947: C947 Reversed Phase Image

C947 Reversed Phase Image

When Chen Qun arrived at his team's office at 7: 30, he saw Chi Hong tidying up the documents. He walked over apologetically and handed a cup of milk tea to her.

Xin invited you over. She knew that you were working overtime last night and had just rested in the middle of the night, and now that you're up so early, this is her special milk tea, specially sent by me. There are still a few snacks here, which you like.

Chi Hong hesitated for a second before she took the milk tea from Chen Qun.

"Where's Ms Xin?"

"Report to the old lady from the balcony. Come over immediately."

After Chen Qun said that, he put the stuff on the table and walked to his desk. He turned on the computer and started to input the material beside Chi Hong's hand into the computer.

As soon as he flipped through the first CT photo, he was stunned.

"What is this? The nuclear magnetic resonance machine is out of order? Why was there a large interference pattern? Did they bring the metal onto the machine? That's not right! "

Chi Hong, who was gracefully stuffing snacks into her mouth, started to explain indistinctly.

"It's not a problem with the machine. It's something metallic in the patient's brain. However, the strangest thing was that we didn't find any scars on the patient's head, so Fellow Jiang was a bit unsure. He thought that the MRI machine over there had broken down, so he sent the patient to our surgical lab for a re-examination. There are two images of brain surgery, and if you compare them, they're almost identical. "

On the CT image of Chen Qun's brain, a small portion of the right side of the brain was covered by a black shadow, which was the most common metal artifact.

Chi Hong swallowed the cake in her hand and her words became fluent.

"This patient needs emergency surgery, but due to several times of illumination and nuclear magnetic resonance imaging, he couldn't determine the condition of his brain, so Fellow Jiang temporarily changed his mind and started treating the patient with drugs. The reason why I left the film here is to see if you guys have any way to remove this artifact and see the real situation in the film. "

Chen Qun looked at it for a while and gave a shocking conclusion.

"Did you see, the patient does not have a social security number, nor any Medical History Sheet? This means that he is most likely an alien from overseas, and his age is now 61. The left side of his face in the photo is a bit crooked, which means that the right side of his brain has undergone some kind of operation, which damaged the nerve conduction in his face. If I'm guessing, it's probably the aneurysm clip left in the brain by the aneurysm surgery! "

Because he had seen this situation thousands of times, when he operated on the simulated patient, he had left dozens of aneurysm clips in the simulated patient's brain and without exception had the patient die on the operating table. Now that he saw the photo of this model, he naturally recalled it.

"Mister Chen Lemos, we don't need your analysis. What we need is whether or not you can think of a way to eliminate this artifact. At the very least, I don't have any other options."

Chi Hong took another snack and stuffed it into her mouth, directly giving the task to Chen Qun.

"Maybe I can use my simulation system to eliminate this fake image. Chi Hong, you found the wrong person this time. You should find a computer expert like me instead."

The corner of Eldest Miss's mouth overflowed with a proud smile as she excitedly walked in. After taking a glance, she confidently came up with a solution.

Chen Qun deliberately hit the young miss's confidence, raised his hand and made a gesture, "Haven't you thought, even if there's a metal in the patient's head and they can't do nuclear magnetic resonance imaging, why not do an angiography? This can take some clearer photos, it's better than having a fog cover!"

"I'm very sorry, but the patient has a history of allergic reactions to contrast media. The family member specifically warned me not to take any radiography!"

"Chen Qun, we're going over now. We purposely came to cause trouble for you, so you have to show them some colors!" You don't even need to take pictures to finish it! "

The eldest miss was eager for the world to be peaceful, so she picked up a small piece of dessert from the table, carefully tore off the oily paper beneath it and swallowed it in one gulp.

Chen Qun knew that his girlfriend had a chance of winning, so he intentionally teased her. Leaving her, a computer expert, was impossible. However, a girlfriend was always right. They naturally had to fawn on her.

The moment he was about to open his mouth, Chen Qun saw a complete mark on the oil paper that was floating above the trash can. Something seemed to stir Chen Qun's mind and he immediately answered his own question as if he was reciting.

"The magnetic field is used to move most of the hydrogen atoms in the body in the designated direction, and then the waves are used to shoot them down, and then the speed of the rebound is calculated. At that time, depending on the difference between the tissues and the pathological changes, the rebound speed is different, so the contrast between the tissues is formed, and the image is generated."

"Our usual nuclear magnetic resonance image is a high intensity one for diagnosis. Just like the piece of oil paper you used to wrap dim sum, the oil paper was placed in front of the pastries before they were baked. The purpose of the oil paper was to prevent the pastries from touching the metal pot and to make sure that the pastries were brown instead of black. There is also a pad in the NMR. It is the background image that is usually used behind high-intensity images and discarded as trash. It is also the phase image used for comparison! "

As Chen Qun said this, he quickly searched for the documents on his computer. In the blink of an eye, he exclaimed, "I found it! This is what I need."

The young miss and Chi Hong put their heads together and saw a flower-like image appear on the screen. It looked like a concentric circle formed by many irregular curves.

"See that? This is a simple image that shows the phase difference in your body, so it's easier to understand the distortion caused by metal. Do you see that? The dot on the upper right was the location of the metal. Normally we don't see this image easily because it's not available at all. If we add the inverse of this graph together, we can restore the obscured part. "Xin, now you have to do it. I only know the method and I don't know the specifics. It's up to you."1

"Humph, he clearly said that I'm the Program Ape."

Eldest Miss directly kicked Chen Qun away and sat on Chen Qun's seat without any hesitation. She did not mind Chen Qun's flattery and ridicule. Anyway, there was a more suitable way to open up her mind.

However, Eldest Miss still didn't forget to hit Chen Qun.

"You can't do it without me!"

The young miss quickly typed a few keystrokes, reversing the data on the image and reconstructing it. To her, it was simply a matter of several parameters being set up, it was nothing special. However, to doctors like Chen Qun and Chi Hong, it was simply a heavenly book that they could not master.

A small window that was filled with numbers immediately appeared on the screen, it jumped up and down quickly, just like building blocks or entering a password. After the correct numbers were filled up, the entire window turned red, and with a tap of the young miss's finger, the black shadow of the photo next to it shrunk to the center, revealing its approximate appearance.

The high-speed calculation stopped at almost 10 seconds. In less than 2 minutes, after dozens of contractions, the dark image was completely eliminated, revealing a normal image. To Chi Hong and Chen Qun, this photo was too clear and familiar. They immediately recognized it.

Not a recurrence of a brain artery tumor, but a CT image of what the world calls a "brain worm."

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