19306901

SoSe 21: Medical Imaging

Jürgen Braun

Additional information / Pre-requisites

Target audience

Students in the master’s program

Conditions of participation

Bachelor degree

Homepage

http://medinfo.charite.de

Comments

Lecture contents

Preliminary meeting: organization – attendance issues – exercises – examination regulations.
Introduction – imaging modalities – image properties – computers in medical imaging systems.
Image quality: image contrast – spatial resolution – signal noise – digitalisation of analog signals / storage in numerical form – sampling rate / aliasing.
Interaction between electromagnetic radiation and matter – particles – electromagnetic radiation – absorption of energy – dosage – radiobiology.
X-ray imaging: X-ray tube assembly – radiation generation – projection method – magnification – scattering – detectors – dual energy method – applications.
Computed tomography: technical development – radiation source – detectors – image reconstruction – Hounsfield values – image quality – image artefacts – applications.
Methods of nuclear medicine: functional imaging – radioactive decay modes – coincidence – generation of radionuclides in cyclotrons – tracers – detectors – image reconstruction – quality assurance – applications.
Magnetic resonance imaging I: magnetism – nuclear spin – excitation – signal acquisition – relaxation mechanisms – signal reconstruction in 1D – applications of 1D techniques.
Magnetic resonance imaging II: magnetic field gradients – spatial resolution – spin echo – gradient echo – image reconstruction – pulse sequences.
Magnetic resonance imaging III: image contrast – advanced imaging techniques – image artefacts – applications – patient exclusion criteria.
Demonstration MRI-Scanner (venue location: Charité-Universitätsmedizin Berlin).
Ultrasound imaging: properties of longitudinal waves – generation / detection of ultrasound waves – acoustic impedance – reflection – scattering – data acquisition modes – Doppler methods – image artefacts – applications.
Demonstration ultrasound imaging (portable scanner).
Consolidation of the course contents: presentation of recent medical imaging related research projects of the Institutes of Medical Informatics and Radiology.