PURPOSE To compare the conspicuity of malignant lesions between FDG PET/CT and a new simultaneous, time-of-flight (TOF) enabled PET/MRI scanner. METHODS All patients underwent a single-injection of FDG, followed by a dual imaging protocol consisting of PET/CT followed by TOF PET/MRI. PET/CT and PET/MRI images were evaluated by two readers independently for areas of FDG uptake compatible with ...

UNLABELLED Recently, some studies have shown that delayed scanning with (18)F-FDG PET may help to differentiate malignant from benign pancreatic lesions. However, no study has evaluated the relationship between temporal changes in (18)F-FDG uptake and expression of hexokinase or glucose transporter. METHODS Twenty-one consecutive patients with pancreatic cancer were studied preoperatively by ...

Lymphoma presenting with enlarged adrenal glands is not common. According to the literature, most adrenal lymphomas do not have extra-adrenal sites. We examined a 47-year-old male patient because of abdominal pain-an unusual presentation of adrenal lymphoma. Following ultrasonographic examination that showed bilateral massively enlarged adrenal glands, the patient underwent F-18 FDG PETCT. Writ...

Sclerosing mediastinitis is a rare, benign disorder that is often indistinguishable from malignancy by conventional imaging techniques. The value of fluorodeoxyglucose positron emission tomography (FDG-PET) imaging in the diagnosis of this disorder has not been elucidated. Recently, a few studies have reported the use of dual-phase FDG-PET imaging in the diagnosis of malignancies. The dual phas...

Vertebral fractures (VF) and sacral insufficiency fractures (SIFs) are very common in osteoporotic patients with low-back pain and are often overlooked in clinical practice. Plain radiography is usually the first examination. However, on many occasions, further evaluation with CT scan, MRI and nuclear medicine studies is necessary. Nuclear medicine examinations have important applications for t...

The purpose of this study was to estimate average radiation exposure from (18)F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) examinations and to analyze possible factors affecting the radiation dose. A nation-wide questionnaire survey was conducted involving all institutions that operate PET/CT scanners in Korea. From the response, radiation doses from inje...