1. Radiology On-Call
Dr. Ian Ross
The University of Western Ontario

2. Radiology On-Call 1) Logistics 12,000 cases / yr
CT >> US > MR
Clarify request
appropriateness
assess urgency (triage)
choose correct scan protocol (78 protocols)
The University of Western Ontario

3. Radiology On-Call 2) I.V. Contrast What?  Why? Benefits / Risks
The University of Western Ontario

4. Radiology On-Call 2) I.V. Contrast What? Why?  Benefits / Risks
The University of Western Ontario

5. Radiology On-Call 2) I.V. Contrast What? Why?
Benefits / Risks  Diagnosis
The University of Western Ontario

6. Radiology On-Call 2) I.V. Contrast Risks Nephropathy – creatinine
Reactions – rare !
The University of Western Ontario

7. 2) I.V. Contrast – Reactions
Radiology On-Call
2) I.V. Contrast – Reactions
Anaphylactoid
Mild – hives
Moderate
Severe
Other
Direct toxicity – CNS, CVS (rare !)
The University of Western Ontario

8. 2) I.V. Contrast – Reactions
Radiology On-Call
2) I.V. Contrast – Reactions
Anaphylactoid
Mild – hives
Moderate
Severe
Other
Direct toxicity – CNS, CVS (rare !)
The University of Western Ontario

9. 2) I.V. Contrast – Reactions
Radiology On-Call
2) I.V. Contrast – Reactions
Anaphylactoid
Mild – hives
Moderate
Severe
Other
Direct toxicity – CNS, CVS (rare !)
The University of Western Ontario

10. 2) I.V. Contrast – Reactions
Radiology On-Call
2) I.V. Contrast – Reactions
Anaphylactoid
Mild – hives
Moderate
Severe
Other
Direct toxicity – CNS, CVS (rare !)
The University of Western Ontario

11. 2) I.V. Contrast – Reactions
Radiology On-Call
2) I.V. Contrast – Reactions
Anaphylactoid
Mild – hives
Moderate
Severe
Other
Direct toxicity – CNS, CVS (rare !)
The University of Western Ontario

12. Radiology On-Call 2) I.V. Contrast – CT Scan
Need 2 health care humans present
CT Tech + 1 of:
other Xray tech
nurse MD
The University of Western Ontario

13. Radiology On-Call 3) CT Radiation Dose Risks Low but real
Lifetime cancer risk for a CT Abd / pelvis
1 in 2000
The University of Western Ontario

14. Radiology On-Call 1. Residents busy but helpful 2. IV contrast
3. Radiation dose – thought-provoking
The University of Western Ontario

15. Radiology On-Call
The University of Western Ontario