Technology: The naughty kid ruined my college entrance examination, but I turned over to nuclear fus

As he himself said, even a junior high school student who only knows Baidu can say the same thing as long as he reads the content on Baidu.

Therefore, whether Lu Yu can make some really meaningful suggestions, it is not enough to look at these alone, and even Mao is not stained.

It is necessary to wait for him to say more meaningful knowledge and technology that is in line with reality, and perhaps he can judge whether this is a mental patient or a genius!

"Didn't I answer your question?"

Lu Yu smiled.

He didn't intend to say those words just now, but before Dr. Jiang said that he might not even know what an MRI was, so Lu Yu said such nonsense.

Now after "introducing" to Dr. Jiang and others what NMR technology is, Lu Yu did not talk nonsense anymore, but directly entered the topic: "

Although at this stage, NMR technology is already very perfect."

"Not to mention the technology contained in those first-line brands abroad, even our own domestic products themselves have been perfected in many points."

"But that doesn't mean we don't have room for improvement in the future, on the contrary, although we have generally achieved technical uniformity."

"However, many details also face some challenges and limitations!"

"Low signal-to-noise ratio, poor resolution, long scanning time, high cost.... These are all questions! "

Lu Yu is also no nonsense!

He directly said what problems there are in the current domestic MRI products

, and at this moment, the color of Dr. Lin and Dr. Jiang next to him also changed slightly at the same time.

"Oh?"

"It seems that you do understand something."

Old Doctor Jiang raised his eyebrows and glanced at Lu Yu with some surprise.

If you talk about the content just now, it is the exact information that can be found on Baidu.

So today's words of Lu Yu do involve some problems, or limitations, of today's nuclear magnetic resonance technology.

Low signal-to-noise ratio, poor resolution, long scanning time, high cost...

These problems all exist objectively.

Dr. Lin knew, and Dr. Jiang was even more clear.

Nowadays, it is difficult for domestic NMR equipment to gain an advantage in the competition with foreign first-class brand equipment in export, and it is also because of these differences in details, which makes it difficult for both sides to be favored by the gold owner in competition.

Not even on the exit.

Even at the level of the domestic demand market, the MRI instruments used in many hospitals are MRI devices from overseas first-line brands, and only a small number of second-class hospitals will be greedy for cheap and choose to use domestic MRI equipment.

After all, MRI equipment is a matter of human life, even if the price of domestic equipment is lower, but it is better to use equipment imported overseas!

In case there is any problem that can be found with overseas equipment, but cannot be found with domestic equipment, and the patient's family makes such a fuss, where can the hospital stand it?

Therefore, this question has always been the knot in the hearts of Dr. Lin and Dr. Jiang.

Although they all look forward to the development of domestic MRI devices, they still have to use those advanced instruments overseas for practical application to consider the patient's perspective, in a sense, this is also a helplessness.

Now hearing Lu Yu, they can actually say the problems of these domestic equipment one by one, and their eyes are naturally a little surprised.

Merely.

Being able to say a problem and being able to solve it are two different things.

After a moment of silence, Old Doctor Jiang frowned and said

, "If you can say this, it shows that you have some understanding of domestic MRI equipment, which is not bad."

"But there are not 100,000 or 50,000 people who can say the problem, and any talent in a related industry can be said word for word, and the current problems of domestic NMR brands can be clearly explained."

"With these alone, I am afraid that it will not be enough for your previous grand words."

"Unless..." There

was a gleam in his old eyes: "You can provide a solution to the problem!"

"That's kind of meaning!"

"You are right, it is not uncommon to ask questions, and I am not the only one who knows these problems, but I do have some ways to make up for these problems to a certain extent, depending on whether you and this Dr. Lin are willing to listen." Lu Yu smiled.

"We've all heard you say so much, of course we're willing to listen."

"Let's talk about it first." Dr. Lin said with a complicated expression.

On the one hand, he really hopes that Lu Yu can come up with some very constructive measures, but on the other hand, he naturally understands how difficult it is to come up with solutions to these problems!

If just grabbing a random person can solve these troubles, then domestic NMR device technology will not fall to this point by now.

"Ahem."

Lu Yu cleared his throat, but he was not in a hurry.

For him, the technology rewarded by the system, he definitely has full confidence, the only thing to worry about may be Dr. Lin, and this old doctor Jiang, whether he is willing to listen to his next speech.

Since they are willing and patient enough to listen, there is nothing to worry about.

