Constantine Simopoulos
Siemens
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Constantine Simopoulos.
Journal of the Acoustical Society of America | 1981
John I. Jackson; Lewis J. Thomas; Constantine Simopoulos
Disclosed are a system and method of selecting one or more operational parameters of an ultrasonic imaging system. In particular, methods and means are disclosed for automatically or semi-automatically determining a best operating frequency, or for determining whether a system should operate in a fundamental imaging mode or a harmonic imaging mode.
Journal of the Acoustical Society of America | 2009
James E. Chomas; Rickard C. Loftman; Constantine Simopoulos
Methods are provided for automatic setting of parameters for contrast agent quantification. Various processes may improve quantification. For example, for consistency in contrast agent quantification, a gain or other setting of an ultrasound system is automatically determined in response to destruction of the contrast agent or at the initiation of the contrast agent quantification procedure. Automatic setting of an adaptive gain provides equalized image intensity for each repetition of a contrast agent quantification procedure based on a same triggering event, the destruction of contrast agent. By synchronizing the adaptive setting algorithms with contrast agent destruction, similar base line information is provided for each iteration of a contrast agent quantification procedure. As another example, the contrast agent gain setting treats acoustic signals representing tissue or other non-contrast agent structure as noise, mapping the tissue values to a substantially constant low value within the dynamic range. As yet another example, by segmenting out blood pools or other areas of contrast agent likely to have contrast agents even after destruction, the resulting gain is more likely sensitive to the detection of perfused contrast agents.
Journal of the Acoustical Society of America | 2002
Constantine Simopoulos; Kutay F. Ustuner; Anming He Cai; John I. Jackson; Matthew O'Donnell
Journal of the Acoustical Society of America | 2008
Mü{umlaut over }ge M. Bakircioglu; Robert W. Steins; Constantine Simopoulos
Archive | 2006
Constantine Simopoulos; Lewis J. Thomas; Shaohua Kevin Zhou; Dorin Comaniciu; Bogdan Georgescu
Journal of the Acoustical Society of America | 2010
Constantine Simopoulos; Shaohua Kevin Zhou; JinHyeong Park; Dorin Comaniciu; Bogdan Georgescu
Journal of the Acoustical Society of America | 2010
Constantine Simopoulos; Kutay F. Ustuner
Journal of the Acoustical Society of America | 2013
Constantine Simopoulos
Archive | 2004
Constantine Simopoulos
Archive | 2004
James E. Chomas; Rickard C. Loftman; Constantine Simopoulos