Heart on FDG PET/CT
Abstract For oncologic FDG PET/CT scans, the patient is in the fasted state and the myocardium has variable utilization of glucose versus other sources of energy for metabolism. This results…
Muscle and Nerve on FDG PET/CT
Abstract Muscles and nerves may demonstrate benign physiologic FDG avidity and must be distinguished from malignancy. This chapter describes common appearances of benign FDG avidity in muscles and nerves and…
Thymus Masses on FDG PET/CT
Abstract FDG avidity in the thymus is often benign thymic rebound. The characteristic triangular shape of benign thymus will distinguish it from malignancy. Thymic malignancies are uncommon, but include thymic…
FDG PET/CT Performance and Reporting
Abstract Optimal FDG PET/CT relies upon proper performance of the examination and reporting of the results. This chapter discusses proper patient preparation for FDG PET/CT, quantification of FDG uptake, and…
Pleura on FDG PET/CT
Abstract FDG avidity in the pleura may be malignant, such as metastases and mesothelioma, or benign, such as postpleurodesis inflammation. Corresponding CT findings, such as high attenuation from prior talc…
Brain on FDG PET/CT
Abstract The brain demonstrates substantial physiologic FDG avidity. Malignancy involving the brain, including metastases, lymphoma, and primary gliomas, may be detected either as foci of FDG avidity greater than physiologic…
Skin and Breast on FDG PET/CT
Abstract The skin and subcutaneous tissues are common sites of inflammatory lesions which must be distinguished from malignancy. Visual inspection of FDG-avid skin lesions is often needed to make this…
Solitary Lucent Defect
Abstract A solitary lucent defect may result from a necrotic cavity, cyst, pneumatocele, or a loculated hydropneumothorax, but of these possibilities, a necrotic cavity is the most common. A necrotic…
Solitary Pulmonary Nodule
Abstract The solitary pulmonary nodule is a common challenge for the radiologist. Size, location, and attenuation are important characteristics in determining perception and detectability of a nodule. Computed tomography (CT)…
Multiple Lucent Lesions
Abstract Multiple lucent lesions are most often the result of infectious diseases. Multiple cavities frequently complicate virulent bacterial, tuberculous, and parasitic or fungal infections. Septic emboli cause multiple cavities that…
