Keywords:
Metastases, Ablation procedures, MR-Diffusion/Perfusion, MR, Oncology, Liver
Authors:
O. W. Kozak1, T. Nowicki2, J. Pienkowska2, E. Izycka-Swieszewska2, D. Zadrozny2, E. Szurowska2; 1Gdańsk, po/PL, 2Gdansk/PL
DOI:
10.1594/ecr2018/C-1544
Results
The total number of analysed lesions was 110 (on average 2 per patient),
83 of them were completely ablated and in 27 residual disease was observed.
Out of this group,
52 lesions (a single one with the highest ADC value in case of multiple lesions) were included into Kaplan-Meier analysis.
9 cases out of 52 were censored (17.3%).
In ADC maps for b value of 0-15 s/mm2,
24 lesions presented with ADC values above 2.49 mm2/s with 1 censored case in this group.
In ADC maps for b value of 0-500 s/mm2,
27 lesions presented with ADC values above 1.43 mm2/s with 3 censored cases.
In ADC maps for b value of 0-500 s/mm2,
the ADC value ⩾1.43 mm2/s correlated with shorter survival time,
whereas ADC value <1.43 mm2/s correlated with longer survival time.
Statistically significant differences were identified by log-rank test = 2.6998,
p= 0.007.
Such a correlation was not observed for ADC values in ADC maps for b value of 0-15 s/mm2 (p= 0.058).