background : the signal-averaged electrocardiography is a noninvasive method to evaluate the presence of the potentials generated by tissues activated later than their usual timing in the cardiac cycle. the purpose of this study was to demonstrate the correlation between the filtered qrs duration obtained via the signal-averaged electrocardiography and left ventricular dimensions and volumes an...

BACKGROUND PET/CT has recently been shown to be a viable alternative to traditional post-infusion imaging methods providing good quality images of 90Y-laden microspheres after selective internal radiation therapy (SIRT). In the present paper, first we assessed the quantitative accuracy of 90Y-PET using an anthropomorphic phantom provided with lungs, liver, spine, and a cylindrical homemade lesi...

atrial septal defect (asd) is a common congenital anomaly that has low surgical mortality and morbidity. we report a very rare case of a low-lying asd, combined with the drainage of the inferior vena cava and the left superior vena cava into the left atrium. this combination was associated with an unroofed coronary sinus. we also describe an iatrogenic surgical diversion of the inferior vena ca...

The distribution of radiation doses in cancer patients who receive radiotherapy treatment depends on the distance cancerous organ to source, type including density and atoms organ. Even though exposure is focused that will be irradiated, surrounding healthy organs still have a great chance getting exposure. Healthy can exposed within certain period time are thought opportunity experience metast...

Boron Neutron Capture Therapy (BNCT) is a relatively safer technology for killing cancer cells, one of which the Glioblastoma multiforme. One main components BNCT equipment collimator functions as an exit point epithermal neutron particles that hit cells. In addition to experimental method, research can be carried out by modeling, including using MCNPX software based on Monte Carlo Method. This...

background: congenital heart disease (chd) is the most common congenital anomaly in newborns. this study was performed to determine the live birth incidence of chd by ethnicity and sex in gorgan, northern iran. methods: in this longitudinal, hospital-based study, 18162 live births in dezyani hospital in gorgan, north of iran, were screened for chd, from 2007 through 2009. clinical examination, ...

mitochondria play an important role in energy production for the cell. the proper function of a myocardial cell largely depends on the functional capacity of the mitochondria.  therefore it is necessary to establish a novel and reliable method for a non-invasive assessment of mitochondrial function and metabolism in humans. although originally designed for evaluating myocardial perfusion, 99mtc...

abstract hypoplastic right ventricular is a rare congenital heart disease. a few cases have been reported. we presented a case with hypoplastic right ventricular and multiple associated anomaly (ventricular septal defect, atrial septal defect and pulmonary stenosis) in whom the main concern was whether biventricular repair or fontan type surgery would be the optimal management in this patient. ...

Dosimetry is the process of calculating the effective radioactive dose that is applied to tumors and organs respectively as a patient undergoes a peptide receptor radionuclide therapy. This work presents the novel application software ‘DoSE8’ that was developed from our group and that incorporates all necessary image processing steps (registration and segmentation) and data handling for (partly...

The fundamental physical quantity for relating all biologic effects to radiation exposure is the absorbed dose, the energy imparted per unit mass of tissue. Absorbed dose is expressed in units of joules per kilogram (J/kg) and is given the special name gray (Gy). Exposure to ionizing radiation may cause both deterministic and stochastic biologic effects. To account for the relative effect per u...