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- Title
Accuracy of automated volumetry of pulmonary nodules across different multislice CT scanners.
- Authors
Das, Marco; Ley-Zaporozhan, Julia; Gietema, H. A.; Czech, Andre; Mühlenbruch, Georg; Mahnken, Andreas H.; Katoh, Markus; Bakai, Annemarie; Salganicoff, Marcos; Diederich, Stefan; Prokop, Mathias; Kauczor, Hans-Ulrich; Günther, Rolf W.; Wildberger, Joachim E.; Mühlenbruch, Georg; Günther, Rolf W
- Abstract
The purpose of this study was to compare the accuracy of an automated volumetry software for phantom pulmonary nodules across various 16-slice multislice spiral CT (MSCT) scanners from different vendors. A lung phantom containing five different nodule categories (intraparenchymal, around a vessel, vessel attached, pleural, and attached to the pleura), with each category comprised of 7-9 nodules (total, n = 40) of varying sizes (diameter 3-10 mm; volume 6.62 mm(3)-525 mm(3)), was scanned with four different 16-slice MSCT scanners (Siemens, GE, Philips, Toshiba). Routine and low-dose chest protocols with thin and thick collimations were applied. The data from all scanners were used for further analysis using a dedicated prototype volumetry software. Absolute percentage volume errors (APE) were calculated and compared. The mean APE for all nodules was 8.4% (+/-7.7%) for data acquired with the 16-slice Siemens scanner, 14.3% (+/-11.1%) for the GE scanner, 9.7% (+/-9.6%) for the Philips scanner and 7.5% (+/-7.2%) for the Toshiba scanner, respectively. The lowest APEs were found within the diameter size range of 5-10 mm and volumes >66 mm(3). Nodule volumetry is accurate with a reasonable volume error in data from different scanner vendors. This may have an important impact for intraindividual follow-up studies.
- Subjects
VOLUME (Cubic content); TOMOGRAPHY; SCANNING systems; MEDICAL imaging systems; ERROR analysis in mathematics; NODULAR disease; DIAGNOSTIC imaging equipment; COMPUTED tomography; ANALYSIS of variance; COMPARATIVE studies; COMPUTER software; DIAGNOSTIC imaging; INFORMATION science; RESEARCH methodology; MEDICAL cooperation; COMPUTERS in medicine; IMAGING phantoms; RESEARCH; RESEARCH evaluation; EVALUATION research; SPIRAL computed tomography; EQUIPMENT &; supplies; SOLITARY pulmonary nodule
- Publication
European Radiology, 2007, Vol 17, Issue 8, p1979
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-006-0562-1