Discover
Questions library
Collections library
Find online teacher
login
Discover
questions library
Find online teacher
login
Popular searches:
if-else
class-diagram
flowchart
Polymorphism
Home
Questions
Questions
Study lists
Wael Hammad Questions
10601 Questions
If the half-life of technetium 99m is 6 hours. After seven half-lives what fraction of the original amount of technetium would remain?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
98
Why is increasing the distance between yourself and a source of radiation is an effective way of reducing your exposure? Because:
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
87
If the halflife of technetium 99 m is 6 hours. After five half-lives what fraction of the original amount of technetium would remain?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
84
The radionuclide technetium 99m (4399mTc) is often incorporated into radiopharmaceuticals. When it decays by gamma emission the daughter nucleus may be represented as 4399X (X is not the real chemical symbol for the daughter nucleus!). Which of the following statements is correct?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
163
What does the physical half-life of a pure sample of radioactive material refer to?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
89
What may the term radioactivity correctly used to refer to?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
81
What may the term “radioactive” be correctly used to describe?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
271
Which of the following pairs of nuclides are isotopes?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
85
Why is radiotherapy using high energy x-rays, an effective way of treating some cancer? Because
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
92
Given the statement: “Your exposure to radiation varies inversely with the square of your distance from the source of radiation”, what is the correct way to finish the sentence? “If you increased the distance between you and a patient with a radioactive implant:
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
162
Why are radioisotopes that emit low energy (100–250 keV) gamma rays preferred for the diagnostic procedures of nuclear medicine? Because:
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
2
371
Given that a radiopharmaceutical containing the radionuclide technetium 99m (4399mTc) has an activity of 4 MBq immediately prior to injection into a patient. About 12 hours later the patient is measured to have an activity of about 1 MBq. How long is the half-life of technetium 99m?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
166
Which of the following statements about radioactivity is correct?
Medicine
2022-10-21
Answers
30
Question
40
Followers
30
0
1
91
Total:
10601
Previous
752
753
754
755
756
Next
Go
