Dataset on renal tumor diameter assessment by multiple observers in normal-dose and low-dose CT

Jens Borgbjerg; Nis Elbrønd Larsen; Ivar Mjåland Salte; Niklas Revold Grønli; Elise Klæstrup; Anne Negård

doi:10.1016/j.dib.2023.109672

Dataset on renal tumor diameter assessment by multiple observers in normal-dose and low-dose CT

Data Brief. 2023 Oct 12:51:109672. doi: 10.1016/j.dib.2023.109672. eCollection 2023 Dec.

Authors

Jens Borgbjerg^{1

2}, Nis Elbrønd Larsen², Ivar Mjåland Salte¹, Niklas Revold Grønli¹, Elise Klæstrup², Anne Negård^{1

3}

Affiliations

¹ Department of Radiology, Akershus University Hospital, Sykehusveien 25, Nordbyhagen 1478, Norway.
² Department of Radiology, Aarhus University Hospital, Aarhus, Denmark.
³ Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Abstract

Computed tomography-based active surveillance is increasingly used to manage small renal tumors, regardless of patient age. However, there is an unmet need for decreasing radiation exposure while maintaining the necessary accuracy and reproducibility in radiographic measurements, allowing for detecting even minor changes in renal mass size. In this article, we present supplementary data from a multiobserver investigation. We explored the accuracy and reproducibility of low-dose CT (75% dose reduction) compared to normal-dose CT in assessing maximum axial renal tumor diameter. Open-access CT datasets from the 2019 Kidney and Kidney Tumor Segmentation Challenge were used. A web-based platform for assessing observer performance was used by six radiologist observers to obtain and provide data on tumor diameters and accompanying viewing settings, in addition to key images of each measurement and an interactive module for exploring diameter measurements. These data can serve as a baseline and inform future studies investigating and validating lower-dose CT protocols for active surveillance of small renal masses.

Keywords: Computed tomography; Observer agreement; Renal tumor; Tumor diameter.