Big Doctor Live Room

Chapter 947 Reversed Phase Image
When Chen Qun came to his team's office at 07:30, he saw Qi Hong was sorting out the materials in there, walked over apologetically, and handed over a cup of milk tea in his hand.

"This is what Xiaoxin invited you to do. She knew that you worked overtime and stayed up late last night. You didn't rest until midnight and you still got up so early. This is her special milk tea. I specially asked it to be delivered here. There are also There are a few snacks that you like, so just eat them while they are hot, and I will take care of the rest."

Qi Hong hesitated for a second before reaching out to take the milk tea from Chen Qun.

"Where's Miss Xin?"

"Report the situation to the old lady on the balcony, and come here immediately."

After Chen Qun finished speaking, he put the things on the table, walked to his desk, turned on the computer, and began to input the materials at Qi Hong's hand into the computer.

He just flipped through the first CT photo, and couldn't help being stunned.

"What is this? The MRI machine program is broken? Why is there a large group of disturbed patterns? Did you bring metal to the machine? This is not right!"

Qi Hong, who was gracefully stuffing a small snack into her mouth, explained with some lisp.

"This is not a problem with the machine. It should be that there is a metal object in the patient's brain. But the strangest thing is that no scars were found on the patient's head, so Academician Jiang was a little uncertain, thinking that the MRI machine over there was broken After that, the patient was sent to our operation laboratory for re-examination, and the result was the same. Below are two images of brain surgery examinations. If you compare them, the shapes are almost the same.”

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

Qi Hong swallowed the cake in her hand and became fluent in speech.

"This patient needs emergency surgery, but because artifacts appeared in several exposures and MRIs, and the brain condition could not be determined, Academician Jiang temporarily changed his mind and gave the patient medical treatment. The purpose of leaving the film here is to See if you have a way to eliminate this artifact and see the real situation in the film clearly."

Chen Qun looked at it twice, and directly came to an astonishing conclusion.

"Did you see that the patient has no social security number and no medical records, which means that most of them are overseas Chinese. He is 61 years old now. The left side of the face in the photo is slightly skewed and abnormal, which means that the right side of the brain has undergone some kind of surgery. , damaged the nerve conduction in the face. If I guess, it is probably the aneurysm clip left in the brain during the brain aneurysm operation!"

Because, he has seen this situation thousands of times. When he operated on the simulated patient, he left at least dozens of aneurysm clips in the brain of the simulated patient and forgot to take them out. Died directly on the operating table.Now that I see photos of this model, I can recall them naturally.

"Mr. Chen Holmes, we don't need your analysis. What we need is whether you can find a way to eliminate this artifact. At least I can't help it. Naturally, the sky fell and you, a tall man, supported it."

Qi Hong picked up another small snack and stuffed it into her mouth, and directly gave the task to Chen Qun.

"Perhaps I can use my simulation system to eliminate this artifact. Qi Hong, you have found the wrong person this time. You should find me, a computer expert, who is the most suitable."

With a smug smile on the corner of the young lady's mouth, she walked in happily, and only after she leaned over to take a look, she came up with a solution full of confidence.

Chen Qun deliberately undermined the eldest lady's self-confidence and raised his hand to make a gesture, "Haven't you ever thought about it, even if the patient's head has metal and cannot be subjected to MRI, then why not do an angiography examination, which can be photographed Some clearer photos are better than those covered in clouds and mountains!”

"I'm very sorry, the patient has a history of allergy to the contrast medium, and the family members have specifically told me not to do contrast imaging!"

"Chen Qun, fight back. This is deliberately causing 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 chaotic, the eldest lady picked up a small snack on the table, carefully tore off the oil paper underneath, and swallowed it in her mouth.

Chen Qun knew that his girlfriend had a good chance of winning, so he deliberately mocked him, without her as a computer expert, it would be impossible.But, girlfriends are gods, they are always right, so naturally they will be flattered.

The moment he was about to speak, Chen Qun saw a complete imprint left on the oiled paper floating above the trash can. It seemed that some nerve was triggered in his mind, and the light flashed, and it was like reciting Ask and answer for yourself.

"NMR relies on a magnetic field to move the most abundant hydrogen atoms in the body in a predetermined direction, then uses radio waves to knock down these hydrogen atoms, and then digitizes the speed at which the hydrogen atoms rebound. At this time, depending on the tissue and the lesions caused Different, the speed of rebound will be different, and the contrast between each tissue will be formed, resulting in an image."

"The MRI images we usually use are high-intensity images for diagnosis. Like the oiled paper that you packaged the dim sum with Xiaoxin, the oiled paper is also put in beforehand when the dim sum is baked. The iron pan was burnt in contact with it, and it acts as a barrier to ensure that the dim sum is browned instead of blackened. There is also a paper pad in the MRI, which is used behind the high-intensity image as a background image that is usually regarded as garbage and discarded directly. That is, the phase image for comparison!"

As Chen Qun said, he quickly searched for the files on the computer, and then exclaimed in a blink of an eye, "I found it, this is what I need."

The eldest lady and Qi Hong leaned their heads together, and saw a flower-like image appeared on the screen, which looked like concentric circles composed of multiple irregular curves.

"See, this is a simple image showing the phase difference emitted in the body, so it is easier to understand the distortion of the magnetic field caused by the metal. See, the dot on the upper right is the position of the metal. It is not easy for us to see it on weekdays I saw this image because I don’t need it at all. If we inversely superimpose this image, we can restore the covered part. Xiaoxin, it’s up to you to do this. I only know the method, not the specific operation , it's up to you."

"Hmph, it's obvious that I'm a programmer."

The eldest lady kicked Chen Qun away, and sat in Chen Qun's seat unceremoniously. She didn't care about Chen Qun's flattery and sarcasm. Anyway, there was such a more applicable method, which opened up her mind.

However, the eldest miss still did not forget to hit Chen Qun.

"You just can't do without me!"

The eldest lady tapped the keyboard a few times quickly, reversed the data of the image, and rebuilt the structure. To her, it was simply a matter of setting a few parameters, and there was nothing remarkable about it.But for doctors like Chen Qun and Qi Hong, it was simply a bible, a skill that could not be mastered.

Immediately a small window full of values ​​appeared on the screen, and it jumped up quickly, like building blocks or entering a password. After each correct value was filled in, the whole window turned red. Lighten it a little, and the black shadow part of the photo next to it will shrink to the middle, showing a general appearance.

The value of the high-speed calculation is almost a ten-second pause, and in less than 2 minutes, after dozens of times of contraction, the dark image is completely eliminated at once, revealing a normal image.This photo was so clear and familiar to Qi Hong and Chen Qun that they recognized it immediately.

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

(End of this chapter)