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• W4376107502 abstract "Abstract Purpose The pituitary gland has the fourth highest physiologic avidity of [68Ga]-DOTATATE. In order to guide our understanding of [68Ga]-DOTATATE PET in clinical contexts, accurate characterization of the normal pituitary gland is first required. This study aimed to characterize the normal pituitary gland using dedicated brain [68Ga]-DOTATATE PET/MRI as a function of age and sex. Methods A total of 95 patients with a normal pituitary gland underwent brain [68Ga]-DOTATATE PET examinations for the purpose of diagnosing CNS SSTR2 positive tumors (mean age: 58.9, 73% female). Maximum SUV of the pituitary gland was obtained in each patient. SUV of superior sagittal sinus was obtained to calculate normalized SUV score (SUVR) of the gland. The anatomic size of the gland was collected as maximum sagittal height (MSH). Correlations with age and sex were analyzed. Results The mean SUV and SUVR of the pituitary gland were 17.6 (range: 7-59.5, SD = 7.1) and 13.8 (range: 3.3–52.6, SD = 7.2), respectively. Older females had significantly higher SUV of the pituitary gland compared to younger females. When stratified by age and sex, both older and younger females had significantly higher pituitary SUV than older males. SUVR did not differ significantly by age or sex. MSH of the pituitary gland in younger females was significantly greater than in younger males at all age cutoffs. Conclusion This study provides an empiric profiling of the physiological [68Ga]-DOTATATE avidity of the pituitary gland. The findings suggest that SUV may vary by age and sex and can help guide the use of [68Ga]-DOTATATE PET/MRI in clinical and research settings. Future studies can build on these findings to investigate further the relationship between pituitary biology and demographic factors." @default.
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• W4376107502 date "2023-05-09" @default.
• W4376107502 modified "2023-09-30" @default.
• W4376107502 title "[68Ga]-DOTATATE PET/MR-based Evaluation of Physiologic Somatostatin Receptor 2 Expression in the Adult Pituitary Gland as a Function of Age and Sex in a Prospective Cohort." @default.
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• W4376107502 doi "https://doi.org/10.21203/rs.3.rs-2899319/v1" @default.
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