1. Radiation Protection Procedures
Chapters Bushong
Chapter 1 Sherer

2. 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

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

4. 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?

5. 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’?

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

7. ESE, GONADAL DOSE,MEAN MARROW DOSE
ESE in Bushong or TABLE 1-5 (pg 20) in Sherer.
ESE and nomograms
Mean marrow dose…see table 39-2(Bushong) and table 1-7 in Sherer…how are they different?

8. 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

9. 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

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 Chpt 1 Diagnostic Efficacy BERT Values Equivalent dose Eqd
Effective dose EfD

12. REVIEW QUESTIONS IN SHERER-PAGE 23-24