Main Components Of An X-Ray Rays Case Study
TECHNOLOGY BASICS:
1) What are the main components of an X-ray Tube?
The x-ray tube consists of an electrode pair - a cathode and an anode. The cathode is a negatively charged heated filament made from tungsten. The anode is a positively charged flat disc, also made from tungsten. The electrode pair sits inside a glass vacuum tube, which is lined with lead for protection.
2) State the two interactions that occur in the X-ray tube to produce the x-ray beam
Bermsstralhung interaction and Characteristic interaction.
3) The X-ray beam is attenuated by the human body, briefly explain what this term means.
Attenuation is when the various tissues in the body absorb x-ray photons and transfer their energy to emit a beam onto an image receptor. …show more content…
Explain two reasons why contrast may be given to patients prior to x-ray
In regular x-rays, soft tissue cannot be seen clearly. Contrast media is therefore used to examine organs or the circulatory system more closely.
To bring organs in the digestive and endocrine systems into focus, a patient will swallow a barium compound. This allows organ function to be seen, e.g. in GIT studies.
To examine blood vessels, contrast media can be injected straight into the patient’s bloodstream, e.g. in angiography
7) Outline the difference between projection radiography and fluoroscopy
Projection Radiography: In a regular x-ray, single radiographs are taken of a region of interest. Collimation is square or rectangular, and the image is not inverted (bone shows up white, air shows up black).
Fluoroscopy: In fluoroscopy, the x-rays pass through the body onto a fluorescent screen, creating a moving x-ray image. Collimation is circular, and the image is inverted (bone shows up black, air shows up white).
Case Study 1
Your 18 year old female friend has been referred by her GP for a Lumbar spine x-ray. The GP is concerned that she has …show more content…
Before you enter the x-ray room, you will be asked to change into a hospital gown and remove any jewellery because buttons, zips, and other metals could interfere with the image. It’s important to let the radiographer know if there’s any chance you could be pregnant, since radiation may harm a developing baby. The procedure should only take about 15 minutes, and you’ll be exposed to radiation for only a few seconds. When you enter the x-ray room, the radiographer will position you standing up in front of the x-ray machine, and they will give you lead shielding to wear around your waist to protect your reproductive organs. They will leave the room to perform the x-ray, and you’ll be asked to hold your breath and stay still for 2-3 seconds. Two x-rays are usually taken so that the doctor can get a better look at your spine, one from the front, and one from the side. After the first x-ray, the radiographer will come back into the room to reposition you for the second one, which will be from the side. When the exam is over, you can go home and a radiologist will examine your x-rays. You should get your results in a few
1) What are the main components of an X-ray Tube?
The x-ray tube consists of an electrode pair - a cathode and an anode. The cathode is a negatively charged heated filament made from tungsten. The anode is a positively charged flat disc, also made from tungsten. The electrode pair sits inside a glass vacuum tube, which is lined with lead for protection.
2) State the two interactions that occur in the X-ray tube to produce the x-ray beam
Bermsstralhung interaction and Characteristic interaction.
3) The X-ray beam is attenuated by the human body, briefly explain what this term means.
Attenuation is when the various tissues in the body absorb x-ray photons and transfer their energy to emit a beam onto an image receptor. …show more content…
Explain two reasons why contrast may be given to patients prior to x-ray
In regular x-rays, soft tissue cannot be seen clearly. Contrast media is therefore used to examine organs or the circulatory system more closely.
To bring organs in the digestive and endocrine systems into focus, a patient will swallow a barium compound. This allows organ function to be seen, e.g. in GIT studies.
To examine blood vessels, contrast media can be injected straight into the patient’s bloodstream, e.g. in angiography
7) Outline the difference between projection radiography and fluoroscopy
Projection Radiography: In a regular x-ray, single radiographs are taken of a region of interest. Collimation is square or rectangular, and the image is not inverted (bone shows up white, air shows up black).
Fluoroscopy: In fluoroscopy, the x-rays pass through the body onto a fluorescent screen, creating a moving x-ray image. Collimation is circular, and the image is inverted (bone shows up black, air shows up white).
Case Study 1
Your 18 year old female friend has been referred by her GP for a Lumbar spine x-ray. The GP is concerned that she has …show more content…
Before you enter the x-ray room, you will be asked to change into a hospital gown and remove any jewellery because buttons, zips, and other metals could interfere with the image. It’s important to let the radiographer know if there’s any chance you could be pregnant, since radiation may harm a developing baby. The procedure should only take about 15 minutes, and you’ll be exposed to radiation for only a few seconds. When you enter the x-ray room, the radiographer will position you standing up in front of the x-ray machine, and they will give you lead shielding to wear around your waist to protect your reproductive organs. They will leave the room to perform the x-ray, and you’ll be asked to hold your breath and stay still for 2-3 seconds. Two x-rays are usually taken so that the doctor can get a better look at your spine, one from the front, and one from the side. After the first x-ray, the radiographer will come back into the room to reposition you for the second one, which will be from the side. When the exam is over, you can go home and a radiologist will examine your x-rays. You should get your results in a few