conclusions these findings suggest that exposure to tc-99m could induce a radio-adaptive response against the exposure of tl-201. background low dose radiation will induce adaptation and following exposure to an adaptive dose, the cells are more resistance to following challenging doses. this phenomenon is known as radio-adaptive response. the aim of this study was to investigate the percentage...

objective: the aim of this study was to evaluate the influences of reconstruction and attenuation correction on the differences in the radioactivity distributions in 123i brain spect obtained by the hybrid spect/ct device. methods: we used the 3-dimensional (3d) brain phantom, which imitates the precise structure of gray mater, white matter and bone regions. it was filled with 123i solution (20...

conclusions the prevalence of undiagnosed ihd in the hd patients was considerable. we, therefore, suggest that ihd be assessed in hd patients, especially those at high risk due to positive family history of cad, hypertension, left ventricular hypertrophy, diabetes mellitus, kt/v < 1.2, low ferritin levels, and high levels of intact parathyroid hormone. results sixty-nine hd patients were studie...

2,3,7,8-tetrachlorodibenzo-p-dioxin (tcdd) is a by-product o f t he trichlorophenol (herbicide) production and is also produced through a variety of combustion processes. it appears that tcdd is a ubiquitous chemical, particularly in industrialised countries, and the liver is the target organ of its toxicity. the prominent hepatotoxic effect of tcdd is progressive centrilobular necrosis. the is...

Introduction:Patients with the coronary slow flow phenomenon (SCF) frequently experience angina episodes. The purpose of this study was to determine efficacy of nicorandil in myocardial perfusion in patients with SCF. Methods: Twenty patients (50.85 ± 12.96 y) with SCF were studied.  We evaluate coronary slow flow according to protracted thrombolysis in m...

Myocardial Perfusion Imaging (MPI) is a non-invasive modality with proven diagnostic and prognostic utility in coronary artery disease. We present case of Transthyretin Amyloid Cardiomyopathy (ATTR-CM) where MPI findings were vastly different from Transthoracic Echocardiogram (TTE) Cardiac Magnetic Resonance (CMR). A 78-year-old gentleman presented atypical chest pain to rule out ischemic heart...

Introduction: It is recommended that the physician apply at least a semi-quantitative segmental scoring system in myocardial perfusion SPECT.  We aimed to assess the agreement between automated semi-quantitative analysis using QPS (quantitative Perfusion SPECT) software and visual approach for calculation of summed stress  score (SSS), summed rest score (SRS) and summed difference score (SDS). ...

Introduction:Gated myocardial perfusion SPECT has diagnostic and prognostic values in coronary artery disease (CAD). We tried to determine prognostic values of the left ventricular perfusion & functional indices as well as transient left ventricular dilation (TID) derived from gated myocardial perfusion SPECT. Methods: 1820patients who underwent gated myo...

Coronary artery disease (CAD) is an important cause of morbidity and mortality worldwide. Perfusion abnormalities precede wall motion abnormalities, ECG changes, angina in the etiology CAD. myocardial perfusion imaging (MPI) can detect alterations due to pathology at sites such as endothelium, microvasculature, epicardial coronary arteries. Thus, it measures universal burden ischemic heart (IHD...

A glioma is a type of intra-axial brain tumor originating from the glial cells. Making up about one-third all tumors, timely diagnosis alongside correct grading and subsequent therapy planning crucial. Magnetic Resonance Imaging an established method for tumors. Arterial Spin Labeling (ASL) Perfusion allows non-contrast enhanced visualization hyper- or hypoperfusion. Commonly, cell swelling occ...