The x-ray is one of the most common methods for producing graphic images of bones and internal organs. Physicians claim that most modern methods of x-ray examination is absolutely safe for human health, because during the procedure used is negligibly small doses of radiation.
What is radiology?
Special tube inside the x-ray machine sends a controlled beam of radiation in a given direction. Dense tissues such as bone, block most of the radiation, and soft tissues, such as fat or muscle, to a lesser extent. After passing through the body, the beam hits the film, on which is imprinted the image.
Hard tissue that block a greater amount of radiation appear in white, soft fabrics in various shades of gray, and the organs which contain air (for example, light) – black. Tissue tumors, usually denser than other fabrics, so they are often visible as lighter shades of gray.
Radiographic study using contrast agents give more detailed information. The patient receives a dose of contrast (orally, rectally, via a catheter or by injection), and then passes the examination. Contrast allows you to visualize the hollow organs (blood vessels, lungs, digestive system, etc.).
How to prepare for the x-ray?
Before the examination, you must remove all metal objects that could interfere with image quality.
In preparation for the examination using a contrast agent depends on the type of research, for example, you may be asked not to eat anything before the test. In any case, the doctor will guide you on the study, will instruct you.
How do x-rays?
For the test, you will be asked to remove clothing and metal objects, which can affect image quality, with the body part to be examined. You will be asked to sit, lie down, or stand at the x-ray machine. The technologist will include a car that has been enlightened by the light beam of the desired area. Perhaps other parts of the body will close the special shields that had not been exposed to radiation. Usually technologist leaves the room to operate the machine by remote control. You can hear a short buzzing or clicking sound when the device works.
How much time do x-rays?
During the study, you will be in the machine just a few seconds, the rest of the time specified below is required to process the received image.
Time necessary for processing the x-ray results:
· Standard x-ray examination: from 5 to 10 minutes
· Angiography: from 1 to 3 hours
· Intravenous pyelography: about 1 hour
· Outflow: 2 to 5 hours
Possible complications and side effects after x-rays
Modern x-ray examination is not dangerous when used rationally. “Much research was conducted, which confirmed that the x-ray radiation in doses in which it now is used, little or no clinical significance is not. On modern devices with conventional diagnostics to exceed the maximum dose is simply impossible. You need to take care of oneself, first and foremost, children. The lower the age, the more the body’s sensitivity to ionizing radiation. But older people can never think about how much they did x-ray studies.
Standard x-ray examination of the problems is unlikely.
Angiography: you may feel warmth or a burning sensation. Also the contrast material may cause nausea, vomiting, redness, itching or bitter/salty taste. In rare cases, may occur severe allergic reaction to the iodine contained in the contrast agent.
There is a small risk of thrombus formation, which can block blood vessels. There is also the risk of damage to the blood vessel by the catheter, which can lead to internal bleeding.
IVP: this test is generally safe, but should not be prescribed to people who are allergic to the contrast with iodine. In rare cases of severe reaction to contrast material requiring emergency care.
Outflow: allergic reaction to the contrast. The contrast can change the color of urine, feces and even skin within a few days, but will eventually disappear.