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Table 1 Doses in cardiology

From: The American College of Radiology white paper on radiation dose in medicine:deep impact on the practice of cardiovascular imaging

Examination

Effective dose (mSv)

Equivalent n. of chest x-rays

CONVENTIONAL RADIOLOGY

  

   ♣ Chest x ray (single postero-anterior)

0.02

1

NUCLEAR MEDICINE

  

   ♣ Tc-99 m tetrafosmin cardiac rest-stress (10 mCi+30 mCi)*

10.6

530

   ♣ Tc-99 m sestamibi cardiac 1-day rest-stress (10 mCi+30 mCi)*

12

600

   ♣ Tc-99 m sestamibi cardiac 2-day stress-rest (30 mCi+30 mCi)*

17.5

775

   ♣ Tl-201 cardiac stress and reinjection (3.0 mCi+1.0 mCi)*

25

1500

   ♣ Dual isotope cardiac (3.0 mCi Tl201 + 30 mCi Tc-99 m)*

27

1600

64-Slice CARDIAC COMPUTED TOMOGRAPHY

  

   ♣ ECG pulsing, no aorta**

9

450

   ♣ No ECG pulsing, yes aorta**

29

1450

INTERVENTIONAL RADIOLOGY

  

   ♣ Conventional rhythm device***

1.4

70

   ♣ Cardiac resynchronization device***

5.5

275

   ♣ Cerebral angiography ***

1.6–10.6

80–530

   ♣ Coronary angiography ***

3.1–10.6

155–555

   ♣ Abdomen angiography ***

6–23

300–1150

   ♣ Peripheral angiography***

2.7–14

135–700

   ♣ Coronary angioplasty ***

6.8–28.9

340–1445

   ♣ Peripheral angioplasty***

10–12

500–600

   ♣ Radiofrequency ablation***

17–25

850–1250

   ♣ Valvuloplasty***

29

1450

  1. From ref. 8, 9*, 10**,11 ***. CT protocols that rescan the same region of interest (e.g., non-contrast and contrast-enhanced scans) impart two to three times the radiation dose.