Mycobacterium avium intracellulare infection
Dr. Jonathan Hack
This middle-aged woman was known to have a mycobacterium avium intracellulare infection and presented with haemoptysis. She underwent bronchial arterial embolisation, but continued to cough up blood. A CTA was performed in order to assess for possible pulmonary arterial supply to the lesion.
- Type: Ultravist 370
- 4 ml per second via an antecubital vein injection rate
- 60 ml total volume
- Bolus tracking: pulmonary outflow, 50 HU above baseline
SPR image showing the lesion and its bronchial communication
VIP image showing pulmonary arterial supply and venous
Another VIP image showing pulmonary arterial supply and venous drainage
VR image showing the vascular status
- 250 mAs/slice (DoseRight on)
- 120 kVp
- 0.676 pitch
- 280 mm FOV
- 40 X 0.625 mm collimation
- 0.9 mm X 0.45 mm reconstruction
- Filter: B
- 9 second scan time
A cavitating lesion in the right lower lobe was detected. Blood supply via a pulmonary arterial branch was confirmed and two draining veins were detected. The bronchial communication was also well demonstrated.
The CT was able to accurately and quickly show the relevant anatomy as described. The patient was then transferred to the interventional suite for appropriate emblolisation.