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@ARTICLE{Wirkert:130948,
author = {S. Wirkert$^*$ and H. Kenngott and B. Mayer and P.
Mietkowski and M. Wagner and P. Sauer and N. T. Clancy and
D. S. Elson and L. Maier-Hein$^*$},
title = {{R}obust near real-time estimation of physiological
parameters from megapixel multispectral images with inverse
{M}onte {C}arlo and random forest regression.},
journal = {International journal of computer assisted radiology and
surgery},
volume = {11},
number = {6},
issn = {1861-6429},
address = {Berlin},
publisher = {Springer},
reportid = {DKFZ-2017-06024},
pages = {909 - 917},
year = {2016},
abstract = {Multispectral imaging can provide reflectance measurements
at multiple spectral bands for each image pixel. These
measurements can be used for estimation of important
physiological parameters, such as oxygenation, which can
provide indicators for the success of surgical treatment or
the presence of abnormal tissue. The goal of this work was
to develop a method to estimate physiological parameters in
an accurate and rapid manner suited for modern
high-resolution laparoscopic images.While previous methods
for oxygenation estimation are based on either simple linear
methods or complex model-based approaches exclusively suited
for off-line processing, we propose a new approach that
combines the high accuracy of model-based approaches with
the speed and robustness of modern machine learning methods.
Our concept is based on training random forest regressors
using reflectance spectra generated with Monte Carlo
simulations.According to extensive in silico and in vivo
experiments, the method features higher accuracy and
robustness than state-of-the-art online methods and is
orders of magnitude faster than other nonlinear regression
based methods.Our current implementation allows for near
real-time oxygenation estimation from megapixel
multispectral images and is thus well suited for online
tissue analysis.},
keywords = {Hemoglobins (NLM Chemicals) / Oxygen (NLM Chemicals)},
cin = {E131},
ddc = {610},
cid = {I:(DE-He78)E131-20160331},
pnm = {315 - Imaging and radiooncology (POF3-315)},
pid = {G:(DE-HGF)POF3-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:27142459},
pmc = {pmc:PMC4893375},
doi = {10.1007/s11548-016-1376-5},
url = {https://inrepo02.dkfz.de/record/130948},
}