Bottom line In HF, higher-dose angiotensin-converting enzyme inhibitors (ACEIs), b-blockers (BBs), and angiotensin receptor blockers (ARBs) result in non-significant improvements in mortality, inconsistent decreases in HF hospitalizations, and more dizziness or hypotension (4% to 15%), dose reductions (20%), and stopping medication (2% to 8%). Starting patients on low doses and focusing on tole...

introduction:  skin  sparing  is  one  of  the  most  desirable  characteristics  of  high  energy  photon  beams. however, the photons emerging from the target of linacs are contaminated by secondary  electrons  as  a  result  of  their  interactions  with  air,  collimators,  flattening  filter  and  any  other  objects in their path. this phenomenon tends to increase the skin dose received b...

introduction: the aim of present study was to estimate effective dose from most common procedures performed in nuclear medicine departments of golestan province. methods: data of nuclear medicine procedures performed in 2 nuclear medicine departments in golestan province were collected during 4 years. effective dose, collective effective dose and effective dose per examination were calculated u...