Modules / Therapists' Daily QA

Therapists' Daily QA

Morning therapist warmup / start-of-day checklist per TG-142 Table I and TG-198 implementation guidance.

Record each test result below. For measured tests, enter the deviation from the expected value — a result passes when its absolute deviation is within the tolerance shown. Tolerances are pre-filled with the selected machine class default and may be edited per test.

Daily QA — header

Machine / linac name

QA date

Performed by

Machine class — sets default tolerances

Energies / notes (optional)

Dosimetry

Test	Tolerance	Result
X-ray output constancy (all photon energies) — TG-142 Table I	± %	%
Electron output constancy (energies used same day) — TG-142 Table I	± %	%
Output constancy vs dose rate (treatment range) — TG-198 implementation	± %	%

Beam profile

Test	Tolerance	Result
Photon beam flatness constancy — TG-198 implementation	± %	%
Photon beam symmetry constancy — TG-198 implementation	± %	%
Electron beam flatness constancy — TG-198 implementation	± %	%
Electron beam symmetry constancy — TG-198 implementation	± %	%
Photon energy constancy (PDD / TMR ratio) — TG-198 implementation	± %	%

Mechanical

Test	Tolerance	Result
Localizing / room lasers vs isocenter (<=2 mm IMRT, <=1 mm SRS/SBRT) — TG-142 Table I; TG-198 implementation	± mm	mm
Distance indicator (ODI) at isocenter — TG-142 Table I	± mm	mm
Collimator / jaw size indicator (one field size) — TG-142 Table I	± mm	mm

Safety

Test	Tolerance	Result
Door interlock (functional) — TG-142 Table I	Pass / Action / Fail
Door closing safety (functional) — MPPG 8.b; TG-198	Pass / Action / Fail
Audiovisual monitor / patient intercom (functional) — TG-142 Table I	Pass / Action / Fail
Beam-on indicator lights (treatment room and console) — TG-142 Table I; MPPG 8.b	Pass / Action / Fail
Radiation area monitor (if installed) — TG-142 Table I	Pass / Action / Fail
Stereotactic interlocks (SRS/SBRT days only) — TG-142 Table I; MPPG 9.b	Pass / Action / Fail
Emergency-off button spot-check (one location, rotate locations weekly) — TG-198 implementation	Pass / Action / Fail

Imaging

Test	Tolerance	Result
Imaging-arm collision interlocks (kV, MV, CBCT) — TG-142 Table VI; TG-198	Pass / Action / Fail
Imaging-arm positioning / repositioning to stow — TG-142 Table VI	Pass / Action / Fail
Imaging vs treatment isocenter coincidence (<=2 mm non-SRS, <=1 mm SRS/SBRT) — TG-142 Table VI; MPPG 2.b	± mm	mm
Surface-guidance (SGRT) system functional / drift check (if installed) — MPPG 2.b; TG-198	Pass / Action / Fail

Cancel

Clinical disclaimer. The default tolerances shown are TG-142, TG-198, TG-179, MPPG 2.b, MPPG 8.b and MPPG 9.b starting points only. They must be reviewed, set, and approved by a Qualified Medical Physicist for your institution before clinical use. Radiant QuikQA is a QA aid, not a vendor-validated QA product. All results must be independently verified.