED,DIV BIOSTAT,INDIANAPOLIS,IN 46202
关键词
D O I
10.1007/s002470050185
中图分类号
R72 [儿科学];
学科分类号
100202 ;
摘要
Background. CT of the chest for suspected pulmonary metastases in adults is generally performed using a breath-hold technique. The results may not be applicable to young children in whom breath-holding may be impossible. Objective. Determine the effect of breathing on the accuracy of pulmonary metastasis detection by spiral CT (SCT). Materials and methods. Prior to euthanasia four anesthetized dogs with metastatic osteosarcoma underwent SCT with a collimation of 5 mm and a pitch of 2, during both induced breath-hold and normal quiet breathing. Images were reconstructed as contiguous 5-mm slices. Macroscopically evident metastases were noted at postmortem. Hardcopy SCT images were reviewed by ten radiologists, each of whom circled all suspected metastases. SCT images were compared with postmortem results to determine true and false positives. Results. The pathologist identified 132 macroscopically evident pulmonary metastases. For metastasis detection, there was no significant difference between breath-hold SCT and breathing SCT. Conclusion. In our animal model, SCT can be performed during normal resting breathing without significant loss of accuracy in the detection of pulmonary metastases.
引用
收藏
页码:576 / 579
页数:4
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