Positron emission mammography with tomographic acquisition using dual planar detectors: initial evaluations
نویسندگان
چکیده
منابع مشابه
Clinical utility of positron emission mammography.
Several imaging modalities have been introduced over recent years to better screen for and stage breast cancer. Positron emission mammography (PEM) has been approved by the US Food and Drug Administration and introduced into clinical use as a diagnostic adjunct to mammography and breast ultrasonography. PEM has higher resolution and a more localized field of view than positron emission tomograp...
متن کاملScatter correction for positron emission mammography.
In this paper we present a scatter correction method for a regularized list mode maximum likelihood reconstruction algorithm for the positron emission mammograph (PEM) that is being developed at our laboratory. The scatter events inside the object are modelled as additive Poisson random variables in the forward model of the reconstruction algorithm. The mean scatter sinogram is estimated using ...
متن کاملPositron Emission Tomographic Imaging in Stroke
T here is increased incidence of cognitive dysfunction after stroke. One in 10 develops vascular cognitive impairment after a single stroke and 1 in 3 after recurrent stroke. 1 Risk factors that predispose to atherosclerosis are also independently associated with an increased risk of dementia. In a review, we summarized the evidence supporting an increased risk of developing Alzheimer disease (...
متن کاملDiagnostic Accuracy of Positron Emission Mammography with 18F-fluorodeoxyglucose in Breast Cancer Tumor of Less than 20 mm in Size
Objective(s): To investigate the diagnostic accuracy of positron emission mammography (PEM) and positron emission tomography/computed tomography (PET/CT) for small breast tumors of less than 20 mm in size.Methods: The study was conducted on a total of 100 subjects (i.e., 50 patients with pathologically proven breast cancer and 50 normal cases of medical screening). The total number of tumors wa...
متن کاملPositron emission mammography (PEM): reviewing standardized semiquantitative method
PURPOSE To validate semiquantitative analysis of positron emission mammography (PEM). METHODS Fifty women with histologically confirmed breast lesions were retrospectively enrolled. Semiquantitative uptake values (4 methods), the maximum PEM uptake value (PUVmax), and the lesion-to-background (LTB) value (3 methods) were measured. LTB is a ratio of the lesion's PUVmax to the mean background; ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics in Medicine and Biology
سال: 2004
ISSN: 0031-9155,1361-6560
DOI: 10.1088/0031-9155/49/11/022