On Call Welcome once again to On Call, The Register 's Friday column in which we share your tech support stories.

This week, meet a reader we'll Regomize as "Warren," a network engineer who found himself working on a project team that was trying to clean up a big stack of open tickets that had accumulated during the merger of two hospitals.

Some of the tickets were easy to fix – users would tire of waiting and just buy a new mouse to replace malfunctioning machines – but the one that landed on Warren's desk was more challenging, technically and politically.

"They 'airdropped' me into the middle of an ongoing discussion between the hospital and a vendor regarding the sub-par performance of a 3D scanner used to detect breast cancer," he told On Call.

"When doctors viewed scans, they woul

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