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Reliability of computed tomographic angiography 3‐D method of ruptured intracranial aneurysm measurements
Author(s) -
Wong George K.C.,
Leung Joyce H.Y.,
Yu Janice W.L.,
Woo Peter Y.M.,
Tan HaiBin,
Siu Deyond Y.W.,
Poon WaiSang
Publication year - 2013
Publication title -
surgical practice
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.109
H-Index - 10
eISSN - 1744-1633
pISSN - 1744-1625
DOI - 10.1111/j.1744-1633.2012.00627.x
Subject(s) - aneurysm , medicine , computed tomographic angiography , radiology , computed tomographic , reproducibility , subarachnoid hemorrhage , angiography , subarachnoid haemorrhage , nuclear medicine , reliability (semiconductor) , computed tomography , surgery , mathematics , statistics , physics , quantum mechanics , power (physics)
Aim With the availability of multidetector computed tomography, 3‐D display and measurements of cerebral aneurysms can be performed routinely. Although the 3‐D method is more intuitive, 3‐D measurements can be more operator dependent. Few data are available on interobserver variability and intraobserver reproducibility. We aimed to assess the interobserver and intraobserver reliability using both planar and 3‐D methods. Patients and Methods A total of 48 subarachnoid haemorrhage patients were recruited into the study. Results Aneurysm dimensions showed medium‐to‐large correlations among observers using the planar method, and large correlations for the 3‐D method. The average K endall's tau b coefficients among observers of aneurysm dimensions were significantly better for 3‐D methods compared to the planar method. Excellent correlations in planar and 3‐D aneurysm dimensions were found between repeated measurements ( K endall's tau b coefficients: 0.90–0.97; all P < 0.001). Conclusion High interobserver and intraobserver reliability was found for 3‐D assessments of aneurysm dimensions in computed tomographic angiography ( CTA ) for aneurysmal subarachnoid haemorrhage. Thus, the 3‐D method of aneurysm measurement can provide a reliable CTA assessment for cerebral aneurysm and data comparisons among different studies.