Does it effect a Cat Scan test with Contrast if you don't hold your breath when the machine tells you to? I had a Cat Scan with Contrast and the machine the first time before the contrast said hold your breath then they added the Contrast but the machine never said hold your breath it just showed a picture of a person holding their breath and guess what .... I didn't hold my breathe it was to late. And I didn't tell the Tech I didn't hold my breath. It was a Cat Scan of my lungs. I had one 3 months before and it showed a small density in my right lower lobe with Hilar Adenopathy and the Cat Scan I didn't hold my breath on showed everything normal. I was just wondering since I didn't hold my breath and complete the test correctly if it would effect the results. Cause I am still getting lung pain.

Summarized question: Does it affect a CAT Scan test with Contrast if you don't hold your breath when the machine tells you to?