**This tutorial provides 1 CEU and is ideal for:**

. All 71.0 CEUs have been approved by CAMPEP for Medical Physics Continuing Education Credits.__Radiation Physicists__. The VOICE program of the Society of Nuclear Medicine and Molecular Imaging (SNMMI) has reviewed this program and approved it for a maximum of 71 continuing education hours. Because these tutorials have been approved by the VOICE Program, they are accepted for CE credit in all 50 states and by ARRT and NMTCB, even if you are not a VOICE/SNMMI member.__Nuclear Medicine and Radiology Technologists__. All 71.0 CME Credits have been approved by the IAC and are listed on the resources page of their website.__Physicians requiring CME Credits to maintain IAC Accreditation__

Proceed to the Tutorial: Inverse Square Law Tutorial

Proceed to the Quiz: Inverse Square Law Quiz

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**INVERSE SQUARE LAW: 1 CEU **This tutorial gives an overview on Interaction of Ionizing Radiation With Matter

**Objectives: Inverse Square Law**

**Topics to be Covered:**

- Definition of the inverse square law and the mathematical relationship between intensity and distance
- Examples of point sources
- Relevance of the inverse square law with respect to radiation safety
- Mathematical applications of the inverse square law and practice problems
- The Gamma Ray Dose Constant G and its dependence upon inverse square law

**Objectives**

After completion of this tutorial, one should be able to

- Define Inverse Square Law and state the mathematical relationship between intensity and distance
- Give 2 examples of point sources
- Explain the importance of the ISL with respect to Radiation Protection
- Solve mathematical problems based on the ISL
- Explain how the Gamma Ray Dose Constant G is related to the ISL

**RECEIVING YOUR CE CREDIT:**

If you have taken one of the tutorials, received a score of 80% or above, and wish to receive CE credit: Make sure you submit all of the requested information when taking the test. It’s not necessary to send us the score sheets since we receive them electronically when you submit your answers for scoring.

Within 24 hours of receipt of your submitted score sheets and payment for the tutorial(s), we will do all of the following:

1. Send a certificate to you via e-mail

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3. All members of the SNMMI will have to self-report their CE Credits on the SNMMI Website (www.snmmi.org). We will automatically send detailed self-reporting instructions to you along with your CE Credit Certificate.

If you have any problems with the self-reporting system, please contact the VOICE Coordinator directly at 703 708-9000. ).

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**TECHNOLOGISTS WISHING TO RECEIVE CE CREDIT:**

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If the score is still <80%, please contact Dr. Karesh, Tutorials Coordinator, by e-mail at nucmedconsultants@comcast.net for further instructions.