Lung radiodensity along the needle passage is a quantitative predictor of pneumothorax after CT-guided percutaneous core needle biopsy

The lowest value of lung radiodensity along the needle passage was a quantitative predictor of pneumothorax. A value of -850 HU or less was an independent risk factor for pneumothorax. As the value decreased, there was a higher risk of occurrence of more severe pneumothorax.