OBJECTIVES: The aim of this study was to assess the reproducibility of different measurement methods and define the most workable technique for measuring head and @entity135 , to determine the best method for evaluating @entity5 growth. The evaluation of @entity5 growth is vital for a 'wait-and-scan' policy, a management strategy that became increasingly important. STUDY DESIGN: Method comparison study. SETTING AND @entity1 : Thirty @entity5 , including carotid body, vagal body, jugulotympanic @entity5 and @entity5 , were measured in duplicate, using linear dimensions, manual area tracing and an automated segmentation method. MAIN OUTCOME MEASURES: Reproducibility was assessed using the Bland-Altman method. RESULTS: The smallest detectable difference using the linear dimension method was 11% for carotid body and 27% for @entity5 , compared with 17% and 20% for the manual area tracing method. Due to the irregular shape of @entity1823 in the temporal bone and conglomerates, the manual area tracing method showed better results in these @entity5 (26% and 8% versus 54% and 47%). The linear dimension method was significantly faster (median 4.27 versus 18.46 minutes, P < 0.001). The automatic segmentation method yielded smallest detectable differences between 39% and 75%, and although fast (2.19    1.49 minutes), it failed technically. CONCLUSIONS: Due to a relatively good reproducibility, fast and easy application, we found the linear dimension method to be the most pragmatic approach for evaluation of growth of @entity10470 . For jugulotympanic @entity5 , the preferred method is manual area tracing. However, volumetric changes of these @entity5 may be of less clinical importance than changes in relation to surrounding anatomical structures.

Measurement of head and XXXX : is volumetric analysis worth the effort? A method comparison study.

@entity1 :: ('9606', 'Species') :: ['PARTICIPANTS'] @entity135 :: ('MESH:D006258', 'Disease') :: ['neck paragangliomas'] @entity5 :: ('MESH:D009369', 'Disease') :: ['vagal body tumours', 'conglomerates of multiple tumours', 'tumours', 'tumour'] @entity1823 :: ('MESH:D010235', 'Disease') :: ['paragangliomas'] @entity10470 :: ('MESH:D002345', 'Disease') :: ['carotid and vagal body paragangliomas']
@entity135 :: (MESH:D006258,Disease) :: ['neck paragangliomas']
