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Cameras track the patient's skin surface in three dimensions during treatment, replacing tattoos and pausing the beam if the patient moves.
Optical surface tracking systems project structured light onto the patient and compare the reconstructed surface with the planned one many times a second. They set up the patient without permanent skin tattoos, monitor motion throughout the beam and gate delivery during breath-hold. Surface guidance is now routine in breast radiotherapy, where deep-inspiration breath-hold moves the heart out of the field, and in radiosurgery with open face masks.
Real-time comparison of the patient's 3D surface with a reference surface drives setup corrections and beam gating.
Surface guidance allowed the face mask to be opened without losing set-up accuracy, and patients tolerated the open masks better. It is a gain in patient experience made possible by precision, rather than a gain in cancer control.
Breath-hold for left breast radiotherapy can be delivered without special breathing equipment across ordinary NHS departments, and lowers heart dose in almost everyone selected for it.
Query for this technology: (TITLE:"Surface-guided radiotherapy" OR ABSTRACT:"Surface-guided radiotherapy" OR TITLE:"SGRT" OR ABSTRACT:"SGRT") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about Surface-guided radiotherapy (SGRT), not a curated reading list.
Shares C-RAD, Vision RT, The UK HeartSpare Study (Stage II): multicentre evaluation of a voluntary breath-hold technique in patients receiving breast radiotherapy, Let the patient see their own breath-hold on a screen or in video glasses and the tags radiation-wave1, precision.
Shares IMRT / IGRT (modern external beam) and the tags radiation-wave1, precision.
Shares IMRT / IGRT (modern external beam) and the tags radiation-wave1, precision.
Shares Patient positioning and surface guidance systems (AlignRT, Catalyst, ExacTrac Dynamic), IMRT / IGRT (modern external beam) and the tags radiation-wave1, precision.
Shares IMRT / IGRT (modern external beam) and the tags radiation-wave1, precision.
Shares IMRT / IGRT (modern external beam) and the tags radiation-wave1, precision.
Shares the tags radiation-wave1, precision.
Shares C-RAD, Vision RT, Let the patient see their own breath-hold on a screen or in video glasses, Deep-breath-hold radiotherapy for every suitable person with left-sided breast cancer and the tag precision.
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