Everyone filed into the control room and gathered in front of the machine screen.
Just like what is written in science fiction novels, the cool thing about technology is that the rows of complex digital graphics and control images float on the screen, like the souls of mathematics, physics and chemistry are flying.
"The operating interface seems very complicated." Doctor Ou Feng said after standing at the back and taking a look on tiptoe.
If you have never learned it, the first time you see it, it will be like reading a book written in a foreign language.
The more intelligent the machine is, the more accurate the calculated results must be, which necessarily requires the accuracy of the input data.
How to ensure the accuracy of input data? Refer to the previous membrane lung verification process. It is best to eliminate interference in the way each number is obtained, and it is best to have multiple verification methods to verify it.
To achieve these, for example, the first step is whether the patient shaves his hair. In fact, the gamma knife does not require shaving the hair, and it is best to cut long hair short. The obvious advantage of shaving and cutting hair short is that it can eliminate interference and help doctors and machines to locate more accurately.
Considering that this patient has seven tumors in his brain and is being treated with the latest machine, and that hair loss is likely after radiotherapy anyway, the patient's request is definitely to eliminate all the tumors at once, so it would be better to simply shave his hair for the most accurate positioning.
Don't be afraid of shaving your hair, as it will grow back quickly. What you are most afraid of is that your hair won't grow back, such as hair loss and baldness, which may be incurable.
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The second step is positioning scanning, including repeated imaging examinations before treatment. Doctors prefer MRI rather than CT because MRI does not produce metal artifacts compared to CT. The purpose is also to obtain accurate data and eliminate interference.
The third step is dose metering, which can be called the patient's Gamma Knife treatment plan. I have just introduced the principle of the Gamma Knife, such as where the flying needle of the flying knife should be shot at the tumor, and the intensity density distribution map of the flying needle. These all require the doctor's detailed plan and input into the machine in advance. The reference is the last positioning film after the patient is placed on the positioning head frame. So after the head frame is placed, the patient needs to enter the MRI room for the last scan positioning.
A group of doctors stood here, exploring the machine program, comparing it with the patient's previous MRI scans, and carefully examining whether the treatment could be done properly, so as to avoid putting a head frame on the patient and then being unable to regret.
Dr. Sun said honestly, "I can't guarantee 100% that I can remove all the tumors for her in one go."
This means that the tumor lesions captured by Dr. Song's superhuman eyes are too small. In the eyes of radiation oncologists, it is difficult to say whether these dots as small as ants are tumors.
On the other hand, some small tumors are located near important parts of the brain, such as the thalamus we talked about before, which is close to the brain stem. Radiotherapy is not a real scalpel, but it is similar to using a knife to kill tumors, which may cause accidental damage to surrounding areas or other parts. Therefore, for tumors located deep in the brain, such as those in neurosurgery such as Gamma Knife, doctors pay special attention to the cautious areas.
The consequences of not killing accurately are not only that it will damage the normal functional areas like neurosurgery, it may even stimulate the surrounding free cancer cells to grow rapidly, resulting in putting the cart before the horse.
Teacher Sun’s concerns are justified.
Given the patient's current condition, it may be possible to consider not completing the procedure all at once, but to observe and wait until the tumor grows larger before doing it a second time, or to directly add whole-brain radiotherapy.
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