Functional imaging of adrenal cortex

Area of Science:

• Endocrinology
• Nuclear Medicine
• Radiology

Background:

• Increased detection of adrenal lesions via high-resolution imaging necessitates accurate differential diagnosis.
• Computed tomography (CT) and magnetic resonance imaging (MRI) have limitations in specificity for adrenal lesions.

Purpose of the Study:

• To highlight the role of nuclear medicine scans in the differential diagnosis of adrenal lesions.
• To demonstrate the utility of specific radiotracers in characterizing adrenal lesions and guiding management.

Main Methods:

• Review of the application of nuclear medicine imaging techniques for adrenal lesions.
• Discussion of radiotracers including iodine-131 (¹³¹I)-norcholesterol, carbon-11 (¹¹C)-metomidate, and fluorine-18 (¹⁸F)-fludeoxyglucose.

Main Results:

• Nuclear medicine scans offer improved specificity compared to CT and MRI for adrenal lesions.
• These scans aid in distinguishing benign from malignant adrenal masses.
• Nuclear imaging helps lateralize disease in hypersecretory conditions and informs therapeutic strategies.

Conclusions:

• Nuclear medicine imaging, utilizing specific radiotracers, is crucial for the comprehensive evaluation and management of adrenal lesions.
• These techniques enhance diagnostic accuracy and therapeutic decision-making in endocrinology and oncology.