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Comparison of One-Dimensional and Volumetric Computed Tomography Measurements of Injected-Water Phantoms

Published

Author(s)

Zachary H. Levine, Huaiyu H. Chen-Mayer, Adele P. Peskin, Adam L. Pintar

Abstract

The goal of this study was to compare volumetric analysis in computed tomography (CT) with the length measurement prescribed by the Response Evaluation Criteria in Solid Tumors (RECIST) for a system with known mass and unknown shape. We injected 2 mL to 4 mL of water into vials of sodium polyacrylate and into disposable diapers. Volume measurements of the sodium polyacrylate powder were able to predict both mass and proportional changes in mass within a 95 % prediction interval of width 12 % and 16 %, respectively. The corresponding figures for RECIST were 102 % and 82 %.
Citation
Journal of Research (NIST JRES) -
Volume
122

Keywords

CT phantom, RECIST, volumetrics.
Created September 20, 2017, Updated January 27, 2020