Volumetric evaluation of hepatic tumors: multi-vendor, multi-reader liver phantom study.
Purpose: To compare liver lesion volume measurement on multiple 3D software platforms using a liver phantom. Methods: An anthropomorphic phantom constructed with ten liver lesions of varying size, attenuation, and shape with known volume and long axis measurement was scanned (120 kVp, 80-440 smart m...
| Publicado en: | Abdominal Imaging Vol. 39; no. 3; pp. 488 - 497 |
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| Autores principales: | , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Jun2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103825776&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103825776 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09428925 O52 jtl: Abdominal Imaging issn: 09428925 maglogo: N pubinfo: dt: Jun2014 vid: 39 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 103825776 NLM24492936 2012600972 10.1007/s00261-014-0079-z NLM24492936 103825776 ppf: 488 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Volumetric evaluation of hepatic tumors: multi-vendor, multi-reader liver phantom study. aug: au: Lubner, Meghan G Dustin Pooler, B Del Rio, Alejandro Munoz Durkee, Ben Pickhardt, Perry J affil: Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Science Center, 600 Highland Ave., Madison, WI, 53792-3252, USA, mlubner@uwhealth.org. sug: subj: Imaging, Three-Dimensional Methods Liver Neoplasms Pathology Liver Neoplasms Radiography Radiographic Image Interpretation, Computer-Assisted Methods Tomography, X-Ray Computed Methods Body Weights and Measures Human Liver Radiography Observer Bias Phantoms, Imaging Reproducibility of Results Software ab: Purpose: To compare liver lesion volume measurement on multiple 3D software platforms using a liver phantom. Methods: An anthropomorphic phantom constructed with ten liver lesions of varying size, attenuation, and shape with known volume and long axis measurement was scanned (120 kVp, 80-440 smart mA, NI 12). DICOM data were uploaded to five commercially available 3D visualization systems and manual tumor volume was obtained by three-independent readers. Accuracy and reproducibility of linear and volume measurements were compared. The two most promising systems were then compared with an additional prototype system by two readers using both manual and semi-automated measurement with similar comparison between linear and volume measures. Measurements were performed on 5- and 1.25-mm data sets. Inter- and intra-observer variability was also assessed. Results: Overall mean % volume error on the five commercially available software systems (averaging all ten liver lesions among all three readers) was 8.0% ± 7.5%, 13.7% ± 11.2%, 14.2% ± 15.2%, 16.4% ± 14.8 %, and 16.9% ± 13.8%, varying almost twofold across vendor. Moderate inter-observer variability was present. Volume measurement was slightly more accurate than linear measurement, but linear measurement was more reproducible across readers and systems. On the two "best" systems, the manual measurement method was more accurate than the automated method (p = 0.001). The prototype system demonstrated superior semi-automated assessment, with a mean % volume error of 5.3% ± 4.1% (vs. 17.8% ± 11.1% and 31.5% ± 19.7%, p < 0.001), with improved inter- and intra-observer variability. Conclusions: Accuracy and reproducibility of volume assessment of liver lesions varies significantly by vendor, which has important implications for clinical use. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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