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Questions and Answers
What is the purpose of the 'mask' image acquired before contrast injection in digital subtraction angiography?
What is the purpose of the 'mask' image acquired before contrast injection in digital subtraction angiography?
- To visualize the thoracic and bronchial structures
- To provide a baseline for post-contrast comparison
- To enhance the visibility of vascular structures
- To serve as a reference from removed background structure (correct)
Which imaging modality allows digital subtraction angiography to selectively visualize vascular structures by the difference between pre-contrast and post-contrast images?
Which imaging modality allows digital subtraction angiography to selectively visualize vascular structures by the difference between pre-contrast and post-contrast images?
- Temporal subtraction (correct)
- Quantum subtraction
- Spectral subtraction
- Spatial subtraction
What is the most common percutaneous palliative procedure for unresectable malignant disease?
What is the most common percutaneous palliative procedure for unresectable malignant disease?
- BILIARY DRAINAGE (correct)
- Pleural effusion drainage
- Nephrostomy tube placement
- Gastrostomy tube placement
What interventional radiologic procedure uses a multi-modality approach?
What interventional radiologic procedure uses a multi-modality approach?
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What procedure involves putting a material into the inferior vena cava to trap and break up blood clots?
What procedure involves putting a material into the inferior vena cava to trap and break up blood clots?
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