Exploiting probabilistic uncertainty measures for respiratory motion prediction

Robert Dürichen, Tobias Wissel, Achim Schweikard

Abstract

To precisely ablate moving tumours in robotic radiotherapy, time latencies have to be
compensated. In the past, several non-probabilistic regression techniques have been
investigated. Recently, relevance vector machines (RVM), a probabilistic regression technique,
have been successfully evaluated on one of the most comprehensive data sets and outperformed
six other prediction algorithms like support vector regression and wavelet based least mean
square (wLMS) [1]. The method has the distinct advantage that each predicted point is assumed
to be drawn from a normal distribution. So far only the mean of the distribution was used. We
want to investigate how the predicted variance can be used as safety feature and to construct
hybrid prediction algorithms.
Original languageEnglish
Pages59
Number of pages1
Publication statusPublished - 01.06.2014
Event Proceedings of the 28th International Congress and Exhibition on Computer Assisted Radiology and Surgery - Fukuoka, Japan
Duration: 25.06.201428.06.2014

Conference

Conference Proceedings of the 28th International Congress and Exhibition on Computer Assisted Radiology and Surgery
Abbreviated title(CARS'14)
Country/TerritoryJapan
CityFukuoka
Period25.06.1428.06.14

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