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Comparison between simultaneously acquired arterial spin labeling and 18F-FDG PET in mesial temporal lobe epilepsy assisted by a PET/MR system and SEEG
- Source :
- NeuroImage: Clinical, Vol 19, Iss, Pp 824-830 (2018), NeuroImage : Clinical
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Objective In the detection of seizure onset zones, arterial spin labeling (ASL) can overcome the limitations of positron emission tomography (PET) with 18F-fluorodeoxyglucose (18F-FDG), which is invasive, expensive, and radioactive. PET/magnetic resonance (MR) systems have been introduced that allow simultaneous performance of ASL and PET, but comparisons of these techniques with stereoelectroencephalography (SEEG) and comparisons among the treatment outcomes of these techniques are still lacking. Here, we investigate the effectiveness of ASL compared with that of SEEG and their outcomes in localizing mesial temporal lobe epilepsy (MTLE) and assess the correlation between simultaneously acquired PET and ASL. Methods Between October 2016 and August 2017, we retrospectively studied 12 patients diagnosed with pure unilateral MTLE. We extracted and quantitatively computed values for ASL and PET in the bilateral hippocampus. SEEG findings and outcome were considered the gold standard of lateralization. Finally, the bilateral asymmetry index (AI) was calculated to assess the correlation between PET and ASL. Results Our results showed that hypoperfusion in the hippocampus detected using ASL matched the SEEG-defined epileptogenic zone in this series of patients. The mean normalized voxel value of ASL in the contralateral hippocampus was 0.97 ± 0.19, while in the ipsilateral hippocampus, it was 0.84 ± 0.14. Meanwhile, significantly decreased perfusion and metabolism were observed in these patients (Wilcoxon, p<br />Highlights • ASL has been increasingly used in presurgical evaluations in epilepsy recent years. • Comparisons of ASL and PET with a PET/MR system using SEEG and treatment outcomes as gold-standard are still lacking. • Decreased perfusion consistent with hypometabolism and SEEG was observed with ASL. • ASL offers an effective non-invasive alternative to PET in evaluation of MTLE.
- Subjects :
- Adult
Male
Adolescent
SEEG
Cognitive Neuroscience
Hippocampus
lcsh:Computer applications to medicine. Medical informatics
computer.software_genre
Multimodal Imaging
lcsh:RC346-429
Stereoelectroencephalography
Lateralization of brain function
030218 nuclear medicine & medical imaging
Young Adult
03 medical and health sciences
Epilepsy
0302 clinical medicine
Fluorodeoxyglucose F18
Voxel
otorhinolaryngologic diseases
medicine
Humans
Radiology, Nuclear Medicine and imaging
lcsh:Neurology. Diseases of the nervous system
Retrospective Studies
medicine.diagnostic_test
business.industry
Regular Article
Magnetic resonance imaging
Gold standard (test)
medicine.disease
Magnetic Resonance Imaging
Temporal Lobe
PET/MR
Epilepsy, Temporal Lobe
Neurology
Positron emission tomography
Positron-Emission Tomography
lcsh:R858-859.7
Female
Spin Labels
Neurology (clinical)
Nuclear medicine
business
computer
Arterial spin labeling (ASL)
030217 neurology & neurosurgery
18F-FDG PET
Subjects
Details
- ISSN :
- 22131582
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- NeuroImage: Clinical
- Accession number :
- edsair.doi.dedup.....bf45e64992559634d293bf39f2453edb