@misc{DemarsWieglebHarperetal., author = {Demars, Beno{\^i}t O. L. and Wiegleb, Gerhard and Harper, David M. and Br{\"o}ring, Udo and Brux, Holger and Herr, Wolfgang}, title = {Aquatic plant dynamics in lowland river networks: connectivity, management and climate change}, series = {Water}, volume = {6}, journal = {Water}, number = {4}, issn = {2073-4441}, doi = {10.3390/w6040868}, pages = {868 -- 911}, language = {en} } @misc{WieglebBroeringFilettietal., author = {Wiegleb, Gerhard and Br{\"o}ring, Udo and Filetti, Mirko and Brux, Holger and Herr, Wolfgang}, title = {Long-term dynamics of macrophyte dominance and growth form types in two northwest German lowland streams}, series = {Freshwater Biology}, volume = {59}, journal = {Freshwater Biology}, number = {5}, issn = {0046-5070}, pages = {1012 -- 1023}, language = {en} } @misc{WieglebHerrZanderetal., author = {Wiegleb, Gerhard and Herr, Wolfgang and Zander, B{\"a}rbel and Br{\"o}ring, Udo and Brux, Holger and Weyer, Klaus van de}, title = {Natural variation of macrophyte vegetation in lowland streams at the regional level}, series = {Limnologica}, journal = {Limnologica}, number = {vol. 51}, issn = {1873-5851}, doi = {doi:10.1016/j.limno.2014.12.005}, pages = {53 -- 62}, language = {en} } @misc{DropcoKaiserWagneretal., author = {Dropco, Ivor and Kaiser, Ulrich and Wagner, Lola and Brunner, Stefan M. and Schlitt, Hans J{\"u}rgen and Stroszcynski, Christian and Jung, Friedrich and Yi, Dong and Herr, Wolfgang and Jung, Ernst Michael}, title = {Color mapping using ultrasound system-integrated perfusion software for evaluation of focal liver lesions: a possible first step for more independent reading}, series = {Journal of Gastrointestinal and Liver Diseases}, volume = {32}, journal = {Journal of Gastrointestinal and Liver Diseases}, number = {4}, issn = {1842-1121}, doi = {10.15403/jgld-4997}, pages = {479 -- 487}, abstract = {Aims To assess the value of using integrated parametric ultrasound software for contrast-enhanced ultrasonography (CEUS) of liver tumors. Methods 107 patients with liver tumors were studied. CEUS were performed to detect focal lesions. Parametric images were based on continuous CINE LOOPs, from the early-arterial phase (15 s) to the portal-venous phase (1 min) generated by perfusion software. The evaluations of the parametric images and their dignity for liver lesions were performed independently by an experienced and a less-experienced investigator. Computed tomography, magnetic resonance imaging scans or histological analysis were used as references. Results High parametric image quality were obtained in all patients. Among the patients, 44\% lesions were benign, 56\% were malignant. The experienced investigator correctly classified 46 of 47 (98\%) as benign, and 60 of 60 (100\%) as malignant tumors based on the parametric images. The less-experienced investigator correctly classified 39 of 47 (83\%) as benign, and 49 of 60 (82\%) malignant tumors, acheaving a high statistical accuracy of 98\% with this type of diagnostic. Conclusion Parametric imaging for grading the malignant degree of tumor may be a good complement to existing ultrasound techniques and was particularly helpful for improving the assessments of the less-experienced examiner.}, language = {en} }