Small pulmonary nodules: volume measurement at chest CT--phantom study
Related Experiment Video
Updated: Sep 20, 2026
A 3D Digital Model for the Diagnosis and Treatment of Pulmonary Nodules
Published on: May 19, 2023
Jane P Ko1, Henry Rusinek, Erika L Jacobs
1Department of Radiology, Section of Thoracic Imaging, New York University Medical Center, 560 1st Ave, New York, NY 10016, USA. jane.ko@med.nyu.edu
Abstract:
Three-dimensional methods for quantifying pulmonary nodule volume at computed tomography (CT) and the effect of imaging variables were studied by using a realistic phantom. Two fixed-threshold methods, a partial-volume method (PVM) and a variable method, were used to calculate volumes of 40 plastic nodules (largest dimension, <5 mm: 20 nodules with solid attenuation and 20 with ground-glass attenuation) of known volume. Tube current times (20 and 120 mAs), reconstruction algorithms (high and low frequency), and nodule characteristics were studied. Higher precision was associated with use of a PVM with predetermined pure nodule attenuation, high-frequency algorithm, and diagnostic CT technique (120 mAs). A PVM is promising for volume quantification and follow-up of nodules.
