Reconstruction of absorption images by decoupling reflection losses and tissue absorption from attenuation measurements

Research topic/area

Medical ultrasound imaging

Type of thesis

Bachelor / Master

Start time

01.09.2026

Application deadline

31.08.2026

Duration of the thesis

6 months

Description

Currently 3D Ultrasound Tomography (USCT) reconstructs attenuation images from the measured signal data by an Algebraic Reconstruction Technique (ART). A straight ray approximation is used and the attenuation of the sound wave is detected from the acquired signal data. Yet, the detected attenuation of a signal consists of a reflection loss due to scattering and a tissue specific absorption. Especially the tissue specific absorption is of interest for medical interpretation since it is known from literature that certain absorption behavior (often modeled by the power absorption law) is indicative for tumor tissue. In this thesis the aim is to explore potential methods to reconstruct the absorption part from the attenuation measurements only, i.e. to separate reflection losses from absorption either on signal basis or in the image space. Methods should first be evaluated on simple synthetic examples, e.g. based on k-Wave simulations before applying them to experimental data.

Requirement

Requirements for students

• Interest in medical imaging, ultrasound, and (MATLAB) programming

Faculty departments

• Engineering sciences
  Electrical engineering & information technologies
  Mechatronics & information technologies
  Biomedical Engineering
  Electrical Engineering and Information Technology
  Mechatronics and Information Technology
  Medical technology
• Natural sciences and Technology
  Geophysics
  Physics
  Geophysics
  Physics

Supervision

Title, first name, last name

Dr. Torsten Hopp and PD Dr. Nicole Ruiter

Organizational unit

IPE

Email address

nicole.ruiter@kit.edu

Link to personal homepage/personal page

Website

Application via email

Application documents

• Cover letter
• Curriculum vitae
• Grade transcript

E-Mail Address for application
Senden Sie die oben genannten Bewerbungsunterlagen bitte per Mail an nicole.ruiter@kit.edu


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