Performance of automatic image segmentation algorithms for calculating total lesion glycolysis for early response monitoring in non-small cell lung cancer patients during concomitant chemoradiotherapy.
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Date
2016-06ICR Author
Author
Grootjans, W
Usmanij, EA
Oyen, WJG
van der Heijden, EHFM
Visser, EP
Visvikis, D
Hatt, M
Bussink, J
de Geus-Oei, L-F
Type
Journal Article
Metadata
Show full item recordAbstract
Background and purpose This study evaluated the use of total lesion glycolysis (TLG) determined by different automatic segmentation algorithms, for early response monitoring in non-small cell lung cancer (NSCLC) patients during concomitant chemoradiotherapy.Materials and methods Twenty-seven patients with locally advanced NSCLC treated with concomitant chemoradiotherapy underwent (18)F-fluorodeoxyglucose (FDG) PET/CT imaging before and in the second week of treatment. Segmentation of the primary tumours and lymph nodes was performed using fixed threshold segmentation at (i) 40% SUVmax (T40), (ii) 50% SUVmax (T50), (iii) relative-threshold-level (RTL), (iv) signal-to-background ratio (SBR), and (v) fuzzy locally adaptive Bayesian (FLAB) segmentation. Association of primary tumour TLG (TLGT), lymph node TLG (TLGLN), summed TLG (TLGS=TLGT+TLGLN), and relative TLG decrease (ΔTLG) with overall-survival (OS) and progression-free survival (PFS) was determined using univariate Cox regression models.Results Pretreatment TLGT was predictive for PFS and OS, irrespective of the segmentation method used. Inclusion of TLGLN improved disease and early response assessment, with pretreatment TLGS more strongly associated with PFS and OS than TLGT for all segmentation algorithms. This was also the case for ΔTLGS, which was significantly associated with PFS and OS, with the exception of RTL and T40.Conclusions ΔTLGS was significantly associated with PFS and OS, except for RTL and T40. Inclusion of TLGLN improves early treatment response monitoring during concomitant chemoradiotherapy with FDG-PET.
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Subject
Humans
Carcinoma, Non-Small-Cell Lung
Lung Neoplasms
Fluorodeoxyglucose F18
Disease-Free Survival
Proportional Hazards Models
Bayes Theorem
Glycolysis
Algorithms
Adult
Aged
Middle Aged
Female
Male
Chemoradiotherapy
Positron Emission Tomography Computed Tomography
Research team
Translational Molecular Imaging
Language
eng
Date accepted
2016-04-16
License start date
2016-06
Citation
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2016, 119 (3), pp. 473 - 479