The document discusses the control of scattered radiation in x-ray beams. It describes various beam limiting devices used, including diaphragms, compression bands, grids, and cones. Grids are discussed in more detail, including linear grids, focused grids, cross grids, and different types of grid movement mechanisms such as oscillating, reciprocating, vibrating, and single stroke movements. Grid selection factors are also mentioned.

1. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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Part8: The control of scatteredradiation

2. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
the control of scattered radiation
The significance of scatter
diaphragms Compression bands Grids
cones
the control of scattered radiation
Beam limiting device

3. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com

4. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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5. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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6. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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7. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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8. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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9. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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10. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
Compression Band
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11. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
X-ray beam
lamp
Diaphragm leaf
mirror
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12. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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13. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
The secondary grid radiation
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14. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
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15. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
Linear grid
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16. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
focused grid
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17. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
cross grid
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18. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
8- Grid movement
Feature common to all types of bucky
assemblies (moving grid mechanisms)
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19. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
The type of grid movement
1. The simple oscillating movement
2. The reciprocating movement
3. The vibrating or trill movement
4. The single stroke movement — this is not installed in any
units purchased today but may well be found in old units
1. The simple oscillating movement
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20. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
2. The reciprocating movement
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21. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
3. The vibrating or trill movement
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22. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
4. The single stroke movement
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23. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
The stroboscopic effect
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24. By: Eng. Mohsen khalaf , CASBEC – Faculty of engineering - Cairo university
E-mail: m_ksoliman@yahoo.com
Grid selection
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