DMI TEST-QUESTIONS WITH DETAILED
VERIFIED AND 100% ACCURATE ANSWERS
NCPR
National Council on Radiation Protection and Measurements
ALARA
as low as reasonably achievable
TLD
thermoluminescent dosimeter
Diagnostic protective x-ray tube housing
a protective housing that reduces leakage radiation during use
Secondary radiation
scatter and leakage
Name 3 types of radiation exposure that are of concern when protective barriers are
designed
Primary radiation (useful beam), leakage and scatter radiation
GSD
genetically significant dose
ESD
entrance skin dose
, MMD
mean marrow dose
Sentinal Event
any skin dose exceeding 15 Gy and always followed by severe skin damage
mGyt-cm
the unit to measure the output intensity
SSD
source to skin distance
What tissues are the most radiosensitive?
RBM, colon, lung, stomach and breast
What is the approximate half value layer of diagnostic x-rays in soft tissue?
4 cm
Fetal Dl
the estimated amount of radiation received during radiographic examination during pregnancy
Major organogenesis
Time approximately of pregnancy from the 2nd week to the 10th week
Shadow Shield
Shield that is suspended over the region of interest; it casts a shadow over the patient's
reproductive organs.
VERIFIED AND 100% ACCURATE ANSWERS
NCPR
National Council on Radiation Protection and Measurements
ALARA
as low as reasonably achievable
TLD
thermoluminescent dosimeter
Diagnostic protective x-ray tube housing
a protective housing that reduces leakage radiation during use
Secondary radiation
scatter and leakage
Name 3 types of radiation exposure that are of concern when protective barriers are
designed
Primary radiation (useful beam), leakage and scatter radiation
GSD
genetically significant dose
ESD
entrance skin dose
, MMD
mean marrow dose
Sentinal Event
any skin dose exceeding 15 Gy and always followed by severe skin damage
mGyt-cm
the unit to measure the output intensity
SSD
source to skin distance
What tissues are the most radiosensitive?
RBM, colon, lung, stomach and breast
What is the approximate half value layer of diagnostic x-rays in soft tissue?
4 cm
Fetal Dl
the estimated amount of radiation received during radiographic examination during pregnancy
Major organogenesis
Time approximately of pregnancy from the 2nd week to the 10th week
Shadow Shield
Shield that is suspended over the region of interest; it casts a shadow over the patient's
reproductive organs.
