Differences in Radiation Field According to Focal Spot Size

Radiation Dose Reduction without Compromise to Image Quality by Alterations of Filtration and Focal Spot Size in Cerebral Angiography

OBJECTIVE Different angiographic protocols may influence the radiation dose and image quality. In this study, we aimed to investigate the effects of filtration and focal spot size on radiation dose and image quality for diagnostic cerebral angiography using an in-vitro model and in-vivo patient groups. MATERIALS AND METHODS Radiation dose and image quality were analyzed by varying the filtrat...

Focal Spot, Spring 1995

The effect of focal spot size on the spatial resolution of variable resolution X-ray CT scanner

Background: A variable resolution X-ray (VRX) CT scanner provides a great increase in the spatial resolution. In VRX CT scanners, the spatial resolution of the system and its field of view (FOV) can be changed according to the object size. One of the main factors that limit the spatial resolution of VRX CT scanner is the effect of the X-ray focal spot. Materials and Methods: A theoreti...

Evaluation of Radiation Protection in Nuclear Medicine Department in Namazi Hospital According to Global Accepted Standards

Background & Objective: In the recent years, nuclear medicine has enjoyed remarkable growth thanks to such novel technologies as SPECT-CT and PET, which are utilized for the recognition of new detectable molecules and radiopharmaceutical medicines. Therefore, the current regulations on radiation protection require revision. Namazi Hospital of Shiraz is one of the first nuclear medicine center...

Hematological profile change in radiation field workers

Objectives: This study focuses on the hematological parameters change and age in radiation field workers. The study aimed to identify the effect of radiation on hematological parameters and their relation to age and duration of the experience in radiation field workers. Material and Methods: This study was conducted in the Physiology research center in collaboration with thalassemia and hemogl...