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The left lobe of lung is ______ because of the heart.
longer and skinnier
the right lobe of the lung is ____and ____ because of the liver
shorter and fatter
the right lung has ____lobes, and the right lung has _____lobes.
- right: 3 lobes
- left: 2 lobes
"I only have TWO lobes LEFT"
The upper lobes can tolerate more radiation because:
The lower lobes carry out most of the respiration
The relevance of the different lobes and sections of the lung for RT is:
- the prox bronchial tree for SBRT
- Future lymph tracking
- future tolerance predictions
The proximal bronchial tree + 2 cm defines the central lung region. It begins __ cm superior to the carina, and it extends to where the ____ enters each lobe the lung.
The proximal bronchial tree + 2 cm defines the central lung region. It begins 2
cm superior to the carina, and it extends to where the bronchus
enters the each lobe of lung.
*May also be called the main bronchus
When and why is prox bronchial tree used
- For Lung SBRT patients:
- Pts with centrally located lung tumors treated with SBRT suffered excessive toxicity
Histology and cell types:
- Small Cell:(18-20%)
- Oat Cell
- Mixed oat and large cell
- Non-Small Cell
- Adeno(most common) 40-50%
- Squamous (2nd most common)
Staging Small Cell
- TNM most widely used
- Limited(fits into a reasonable RT field)
- Extensive (doesn't fit into a reasonable RT field)
Staging Non-Small Cell
- T1 <3 cm
- T2 >3<7 cm
- T3 >7 cm, carina not involved
- T4 with great invasion (surgery not possible)
Recommended and Required imaging
- Required imaging:
- CT of the chest and upper abdomen
- Recommended Imaging:
- PET for TNM staging
3D Sim-patient position
supine, arms above head, vacloc recommended
based on anatomic landmarks
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