Skip to main content

Table 1 Duration of treatment steps and probability of events for clinically applied MR-HIFU breast cancer treatments as predicted by experts compared to data from the MR-HIFU feasibility study

From: Early health technology assessment of magnetic resonance-guided high intensity focused ultrasound ablation for the treatment of early-stage breast cancer

Treatment phase Parameter Experts Faesibility study [28]
Unit Median Min Max Median
Positioning Time patient verification min 15 10 25 11.5
Time verification reachability min 15 7 20 14.5
Time target definition min 8 5 15 n/a
Chance of repositioning - 0.30 0.10 0.75 n/a
Test Time to place navigator min 2 1 10 1
Time MRI scan min 2.5 1 15 2.5
Time for treatment planning min 2 1 5 n/a
Time to fill LUT min 2.75 0 5 n/a
Test sonication and check focal point min 3 1 5 4
Chance of adjustment focal point per coronal plane - 0.55 0.20 0.90 n/a
Therapeutic Time therapeutic phase min 0.50 0.25 0.75 n/a
Cooling time after each sonication min 3.5 1 10 n/a
Chance of abortion per coronal plane - 0,10 0,05 0,20 n/a
Chance of resonication per coronal plane - 0.20 0.10 0.30 n/a
Post-treatment Time clinical ward min 240 120 300 n/a
Chance of complications - 0.015 0.01 0.03 n/a
  1. n/a not available