Comparison of different quantification methods for 18F-fluorodeoxyglucose-positron emission tomography studies in rat brains
OBJECTIVES: This study aimed to evaluate several methods to estimate glucose consumption in the male Wister rat brain as measured by PET. METHODS: Fourteen male Wistar normoglycemic rats were studied. The input function consisted of seventeen blood samples drawn manually from the femoral artery. Gl...
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| Format: | Article |
| Language: | English |
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Elsevier España
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| Series: | Clinics |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322019000100277&lng=en&tlng=en |
| _version_ | 1818522270161698816 |
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| author | Silvana Prando Camila de Godoi Carneiro Cecil Chow Robilotta Marcelo Tatit Sapienza |
| author_facet | Silvana Prando Camila de Godoi Carneiro Cecil Chow Robilotta Marcelo Tatit Sapienza |
| author_sort | Silvana Prando |
| collection | DOAJ |
| description | OBJECTIVES: This study aimed to evaluate several methods to estimate glucose consumption in the male Wister rat brain as measured by PET. METHODS: Fourteen male Wistar normoglycemic rats were studied. The input function consisted of seventeen blood samples drawn manually from the femoral artery. Glucose uptake values were calculated using the input function resulting from the arterial blood samples and the tissue time-activity curve derived from the PET images. The estimated glucose consumption rate (Ki) based on the 2-tissue compartment model (2TCM) served as the standard for comparisons with the values calculated by the Patlak analysis and with the fractional uptake rate (FUR), standardized uptake value (SUV) and glucose corrected SUV (SUVglu). RESULTS: No significant difference between the standard Ki and the Patlak Ki was observed. The standard Ki was also found to have strong correlations and concordance with the Ki value estimated by the Patlak analysis. The FUR method presented an excellent correlation with the Ki value obtained by the 2TCM/Patlak analyses, in contrast to the SUV or SUVglu. CONCLUSIONS: From a methodological point of view, the present findings confirm the theoretical limitations of the cerebral SUV and SUVglu as a substitute for Ki in the estimation of glucose consumption in the brain. Our data suggest that the FUR is the surrogate to Ki. |
| first_indexed | 2024-12-11T05:31:02Z |
| format | Article |
| id | doaj.art-0c9c3bc89a9045a9ae5770633f29859b |
| institution | Directory Open Access Journal |
| issn | 1980-5322 |
| language | English |
| last_indexed | 2024-12-11T05:31:02Z |
| publisher | Elsevier España |
| record_format | Article |
| series | Clinics |
| spelling | doaj.art-0c9c3bc89a9045a9ae5770633f29859b2022-12-22T01:19:25ZengElsevier EspañaClinics1980-53227410.6061/clinics/2019/e1273S1807-59322019000100277Comparison of different quantification methods for 18F-fluorodeoxyglucose-positron emission tomography studies in rat brainsSilvana PrandoCamila de Godoi CarneiroCecil Chow RobilottaMarcelo Tatit SapienzaOBJECTIVES: This study aimed to evaluate several methods to estimate glucose consumption in the male Wister rat brain as measured by PET. METHODS: Fourteen male Wistar normoglycemic rats were studied. The input function consisted of seventeen blood samples drawn manually from the femoral artery. Glucose uptake values were calculated using the input function resulting from the arterial blood samples and the tissue time-activity curve derived from the PET images. The estimated glucose consumption rate (Ki) based on the 2-tissue compartment model (2TCM) served as the standard for comparisons with the values calculated by the Patlak analysis and with the fractional uptake rate (FUR), standardized uptake value (SUV) and glucose corrected SUV (SUVglu). RESULTS: No significant difference between the standard Ki and the Patlak Ki was observed. The standard Ki was also found to have strong correlations and concordance with the Ki value estimated by the Patlak analysis. The FUR method presented an excellent correlation with the Ki value obtained by the 2TCM/Patlak analyses, in contrast to the SUV or SUVglu. CONCLUSIONS: From a methodological point of view, the present findings confirm the theoretical limitations of the cerebral SUV and SUVglu as a substitute for Ki in the estimation of glucose consumption in the brain. Our data suggest that the FUR is the surrogate to Ki.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322019000100277&lng=en&tlng=enQuantification[18F]FDGSUVFURKi |
| spellingShingle | Silvana Prando Camila de Godoi Carneiro Cecil Chow Robilotta Marcelo Tatit Sapienza Comparison of different quantification methods for 18F-fluorodeoxyglucose-positron emission tomography studies in rat brains Clinics Quantification [18F]FDG SUV FUR Ki |
| title | Comparison of different quantification methods for 18F-fluorodeoxyglucose-positron emission tomography studies in rat brains |
| title_full | Comparison of different quantification methods for 18F-fluorodeoxyglucose-positron emission tomography studies in rat brains |
| title_fullStr | Comparison of different quantification methods for 18F-fluorodeoxyglucose-positron emission tomography studies in rat brains |
| title_full_unstemmed | Comparison of different quantification methods for 18F-fluorodeoxyglucose-positron emission tomography studies in rat brains |
| title_short | Comparison of different quantification methods for 18F-fluorodeoxyglucose-positron emission tomography studies in rat brains |
| title_sort | comparison of different quantification methods for 18f fluorodeoxyglucose positron emission tomography studies in rat brains |
| topic | Quantification [18F]FDG SUV FUR Ki |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322019000100277&lng=en&tlng=en |
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