Transesophageal, endoscopic ultrasound (EUS)-guided fine-needle aspiration (FNA) and positron emission tomography (PET) scanning are new modalities for staging non-small cell lung cancer (NSCLC), the roles of which are still being defined. A 78-year-old man with a right lower lobe (RLL) mass and mediastinal adenopathy seen on CT scan had a PET scan that revealed only a RLL hypermetabolic area. ...

Jonasson, M. 2018. Towards Clinical Implementation of Dynamic Positron Emission Tomography in Neurodegenerative Diseases. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine 1429. 55 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0238-6. Alzheimer’s disease (AD) and Parkinson’s disease (PD) are the two most common neurodegenerative disorders world...

We estimate that 30% to 40% of radiation treatment plans for cancer patients are changed when positron emission tomography (PET) scan findings are factored into the plan. The most frequent changes are upstaging of disease and the finding of new distant metastases. When a tumor demonstrates high tracer uptake, the PET scan has high accuracy in staging and in determining recurrent disease. Howeve...

BACKGROUND A positron emission tomography (PET) scan after induction chemotherapy before preoperative chemoradiation and surgery for esophageal adenocarcinoma predicts outcomes. Some patients with progression on PET after induction chemotherapy had long-term overall survival (OS) when they were changed to alternative chemotherapy during radiation. METHODS This study retrospectively reviewed e...

BACKGROUND AND AIMS Retrospectively analyze the sensitivity of 18F-fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET-CT) in the diagnosis of gastric malignancy compared with gastric endoscopy in persons with nonspecific symptoms and evaluate the necessity of 18F-FDG PET-CT scan before surgery. MATERIALS AND METHODS A total of 53 patients with gastric malignancy ...

UNLABELLED Our purpose was to evaluate the ability of FDG PET to differentiate recurrent tumor from posttherapy radiation necrosis. METHODS MR images, PET scans, and medical records of 84 consecutive patients with a history of a treated intracranial neoplasm were evaluated retrospectively. In all patients, recurrent tumor or radiation necrosis was suggested by clinical or MR findings. Metabol...

PET Case: Incidental Lung Cancer This 80-year-old woman was being followed for a left adrenal mass found on an abdominal CT scan performed to evaluate abdominal pain (Fig. 1). A PET scan was ordered to further evaluate this lesion. The PET showed no abnormal uptake in the adrenal mass (Fig. 2), but an isolated focus of intense increased FDG uptake was noted in the upper lobe of the right lung (...

For liver metastases (LM), image guided percutaneous ablative procedures such as radiofrequency ablation (RFA), laser induced thermal therapy (LITT) and trans-arterial chemo-embolisation (TACE) are increasingly being used because they are relatively safer, less invasive and equally effective. CT scan guided interstitial brachytherapy (IBT) with a single large dose of radiation by high dose rate...

A 68 years old man with prostate carcinoma was referred for 68Ga-PSMA PET/CT scan because of recent significant rise of PSA. He complained of muscle weakness and fatigue, since 3 weeks before the scan, without dyspnea or shortness of breath. In his 68Ga-PSMA-611 PET/CT study, widespread skeletal metastasis, as well as liver involvement were noticed. Also, multiple bilatera...

PURPOSE To evaluate the role of (18)F-flurodeoxiglucose positron emission tomography/computed tomography ((18)F-FDG-PET/CT) in predicting malignancy of thyroid nodules with indeterminate cytology. PATIENTS AND METHODS We analysed 87 patients who have been scheduled to undergo surgery for thyroid nodule with indeterminate cytology. All patients underwent (18)F-FDG-PET/CT, multiparametric neck ...