What People Usually Mean by "MKG Heart"

If you searched “MKG heart,” you are almost certainly looking for MCG, magnetocardiography. “MKG” shows up online as a variant spelling, but the intent is typically the same: understanding magnetocardiography as a heart scanning modality and how it compares to ECG/EKG.

For a product-level view of how this is approached at SandboxAQ, the relevant internal link is AQMed.

MKG vs MCG: is there a difference?

In most technical and clinical contexts:

• MCG is the standard abbreviation for magnetocardiography.
• MKG is commonly used as an alternate shorthand or misspelling in search queries.

So when people say “MKG heart,” they usually mean “MCG heart.”

What magnetocardiography measures

Magnetocardiography measures the tiny magnetic fields generated by the heart’s electrical activity. The signal is faint, so the hard part is not defining the modality. The hard part is capturing the signal consistently and processing it into outputs that can be interpreted with confidence.

How MCG compares to ECG/EKG

A clean comparison:

• ECG/EKG measures electrical potentials at the skin.
• MCG measures magnetic fields associated with that electrical activity.

They are related, but they’re not the same signal type. That difference affects sensing, noise handling, and how results are processed.

What to focus on if you're evaluating the technology

Instead of worrying about MKG vs MCG terminology, focus on what matters operationally:

• repeatable capture in real workflows
• handling of noise and artifacts
• outputs that are clinician-friendly
• confidence and quality indicators that prevent overinterpretation

If you want the SandboxAQ pathway for this topic, start here: AQMed. For broader context, visit SandboxAQ.