1. Radiation Protection Procedures
Chapters Bushong
Chapter 1 Sherer

2. Think of two reasons why society is interested in exposure rates to patients

3. Units of measurement Exposure -Radiation intensity of air
What is the unit of measurement?
Dose-radiation energy absorbed from radiation exposure
Effective dose-biological effectiveness of the radiation energy absorbed

4. ESE, GONADAL DOSE,MEAN MARROW DOSE
ESE Table 39-1 in Bushong or TABLE 1-5 in Sherer.
ESE and nomograms
Mean marrow dose…see table 39-2(Bushong) and table 1-7 in Sherer…how are they different?

5. Genetically Significant Dose
Estimating gonad dose = suspected genetic effects of radiation
Averages those patients who are irradiated and those who are not
Calculates the total genetic effect over a large population

6. DOSE IN CT IMAGING SKIN DOSE-HIGHER
SPIRAL/MULTISLICE IMAGING –lower than conventional CT Why?
10% OF X-RAYS ARE CT SCANS YET CT SCAN ATTRIBUTE FOR 70% OF TOTAL PATIENT EFFECTIVE DOSE
CT dose= AVE FLUORO DOSE
REDUCTION OF UNNECESSART PATIENT DOSE- PGS

7. What is the recommended dose limit for radiologic personnel?
50 mSv/yr
5000mrem/yr
5rem/yr
All of the above

8. The occupational dose should not normallY exceed 1 mSv/yr (100mrem/yr)
See chart 40-1
Fluoro/portables (Exposure =exposure rate x time)
Which is better for the operator in terms of exposure in a fluoroscopy study
Tube over patient?
Tube under patient?

9. Personnel Exposure in Interventional Mammography CT Surgery Mobile
What part of the body receives the highest dose?
Mammography
Requires minimal or no lead shielding. Why? CT
Describe the beam in the CT room
Surgery
Interesting results from study
Mobile
Who must be “badged’?

10. REDUCING OCCUPATIONAL EXPOSURE
95% of occupational exposure comes from?
In fluoro, an RT should
A portable the cord should be
The three types of personnel monitors are?
Describe how the radiation is calculated.
MC RT students wear?

11. SHERER CHAPTER 1 RADIATION PROTECTION
Diagnostic Efficacy
TDS
ALARA
ORP
BERT Values
Equivalent dose Eqd
Effective dose EfD

12. Sherer Chpt 1 Manmade Radiation
Products EqD
Air Travel EqD
Nuclear fuel EqD
Fallout from Nuclear testing EqD
Nuclear Accidents
Three mile island
Chernobyl

13. The Ethos project
Medical Radiation

14. REVIEW QUESTIONS IN SHERER-PAGE 23-24