Radiation risk from medical imaging: Difference between revisions
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==Tests and Radiation Amounts== | ==Tests and Radiation Amounts== | ||
===FLAT FILMS (mrad)=== | |||
'''Low-dose''' | |||
FLAT FILMS (mrad) | |||
Low-dose | |||
Head <1 | Head <1 | ||
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Extrem <1 | Extrem <1 | ||
'''High-dose''' | |||
High-dose | |||
L-spine <1250 | L-spine <1250 | ||
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===CT (1cm slices)=== | |||
CT (1cm slices) | |||
Head <50 | Head <50 | ||
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Lower abd <9000 | Lower abd <9000 | ||
===ANGIO=== | |||
ANGIO | |||
Cerebral <100 | Cerebral <100 | ||
| Line 54: | Line 44: | ||
Aortography <100 | Aortography <100 | ||
===V/Q scan <215=== | |||
V/Q scan <215 | |||
(class C injectable technetium, xenon even safer) | (class C injectable technetium, xenon even safer) | ||
==Pregnancy== | ==Pregnancy== | ||
Greatest risk during organogenesis (8-12wk) | Greatest risk during organogenesis (8-12wk) | ||
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PO contrast not absorbed | PO contrast not absorbed | ||
==EXPOSURE RISK (mrads)== | |||
<5,000 = safe | <5,000 = safe | ||
~10,000 = small risk childhood CA | ~10,000 = small risk childhood CA | ||
~15,000 | ~15,000^ = 6% chance mental retard | ||
<3% chance childhood CA | <3% chance childhood CA | ||
^Considered max | |||
Always use sheild when possible | Always use sheild when possible | ||
==Source== | ==Source== | ||
3/29/06 DONALDSON (adapted from Rosen) | 3/29/06 DONALDSON (adapted from Rosen) | ||
[[Category:Rads]] | [[Category:Rads]] | ||
Revision as of 21:43, 10 June 2011
Tests and Radiation Amounts
FLAT FILMS (mrad)
Low-dose
Head <1
C-spine <1
Thracic spine <1
CXR <1
Extrem <1
High-dose
L-spine <1250
Pelvis <350
Hip <450
IVP <900
Urethrocyst <1500
KUB <500
CT (1cm slices)
Head <50
Chest <1000
Upper abd <3000
Lower abd <9000
ANGIO
Cerebral <100
Cardiac cath <500
Aortography <100
V/Q scan <215
(class C injectable technetium, xenon even safer)
Pregnancy
Greatest risk during organogenesis (8-12wk)
IV contrast not teratogenic (class B)
PO contrast not absorbed
EXPOSURE RISK (mrads)
<5,000 = safe
~10,000 = small risk childhood CA
~15,000^ = 6% chance mental retard
<3% chance childhood CA
^Considered max
Always use sheild when possible
Source
3/29/06 DONALDSON (adapted from Rosen)