Combination of Magnetic Resonance Spectroscopy and ¹¹C-Methionine Positron Emission Tomography for the Accurate Diagnosis of Non-Enhancing Supratentorial Glioma
Korean Journal of Radiology
;
: 967-975, 2019.
Article
in English
| WPRIM
| ID: wpr-760267
ABSTRACT
OBJECTIVE:
To evaluate whether the combination of magnetic resonance spectroscopy (MRS) and 11C-methionine positron emission tomography (11C-MET PET) could increase accurate diagnostic sensitivity for non-enhancing supratentorial gliomas. MATERIALS ANDMETHODS:
Between February 2012 and December 2017, 109 patients with non-enhanced supratentorial lesions on contrast-enhanced MRI were enrolled. Each patient underwent MRS and 11C-MET PET before treatment. A lesion was considered to be a glioma when either the MRS or 11C-MET PET results reached the diagnostic threshold. The radiological diagnosis was compared with the pathological diagnosis or medical diagnostic criteria.RESULTS:
The sensitivity and specificity were 60.0% and 50.0% for MRS and 75.8% and 50.0% for 11C-MET PET, respectively. Upon combining the two modalities, the sensitivity and specificity of the imaging-based diagnosis prior to surgery reached 89.5% and 42.9%, respectively. Statistically significant differences in the sensitivities were observed between the combined and individual approaches (MRS alone, 89.5% vs. 60.0%, p < 0.001; 11C-MET PET alone, 89.5% vs. 75.8%, p = 0.001). However, no significant differences in specificity were observed between the combined and individual modalities.CONCLUSION:
The combination of MRS and 11C-MET PET findings significantly increases accurate diagnostic sensitivity for non-enhancing supratentorial gliomas without significantly lowering the specificity. This finding suggests the potential of the combined MRS and 11C-MET PET approach in clinical applications.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Magnetic Resonance Imaging
/
Magnetic Resonance Spectroscopy
/
Sensitivity and Specificity
/
Positron-Emission Tomography
/
Diagnosis
/
Electrons
/
Glioma
/
Methionine
Type of study:
Diagnostic study
Limits:
Humans
Language:
English
Journal:
Korean Journal of Radiology
Year:
2019
Type:
Article
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