scholarly journals Discriminative Power of Arterial Spin Labeling Magnetic Resonance Imaging and 18F-Fluorodeoxyglucose Positron Emission Tomography Changes for Amyloid-β-Positive Subjects in the Alzheimer's Disease Continuum

2015 ◽  
Vol 16 (1-2) ◽  
pp. 87-94 ◽  
Author(s):  
Duygu Tosun ◽  
Norbert Schuff ◽  
William Jagust ◽  
Michael W. Weiner ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Arterial Spin Labeling ◽  
Amyloid Β ◽  
Spin Labeling ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Discriminative Power ◽  
Resonance Imaging ◽  
Positron Emission ◽  
Fluorodeoxyglucose Positron Emission

scholarly journals 18F-fluorodeoxyglucose positron emission tomography and magnetic resonance imaging evaluation of chorea

2018 ◽  
Vol 10 (3) ◽  
Author(s):  
Nobuyuki Ishii ◽  
Hitoshi Mochizuki ◽  
Miyuki Miyamoto ◽  
Yuka Ebihara ◽  
Kazutaka Shiomi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Positron Emission Tomography ◽  
Basal Ganglia ◽  
Magnetic Resonance ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Resonance Imaging ◽  
Indirect Pathway ◽  
Positron Emission ◽  
Fluorodeoxyglucose Positron Emission

Chorea is thought to be caused by deactivation of the indirect pathway in the basal ganglia circuit. However, few imaging studies have evaluated the basal ganglia circuit in actual patients with chorea. We investigated the lesions and mechanisms underlying chorea using brain magnetic resonance imaging (MRI) and 18F-fluorodeoxyglucose positron emission tomography (FDG-PET). This retrospective case series included three patients with chorea caused by different diseases: hyperglycemic chorea, Huntington’s disease, and subarachnoid hemorrhage. All the patients showed dysfunction in the striatum detected by both MRI and FDG-PET. These neuroimaging findings confirm the theory that chorea is related to an impairment of the indirect pathway of basal ganglia circuit.

Prospective Study of [18F]Fluorodeoxyglucose Positron Emission Tomography and Computed Tomography and Magnetic Resonance Imaging in Oral Cavity Squamous Cell Carcinoma With Palpably Negative Neck

2006 ◽  
Vol 24 (27) ◽  
pp. 4371-4376 ◽  
Author(s):  
Shu-Hang Ng ◽  
Tzu-Chen Yen ◽  
Joseph Tung-Chieh Chang ◽  
Sheng-Chieh Chan ◽  
Sheung-Fat Ko ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Fdg Pet ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Resonance Imaging ◽  
Neck Metastasis ◽  
Positron Emission ◽  
Neck Metastases ◽  
Visual Correlation ◽  
Fluorodeoxyglucose Positron Emission

Purpose To assess the clinical usefulness of [18F]fluorodeoxyglucose positron emission tomography ([18F]FDG PET) as well as computed tomography (CT) or magnetic resonance imaging (MRI) in oral squamous cell carcinoma (SCC) patients with palpably negative neck. Patients and Methods In total, 134 oral SCC patients with palpably negative neck were prospectively evaluated with [18F]FDG PET, CT/MRI, and their visual correlation. Histopathologic analysis was used as the gold standard for assessment of these imaging techniques. Results Thirty-five (26.1%) of our 134 patients were found to have neck metastases. On a level-by-level basis, the sensitivity of [18F]FDG PET for nodal metastases was two-fold higher than that of CT/MRI (41.2% v 21.6%, respectively; P = .021). Visual correlation of [18F]FDG PET and CT/MRI yielded slightly higher sensitivity and specificity than [18F]FDG PET alone (47.1% v 41.2%, P = .25; 98.0% v 96.8%, P = .125, respectively). On a patient-by-patient basis, the sensitivity of [18F]FDG PET for neck metastases was 51.4% and increased to 57.1% after visual correlation with CT/MRI. The probabilities of occult neck metastasis after using [18F]FDG PET were 6.7% in T1 tumors, 10.8% in T2 tumors, 13.3% in T3 tumors, and 25% in T4 tumors and decreased to 3.3% in T1 tumors and to 9.2% in T2 tumors after visual correlation with CT/MRI. Conclusion [18F]FDG PET was superior to CT/MRI for detecting palpably occult neck metastasis of oral SCC. Because [18F]FDG PET could reduce the probability of occult neck metastasis to less than 15% in T1 to T3 tumors, it should be indicated for evaluation of these subpopulations.

Sign in / Sign up

Export Citation Format

Share Document