In:
Journal of Neuro-Oncology, Springer Science and Business Media LLC
Abstract:
This retrospective study aimed to analyse the correlation between somatostatin receptor subtypes (SSTR 1–5) and maximum standardized uptake value (SUV max ) in meningioma patients using Gallium-68 DOTA-D-Phe1-Tyr3-octreotide Positron Emission Tomography ([68Ga]Ga-DOTATOC PET). Secondly, we developed a radiomic model based on apparent diffusion coefficient (ADC) maps derived from diffusion weighted magnetic resonance images (DWI MRI) to reproduce SUV max . Method The study included 51 patients who underwent MRI and [68Ga]Ga-DOTATOC PET before meningioma surgery. SUV max values were quantified from PET images and tumour areas were segmented on post-contrast T1-weighted MRI and mapped to ADC maps. A total of 1940 radiomic features were extracted from the tumour area on each ADC map. A random forest regression model was trained to predict SUV max and the model’s performance was evaluated using repeated nested cross-validation. The expression of SSTR subtypes was quantified in 18 surgical specimens and compared to SUV max values. Results The random forest regression model successfully predicted SUV max values with a significant correlation observed in all 100 repeats (p 〈 0.05). The mean Pearson’s r was 0.42 ± 0.07 SD, and the root mean square error (RMSE) was 28.46 ± 0.16. SSTR subtypes 2A, 2B, and 5 showed significant correlations with SUV max values (p 〈 0.001, R2 = 0.669; p = 0.001, R2 = 0.393; and p = 0.012, R2 = 0.235, respectively). Conclusion SSTR subtypes 2A, 2B, and 5 correlated significantly with SUV max in meningioma patients. The developed radiomic model based on ADC maps effectively reproduces SUV max using [68Ga]Ga-DOTATOC PET.
Type of Medium:
Online Resource
ISSN:
0167-594X
,
1573-7373
DOI:
10.1007/s11060-023-04414-3
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2023
detail.hit.zdb_id:
2007293-4
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