scholarly journals Preserved Glucose Metabolism of Deep Cerebellar Nuclei in a Case of Multiple System Atrophy with Predominant Cerebellar Ataxia: F-18 Fluorodeoxyglucose Positron Emission Tomography Study

2010 ◽  
Vol 3 (2) ◽  
pp. 51-53
Author(s):  
Oh Dae Kwon ◽  
Chang-Seok Ki
Keyword(s):  
Positron Emission Tomography ◽  
Glucose Metabolism ◽  
Multiple System Atrophy ◽  
Cerebellar Ataxia ◽  
Cerebellar Nuclei ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Deep Cerebellar Nuclei ◽  
Positron Emission ◽  
Fluorodeoxyglucose Positron Emission

Altered Regional Cerebral Glucose Metabolism in Internet Game Overusers: A 18F-fluorodeoxyglucose Positron Emission Tomography Study

CNS Spectrums ◽  
2010 ◽  
Vol 15 (3) ◽  
pp. 159-166 ◽  
Author(s):  
Hyun Soo Park ◽  
Sang Hee Kim ◽  
Seong Ae Bang ◽  
Eun Jin Yoon ◽  
Sang Soo Cho ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Glucose Metabolism ◽  
Impulse Control ◽  
Reward Processing ◽  
Emission Tomography ◽  
Positron Emission Tomography Study ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Positron Emission ◽  
Regional Cerebral Glucose Metabolism ◽  
Fluorodeoxyglucose Positron Emission

ABSTRACTIntroduction: Internet game overuse is an emerging disorder and features diminished impulse control and poor reward-processing. In an attempt to understand the neurobiological bases of Internet game overuse, we investigated the differences in regional cerebral glucose metabolism at resting state between young individuals with Internet game overuse and those with normal use using 18F-fluorodeoxyglucose positron emission tomography study.Methods: Twenty right-handed male participants (9 normal users: 24.7±2.4 years of age, 11 overusers: 23.5±2.9 years of age) participated. A trait measure of impulsivity was also completed after scanning.Results: Internet game overusers showed greater impulsiveness than the normal users and there was a positive correlation between the severity of Internet game overuse and impulsiveness. Imaging data showed that the overusers had increased glucose metabolism in the right middle orbitofrontal gyrus, left caudate nucleus, and right insula, and decreased metabolism in the bilateral postcentral gyrus, left precentrai gyrus, and bilateral occipital regions compared to normal users.Conclusion: Internet game overuse may be associated with abnormal neurobiological mechanisms in the orbitofrontal cortex, striatum, and sensory regions, which are implicated in impulse control, reward processing, and somatic representation of previous experiences. Our results support the idea that Internet game overuse shares psychological and neural mechanisms with other types of impulse control disorders and substance/non-substance-related addiction.

Motor Cortex Stimulation Improves Local Cerebral Glucose Metabolism in the Ipsilateral Thalamus in Patients With Poststroke Pain: Case Report

Neurosurgery ◽  
2011 ◽  
Vol 69 (2) ◽  
pp. E462-E469 ◽  
Author(s):  
Masaki Ito ◽  
Satoshi Kuroda ◽  
Tohru Shiga ◽  
Nagara Tamaki ◽  
Yoshinobu Iwasaki
Keyword(s):  
Positron Emission Tomography ◽  
Glucose Metabolism ◽  
Motor Cortex ◽  
Cerebral Glucose Metabolism ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Motor Cortex Stimulation ◽  
18F Fluorodeoxyglucose ◽  
Positron Emission ◽  
Fluorodeoxyglucose Positron Emission

Abstract BACKGROUND AND IMPORTANCE: Motor cortex stimulation (MCS) is documented as an effective therapeutic option for patients with poststroke pain. However, its underlying mechanism is still unclear. This study aimed to evaluate local cerebral glucose metabolism before and after MCS in patients with poststroke pain. CLINICAL PRESENTATION: Using 18F-fluorodeoxyglucose positron emission tomography, cerebral metabolic rate for glucose (CMRGlu) was measured in 6 patients with poststroke pain before MCS. Their lesions were located in the corona radiata, internal capsule, and thalamus. An epidural electrode was implanted under the monitoring of intraoperative neuronavigation and somatosensory evoked/motor evoked potentials. 18F-fluorodeoxyglucose positron emission tomography was repeated in 4 patients (67%) who underwent successful MCS. Asymmetry of CMRGlu was semiquantitatively analyzed using an automated region of interest setting method. Before MCS, the ratio of CMRGlu in the ipsilateral to contralateral thalamus was 0.81 ± 0.13 (n = 6), (range, 0.63-0.97). However, there was no significant asymmetry of CMRGlu in other regions. Successful MCS significantly improved the asymmetry of CMRGlu in the ipsilateral thalamus from 0.81 ± 0.14 to 0.89 ± 0.17 (P < .01, n = 4). The therapeutic effect was proportional to the improvement of CMRGlu asymmetry (R = 0.79, P = 0.28; single regression analysis). CONCLUSION: Poststroke pain is closely related to the reduced glucose use in the thalamus contralateral to the painful area. Successful MCS significantly improves glucose use in the thalamus ipsilateral to MCS, suggesting that electrical stimulation of the motor cortex may activate the corticothalamic connection from the motor cortex.

scholarly journals F-Fluorodeoxyglucose positron emission tomography in terms of present-day diagnosis, follow-up, and treatment of differential thyroid cancer

2003 ◽  
Vol 49 (4) ◽  
pp. 46-50
Author(s):  
K. Zaplatnikov ◽  
C. Menzel ◽  
M. Diel ◽  
N. Debert ◽  
N. Hamcho ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Thyroid Cancer ◽  
Glucose Metabolism ◽  
Research Methods ◽  
Fdg Pet ◽  
Emission Tomography ◽  
Fluorodeoxyglucose Positron Emission Tomography ◽  
Positron Emission ◽  
Fluorodeoxyglucose Positron Emission

Positron emission tomography with “F-fluorodsoxyglucose (“ F-FDG-PET) - one of the types of radionuclide research methods that can determine the increased glucose metabolism in neoplastic cells - has recently taken a strong place among other methods for diagnosing malignant good diseases.

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