Chapter 947

When Chen Qun came to his group's office at 7:30, he saw Qi Hong sorting out the information in it. With some apology, he went over and handed over a cup of milk tea in his hand.

"This is what Xiaoxin asked you to do. She knows that you stayed up late last night and had a rest in the middle of the night. Now you are still up so early. This is her special milk tea, which she specially asked me to send. Here are some snacks you like too. Please eat them while they are hot, and I will deal with the rest."

Qi Hong hesitated for a second before reaching out for the milk tea Chen Qun handed over.

"Where's sister Xin?"

"Report to the old lady on the balcony. Come right over."

Chen Qun finished, put things on the table, went to his desk, turned on the computer, and began to input Qi Hong's materials into the computer.

He just turned over the first CT photo, and he was stunned.

"What is this? Is the MRI machine out of order? What's a bunch of disturbed patterns? It's not right to take metal to the machine

Qi Hong, who is holding the small point heart plug gracefully in the entrance, has some indistinct explanations.

"It's not that there's something wrong with the machine, it's that there's a metal object in the patient's brain. But the strangest thing is that no scar was found on the patient's head, so academician Jiang was a little uncertain. He thought that the MRI machine over there was broken, so he sent the patient to our operating laboratory for re examination, and the result was the same. Here are two images of brain surgery. You can compare them. The shape is almost the same. "

In the CT image of Chen Qun's brain, a small part of the right brain is covered by a dark shadow, which is the most common metal artifact.

Qi Hong swallowed the cake in his hand and spoke fluently.

"This patient needed emergency surgery, but because of the artifacts in several times of illumination and MRI, it was impossible to determine the brain condition, so academician Jiang changed his mind temporarily and gave the patient medical treatment. To leave the film here is to see if you have any way to eliminate this artifact and see clearly the real situation in the film. "

Chen Qun took a look at it and made a surprising conclusion.

"Do you see that the patient has no social security number or medical record, which indicates that most of them are overseas Chinese from abroad. Now they are 61 years old. There is a little skewness on the left face in the photo, which indicates that the right brain has undergone some operation and damaged the facial nerve conduction. If I guess, it's mostly the aneurysm clip left in the brain by cerebral aneurysm surgery! "

Because he has seen this situation thousands of times. When he operated on a simulated patient, he left at least dozens of aneurysm clips in the brain of the simulated patient and forgot to take them out. Without exception, the patient died directly on the operating table. Now when you see the pictures of this mode, you will naturally recall it.

"Mr. Chen ermos, we don't need your analysis. What we need is whether you can find a way to eliminate this artifact. At least I don't have a way. It's natural that the sky falls down and you're a tall man."

Qi Hong picked up a little heart and put it in his mouth, leaving the task to Chen Qun.

"Maybe I can use my simulation system to eliminate this artifact. Qi Hong, you are looking for the wrong person this time. You should look for me as a computer expert."

The eldest lady's mouth brimmed with a proud smile. She came in happily, and then came to have a look, and came up with a way with confidence.

Chen Qun deliberately hit the confidence of the young lady, raised his hand and made a gesture, "don't you think, even if the patient's head has metal, can't do MRI, then why don't you do an angiography, this can take some clearer photos, better than the cloud mountain fog cover!"

"I'm very sorry, the patient has a history of allergic reaction to contrast agent, and his family members have specially told him that he can't do contrast!"

"Chen Qun, I'm trying to make trouble for you. You must show them some color! You don't need to take pictures, you can do it! "

Fearing that the world would not be disorderly, the young lady picked up a small snack on the table, carefully tore off the oil paper below and swallowed it in her mouth.

Chen Qun knows that his girlfriend has a good chance of winning. He deliberately mocks him. It's impossible to leave her as a computer expert. However, the girlfriend is the day, always right, naturally to send flattery.

Just as he was about to open his mouth, Chen Qun saw a complete mark left on the oil paper that was falling over the garbage can. It seemed that there was a nerve in his mind that had been stirred. With a flash of inspiration, he immediately asked and answered himself like recitation.

"Nuclear magnetic resonance (MRI) is to make the most abundant hydrogen atoms in the body move in a given direction by magnetic field, then shoot down these hydrogen atoms by radio waves, and then digitize the rebound speed of hydrogen atoms. At this time, according to different tissues and pathological changes, the rebound speed will be different, and the contrast between various tissues will be formed, and the image will be generated.""The MRI we usually use is a high-intensity image for diagnosis. Just like Xiaoxin, the oil paper you used to wrap the snacks is put in advance when baking the snacks. The purpose is to prevent the contact between the snacks and the iron pot from being burnt, so as to play a barrier role and ensure that the snacks are burnt yellow rather than black. There is also a pad in MRI, that is, the background image which is usually regarded as garbage and discarded directly behind the high-intensity image, that is, the phase image for contrast! "

As Chen Qun said, he quickly searched for the files on the computer. In a flash, he exclaimed, "I found them. This is what I need."

Miss and Qi Hong gathered their heads together and saw a flower like image on the screen, which looked like concentric circles made up of many irregular curves.

"See, this is a simple image showing the phase difference in the body, so it's easier to grasp the distortion of the magnetic field caused by metal. See, the dot on the top right is where the metal is. It's not easy for us to see this image on weekdays because we can't use it at all. If we superimpose the inverse operation of this graph, we can restore the obscured part. Xiaoxin, this is up to you. I only know the method, but I don't know the specific operation. It's up to you. "

"Well, I'm a programming ape."

The eldest lady directly kicked Chen Qun away and sat down in Chen Qun's position without being polite. She didn't care about Chen Qun's flattery and sarcasm. Anyway, there was a more suitable method, which opened up her way of thinking.

However, the first lady still does not forget to attack Chen Qun.

"You can't do it without me!"

The first lady quickly knocked on the keyboard, reversed the data of the image, and rebuilt the structure. To her, it was just a few parameter setting problems, nothing remarkable. But for doctors like Chen Qun and Qi Hong, it's just a skill they can't master.

A small window full of numerical values immediately appeared on the screen. It was like building a building block or entering a password. After the correct numerical values were filled, the whole window turned red. With the little girl's touch, the black shadow of the next photo shrank to the middle, showing the general appearance.

The value of high-speed operation is almost ten seconds. In less than two minutes, after dozens of contraction, the dark image is completely eliminated, revealing a normal image. This picture is too clear and familiar for Qi Hong and Chen Qun. They can recognize it at a glance.

It's not a recurrence of the cerebral artery tumor, but a CT picture called "brain eating worm" by the world.