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In vivo methods for imaging blood –brain barrier function and dysfunction
AbstractThe blood –brain barrier (BBB) is the interface between the central nervous system and systemic circulation. It tightly regulates what enters and is removed from the brain parenchyma and is fundamental in maintaining brain homeostasis. Increasingly, the BBB is recognised as having a significant role in nume rous neurological disorders, ranging from acute disorders (traumatic brain injury, stroke, seizures) to chronic neurodegeneration (Alzheimer’s disease, vascular dementia, small vessel disease). Numerous approaches have been developed to study the BBB in vitro, in vivo, and ex vivo. The complex mu lticellula...
Source: European Journal of Nuclear Medicine and Molecular Imaging - February 23, 2023 Category: Nuclear Medicine Source Type: research

Correlation of Global and Regional Amyloid Burden by 18F-Florbetaben PET/CT With Cognitive Impairment Profile and Severity
Conclusion Semiquantitative analysis of amyloid PET by SUVR values revealed a significant correlation between amyloid burden and CI severity, although only in women.
Source: Clinical Nuclear Medicine - October 17, 2022 Category: Nuclear Medicine Tags: Original Articles Source Type: research

60 Years of Achievements by KSNM in Neuroimaging Research
AbstractNuclear medicine neuroimaging is able to show functional and molecular biologic abnormalities in various neuropsychiatric diseases. Therefore, it has played important roles in the clinical diagnosis and in research on the normal and pathological states of the brain. More than 400 outstanding studies have been conducted by Korean researchers over the past 60  years. In the 1990s, when multiheaded single-photon emission computed tomography (SPECT) scanners were first introduced in South Korea, stroke research using brain perfusion SPECT was conducted. With the spread of positron emission tomography (PET) scanners in...
Source: Nuclear Medicine and Molecular Imaging - January 15, 2022 Category: Nuclear Medicine Source Type: research

Potential applications of FDG-PET/MRI in detecting vascular dementia
Conclusions: FDG-PET/MRI may be a valuable tool in the diagnosis of VaD. However, the paucity of data in the field necessitates a further analysis of its similarity to FDG-PET/CT in results. Novel studies should be conducted to explore various scanners, patient populations, and MRI protocols to better inform the identification of VaD.
Source: Journal of Nuclear Medicine - May 14, 2020 Category: Nuclear Medicine Authors: Bhattaru, A., Zhang, V., Hancin, E., Borja, A., Rojulpote, K. V., Werner, T., Revheim, M.-E., Alavi, A. Tags: Educational Exhibits Poster Session I Source Type: research

Crossed cerebellar diaschisis on 18F-FDG PET across neurodegenerative diseases: frequency and association with 11C-PIB and 18F-FTP
Conclusions: CCD is present in a significant proportion of patients with neurodegenerative diseases, and is more prevalent in specific phenotypes, especially in typically asymmetric presentations such as CBS, svPPA and lvPPA. The association between CCD on 18F-FDG and cortical 18F-FTP suggests a Tau-related disruption of cortico-ponto-cerebellar pathways in amyloid-positive patients, while amyloid does not seem to play a significant role. Further studies are required to elucidate prognostic value or clinical correlate of CCD. Table 1. Patient characteristics and prevalence of crossed cerebellar diaschisis (CCD) by diagnosi...
Source: Journal of Nuclear Medicine - May 14, 2020 Category: Nuclear Medicine Authors: Provost, K., Strom, A., Iaccarino, L., Edwards, L., Mellinger, T., Pham, J., Baker, S., Miller, B., Jagust, W., La Joie, R., Rabinovici, G. Tags: Neurodegenerative Diseases Source Type: research

Value of SPECT/CT over planar imaging during Tc-99m MDP triple phase bone scintigraphy for detection of osteomyelitis in patients with stage IV pressure ulcers
Conclusion: SPECT/CT imaging has a significant added diagnostic value over planar imaging in accurately detecting osseous involvement with stage IV pressure ulcers. It significantly reduced equivocal results by accurate uptake localization, reducing false positive results due to other associated pathologies and reducing false negative results due to overlap by other structures or difficult patient positioning.
Source: Journal of Nuclear Medicine - May 14, 2020 Category: Nuclear Medicine Authors: Nasr, H., Alfawzan, T., Alqarni, A., Farghaly, H. Tags: Infection/Pulmonary/Outcomes (Poster Session) Source Type: research

Alzheimers Disease: A Review of Recent Developments and the Role of Imaging
1114Purpose: Alzheimer’s disease (AD), the most common form of dementia, is a devastating illness that will affect an estimated 5.7 million Americans and almost 50 million people worldwide in 2018, with numbers expected to nearly triple by 2050. While mortality related to heart disease and stroke has continued to decline, the rate of AD-related death in the United States more than doubled in the period from 2000-2015. Now the 6th leading cause of death, it is the least preventable and treatable of the major causes, and places a tremendous financial, physical, and emotional burden on the estimated 16 million unpaid ca...
Source: Journal of Nuclear Medicine - May 20, 2019 Category: Nuclear Medicine Authors: Ismail, H., Wang, L. Tags: Educational Exhibit Posters Source Type: research

Bioinks and in vitro neurovascular unit production - New prospects in Alzheimer's disease research.
Authors: Lougiaki P, Tsolaki M, Pantazaki A Abstract Neurovascular dysfunction is a central process in the pathogenesis of the stroke and most neurodegenerative diseases, including Alzheimer's disease. The multi-cell neurovascular unit (NVU) combines the components of the neural, vascular and extracellular matrix (ECM) into an important interface whose proper function is critical to maintaining brain health. Tissue engineering now offers new tools and information to promote understanding of NVU's operation. A promising area for the development of NVU models is their bio-production through 3D bio-printing to produce...
Source: Hellenic Journal of Nuclear Medicine - March 17, 2019 Category: Nuclear Medicine Tags: Hell J Nucl Med Source Type: research

18F-FNDP for PET Imaging of Soluble Epoxide Hydrolase
Conclusion: 18F-FNDP can be synthesized in suitable radiochemical yield and high specific radioactivity and purity. In vivo imaging experiments demonstrated that 18F-FNDP targeted sEH in murine and nonhuman primate brain specifically. 18F-FNDP is a promising PET radiotracer likely to be useful for understanding the role of sEH in a variety of conditions affecting the central nervous system.
Source: Journal of Nuclear Medicine - October 31, 2016 Category: Nuclear Medicine Authors: Horti, A. G., Wang, Y., Minn, I., Lan, X., Wang, J., Koehler, R. C., Alkayed, N. J., Dannals, R. F., Pomper, M. G. Tags: Basic Science Investigations Source Type: research