The development and use of positron emission tomography (PET) radiotracers has tremendous potential for the advancement of oncologic imaging. There has been preclinical development on hundreds of PET radiotracers, and the most promising have advanced into clinical trials. As of…
All imaging modalities may be compromised by artifacts which obscure malignancy or mimic malignancy. 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) may be compromised by a multitude of artifacts, primarily associated with technical performance of PET/CT scanners and unexpected biodistribution…
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18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) has become an important modality in the evaluation of lymph nodes in oncology patients, including the central role FDG PET/CT plays in managing patients with lymphoma and the ability for FDG PET to…
The male pelvis on 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) is more straightforward than the female pelvis. The testes may demonstrate physiologic FDG avidity. FDG-avid foci within the prostate may represent benign focal prostatitis or prostate cancer. Testes You’re…
The female pelvis can be difficult to evaluate on 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT). The endometrium and ovaries may demonstrate physiologic FDG avidity. Benign leiomyomata of the myometrium may be FDG avid. In addition, physiologic FDG avidity in…
The urinary tract is one the most difficult organ systems of the body to evaluate on F18-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT). This is because of physiologic excretion of FDG through the kidneys, ureters, and bladder. FDG in urine…
The peritoneum is a membranous lining of the abdominal cavity and organs. The parietal peritoneum lines the abdominal cavity, whereas the visceral peritoneum lines the intraperitoneal organs. Between layers of the peritoneum is the peritoneal cavity, a potential space. This…
The gastrointestinal (GI) tract poses challenges for interpretation on 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT). The esophagus, stomach, and small and large bowel may all demonstrate physiologic FDG avidity, and physiologic FDG avidity may be even more intense than…
The differential diagnosis for adrenal lesions includes malignant neoplasms, benign neoplasms, and benign nonneoplastic processes. The most common adrenal malignancies by far are metastases. Additional adrenal malignancies include lymphoma, malignant pheochromocytomas, and adrenal cortical carcinomas. The most common benign adrenal…