X-Ray & Digital Subtraction Angiography techniques

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                                          X-Ray and DSA  

Introduction - It is one of the oldest methods of imaging which starts with the accidental discovery of X-ray by Wilhelm Knored Roentgen, a German physicist in 1895.
 The branch of science that deals with the study of X-ray for the detection and treatment of diseases are called Radiology.

X ray of chestPrinciple - High dose X-ray is passed through the body where the body absorbs this radiation and scatter this radiation to all over the body and the remaining x-ray pattern is recorded for later evolution.

Uses -
  •  X-ray imaging is usually applied in detecting bone fractures and dislocations.
  •            This technique is also advantageous in detecting the disease of the heart and lungs.
  •            In Dental Examination.
  •             In Mammography
DSA of BrainDigital Subtraction Angiography (DSA) - DSA is an imaging technique that produces clear views of flowing blood in vessels and indicates the presence of blockages, If any. Angiography is taken of the organ, for example, heart and its major blood vessels and stored on a computer. A second angiograph is taken after a contact agent containing iodine, which is opaque to X-ray, has been injected into the bloodstream. The first image is digitally substrated from the second leaving behind a clear outline of the blood flow to heart, brain or kidneys. 

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