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Early diagnosis of Creutzfeldt-Jakob disease (CJD) patients is often challenging due to the low sensitivity of the current clinical diagnostic criteria. We describe MRI and dual-phase 18 F-FP-CIT PET findings in 2 cases of sporadic CJD presenting different clinical phenotypes (Heidenhain variant and corticobasal syndrome). Our case series suggest that dual-phase FP-CIT-PET findings may improve the diagnosis of CJD by combining the perfusion patterns in early phase with the dopamine transporter density in delayed phase. Familiarity with these dual-phase FP-CIT PET findings is helpful for early correct diagnosis of CJD.
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http://dx.doi.org/10.1097/RLU.0000000000004240 | DOI Listing |
Neurology
December 2024
From the Department of Neurology (H.S.Y.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul; Department of Neurology (Y.L.), Ilsan Paik Hospital, Inje University College of Medicine, Goyang; Department of Neurology (Y.H.S., P.H.L.), and Department of Nuclear Medicine (M.Y.),
Background And Objectives: Parkinson disease (PD) exhibits a characteristic pattern of brain perfusion or metabolism, thereby being considered network disorder. Using dual-phase -(3-fluoropropyl)-2β-carbomethoxy-3β-(4-iodophenyl) nortropane (F-FP-CIT) PET, we investigated the role of brain perfusion in motor symptoms and disease progression, independent of striatal dopamine depletion.
Methods: We recruited patients with de novo PD and healthy controls (HCs) who underwent dual-phase F-FP-CIT PET and brain MRI.
NPJ Parkinsons Dis
November 2024
Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.
Individual variability exists in parkinsonian motor symptoms despite a similar degree of nigrostriatal dopamine depletion in Parkinson's disease (PD), called motor reserve. We enrolled 397 patients newly diagnosed with PD who underwent dual-phase F-FP-CIT PET upon initial assessment. Individual motor reserve was estimated based on initial parkinsonian motor symptoms and striatal dopamine transporter availability using a residual model.
View Article and Find Full Text PDFEJNMMI Res
July 2024
Department of Nuclear Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea.
Background: Dual-phase fluorine-18 labeled N-3-fluoropropyl-2β-carbomethoxy-3β-(4-iodophenyl) nortropane (F-FP-CIT) positron emission tomography (PET) scans could be used to support disorders like Parkinson's disease (PD). Dopamine transporter (DAT) binding and cerebral perfusion are associated with ageing and gender. We investigated the effects of age and gender on non-degenerative parkinsonism, using automated quantification in striatum: specific binding ratios (SBRs) for DAT binding in delayed phase PET (dCIT) and standardized-uptake-value ratios (SUVRs) for cerebral perfusion in early phase PET (eCIT).
View Article and Find Full Text PDFClin Nucl Med
June 2024
From the Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.
Purpose Of The Report: Although early detection of individuals at risk of dementia conversion is important in patients with Parkinson's disease (PD), there is still no consensus on neuroimaging biomarkers for predicting future cognitive decline. We aimed to investigate whether cerebral perfusion patterns on early-phase 18 F-N-(3-fluoropropyl)-2β-carboxymethoxy-3β-(4-iodophenyl) nortropane ( 18 F-FP-CIT) PET have the potential to serve as a neuroimaging predictor for early dementia conversion in patients with PD.
Materials And Methods: In this retrospective analysis, we enrolled 187 patients with newly diagnosed PD who underwent dual-phase 18 F-FP-CIT PET at initial assessment and serial cognitive assessments during the follow-up period (>5 years).
Parkinsonism Relat Disord
April 2024
Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea; Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea. Electronic address:
Introduction: This study aimed to investigate whether regional cerebral perfusion patterns on early-phase F-FP-CIT PET scans, which is typically coupled to cerebral metabolism, predict the long-term prognosis of Parkinson's disease (PD).
Methods: We enrolled 397 drug-naïve patients with early-stage PD who underwent dual-phase F-FP-CIT PET scans. After quantifying the early-phase F-FP-CIT PET images, cluster analysis was performed to delineate the PD subtypes according to the patterns of regional cerebral perfusion.