RadBudd | Radiotherapy

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Case 23

Image matching simulation

Patient: Saanvi Chopra
Age: 63
Treatment Intent: Radical.
Prescription: 45Gy in 25#s to perirectal, pre-sacral, and internal iliac nodes, with a sequential boost to 50.4Gy to the primary and mesorectum.
Technique: VMAT
Site: Rectum
Diagnosis: cT2N1M0 Rectal Adenocarcinoma
Current Fraction: 11/25
Notes: Saanvi is also having concurrent oral capecitabine. Patient has informed you that she has avoided eating during the weekend due to increased nausea & diarrhea. No relevant information recorded in the imaging sheet.

Site-specific training protocol

Acceptable Auto Match displacement: Lng, Lat and Vrt must each be within ±2 cm.
Acceptable Auto Match rotation: Pitch, Roll and Yaw must each be within ±2°.
Maximum manual move after Auto Match: ±1 cm per translation axis.
Correction (degrees of freedom): Vrt, Lat, Lng, Pitch, Roll, Yaw.
Workflow: Run Auto Match first. If its values are within this protocol, fine-tune only with the listed correction axes and remain within the maximum manual move. Treat only when the final match and the treatment-site checks pass; otherwise, do not treat.
Disclaimer ⚠️: These values are for this RadBudd training case only. Clinical departments must follow their own equipment, technique and institutional policies.

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