Modules / Multi-Met Winston-Lutz

Multi-Met Winston-Lutz

Multiple-BB SRS WL: expected lattice from plan/CT, REG 6DoF correction, per-met 3D deviation + full yaw/pitch/roll residual (which vendor tools omit).

Multi-metastasis (multiple-BB) SRS Winston-Lutz. Only the MV (EPID) images are required — for each target on each gantry/collimator/couch image, QuikQA compares the radiation-field center (from the 50% field edges) to the BB's geometric center. The plan does not define the result; it "assumes perfect alignment." The optional planning CT + RTPLAN only refine the target layout used for matching (otherwise the built-in SNC MultiMet geometry is used). Tick Use alignment CBCT / registration only if you want to apply a CBCT-driven 6 DoF setup correction — with BrainLab/ExacTrac alignment there is no DICOM REG, so leave it off. QuikQA also reports the full yaw/pitch/roll residual vendor tools omit.

MV (EPID) images — required

Multi-met MV images — select all target fields, or one ZIP

Expected lattice — optional

RTPLAN (.rp / .dcm) — provides the plan isocenter

Planning CT — CT slices or a ZIP; BBs are segmented

Setup correction — optional

Use alignment CBCT / registration — apply a CBCT 6 DoF setup correction (leave OFF for BrainLab/ExacTrac or any as-acquired WL)

Registration (REG) object — only used if the box above is ticked

Alignment CBCT — for record only

Invert registration transform (if signs look reversed)

Machine & tolerance

Machine profile

Machine scale — coordinate convention of the acquiring linac

BB diameter (mm) — blank = preset (5 mm)

Action / tolerance (mm) — blank = tolerance sphere (action = 75% of it)

Tolerance sphere radius (mm) — drawn around each planned BB in the 3D view

Options

Low-density BB (kV / CBCT phantom)

Report notes (optional)

Cancel

Tolerances default to the configured machine profile (TG-142). Review with your Qualified Medical Physicist. Files are processed locally.