X-Ray computed tomography: Semiautomated volumetric analysis of late-stage lung tumors as a basis for response assessments Academic Article uri icon

Overview

MeSH Major

  • Organotechnetium Compounds
  • Parkinson Disease
  • Radiopharmaceuticals
  • Technetium
  • Tomography, Emission-Computed, Single-Photon
  • Tropanes

abstract

  • Background. This study presents a semiautomated approach for volumetric analysis of lung tumors and evaluates the feasibility of using volumes as an alternative to line lengths as a basis for response evaluation criteria in solid tumors (RECIST). The overall goal for the implementation was to accurately, precisely, and efficiently enable the analyses of lesions in the lung under the guidance of an operator. Methods. An anthropomorphic phantom with embedded model masses and 71 time points in 10 clinical cases with advanced lung cancer was analyzed using a semi-automated workflow. The implementation was done using the Cognition Network Technology. Results. Analysis of the phantom showed an average accuracy of 97%. The analyses of the clinical cases showed both intra- and interreader variabilities of approximately 5% on average with an upper 95% confidence interval of 14% and 19%, respectively. Compared to line lengths, the use of volumes clearly shows enhanced sensitivity with respect to determining response to therapy. Conclusions. It is feasible to perform volumetric analysis efficiently with high accuracy and low variability, even in patients with late-stage cancer who have complex lesions.

publication date

  • September 16, 2011

Research

keywords

  • Academic Article

Identity

Language

  • eng

PubMed Central ID

  • PMC3124287

Digital Object Identifier (DOI)

  • 10.1155/2011/361589

PubMed ID

  • 21747819

Additional Document Info

start page

  • 361589

volume

  • 2011