System added to X-ray tube to change Primary beam intensity give the equal quantity radiaton to all parts of the orgain ...
- a- Collimator
- b- Grid
- c- Wedge filter
- d- Cassette.
The correct answer is c. Wedge filter.
Here's why:
- Purpose:
A wedge filter is specifically designed to alter the intensity of the primary X-ray beam in a controlled manner. This is crucial for ensuring that different parts of the organ or body region receive a more uniform dose of radiation, even when their thicknesses vary.
- Shape:
Wedge filters are typically shaped like a wedge, gradually attenuating the X-ray beam as it passes through them. This creates a progressive decrease in beam intensity across the field, compensating for differences in tissue thickness.
- Placement:
They are positioned within the X-ray beam path, either attached to the X-ray tube housing or placed externally on the collimator.
Other Options:
Here's why the other options are incorrect:
a. Collimator:
While essential for shaping and restricting the X-ray beam, a collimator doesn't directly modify beam intensity. Its primary purpose is to limit the radiation field to the desired area of interest.
b. Grid:
A grid is used to reduce scattered radiation and improve image contrast, but it doesn't change the primary beam intensity itself.
d. Cassette:
The cassette is the device that holds the imaging plate or film, capturing the X-ray image. It doesn't play a role in modifying beam intensity.
Therefore, the wedge filter is the system added to the X-ray tube to achieve a more even distribution of radiation across different parts of the organ, ensuring diagnostic image quality while minimizing unnecessary radiation exposure to thinner areas.
