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MDCB EXAM QUESTIONS AND ANSWERS. A+ GRADED GUIDE.

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MDCB EXAM QUESTIONS AND ANSWERS. A+ GRADED GUIDE. What is a half-life? Time it takes for a particular quantity (activity) to reduce to 50% What is the decay constant (lambda) formula? lambda = ln(2) / half-life What is the mean life formula? mean life = 1.44 (half-life) What is the formula for radioactive decay? A=A0 e^(-λt) Half-life of Pd-103? 17 days Half-life of I-125? 59.4 days Half-life of Ir-192? 73.8 days Half-life of Cs-137? 30.2 years Half-life of Co-60? 5.26 years Half-life of Ra-223? 11.4 days What factor determines how much/how long a nuclide stays in the body? Energy What low energy nuclides stay in the patient forever? Pd-103 and I-125 What higher energy nuclide stays in the patient for several minutes at most? Ir-192 What higher energy nuclides will be circulated out of the patient's body?

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MDCB EXAM QUESTIONS AND ANSWERS. A+ GRADED
GUIDE.
What is a half-life?

Time it takes for a particular quantity (activity) to reduce to 50%

What is the decay constant (lambda) formula?

lambda = ln(2) / half-life

What is the mean life formula?

mean life = 1.44 (half-life)

What is the formula for radioactive decay?

A=A0 e^(-λt)

Half-life of Pd-103?

17 days

Half-life of I-125?

59.4 days

Half-life of Ir-192?

73.8 days

Half-life of Cs-137?

30.2 years

Half-life of Co-60?

5.26 years

Half-life of Ra-223?

11.4 days

What factor determines how much/how long a nuclide stays in the body?

Energy

What low energy nuclides stay in the patient forever?

Pd-103 and I-125

What higher energy nuclide stays in the patient for several minutes at most?

Ir-192

What higher energy nuclides will be circulated out of the patient's body?

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MDCB EXAM QUESTIONS AND ANSWERS. A+ GRADED GUIDE.

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