Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, NY, NY, USA Current MR/PET systems employ segmentation of MR images and subsequent assignment of empirical attenuation map values for quantitative PET reconstruction. In this current study we examine the quantitative differences between our carotid artery imaging protocol on both a PET/CT and an MR/PET scann...

Management of locally advanced colon cancer metastases is challenging and operation carries an increased risk of morbidity and mortality. The knowledge of exact sites of involvement can aid the surgeon to make a decision regarding complete resection or palliative therapy. PET/CT scan is an advantage in this setting because metabolic alterations often precede the anatomic changes; moreover, it c...

necrotizing fasciitis is a part of a spectrum of necrotizing soft tissue infections that usually follow a surgical intervention or a chronic / acute medical illness. diagnosis is often based on symptoms which classically start within hours after an injury. there are no reports on the use of pet/ct in this condition. sparing reports of its association in patients with malignancy (ca of colon and...

BACKGROUND An accurate, early diagnosis and treatment of adenomatous polyp can curtail progression to colorectal cancer. F-18 fluorodeoxyglucose positron emission tomography (F-18 FDG PET) reveals the biochemical changes associated with the development of many cancers which precede the appearance of gross anatomical changes that may be visualized during surgical resection or via imaging with MR...

BACKGROUND Tc-99m methoxy-isobutyl-isonitrile (MIBI) has been reported to be a useful tracer in patients with multiple myeloma (MM). Few articles have reported the potential value of fluorine-18 fluorodeoxyglucose positron emission tomography (FDG-PET) in the evaluation of MM. Therefore, the purpose of this study was to compare the diagnostic abilities of the MIBI scan and the FDG-PET scan in t...

We describe the evaluation of the registration of Positron Emission Tomography (PET) scans with X-ray Computed Tomography (CT) scans of the human brain. A CT scan and a PET scan of the same person were obtained with fiducial markers placed on the person's head. The CT scan and the PET scan were then registered, first by using the fiducial markers, and next by applying the registration method cu...

We describe the diagnostic contribution of [(18)F]fluoro-deoxyglucose (FDG) positron emission tomography (PET) scan in 58 consecutive cases of fever of unknown origin (FUO) and compare this new approach with gallium scintigraphy. This investigation was performed from March 1996 through October 1998 at Gasthuisberg University Hospital in Leuven, Belgium. A final diagnosis was established for 38 ...

Objective(s): It is difficult to investigate the whole-body distribution of an orally administered drug by means of positron emission tomography (PET), owing to the short physical half-life of radionuclides, especially when 11C-labeled compounds are tested. Therefore, we aimed to examine the whole-body distribution of donepezil (DNP) as an acetylcholinesterase inhibitor by means of 11C-DNP PET ...

Introduction : We compared the accuracy of staging by whole body coincidence mode 18F-FDG PET-CT scan with thoracic and abdominal computed tomography scan. Material and Methods : Histopathologically proven newly diagnosed 109 patients (in 12 months) of lung carcinoma underwent whole body (base of the skull to upper third of thigh) FDG PET scan and baseline thoracic and abdominal CT. Results : F...

Positron Emission Tomography (PET) scan images are one of the bio medical imaging techniques similar to that of MRI scan images but PET scan images are helpful in finding the development of tumors. The PET scan images requires expertise in the segmentation where clustering plays an important role in the automation process. The segmentation of such images is manual to automate the process cluste...