FORCE dual‑energy CT in pathological grading of clear cell renal cell carcinoma

Zhang,Chunling; Wang,Ning; Su,Xinyou; Li,Kun; Yu,Dexin; Ouyang,Aimei

doi:10.3892/ol.2019.11022

FORCE dual‑energy CT in pathological grading of clear cell renal cell carcinoma

Authors:
- Chunling Zhang
- Ning Wang
- Xinyou Su
- Kun Li
- Dexin Yu
- Aimei Ouyang
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Affiliations: Department of Radiology, Jinan Central Hospital, Shandong University, Jinan, Shandong 250013, P.R. China, Department of Oncology, Jinan Central Hospital, Shandong University, Jinan, Shandong 250013, P.R. China, Department of Radiology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
Published online on: October 30, 2019 https://doi.org/10.3892/ol.2019.11022
Pages: 6405-6412
Copyright: © Zhang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the present study was to examine the value of FORCE dual‑energy CT in grading the clear cell renal cell carcinoma (ccRCC). A total of 35 cases of ccRCC were included. Hematoxylin and eosin staining was performed, and the cases were divided into low‑ (Fuhrman I‑II) and high‑grade (Fuhrman III‑IV) groups. FORCE dual‑energy CT parameters, including virtual network computing CT value (VNCV), iodine overlay value (IOV), mixed energy CT value (MEV), iodine concentration (IC), normalized iodine concentration (NIC), NIC based on aorta (NICA), NIC based on cortex (NICC) and NIC based on medulla (NICM), were analyzed and compared. Receiver operating characteristic analysis was also performed. There were significant differences in the arterial phase IOV, MEV and IC, and the venous phase IOV and IC between the low‑ and high‑grade groups. No significant differences were observed in VNCV and MEV between the low ‑and high‑grade groups in the venous phase. Significant differences were observed in the NICA and NICC between these two groups, however no difference was observed in NICM. There were significant differences in the tumor CT values for the arterial phase at the 40, 60, 80 and 100 kiloelectron volt (keV) between the low‑ and high‑grade groups, while no significant differences were observed at the 120‑140 keV levels. The k‑slope for the low‑grade group was significantly higher than the high‑grade group. In addition, the area under curve for the arterial phase IOV, arterial phase MEV, arterial phase IC, aortic NIC, cortical NIC, venous phase IOV, venous phase IC and curve slope K of mono‑energy CT value suggested high value in diagnosis of low‑ and high‑grade ccRCC cases.

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