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RapidArc — Volumetric Arc Therapy.

The treatment machine rotates continuously around the patient, shaping the dose as it goes — fast, conformal treatment, often delivered in a couple of minutes.

RapidArc is a form of volumetric-modulated arc therapy: the machine sweeps around you in one or more arcs, modulating the beam continuously to wrap the dose around the target.

What it is

Rather than treating from a set of fixed beam directions, RapidArc delivers IMRT-quality conformal dose as the gantry rotates — shaping intensity, aperture and rotation speed simultaneously. The result is comparable or better conformity, delivered much faster.

Why it helps

  • Highly conformal dose distributions
  • Markedly shorter treatment times — often a couple of minutes
  • Less time on the couch means greater comfort and stability

What to expect

From the patient's side, a RapidArc session is brief and painless. It is used across many sites and, like all conformal techniques, paired with image guidance.

Questions patients ask

What is RapidArc?

A form of volumetric arc therapy in which the machine rotates continuously around you, shaping the dose as it turns.

How is it different from IMRT?

It achieves comparable conformality but delivers treatment faster, often in a couple of minutes, which also means less chance of movement during the session.

Is a shorter treatment less effective?

No. The prescribed dose is the same; it is simply delivered more efficiently.

Which patients is it suited to?

Most sites treated with IMRT can be treated with arc therapy, and it is particularly helpful for patients who find lying still difficult.

General information, not a substitute for a consultation. Your plan depends on your reports, stage and general health — discuss your case with Dr. Bhatnagar.

Discuss your case with Dr. Bhatnagar.

Bring your reports and scans for a consultation — he will tell you plainly whether radiation has a role.

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