The general-purpose Monte Carlo radiation transport code MCNPX has been used to simulate photon transport and energy deposition in anthropomorphic phantoms due to the x-ray exposure from the Philips iCT 256 and Siemens Definition CT scanners, together with the previously studied General Electric 9800. The MCNPX code was compiled with the Intel FORTRAN compiler and run on a Linux PC cluster. A p...

Due to interesting therapeutic properties of 177Lu and tumor avidity of tetraphenyl porphyrins (TPPs), 177Lu-tetraphenyl porphyrin was developed as a possible therapeutic compound. 177Lu of 2.6-3 GBq/mg specific activity was obtained by irradiation of natural Lu2O3 sample with thermal neutron flux of 4 × 1013 n.cm-2.s-1. Tetraphenyl porphyrin was synthetized and labeled with 177Lu. Radiochemica...

the incidence and prevalence of obesity are fast increasing worldwide. various indices have been used to measure and assess obesity. the body mass index (bmi) is the most common and practical of these indices. overweight and obesity exert considerable adverse effects on the cardiovascular system. these effects are mediated through various neurohormonal and cytokine pathways, most of which are i...

objectives: anemia is prevalent in heart failures and is an independent risk factor for adverse clinical outcomes in patients with chf. the aim of the present study was to determine the prevalence of anemia in elderly with systolic heart failure hospitalized in alborz hospital of karaj in 2009. methods & materials: this is a descriptive retrospective study that reviewed 154 medical records of e...

hydatid cyst of heart is uncommon. we are reporting a case of 14 years old male with liver, lung and heart hydatidosis. diagnosis was confirmed by imaging studies and histological evaluation of surgical specimens.

conclusions the cardiac grafts at 5 months' post-htx follow-up were characterized by normal lv dimensions and ef. also, rv dysfunction and tricuspid regurgitation were frequent findings, but they were not associated with the clinical signs of congestive heart failure, morbidity, and mortality in the majority of our patients. background in patients with advanced heart failure, significant improv...

patients and methods forty five young female volunteer athletes were included and received different training regimens (endurance-training, strength training and concurrent groups) for a 10 week period as study intervention. standard color doppler echocardiography was performed for assessment of the left ventricular activity. results as a result, 45 athletes ended the study training regimens. m...

Neurosurg 16: 378-418, 1969 20. EklSf B, Lassen NA, Nilsson L et al: Regional cerebral blood flow in the rat measured by the tissue sampling technique; a critical evaluation using four indicators C"-antipyrine, C"ethanol, H'-water and xenon". Acta Physiol Scand 91: 1-10, 1974 21. Eckman WW, Phair RD, Fenstermacher JD et al: Permeability limitation in estimation of local brain blood flow with (C...

Neurosurg 16: 378-418, 1969 20. EklSf B, Lassen NA, Nilsson L et al: Regional cerebral blood flow in the rat measured by the tissue sampling technique; a critical evaluation using four indicators C"-antipyrine, C"ethanol, H'-water and xenon". Acta Physiol Scand 91: 1-10, 1974 21. Eckman WW, Phair RD, Fenstermacher JD et al: Permeability limitation in estimation of local brain blood flow with (C...

The calculation of absorbed dose from internally incorporated radionuclides is based on the so-called specific absorbed fractions (SAFs) which represent the fraction of energy emitted in a given source region that is absorbed per unit mass in a specific target organ. Until recently, photon SAFs were calculated using MIRD-type mathematical phantoms. For electrons, the energy released was assumed...