Modelling Internal Hepatic Movement With an External Abdominal Marker Block for Use With a Real Time Position Monitoring System for Respiratory Gating
The study will use a real time position management (RPM) system for respiratory gating. The
RPM system senses the respiration motion of the patient by tracking a pair of reflective
markers on a lightweight "marker block" constructed of a synthetic material. This block is
placed on the patient's abdomen.
During Radiotherapy, the beam is only switched on at pre-determined phases of respiration.
The appropriate phase of respiration is determined by the RPM system. This implies a
reliable correlation of external block motion to internal hepatic movement. This correlation
is not a simple one, and requires "modeling".
Time Perspective: Prospective
Dr Diana Tait
Royal Marsden HNHS Foundation Trust
United Kingdom: Medicines and Healthcare Products Regulatory Agency