Radiation Protection Knowledge, Attitude, and Practice (KAP) in Interventional Radiology.

Objectives: Due to increasing cardiac disease and its mortality rate, the frequency of cardiac imaging has grown and, as a result, interventional cardiologists potentially receive high radiation doses in cardiac examinations. This study aimed to assess the knowledge, attitude, and practice (KAP) level of radiation protection (RP) among interventional radiology staff in Iranian health care centers across the country.

Methods: We used a validated questionnaire survey consisting of 30 multiple-choice questions to perform a cross-sectional study.

Induction of Apoptosis and Inhibition of Invasion in Gastric Cancer Cells by Titanium Dioxide Nanoparticles.

Objectives: Nanoparticles induce oxidative stress in cells and damage them through the cell membrane and DNA damage, eventually resulting in cell death. This study aimed to evaluate the effect of titanium dioxide (TiO) nanoparticles on apoptosis induction and invasion of gastric cancer cell line, MKN-45.

Methods: We used the MTT assay to assess proliferation of MKN-45 gastric cancer cells after exposure to different forms of TiO nanoparticles including amorph, brookite, anatase, and rutile coated with polyethylene glycol (PEG) and bovine serum albumin (BSA).