Inadequacy of manual measurements compared to automated CT volumetry in assessment of treatment response of pulmonary metastases using RECIST criteria.

Marten, K; Auer, F; Schmidt, S; Kohl, G; Rummeny, EJ; Engelke, C

Benutzer: Gast

journal article

Dokumenttyp:: journal article
Autor(en):: Marten, K; Auer, F; Schmidt, S; Kohl, G; Rummeny, EJ; Engelke, C
Titel:: Inadequacy of manual measurements compared to automated CT volumetry in assessment of treatment response of pulmonary metastases using RECIST criteria.
Abstract:: The purpose of this study was to compare relative values of manual unidimensional measurements (MD) and automated volumetry (AV) for longitudinal treatment response assessment in patients with pulmonary metastases. Fifty consecutive patients with pulmonary metastases and repeat chest multidetector-row CT (median interval=2 months) were independently assessed by two radiologists for treatment response using Response Evaluation Criteria In Solid Tumours (RECIST). Statistics included relative measurement errors (RME), intra-/interobserver correlations, limits of agreement (95% LoA), and kappa. A total of 202 metastases (median volume=182.22 mm(3); range=3.16-5,195.13 mm(3)) were evaluated. RMEs were significantly higher for MD than for AV (intraobserver RME=2.34-3.73% and 0.15-0.22% for MD and AV respectively; P<0.05. Interobserver RME=3.53-3.76% and 0.22-0.29% for MD and AV respectively; P<0.05). Overall correlation was significantly better for AV than for MD (P<0.05). Intraobserver 95% LoAs were -1.85 to 1.75 mm for MD and -11.28 to 9.84 mm(3) for AV. The interobserver 95% LoA were -1.46 to 1.92 mm for MD and -11.17 to 9.33 mm(3) for AV. There was total intra-/interobserver agreement on response using AV (kappa=1). MD intra- and interobserver agreements were 0.73-0.84 and 0.77-0.80 respectively. Of the 200 MD response ratings, 28 (14/50 patients) were discordant. Agreement using MD dropped significantly from total remission to progressive disease (P<0.05). We therefore conclude that AV allows for better reproducibility of response evaluation in pulmonary metastases and should be preferred to MD in these patients.
Zeitschriftentitel:: Eur Radiol
Jahr:: 2006
Band / Volume:: 16
Heft / Issue:: 4
Seitenangaben Beitrag:: 781-90
Sprache:: eng
PubMed:: http://view.ncbi.nlm.nih.gov/pubmed/16331462
Print-ISSN:: 0938-7994
TUM Einrichtung:: Institut für Radiologie
BibTeX

Vorkommen:

mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Departments Clinical Medicine Institut für Diagnostische und Interventionelle Radiologie (Prof. Makowski)Institut für Radiologie und Nuklearmedizin 2006

mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Ehemalige Einrichtungen Lehrstuhl für Röntgendiagnostik (Prof. Rummeny)