Complementarity between 18F-FDG PET/CT and Ultrasonography or Angiography in Carotid Plaque Characterization
Journal of Clinical Neurology
;
: 176-185, 2013.
Article
in English
| WPRIM
| ID: wpr-58790
ABSTRACT
BACKGROUND AND PURPOSE:
To estimate clinical roles of 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) versus angiography and ultrasonography in carotid plaque characterization.METHODS:
We characterized two groups of patients with recently (<1 month) symptomatic (n=14; age=71.8+/-8.6 years, mean+/-SD) or chronic (n=13, age=68.9+/-9.0 years) carotid stenosis using a battery of imaging tests diffusion magnetic resonance (MR) imaging, MR or transfemoral angiography, duplex ultrasonography (DUS), and carotid FDG-PET/computed tomography.RESULTS:
The degree of angiographic stenosis was greater in patients with recently symptomatic carotid plaques (67.5+/-21.5%) than in patients with chronic carotid plaques (32.4+/-26.8%, p=0.001). Despite the significant difference in the degree of stenosis, lesional maximum standardized uptake values (maxSUVs) on the carotid FDG-PET did not differ between the recently symptomatic (1.56+/-0.53) and chronic (1.56+/-0.34, p=0.65) stenosis groups. However, lesional-to-contralesional maxSUV ratios were higher in the recently symptomatic stenosis group (113+/-17%) than in the chronic stenosis group (98+/-10%, p=0.017). The grayscale median value of the lesional DUS echodensities was lower in the recently symptomatic stenosis group (28.2+/-10.0, n=9) than in the chronic stenosis group (53.9+/-14.0, n=8; p=0.001). Overall, there were no significant correlations between angiographic stenosis, DUS echodensity, and FDG-PET maxSUV. Case/subgroup analyses suggested complementarity between imaging modalities.CONCLUSIONS:
There were both correspondences and discrepancies between the carotid FDG-PET images and DUS or angiography data. Further studies are required to determine whether FDG-PET could improve the clinical management of carotid stenosis.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Angiography
/
Magnetic Resonance Spectroscopy
/
Carotid Stenosis
/
Constriction, Pathologic
/
Fluorodeoxyglucose F18
/
Positron-Emission Tomography
/
Diffusion
/
Atherosclerosis
/
Molecular Imaging
Limits:
Humans
Language:
English
Journal:
Journal of Clinical Neurology
Year:
2013
Type:
Article
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