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Changes in functional capacity of the contralateral liver lobe after unilobar 90Y-radioembolization – correlation with volumetric measurements (the RadioEmbolization, Volumetry, and Liver funcTion - REVoluTion study)

ABSTRACT: Interventions: Group 1: Patients receive a therapy with yttrium-90 radioembolisation, at first only the right hepatic lobe is treated. In case of the treatment of the whole liver, the therapy is performed sequentially starting with the right liver lobe and than with the left liver lobe 4 weeks later. Primary outcome(s): To determine the changes in liver function of the nonembolized lobe before and after unilobar radioembolization.LIMONTEST and liver function scintigraphy are performed before and after therapy. Study Design: Allocation: ; Masking: ; Control: ; Assignment: ; Study design purpose: treatment

DISEASE(S): Malignant Neoplasm Of Rectum,Patient Has Got Metastasis Of The Liver,Malignant Neoplasm Of Small Intestine,Malignant Neoplasm Of Rectosigmoid Junction,Malignant Neoplasm Of Colon

PROVIDER: 2430923 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:INTRODUCTION:Strong correlation has been demonstrated between tumor dose and response and between healthy liver dose and side effects. Individualized dosimetry is increasingly recommended in the current clinical routine. However, hepatic and tumor segmentations could be complex in some cases. The aim of this study is to assess the reproducibility of the tumoral and non-tumoral liver dosimetry in selective internal radiation therapy (SIRT). MATERIAL AND METHODS:Twenty-three patients with hepatocellular carcinoma (HCC) who underwent SIRT with glass microspheres were retrospectively included in the study. Tumor (TV) and total liver volumes (TLV), and mean absorbed doses in tumoral liver (TD) and non-tumoral liver (THLD) were determined on the 90Y PET/CT studies using Simplicit90YTM software, by three independent observers. Dosimetry datasets were obtained by a medical physicist helped by a nuclear medicine (NM) physician with 10 years of experience (A), by a NM physician with 4-year experience (B), and by a resident who first performed 10 dosimetry assessments as a training (C). Inter-observer agreement was evaluated using intra-class correlation coefficients (ICC), coefficients of variation (CV), Bland-Altman plots, and reproducibility coefficient (RDC). RESULTS:A strong agreement was observed between all three readers for estimating TLV (ICC 0.98) and THLD (ICC 0.97). Agreement was lower for TV delineation (ICC 0.94) and particularly for TD (ICC 0.73), especially for the highest values. Regarding TD, the CV (%) was 26.5, 26.9, and 20.2 between observers A and B, A and C, and B and C, respectively, and the RDC was 1.5. Regarding THLD, it was 8.5, 12.7, and 9.4, and the RDC was 1.3. CONCLUSION:Using a standardized methodology, and regardless of the different experiences of the observers, the estimation of THLD is highly reproducible. Although the reproducibility of the assessment of tumor irradiation is overall quite high, large variations may be observed in a limited number of patients.

Dataset Information

Changes in functional capacity of the contralateral liver lobe after unilobar 90Y-radioembolization – correlation with volumetric measurements (the RadioEmbolization, Volumetry, and Liver funcTion - REVoluTion study)

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