Transcript Intended learning outcomes of the course (ILOS)

Advanced Biomedical
Imaging
Dr. Azza Helal
A. Prof. of Medical Physics
Faculty of Medicine
Alexandria University
Intended learning outcomes of the course (ILOS)

To understand physical principles of imaging
modalities.

Aiming to apply these modalities in a safe and
effective way.
Gamma imaging
&
Tomography with Radionuclides

A medical imaging that uses radioactive isotopes and
depends on process of radioactive decay in diagnosis.

By counting radioactivity & its distribution in the organ.

So it is capable of detecting physiological function fo
.snagro
Gamma Camera Planar Imaging
single projection view
no image reconstruction is required
Tomography with Radionuclides
Positron Emission
Tomography
(PET)
Single Photon Emission
Tomography
)SPECT)
PET CT images show metastases to left supraclavicular lymph node a and to liver b
Comparison of different imaging
modalities
1.
Projection views
2.
Ionizing radiation
3.
Speed
4.
Contrast resolution
1.
Projection views

Limited visualization
Plain x ray & Isotope scan

Flexible imaging planes
Cross-section views
CT & MRI
Flexible imaging
planes with MRI.
MRI angiography
2.
Ionizing radiation

Plain x - ray, CT & isotope scan
3. Speed
US
Plain x ray
CT
MRI
Isotope scan
Fast
Slow
4. Contrast
Plain X Ray
CT
Physical and electron density
US
Transmitting & receiving high
frequency sound wave
Isotope scan
Uptake of radioactive tracer
MRI
Transmitting & receiving radiowaves inside a high magnetic field
(Water concentration & Magnetic
properties)
Contrast resolution
Plain x ray & CT reflect bone contrast
MRI reflects soft tissue contrast
Assignments

One student will be selected for assignment
Suggested Readings

David Sutton’s Radiology

Physics for medical imaging by RF Fare &
PJ Allisy-Roberts.
Question

Mention different components of x ray
tube?