Keywords:
Tissue characterisation, Haemodynamics / Flow dynamics, Diagnostic procedure, Computer Applications-Detection, diagnosis, MR-Diffusion/Perfusion, MR, Oncology, Neuroradiology brain, Head and neck, Neoplasia
Authors:
M. Bunak1, M. Vishnyakova1, G. Chermenskiy2; 1Moscow/RU, 2Москва/RU
DOI:
10.26044/ecr2019/C-2567
Results
As a result of the study all patients were divided into two groups depending on the CBF value.
1st group - 38 patients (67.9%) with a pathological increase in cerebral blood flow on ASL perfusion cards (presumably a tumor – ROI 1),
the average CBF was 137.6 ± 35.2 ml/100g/min (minimum - 79.6 ml/100g/min,
max - 227.6 ml/100g/min) (Fig.2).
In this patients the CBF value of the supposed tumor site was 5-6 times higher than the blood flow in the area of postoperative scars (ROI 2),
the average CBF here was 23.6 ± 6.3 ml/100g/min and 6-8 times higher than the CBF of the deep white matter of the brain in the contralateral hemisphere (ROI 3),
which was 20.3 ± 4.7 ml/100g/min,
(p<0,0001) (Fig.
3).
2nd Group - 18 patients (32.1%) with no areas of pathological CBF elevation on ASL-perfusion maps against the background of postoperative changes,
the average level of CBF in the study area (ROI 1 and ROI 2 were similar) was 22.3 ± 5.9 ml/100g/min (minimum - 13.9 ml/100g/min,
maximum - 37.1 ml/100g/min).
It is almost identical to the white matter of the brain in the contralateral hemisphere (ROI 3),
where the average CBF was 19.1 ± 4.4 ml/100g/min (Fig.
4).
The levels of CBF in the areas of postoperative changes in patients from the 1st and 2nd groups were not significantly different,
p = 0.52.
Also there was no significant differences between groups in CBF levels in the white matter of the brain,
p = 0.96.