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Measurement deviations of lung nodule
Lung Cancer | Last Active: Apr 18 3:11pm | Replies (6)Comment receiving replies
From what I've observed with mine 2mm is not considered substantial enough but I don't know the margin that is. Measurements can vary depending on the exact image number they use, if it was done on a different machine, if it was read by a different radiologist, or how far the lung was expanded when the patient held their breath. The study I'm sharing here is old but it highlights how subjective interpretations can be.
https://cancergrace.org/post/did-my-cancer-grow-10-minutes-limitations-ct-scanning
Replies to "From what I've observed with mine 2mm is not considered substantial enough but I don't know..."
I’m going to guess you meant 2cm not 2mm.. the latter would be very very small
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I think your point is valid that imaging something that small and different scanners and different radiologists could produce small variances . The article is informative.
As you mentioned the article is old and am wondering how old the CT was when they did this test. Since the first CTs were developed, the medical equipment manufacturers have continually improved their CTs to maximize image quality while minimizing radiation dose. CTs were replaced quite often just because of vast improvement in scanning capabilities. Point being, I would like to see the test repeated today. Also, the scanner settings can vary widely based on physician need. body part, patient age, etc. There is a lot of on-line information and can get quite technical. This is a short YouTube basic explanation of images. Hope this helps