Technology & treatment

Radiofrequency ablation / RFA

Principle & mechanism

RFA uses radiofrequency energy through an electrode to heat target tissue. It differs from radiotherapy, which uses ionising radiation.

What informs suitability

Lesion size and position, nearby vessels, access, and organ safety determine planning. Some locations or shapes limit local treatment.

Typical pathway

Imaging guides electrode placement and planned energy delivery, followed by monitoring. Later imaging assesses the ablation area and further needs.

Risks & evidence limits

Risks include pain, bleeding, infection, and thermal injury near the target. Local ablation does not automatically treat spread elsewhere.

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Original BKC explainers

24 seconds · silent text video

Radiation, ablation, surgery: what differs?

Read the video transcript

Radiation targets a planned area. CyberKnife uses X-rays. It is not surgery with a blade.
Ablation acts on a local target. RFA uses heat from radiofrequency energy. Risks and target location need assessment.
Surgery describes a procedure. Procedure, access approach, and recovery are three different questions.
Start with the care goal. Discuss options and combinations with a doctor, based on diagnosis and patient condition.

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Reading sources

Fosun Health — reference topic ↗

Prepared by BKC editorial, 22 October 2026. General education, not a diagnosis or personal treatment selection. A topic listing does not establish availability at a particular hospital.

Connect the concepts

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Technology & treatment

SEE THEM SIDE BY SIDE

Different names. Understand how they work.

Compare principles, assessment, and evidence limits. A reading tool, not a way to select your treatment.

Concept diagram: Radiofrequency ablation / RFA — Radiofrequency ablation / RFA

Concept diagram: Microwave ablation / MWA — Microwave ablation / MWA

Read principles, assessment, and risks

Concept comparison, without rankings or recommendations.
Aspect	Radiofrequency ablation / RFA	Microwave ablation / MWA
How it works	RFA uses radiofrequency energy through an electrode to heat target tissue. It differs from radiotherapy, which uses ionising radiation.	MWA uses an antenna delivering microwave energy to heat target tissue. RFA and MWA are thermal ablation methods with different energy sources.
What is assessed	Lesion size and position, nearby vessels, access, and organ safety determine planning. Some locations or shapes limit local treatment.	Assessment considers lesion number, size, location, vessels or ducts, and organ function. A newer name does not determine technique choice.
Risks & limits	Risks include pain, bleeding, infection, and thermal injury near the target. Local ablation does not automatically treat spread elsewhere.	Thermal injury, bleeding, infection, and incomplete ablation can occur. Nearby bowel or sensitive structures may alter the plan or technique.

Radiofrequency ablation / RFA Microwave ablation / MWA

Schematics are conceptual. Technologies with different purposes are not necessarily alternatives. Open each topic for its sources and context.

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Doctors assess options from the case, beyond a technology name alone.

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