18F-FET and 18F-choline PET-CT in patients with MRI-suspected low-grade gliomas: a pilot study

Znanstveni rad - Izvorni znanstveni rad

• Autor: Ana Mišir Krpan
• Autor: Marina Hodolič
• Autor: Anja Tea Golubić
• Autor: Maja Baučić
• Autor: Jakob Nemir
• Autor: Goran Mrak
• Autor: Marijan Žuvić
• Autor: Dražen Huić
• Autorova ustanova: Sveučilište u Zagrebu; Medicinski fakultet; (KATEDRA ZA KIRURGIJU)
• Autorova ustanova: Sveučilište u Zagrebu; Medicinski fakultet; (KATEDRA ZA NUKLEARNU MEDICINU)
• Znanstveno / umjetničko područje, polje i grana: BIOMEDICINA I ZDRAVSTVO; Kliničke medicinske znanosti; Kirurgija
• Znanstveno / umjetničko područje, polje i grana: BIOMEDICINA I ZDRAVSTVO; Kliničke medicinske znanosti; Nuklearna medicina

Sažetak (engleski)

Aim: To investigate the diagnostic accuracy of O-(2-[18F]-fluoroethyl)-L-tyrosine (18F-FET) and fluoromethyl-(18F)-dimethyl-2-hydroxyethyl-ammonium chloride (18F-FCH) computed tomography (CT) in patients with primary low-grade gliomas (LGG).
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Methods: The study enrolled patients with magnetic resonance imaging (MRI)-suspected LGG. Patients underwent both 18F-FET and 18F-FCH positron emission tomography (PET)-CT. Brain PET-CT was performed according to standard protocol - 20 minutes after intravenous injection of 185 MBq of 18F-FET and 185 MBq of 18F-FCH PET. Surgery and pathohistological diagnosis were performed in the next two weeks.
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Results: We observed significantly better concordance between tumor histology and 18F-FET PET (weighted Kappa 0.74) compared with both 18F-FCH (weighted Kappa 0.15) and MRI (weighted Kappa 0.00). Tumor histology was significantly associated with 18F-FET (odds ratio 12.87; 95% confidence interval [CI], 0.49-333.70; P=0.013, logistic regression analysis). Receiver operating characteristic curve analysis comparing 18F-FCH (area under the curve [AUC] 0.625, 95% CI 0.298-0.884) and 18F-FET (AUC 0.833, 95% CI 0.499-0.982) showed better diagnostic properties of 18F-FET (AUC difference 0.208, 95% CI -0.145 to 0.562, P=0.248).
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Conclusion: Performing PET-CT in patients with newly diagnosed LGG should be preceded by a selection of an appropriate radiopharmaceutical. 18F-FET seems to be more accurate than 18F-FCH in the LGG diagnosis.

• Ključne riječi (engleski): Brain Neoplasms* / diagnostic imaging; Choline / analogs & derivatives; Glioma* / diagnostic imaging; Humans; Magnetic Resonance Imaging; Pilot Projects; Positron Emission Tomography Computed Tomography; Positron-Emission Tomography; Radiopharmaceuticals; Tyrosine
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Croatian Medical Journal
• Brojčani podaci: vol. 62, br. 4, str. 310-317
• p-ISSN: 0353-9504
• e-ISSN: 1332-8166
• DOI: https://doi.org/10.3325/cmj.2021.62.310
• URN:NBN: urn:nbn:hr:105:063111
• Datum objave publikacije: 2021-08-31
• URL dokumenta: http://www.cmj.hr/2021/62/4/34472733.htm
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Datum i vrijeme pohrane: 2021-09-20 12:12:26