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SUMMARY:Promotionsvortrag Physik: IMulti-Spectral Analysis of Computed
  Tomography for Multi-Material Quantification
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 00000010000000162F2A31C90BD443BF85C506E05FD0F2
DESCRIPTION:Ankündigung des Promotionsvortrags von: Herrn Jonas Neuma
 nn Since its introduction in 1972\, X-ray computed tomography (CT) has
  become one of the most widely used techniques in medical imaging. Cur
 rently\, CT systems that acquire dual-spectral data are widely availab
 le. These systems can quantify two materials with an arbitrary mass de
 nsity dis-tribution in a single CT scan. In 2021\, clinical CT systems
  equipped with a photon-counting detec-tor (PCD) became available. The
 se systems enable multi-material quantification (MMQ)\, meaning they c
 an quantify three or more suitable materials in a single CT scan. This
  paves the way for new clinical applications. In this talk\, I will fi
 rst introduce CT and two-material quantification using dual-spectral C
 T. Then\, I will discuss the challenges of generalizing this concept t
 o MMQ using multi-spectral CT. One such challenge is the need for a ne
 w drug based on an element with a sufficiently high atomic number to m
 ake the MMQ clinically applicable. I will present an approach to MMQ b
 ased on multi-spectral data. Finally\, I will show how this approach w
 as tested on the first clinical PCD system using ex-perimental drugs t
 hat enable the MMQ: First\, we examined the quantification of the iron
  load in liver-equivalent samples incorporating tungsten in vitro. Sec
 ond\, we examined the delineation of structures filled with iodine and
  tungsten within a biological specimen. (Vortrag auf Englisch) Dem Vor
 trag schließt sich eine Diskussion von 15 Minuten an. Vortrag und Dis
 kussion sind öffentlich. Diesen Verfahrensteilen folgt ein nicht öff
 entliches Rigorosum von 45 Minuten.
DTSTART:20260217T130000Z
DTEND:20260217T143000Z
LOCATION:Hörsaal F\, Biologikum\, Staudtstr. 5\, Erlangen
DTSTAMP:20260407T112138Z
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