There are two primary ways this is achieved in modern CT technology:

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While 015ctrremove is likely a specific software identifier for a algorithm, the underlying principle relies on Dual-Energy CT . It mathematically strips the iodine signal from the dataset, allowing radiologists to view the baseline tissue density without subjecting the patient to an extra radiation dose.

In a standard CT workflow, a "Non-Contrast" (NC) scan is taken before iodine dye is injected. This serves as a baseline. However, performing two scans increases radiation dose to the patient.

The string 015ctrremove looks like a specific function name, script, or parameter from a medical imaging software package (possibly related to or a similar PACS/modality workstation) designed to subtract iodine contrast from CT datasets.

: Once the troubleshooter says "Fixed," you must restart your computer to clear out temporary files and registry keys.