نتایج جستجو برای: positron emission tomography pet

تعداد نتایج: 365456  

Arman Rahmim George Loudos Mohammad Reza Ay Mojtaba Shamsaie Zafarghandi Parham Geramifar,

  Combined PET/CT scanners now play a major role in medicine for in vivo imaging in oncology, cardiology, neurology, and psychiatry. As the performance of a scanner depends not only on the scintillating material but also on the scanner design, with regards to the advent of newer scanners, there is a need to optimize acquisition protocols as well as to compare scanner ...

2016
Shuguang Han Xiaopeng Wang Kai Xu Chunfeng Hu Faik Ilik.

Crossed cerebellar diaschisis (CCD) describes a depression of oxidative metabolism glucose and blood flow in the cerebellum secondary to a supratentorial lesion in the contralateral cerebral hemisphere. PET/MR has the potential to become a powerful tool for demonstrating and imaging intracranial lesions .We herein report 3 cases of CCD imaging using a tri-modality PET/CT–MR setup for investigat...

Journal: :Nuclear Medicine Review 2021

Breast cancer is the most common malignancy in women and among indications of oncologic positron emission tomography (PET) studies. In this review article, updated anatomical, pathological, clinical information about breast were provided for Nuclear Medicine physicians to better understand interpret PET images a literature on use imaging was summarized.

Journal: :Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology 1995
S L Bacharach I Buvat

Quantitation in cardiac positron emission tomography (PET) and single-photon emission computed tomography (SPECT) depends on being able to correct for several physical factors that tend to distort the data. One of the most important of these corrections is the correction for attenuation. For PET, cardiac attenuation correction is a reality, although certain problems remain to be solved. For SPE...

Journal: :Physics in medicine and biology 2002
Irène Buvat

Knowledge of the statistical properties of reconstructed single photon emission computed tomography (SPECT) and positron emission tomography (PET) images would be helpful for optimizing acquisition and image processing protocols. We describe a non-parametric bootstrap approach to accurately estimate the statistical properties of SPECT or PET images whatever the noise properties in the projectio...

Journal: :AJNR. American journal of neuroradiology 1983
M Hiraiwa C Nonaka T Abe M Iio

A 12-year-old Japanese girl with systemic lupus erythematosus is described. Positron emission tomography (PET) showed low attenuation in the right frontotemporal area at relapse, which disappeared at remission. Findings on electroencephalography coincided with those on PET. On x-ray CT there were no specific findings. The PET findings were thought to be due to cerebral vasculitis.

2010
Tarun Jindal Arvind Kumar Rakesh Kumar Roman Dutta Monika Meena

INTRODUCTION Mucoepidermoid carcinoma of the tracheobronchial tree is rare. Such tumors usually present with signs and symptoms of bronchial obstruction. Histologically, they can be classified as high-grade or low-grade tumors. Experience of imaging these tumors with 18fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET-CT) is limited. We present three cases of this...

Journal: :Journal of Nippon Medical School = Nippon Ika Daigaku zasshi 2008
Masahiro Mishina

Positron emission tomography (PET) is a nuclear medicine imaging technique. Through the use of various radiopharmaceuticals, PET allows in vivo imaging of regional cerebral functions, including cerebral blood flow, molecular metabolism, and receptor binding capacity. PET is useful not only for diagnosis and therapeutic planning but also for neurological science research.

2003
T. C. McLoud

The purpose of the review is to: (a) provide information concerning the physiology of lung cancer imaging with fluorodeoxyglucose (FDG) positron emission tomography (PET); (b) clarify the role of FDG–PET in the diagnosis of solitary pulmonary nodules; (c) summarise the accuracy of PET scanning in the staging of lung cancer both in regard to mediastinal nodal staging and the staging of distant m...

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