MHU

Mega Heat Units — the thermal capacity of an X-ray tube's anode. 1 HU = 1 watt-second × 1.35 (for 3-phase generators).

Why it matters to buyers: Higher MHU supports longer / heavier protocols without cooling delays. Performix Pro VCT 100 = 8.0 MHU; interventional tubes are similar or higher.

Why it matters to engineers: A tube's MHU rating caps sustained duty cycle. Exceeding it triggers cooling delays; chronically pushing the limit shortens tube life.