In this report, we present the case of a patient with cervical adenocarcinoma progressive right lower-extremity pain and weakness. Electromyography lower extremities subsequent ultrasonographic imaging complementarily demonstrated findings considered suspicious for perineural spread malignancy to lumbosacral plexus sciatic nerve. This possibility was confirmed by magnetic resonance (MRI) fluoro...

After a brief review of the history of time-of-flight (TOF) positron emission tomography (PET) instrumentation from the 1980s to present, the principles of TOF PET are introduced, the concept of time resolution and its effect on TOF gain in signal-to-noise ratio (SNR) are discussed. The factors influencing the time resolution of a TOF PET scanner are presented, with focus on the intrinsic prope...

neurolymphomatosis is a rare manifestation of non-hodgkin lymphoma characterized by infiltration of peripheral nerves, nerve roots, plexus and cranial nerves by malignant lymphocytes. this report presents positron emission tomography/computed tomography (pet/ct)imaging with 2-deoxy-2-18f-fluoro-d-glucose (18f-fdg) in 3 cases of non-hodgkin lymphoma with nerve infiltration, including one newly d...

Few data exist on the medico-economic usefulness of Positron Emission Tomography (PET) in the management of metachronous liver metastases from colorectal cancer. The study was designed to assess the cost-effectiveness of PET in the diagnosis and staging of patients with metachronous liver metastases of colorectal cancer using a decision analysis model. Methods: Two alternatives were compared: c...

The purpose of this paper was to systematically search the literature on (18)F-fluorodeoxyglucose positron emission tomography ((18)F-FDG-PET) in the management of chronic obstructive pulmonary disease (COPD) and to provide a concise review of the reported results. Papers were searched through PubMed, EMBASE and Cochrane Library using the MESH terms "pulmonary disease, chronic obstructive", "pu...

BACKGROUND Integrated 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) is widely performed for staging solitary pulmonary nodules (SPNs). However, the diagnostic efficacy of SPNs based on PET/CT is not optimal. Here, we propose a method of detection based on PET/CT that can differentiate malignant and benign SPNs with few false-positives. METHOD Our pro...

Recent studies have shown limitations of morphological imaging in staging mediastinal lymph node involvement in lung cancer. In contrast to computed tomography (CT), which depends primarily on anatomical imaging features, positron emission tomography (PET) with 18-fluorodeoxyglucose (FDG) depends mainly on the metabolic characteristics of a tissue for the diagnosis of disease. We have performed...

An 18-year-old male patient with Hodgkin's lymphoma stage IVB (HL-IVB), is presented. On a follow-up examination a splenic ultrasound scan showed the presence of multiple intense nodules. The gallium-67 citrate, single photon emission tomography scan was negative, while positron emission tomography/computerized tomography (PET/CT) scan with fluoro-18-fluordeoxyglucose was strongly positive. Mas...

eart diseases are one of the leading cause of death in developed countries, for this reason an early diagnosis of the diseases is absolutely necessary. In order to do so, several tools are used, such as, electrocardiogram (EKG), chest X-Ray (Computed Tomography, CT), blood and stress tests, echocardiogram (ECG), cardiac magnetic resonance (MRI) and nuclear medicine (Single Photon Emission Compu...

In this paper, we extend a nonnegatively constrained iterative method and three stopping rules for its iterations to the medical imaging inverse problems of computed tomography (CT), positron emission tomography (PET), and single photon emission computed tomography (SPECT); the iterative method and stopping rules were introduced for use in astronomical imaging. The paper begins with a brief int...