In vivo time-harmonic ultrasound elastography of the human brain detects acute cerebral stiffness changes induced by intracranial pressure variations 
Tzschätzsch, H., Kreft, B., Schrank, F., Bergs, J., Braun, J., Sack, I. PMID: 30559367 PMCID: PMC6297160 DOI: 10.1038/s41598-018-36191-9 Sci Rep. 2018 Dec 17;8(1):17888. (Open Access)

Ultrasound time-harmonic elastography: detection of liver fibrosis in extremely obese adolescents with non-alcoholic fatty liver disease
Hudert C, Tzschätzsch H, Guo J, Rudolph B, Bläker H, Loddenkemper C, Luck W, Müller H-P, Baumgart DC, Hamm B, Braun J, Holzhütter HG, Wiegand S, Sack, I. Radiology 2018 May 15

Full-field-of-view time harmonic elastography of the native kidney
Marticorena Garcia SR, Großmann M, Lang ST, Nguyen Trong M, Schultz M, Guo J, Hamm B, Braun J, Sack I, Tzschätzsch H. Ultrasound in Medicine and Biology 2018

Time-Harmonic Ultrasound elastography of theDescending Abdominal Aorta: Initial Results
Schaafs LA, Tzschätzsch H, van der Giet M, Reshetnik A, Steffen IG, Hamm B, Braun J, Sack I, Elgeti T. Ultrasound Med Biol. 2017 Aug 14. pii: S0301-5629(17)30320-4. doi: 10.1016/j.ultrasmedbio.2017.07.001. [Epub ahead of print] PubMed PMID: 28818306.

Reduction of Hepatic Venous Blood Flow by the Valsalva Maneuver Decreases Liver Stiffness
Ipek-Ugay S, Tzschätzsch H, Braun J, Fischer T, Sack I. Physiologic . J Ultrasound Med. 2017 Jul;36(7):1305-1311. doi: 10.7863/ultra.16.07046. Epub 2017 Mar 20. PubMed PMID: 28319252.

Time-Harmonic Elastography of the Liver is Sensitive to Intrahepatic Pressure Gradient and Liver Decompression after Transjugular Intrahepatic Portosystemic Shunt (TIPS) Implantation
Tzschätzsch H, Sack I, Marticorena Garcia SR, Ipek-Ugay S, Braun J, Hamm B, Althoff CE. Ultrasound Med Biol. 2017 Mar;43(3):595-600. doi: 10.1016/j.ultrasmedbio.2016.10.007. Epub 2016 Dec 12. PubMed PMID: 27979668.

Two-Dimensional Time-Harmonic Elastography of the Human Liver and Spleen
Tzschätzsch H, Nguyen Trong M, Scheuermann T, Ipek-Ugay S, Fischer T, Schultz M, Braun J, Sack I. Ultrasound Med Biol. 2016 Nov;42(11):2562-2571. doi: 10.1016/j.ultrasmedbio.2016.07.004. Epub 2016 Aug 23. PubMed PMID: 27567061.

Time Harmonic Elastography Reveals Sensitivity of Liver Stiffness to Water Ingestion
Ipek-Ugay S, Tzschätzsch H, Hudert C, Marticorena Garcia SR, Fischer T, Braun J, Althoff C, Sack I. Ultrasound Med Biol. 2016 Jun;42(6):1289-94. doi: 10.1016/j.ultrasmedbio.2015.12.026. Epub 2016 Mar 10. PubMed PMID: 26971462.

Multifrequency time-harmonic elastography for the measurement of liver viscoelasticity in large tissue windows
Tzschätzsch H, Ipek-Ugay S, Trong MN, Guo J, Eggers J, Gentz E, Fischer T, Schultz M, Braun J, Sack I. Ultrasound Med Biol. 2015 Mar;41(3):724-33. doi: 10.1016/j.ultrasmedbio.2014.11.009. Epub 2015
Jan 28. PubMed PMID: 25638319.

In vivo time-harmonic multifrequency elastography of the human liver
Tzschätzsch H, Ipek-Ugay S, Guo J, Streitberger KJ, Gentz E, Fischer T, Klaua R, Schultz M, Braun J, Sack I. Phys Med Biol. 2014 Apr 7;59(7):1641-54. doi: 10.1088/0031-9155/59/7/1641. Epub 2014 Mar 10. PubMed PMID: 24614751.

Isovolumetric elasticity alteration in the human heart detected by in vivo time-harmonic elastography
Tzschätzsch H, Hättasch R, Knebel F, Klaua R, Schultz M, Jenderka KV, Braun J, Sack I. Ultrasound Med Biol. 2013 Dec;39(12):2272-8. doi: 10.1016/j.ultrasmedbio.2013.07.003. Epub 2013 Sep 11. PubMed PMID: 24035628.

In Vivo time harmonic elastography of the human heart
Tzschätzsch H, Elgeti T, Rettig K, Kargel C, Klaua R, Schultz M, Braun J, Sack I. Ultrasound Med Biol. 2012 Feb;38(2):214-22. doi: 10.1016/j.ultrasmedbio.2011.11.002. Epub 2011 Dec 16. PubMed PMID: 22178163.