Towards the end of the year, the “medical check-up season” began in various units. The mammogram test used to screen for breast cancer in the medical examination project is probably a project that is confusing for sisters。
It is said to be “challenged” because the posture and feeling at the time of the inspection were not comfortable and because it was radioactive。
Molybdenum target shot, full name mammogram mammography, mg. X-rays have a certain radioactivity, and some female friends are deterred by this: would mammograms harm health? Today, let's talk about a molybdenum shot。
Q: what's the radiation
Response: about 5,000 bananas per breath
Emmm... That's a little rough. Let's see what x-rays make of mammograms
Compared to conventional x-rays, mammogram targets use low-energy "soft rays". Its image is clear and resolution high, it shows the structure and calcification at all levels of the mammary, and it has the best image effect on the mammogram, making it easier to detect microtransformations, with smaller radiation and less harm to humans。
At present, with technological developments, the digitization of x-ray images has been achieved. For example, the mammogram machine, which automatically regulates the camera parameters, uses a significantly reduced x-ray dose for imaging, equivalent to the original one-fifth to one-hundred-one-tenth, and its rays are shot vertically from top to bottom into the area under examination, and, together with the filter filter filtering, removes the excess scatter rays, makes it safer for patients and improves the quality of imaging and automatically obtains the best density and contrast images。
As shown in the figure above, a two-sided mammoth test would require a total of four shots, with positive and tilted positions on both sides of the right and the left。
Turning to the initial topic of “5,000 bananas,” it's more like bananas, and there's radiation in our normal living environment (so we can't talk about the effects without a dose, we don't have bananas)。
We generally use msv to measure the hazards of radiation. According to the report of the united nations scientific committee on the effects of atomic radiation, an average of 2. 4 msv per person per year of radiation from natural background was received globally, equivalent to about 30,000 bananas. An inspection of molybdenum targets amounted to about 0. 4 msv, equivalent to two months of natural radiation exposure in daily life, or five doses of radiation in shanghai flying to new york. If one pack of cigarettes is smoked daily, the annual dose of radiation is about 35 msv, which is much higher than many medical doses。
The following is a comparison of some of the radiation types that are common in daily life with the radiation levels of one banana:
Breast cancer, compared to other cancers, was hidden at an early stage and had to be examined in conjunction with video science. The mammogram survey shows that 2 ~4 % of the normal population have clinically unreachable microclinic mammograms, of which 20 ~30 % are malignant. Regular breast screenings have resulted in 70 per cent of cases of breast cancer in one stage, and the five-year survival rate for early breast cancer is now over 90 per cent。
Did the above answer your question? Now, let's make a summary。
Does mammoth test hurt your health? The answer is that a dose of radiation from a molybdenum test does not cause bodily harm. Of course, pregnant and lactating women try to avoid molybdenum screening。
As for the "eye-tight" test position... That is just to make breast tissue more even, to increase the sharpness of images, to increase the rate of detection of micro-cooks, and to understand better
An examination of a molybdenum target requires the exposure of the top half of all clothes to the breast, with a certain degree of breast pressure, during which the patient may suffer a certain amount of pain, which, because of his or her individual tolerance, is also felt differently, but is generally acceptable。
Molybdenum target:
On the day of the inspection, it was recommended to wear clothing that was easy to wear。
No cosmetics, medicines or ointments should be painted on the chest before inspection, so as not to affect the quality of the image。
Please provide advance information on past medical and surgical history, filling history, etc。
The examination is recommended about one week after menstruation。
Pregnant and lactating women do not recommend screening。
Our eastern and western districts are now equipped with imported molybdenum machine. The orient house can also conduct pre-milk stabbings under molybdenum targeting, be able to locate accurately suspicious calcified stoves that cannot be reached or are small, be able to remove the parts that need to be removed safely and accurately by the surgeon, and keep normal breast tissue as far as possible。
