The following charts are comparisons of effective radiation dose with background radiation exposure for several radiological procedures according to www.radiologyinfo.org

Abdominal Region
Procedure

CT Abdomen and Pelvis

CT Body

CT Colonography

Intravenous Pyelogram (IVP)

Radiography (X-ray) Extremity

Radiography (X-ray) Lower GI Tract

Radiography (X-ray) Upper GI Tract

Radiography (X-ray) Spine

Approximate Effective Radiation Dose

10 mSv

2-10 mSv

10 mSv

3 mSv

0.001 mSv

8 mSv

6 mSv

1.5 mSv

Comparable to Natural Background Radiation

3 years

8 months to 3 years

3 years

1 year

Less than 1 day

3 years

2 years

6 months

 

Central Nervous System
Procedure

CT Head

CT Spine

Myelography

Approximate Effective Radiation Dose

2 mSv

6 mSv

4 mSv

Comparable to Natural Background Radiation

8 months

2 years

16 months

 

Chest
Procedure

CT Chest

CT Chest Low Dose

Radiography Chest

Children’s Imaging – Voiding Cystourethrogram

Approximate Effective Radiation Dose

7 mSv

1.5 mSv

0.1 mSv

Infant: 0.8 mSv, Child 5-10 yo: 1.6 mSv

Comparable to Natural Background Radiation

2 years

6 months

10 days

3 months, 6 months

 

Face and Neck
Procedure

CT Sinuses

Approximate Effective Radiation Dose

0.6 mSv

Comparable to Natural Background Radiation

2 months

 

Heart
Procedure

Cardiac CT for Calcium Scoring

Approximate Effective Radiation Dose

2 mSv

Comparable to Natural Background Radiation

8 months

 

Men’s Imaging
Procedure

Bone Densitometry (DEXA)

Approximate Effective Radiation Dose

0.001 mSv

Comparable to Natural Background Radiation

Less than 1 day

 

Women’s Imaging
Procedure

Bone Densitometry (DEXA)

Galactography

Hysterosalpingography

Mammography

Approximate Effective Radiation Dose

0.001 mSv

0.7 mSv

1 mSv

0.7 mSv

Comparable to Natural Background Radiation

Less than 1 day

3 months

4 months

3 months