What energy is delivered to the tumour per second

Reference no: EM13997048

A ⁶⁰Co source with activity 10.00 MBq is embedded in a tumour (mass 0.500kg). The source emits n photons with average energy 1.25MeV. Only half the photons are absorbed in the tumour, the remainder escape.

a. What energy (in J) is delivered to the tumour per second?

b. Calculate the dose absorbed by the tumour delivered per second (in Gy/s)?

c. What exposure time is required for an effective dose of 2 Sv? The half-life of ⁶⁰Co is 5.27y. Do you need to take into account the fact that the activity decreases as a function of time to calculate this exposure time?

d. If an alpha emitter with the same activity and energy as the ⁶⁰Co source were used, what exposure time would you need to achieve the 2 Sv?

Reference no: EM13997048

Questions Cloud

What is the force of friction on the book : A 6.1 kg physics book is sitting on the table with no external forces acting upon it other than gravity and the table. What is the force of friction on the book?

What is the role of comments in an html document : 1. SHORT ANSWER QUESTION -- What is the role of comments in an HTML document? Describe the correct syntax to use to add a comment to an HTML document.2. SHORT ANSWER QUESTION -- What are the steps you can take when creating mailto links to reduce pro..

How do you define statistics in business : How do you define "statistics" in business ? what are different types and levels of statistics ? what role does statistics play in business decision making? what are 3 examples which statistics are used ?

Limitations of the financial accounting : limitations of the management accounting.

What energy is delivered to the tumour per second : What energy (in J) is delivered to the tumour per second? Calculate the dose absorbed by the tumour delivered per second (in Gy/s)?

Why do you believe theory important in criminal justic field : As a student of the College of Criminal Justice here l, why do you believe theory is important in the criminal justice field? Give some examples of your rationale

Xslt elements that provide conditional processing : What are the two XSLT elements that provide conditional processing ? Describe how the functionality provided by these two elements differs.

Discusses security configuration on network devices : Write a 3-4 page summary that discusses security configuration on network devices. Explains Authentication, Authorization and Access Control. Defines secure network administration policies and how they can be applied to your future IT career.

How can the auditor resolve these risks : how much information should go into the documentation. Based on your understanding of the issues in this section, do you think the auditor should include more material than necessary just to protect him/herself? What are the pros and cons of such ..

User Account

All Pages