This slide covers basic imaging systems and their videos for easy understanding of working of these imaging modalities.

1. “Medical Imaging Systems &
Its Applications”
Rajeshwari R ,B.E.,M.E.,(Ph.D).,MISTE.,
Assistant Professor, Biomedical Engineering,
Ph:9597308485

2. KNOWLEDGE OUTCOME
• Role of Medical Imaging System.
• Types of Medical Imaging System.
• Components of Imaging System.
• Application of each type.

3. Medical Imaging
• Medical imaging “refers to techniques and processes
used to create images of various parts of the human
body for diagnostic and treatment purposes ”.
• Types:
 Imaging System using Ionizing Radiations.
eg: X-ray, Fluoroscopy, Angiography, Mammography, Computed Tomography, PET,SPECT.
 Imaging System using Non-Ionizing Radiation.
eg: Ultrasound Imaging, MRI, Endoscopy ,Infrared Imaging, Hyperspectral Imaging.

4. X –Ray Imaging System

5. X Ray Tube

6. Types of X ray Imaging Procedure
• Fluoroscopy
• DSA technique-Angiograph
• Mammograph
• Computed Tomograph

7. Imaging Coronary
vessels-Real Time

8. CT Imaging System

9. 5th Generation CT Scanner & HU

10. MRI IMAGING SYSTEM

11. Ultrasound Imaging System

12. Modes of Ultrasound
• A-mode: A single transducer scans a line through the body with the echoes plotted on screen
as a function of depth.
• B-mode or 2D mode: Array of transducers simultaneously scans a plane through the body
that can be viewed as a two-dimensional image on screen.
• B-flow is a mode that digitally highlights moving reflectors (mainly red blood cells) while
suppressing the signals from the surrounding stationary tissue. It can visualize flowing blood
and surrounding stationary tissues simultaneously.
• M-mode: This can be used to determine the velocity of specific organ structures.
• Doppler mode: This mode makes use of the Doppler effect in measuring and visualizing
blood flow
o Color Doppler: Velocity information is presented as a color-coded overlay on top of a B-
mode image
o Continuous wave (CW) Doppler: Doppler information is sampled along a line through
the body, and all velocities detected at each time point are presented (on a time line)
o Pulsed wave (PW) Doppler: Doppler information is sampled from only a small sample
volume (defined in 2D image), and presented on a timeline

13. Nuclear Imaging System

14. Positron Emission Tomograph

15. Endoscopy- Uses visible light

16. Thermal Imaging System

17. Thankyou
07-11-2020 17