RADT 1200 CH33 EXAM QUESTIONS
AND ANSWERS
ionizing radiation effects that occur w/in days or weeks of exposure - Answer-
deterministic effects
deterministic effects are initiated by ____ doses and are not normally encountered in
modern radiology - Answer- high
SI units for radiation in air - Answer- Gray a
traditional units for radiation in air - Answer- Roentgen
SI units for occupational dose - Answer- Sievert
traditional units for occupational dose - Answer- REM
SI units for patient dose - Answer- Gray t
Traditional units for patient dose - Answer- RAD
syndrome following high doses of ionizing radiation to the entire body - Answer-
acute radiation syndrome
acute radiation syndrome is _____ - Answer- lethal
three separate (lethal) syndromes that manifest - Answer- hematologic,
gastrointestinal, central nervous system syndromes
there are two periods before illness manifests with acute radiation lethality - Answer-
prodromal, latent
the prodromal period occurs at radiation doses above - Answer- 1Gyt to whole
body
onset of prodromal period - Answer- minutes to hours
nausea, vomiting, diarrhea, decreased WBCs occurs during what period - Answer-
prodromal period
prodromal period lasts from a few hours to _ days and the severity is ____ related -
Answer- 2, dose
, the _______ period occurs after the initial radiation sickness, and is a period of
"________ ____-_____" and lasts hours or less to weeks - Answer- latent,
apparent well-being
the latent period for high doses is _______ and longer for ___ doses - Answer-
shorter, high
hematologic syndrome is initiated at - Answer- 2-10Gyt
hematologic syndrome has a prodromal period that lasts _____ to ____ and a latent
period that lasts up to _ weeks - Answer- hours to days, 4
the manifest illness stage of hematologic syndrome has the following symptoms: -
Answer- vomiting, diarrhea, malaise, lethargy, fever, decreased WBCs, RBCs,
and platelets
mean survival time for hematologic syndrome (is/isn't) dose dependent - Answer-
is
in hematologic syndrome, if the dose is low enough recovery may occur in - Answer-
2 weeks to 6 months
gastrointestinal syndrome is initiated at __ _____ level and occurs in the following
range: - Answer- 10 Grayt, 10-50 Grayt
prodromal symptoms of ______ and ________ for GI syndrome last ____ _____,
while the latent period lasts - Answer- nausea and vomiting, 1-24 hours, 3-5 days
the manifest illness symptoms for GI syndrome include those of _________
syndrome - Answer- hematologic
manifest illness symptoms for GI syndrome - Answer- nausea, vomiting, diarrhea,
loss of appetite, lethargy, lowered WBCs
in GI syndrome death occurs in ______ ____ (mean survival time), due to damage
to stem cells lining the intestines - Answer- 4-10 days,
in GI syndrome fluid passes ______ through intestinal membrane, causing -
Answer- membrane, electrolyte imbalance and infection
in GI syndrome some damage to _______ system also occurs - Answer-
hematologic
in GI syndrome the mean survival time is not - Answer- dose dependent
AND ANSWERS
ionizing radiation effects that occur w/in days or weeks of exposure - Answer-
deterministic effects
deterministic effects are initiated by ____ doses and are not normally encountered in
modern radiology - Answer- high
SI units for radiation in air - Answer- Gray a
traditional units for radiation in air - Answer- Roentgen
SI units for occupational dose - Answer- Sievert
traditional units for occupational dose - Answer- REM
SI units for patient dose - Answer- Gray t
Traditional units for patient dose - Answer- RAD
syndrome following high doses of ionizing radiation to the entire body - Answer-
acute radiation syndrome
acute radiation syndrome is _____ - Answer- lethal
three separate (lethal) syndromes that manifest - Answer- hematologic,
gastrointestinal, central nervous system syndromes
there are two periods before illness manifests with acute radiation lethality - Answer-
prodromal, latent
the prodromal period occurs at radiation doses above - Answer- 1Gyt to whole
body
onset of prodromal period - Answer- minutes to hours
nausea, vomiting, diarrhea, decreased WBCs occurs during what period - Answer-
prodromal period
prodromal period lasts from a few hours to _ days and the severity is ____ related -
Answer- 2, dose
, the _______ period occurs after the initial radiation sickness, and is a period of
"________ ____-_____" and lasts hours or less to weeks - Answer- latent,
apparent well-being
the latent period for high doses is _______ and longer for ___ doses - Answer-
shorter, high
hematologic syndrome is initiated at - Answer- 2-10Gyt
hematologic syndrome has a prodromal period that lasts _____ to ____ and a latent
period that lasts up to _ weeks - Answer- hours to days, 4
the manifest illness stage of hematologic syndrome has the following symptoms: -
Answer- vomiting, diarrhea, malaise, lethargy, fever, decreased WBCs, RBCs,
and platelets
mean survival time for hematologic syndrome (is/isn't) dose dependent - Answer-
is
in hematologic syndrome, if the dose is low enough recovery may occur in - Answer-
2 weeks to 6 months
gastrointestinal syndrome is initiated at __ _____ level and occurs in the following
range: - Answer- 10 Grayt, 10-50 Grayt
prodromal symptoms of ______ and ________ for GI syndrome last ____ _____,
while the latent period lasts - Answer- nausea and vomiting, 1-24 hours, 3-5 days
the manifest illness symptoms for GI syndrome include those of _________
syndrome - Answer- hematologic
manifest illness symptoms for GI syndrome - Answer- nausea, vomiting, diarrhea,
loss of appetite, lethargy, lowered WBCs
in GI syndrome death occurs in ______ ____ (mean survival time), due to damage
to stem cells lining the intestines - Answer- 4-10 days,
in GI syndrome fluid passes ______ through intestinal membrane, causing -
Answer- membrane, electrolyte imbalance and infection
in GI syndrome some damage to _______ system also occurs - Answer-
hematologic
in GI syndrome the mean survival time is not - Answer- dose dependent
