Volumetric Assessment of Pulmonary Nodules with ECG-Gated MDCT
作者： Daniel T. Boll , Robert C. Gilkeson , Thorsten R. Fleiter , Kristine A. Blackham , Jeffrey L. Duerk
DOI: 10.2214/AJR.183.5.1831217
关键词:
摘要: OBJECTIVE. The objective of our study was to assess physiologic lung deformation and compression originating from cardiovascular motion their subsequent impact on determining the volume small pulmonary nodules throughout cardiac cycle ECG-gated MDCT.SUBJECTS AND METHODS. Seventy-three noncalcified were identified in 30 patients who underwent MDCT. each nodule assessed using computer-aided automatic segmentation algorithms, assessment repeated three times. To ensure validity subtle changes that detected, we determined signal attenuation phantom data sets patient without temporal or spatial differentiation. Subsequently, assigned segments, correlated phases, nodular location, mean size. Statistical multivariate tests performed evaluate significant patterns.RESULTS. Th...
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