Прочитайте текст и определите какой из заголовков соответствует тексту The use of X-rays in medicine...: ответ на тест 607030 - Английский язык

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The use of X-rays in medicine was a huge breakthrough at the turn of the century. British engineer Godfrey Hounsfield came up with an improvement on the 70-year-old technology. It combined X-ray images with a computer.
Hounsfield called this technology a CT (computerized tomography) scan, also called CAT scan (computerized axial tomography). It was especially useful for looking at head injuries and brain problems, because it showed about 100 times greater detail in soft tissues than traditional X-rays. Hounsfield was knighted and won the 1979 Nobel Prize.

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The use of X-rays in medicine was a huge breakthrough at the turn of the century. British engineer Godfrey Hounsfield came up with an improvement on the 70-year-old technology. It combined X-ray images with a computer.
Hounsfield called this technology a CT (computerized tomography) scan, also called CAT scan (computerized axial tomography). It was especially useful for looking at head injuries and brain problems, because it showed about 100 times greater detail in soft tissues than traditional X-rays. Hounsfield was knighted and won the 1979 Nobel Prize.

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In the 1980s another imaging technique was added to the tools of medicine. Nuclear magnetic resonance is a technology that, using a gigantic magnet, can line up the protons – or nuclei of hydrogen atoms – in an object (or organism) to align with the north-south polarity of the magnet. A computer “reads” this to create an image in a process known as MRI, magnetic resonance imaging. MRI can give an image of any plane through the body, while the patient’s experience consists of lying still in a body-sized tube, and hearing the click of the machinery.

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In the last 20 years the use of atom medicine has become so widespread that every big medical centre uses some form of it in diagnosis and treatment. Thousands of hospitals all over the world have had very successful results with radioactive iodine for thyroid cases.
The chief medical use of radioisotopes is against cancer. Every year thousands of cancer patients are being treated with radio-cobalt, which in many ways is better than X-ray treatment.

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Scientists have discovered that the beginning of coronary thrombosis can be detected and located by the use of radioactive iodine. The isotope of iodine is attracted to inflamed tissues and thus shows the exact place of thrombosis.
Electrocardiograms do not always show the beginning of a heart attack. The use of the radio-active iodine is better than electrocardiogram in this respect: it shows exactly the location of the thrombosis and it is helpful in treatment.

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In some cases it is necessary to make a brain operation, cutting several nerve tracts. In 1958 surgeons made this operation for the first time with an “atomic knife” – a proton beam that required no cutting into the brain. Usually such operation required weeks of preparation and many weeks of recovery. The atomic operation took about two hours; as soon as it was over, the patient walked off to a meal. He did not feel any pain and only said that he was tired from sitting in the same position for two hours. During the operation the patient was rotated from time to time so that the beam from synchrocyclotron could strike the brain at different angels. The surgeons directed the beam from another room, giving the patient instructions from time to time by the telephone.
The proton beam was 10 mm wide and 2 mm thick.