Physics Chapter 37

20問 • 1年前

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通報

問題一覧

Patient dose from diagnostic x-rays is most often reported in ______.

entrance skin dose

Patient skin exposure can be measured indirectly by using a _______.

nomogram

If the radiographic technique for a KUB calls for 40 mAs, what is the ESD when the output intensity is 0.075 mGy/mAs?

3 mGy

Acute skin effects from radiation exposure have been reported following ______ exams.

angio/interventional

For the average fluoroscopy exam the ESE is _______.

40 mGy/min.

An estimation of patient dose is reported as ______.

ESE, bone marrow dose and gonadal dose

Bone marrow dose is measured _______.

as an estimate from ESE

The most important variable in determining x-ray dose are the ______.

receptor speed

The simplest way to measure patient dose is to measure the _________.

entrance skin dose

The radiation dose monitor most frequently used to measure patient exposure is the _______.

thermoluminescent dosimeter

If the output intensity of an x-ray machine is 0.064 mGy/mAs at 80 kVp, what is the patient’s ESE for an exam done at 20 mAs at 80 kVp?

1.28 mGy

The approximate average bone marrow dose to the population of the United States is

The genetically significant dose for the general public is important because of the risk of

effects on the gene pool

The genetically significant dose (GSD) for the population of the United States is about

0.20 mSv.

The mean marrow dose from diagnostic x-ray examinations averaged over the entire population of the United States is about

100 mrad/yr.

The radiation dose absorbed by an organ such as bone marrow

cannot be measured by a direct method; it can only be estimated.

Dose area product is expressed in which units?

mGya-cm2

Which of the following procedures has caused the most sentinel events?

Cardiac catheterization

The half-value layer (HVL) of projection x-rays in soft tissue is approximately how many centimeters?

4 cm

Mean marrow dose (MMD) is defined as

the average radiation dose to the entire active bone marrow.

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問題一覧

Patient dose from diagnostic x-rays is most often reported in ______.

entrance skin dose

Patient skin exposure can be measured indirectly by using a _______.

nomogram

If the radiographic technique for a KUB calls for 40 mAs, what is the ESD when the output intensity is 0.075 mGy/mAs?

3 mGy

Acute skin effects from radiation exposure have been reported following ______ exams.

angio/interventional

For the average fluoroscopy exam the ESE is _______.

40 mGy/min.

An estimation of patient dose is reported as ______.

ESE, bone marrow dose and gonadal dose

Bone marrow dose is measured _______.

as an estimate from ESE

The most important variable in determining x-ray dose are the ______.

receptor speed

The simplest way to measure patient dose is to measure the _________.

entrance skin dose

The radiation dose monitor most frequently used to measure patient exposure is the _______.

thermoluminescent dosimeter

If the output intensity of an x-ray machine is 0.064 mGy/mAs at 80 kVp, what is the patient’s ESE for an exam done at 20 mAs at 80 kVp?

1.28 mGy

The approximate average bone marrow dose to the population of the United States is

The genetically significant dose for the general public is important because of the risk of

effects on the gene pool

The genetically significant dose (GSD) for the population of the United States is about

0.20 mSv.

The mean marrow dose from diagnostic x-ray examinations averaged over the entire population of the United States is about

100 mrad/yr.

The radiation dose absorbed by an organ such as bone marrow

cannot be measured by a direct method; it can only be estimated.

Dose area product is expressed in which units?

mGya-cm2

Which of the following procedures has caused the most sentinel events?

Cardiac catheterization

The half-value layer (HVL) of projection x-rays in soft tissue is approximately how many centimeters?

4 cm

Mean marrow dose (MMD) is defined as

the average radiation dose to the entire active bone marrow.