Medical Physicist's Notes · Vacuum Cushions

Notes for the physicist runningconformal-hold SBRT immobilisation.

Each post covers one aspect of running vacuum-cushion immobilisation across the SBRT programme — per-site build sheet (lung, abdomen, pelvis, spine), motion- management mapping, MR-linac transfer chain, and the AAPM TG-176 dosimetric- characterisation cadence.

Vacuum Cushions

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Posts in this section. New ones land here as they're added.

SBRT build sheet

Six SBRT and IMRT treatment workflows — one conformal-hold cushion family

Per-site SBRT build sheet — lung, liver, kidney, spine, pelvic, H&N (auxiliary) and MR-linac. Cushion size + bead grade + motion-management + CTV-to-PTV margin per AAPM TG-101 / TG-178.

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Where next

Two more pages, depending on what you need.

Knowledge Hub →

Vacuum-bag immobilisation in plain English

The conformal-hold partner of the indexed baseplate, and the AAPM TG-101 SBRT chain.

Product page →

Specs and variant matrix

Five sizes × bead-grade tiers × outer-fabric tiers × Accessories Matrix.