<0.01),且ASL-rCBF的诊断效能最高,以ASL-rCBF=2.32为临界值,诊断效能最高;而DSC-平均相对通过时间(DSC-relative mean transit time,DSC-rMTT)及DSC-平均相对达峰时间(DSC-relative time to peak,DSC-rTTP)在HGG术后复发组和放射性脑坏死组之间的差异无统计学意义(
To explore the value of three-dimensional arterial spin labeling (
3D-ASL) and dynamic susceptibility contrast-enhanced (DSC)-perfusion-weighted imaging (PWI) in the differential diagnosis of postoperative recurrence and radiation necrosis of high-grade glioma (HGG).
Methods:
40 patients with HGG who underwent postoperative magnetic resonance imaging (MRI) follow-up with abnormal enhanced lesions were selected. 20 cases of postoperative recurrence and 20 cases of radiation necrosis were confirmed by the second operation pathology or long-term follow-up examination. All cases underwent routine MRI
MRI enhancement
3D-ASL
32 cases underwent DSC-PWI. The values of hemodynamic parameters related to focal reactivity and normal contralateral image were got
and the values of perfusion parameters in the differential diagnosis of postoperative recurrence and radiation necrosis of HGG were analyzed statistically.
Results:
The hemodynamic parameters of 3D-ASL-relative cerebral blood flow (ASL-rCBF)
DSC-PWI-rCBF (DSC-rCBF) and DSC-relative cerebral blood volume (DSC-rCBV) in the postoperative recurrence group of HGG were significantly higher than those in the radiation necrosis group (
P
<0.01). ASL-rCBF has the highest diagnostic efficiency. And when ASL-rCBF=2.32 is the critical value
the diagnostic efficiency is the highest. While
there were no statistically significant differences in DSC-relative mean transit time (DSC-rMTT) and DSC-relative time to peak (DSC-rTTP)between the postoperative recurrence and the radiation necrosis (
P
=0.21
0.15).
Conclusion:
Both 3D-ASL and DSC-PWI can distinguish postoperative recurrence and radiation necrosis of HGG
and the diagnostic efficacy of ASL-rCBF was slightly higher than that of DSC-rCBF and DSC-rCBV.
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Related Author
NI Yunyan
CHEN Zhao
CHEN Yunbin
HUANG Xing
LIANG Yan
YI Chuang
WANG Yan
REN Junjie
Related Institution
Department of Diagnostic Radiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital
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Department of Cardiothoracic Surgery, KaiLuan General Hospital