However, in the setting of MEN1, studies examining the efficacy of 18F]FCH PET/CT compared to other imaging techniques like parathyroid US and [99mTc]-MIBI scintigraphy in pinpointing parathyroid tumors are relatively scarce and challenging due to limited sample sizes and patient heterogeneity, often spanning an extensive timeframe. The gene discussed is MEN1; the disease is tumor of parathyroid gland.