A topic regarding medical radiology

1. MEDICAL
THERMOGRAPHY
Submitted by-
Sazzad Eqbal
2nd year, Group- 11
E-mail: sazzade4@gmail.com

2. Medical thermography
• Also called Digital Infrared Thermal Imaging – DITI is
used as a method of research for early pre-clinical
diagnosis and control during treatment of homeostatic
imbalances. It is a non-destructive material testing
method. It uses infrared (IR) cameras to record IR
radiation emitted by originally warm or artificially heated
materials. These recorded data is then processed to
determine defects in the tested material. This defect
determination can be in a qualitative or quantitative way,
depending on the specific evaluation method. This
process is a computer based process.

3. Principle method
• Thermography is a non-invasive, non-contact tool that
uses the heat from your body to aid in making diagnosis
of health care conditions. Thermography equipment
usually has two parts, The IR camera and a standard PC
or laptop computer. These systems have only a few
controls and relatively easy to use. The systems measure
temperatures ranging from 10 C – 55 C to an accuracy of
0.1 C. These systems are computer based and therefore
able to store tons of thousands of images.

5. Practical applications
• Used to diagnose breast cancer.
• Extra cranial vessel diseases.
• Neural, Muscular and Skeletal diseases.
• Vertebrae (Nervous problems / Arthritis).
• Lower extremity vessel diseases.
• CFRP testing ( Carbon Fibre Reinforced Plastic)

6. Arrangement of the device
• Medical thermography equipment usually has two parts,
The IR camera and a standard computer. This system
have only a few controls, isotherm or grey scale, and
usually include image manipulation, isothermal
temperature mapping, and point by point temperature
measurement with a cursor or statistical region of interest.
The systems measure temperatures ranging from 10 C –
55 C to an accuracy of 0.1 C. Focus adjustments should
cover small areas down to 75 × 75 mm.

8. Types of thermography
• There are two types of thermography.
1. Active thermography: In active thermography, an energy
source is required to produce a thermal contrast. The
detection can be occurred either hot (active) or the cold
(passive) spot on the surface.
2. Passive thermography: In the passive thermography,
inspected part are at higher or lower temperature than
the background.

9. Advantages
• It is a non-contact type technique.
• A large surface area can be scanned in no time.
• Presented in visual and digital form.
• Software backup for image processing and analysis.
• Requires very little skill for monitoring.

10. Disadvantages
• Loss of instrument is relatively high.
• Unable to detect the inside temperature if the medium is
separated by glass / polythene material etc.
• Difficult to interpret even with experience.
• Training and staying proficient is time consuming.

12. Thank you for your
Attention