"The first problem, the magnetic field problem."

"Our domestic NMR equipment, there is a big problem, that is, the magnetic field strength is blurred."

"And the solution to this trouble."

"It's simple."

A smile appeared on Lu Yu's face and said, "Since the strength of our magnetic field is easily blurred, the solution is to find a suitable magnetic field range!" "

Go on." Old Doctor Jiang said with a complicated look in his eyes.

The magnetic field strength is blurry, so the solution is to look for a suitable magnetic field range, which sounds like a nonsense.

Does he also feel that he has been tricked?

Lu Yu was also unhurried, and continued:

"Of course, choosing the right magnetic field strength is easy to say, but difficult to do."

"In general, the higher the magnetic field strength, the higher the signal-to-noise ratio and the higher the resolution, but it also brings more trouble, such as magnetic field uniformity, temperature stability, cost, etc."

"So we need to change our thinking."

"Nowadays, the idea of domestic nuclear magnetic resonance equipment is somewhat traditional, so if we want to solve this problem, we have to start from a fundamental level and change our thinking!"

This time, Lu Yu did not sell it again, but just moistened his throat and went straight down.

He was afraid that if he sold any more Guanzi, he would probably have to be stared to death by Old Doctor Jiang and Doctor Lin!

"Which idea is it exactly?"

"We can try to choose the right magnetic field strength according to different purposes and samples."

"For example, if we want to perform structural analysis on small molecules, we can choose machines with high field strength to get clearer spectra."

"And the reverse is also true, if we want to do dynamic studies of macromolecules, we can choose machines with low and medium field strengths to avoid too fast relaxation times."

Accompanied by the slow narration of Lu language.

Dr. Lin and Dr. Jiang Lao Li fell into the process of thinking at the same time.

Although the researcher sent by Director Lin next to him could not understand these words, he did not know anything about nuclear magnetic resonance technology.

But looking at the two people next to him who were in a state of deep thought at the same time, he could also guess that Lu Yu's words were probably ... Right to the point!

"This method coincides with my previous thinking."

"It seems that he does have his own ideas."

"However, if the appropriate magnetic field strength is simply changed according to different purposes and samples.... The requirements for scanning parameters may be further increased.

"And the scanning parameters themselves are one of the weaknesses of domestic NMR instruments, and it is so difficult to pull up the strength of this weak point."

"Did he ignore the problem of scan parameters, or... I already have a countermeasure in mind. Old

Doctor Jiang subconsciously lifted his reading glasses and began to think in his heart.

If the person who said such a thing to himself was a student of a medical boss, or the medical boss himself, or Dr. Lin next to him.

Then Old Doctor Jiang will definitely think that the other party has found a specific solution by saying so.

But the problem is... The person who told him this was a "patient" who came to the medical examination center for a medical examination?

That... Dr. Jiang believes that the answer is probably the former.

Although this guy has some understanding of the current problems of domestic nuclear magnetic resonance equipment, he still understands a little shallow, or in other words, has his own thinking, but not much.

At this thought, he couldn't help but feel a hint of disappointment in his heart.

It is indeed a little ridiculous to put the hope of improving domestic NMR device technology on a patient.

After pondering for a moment, Dr. Jiang slowly spoke:

"The idea you proposed is very similar to an idea I had a few years ago, but you overlooked one important point, that is, the scanning parameters of MRI instruments."

"Don't take that into account."

"Just trying to choose the right magnetic field according to different molecules, the strength is probably not so simple. You do have some ideas, but if there is no way to solve the problem of scan parameters, that's all.

He waved his hand, just about to end today's conversation.

But at this moment, Lu Yu spoke again:

"Doctor Jiang, you may have misunderstood me. Choosing the right magnetic field strength based on different molecular structures is my idea, yes, but it's really just the first step I envision.

"The scanning parameter problem you mentioned is indeed a follow-up trouble that this idea may cause."

"In order to overcome these troubles and improve the accuracy and effect of the NMR machine, I think that further improvements can be made!"

"That is, directly increase the scanning parameters!"

"Increase scan parameters? What you said is very relaxed, what do you take to improve, do you raise by mouth? Doctor Jiang said unceremoniously: "Do you know how difficult it is to improve the scanning parameters?"

"After all these years, how many people have gone to great lengths to improve their scanning parameters?"

"If improving domestic NMR equipment is really as simple as you say, then the performance has long been raised, why wait until today?"

It is obvious that Dr. Jiang is not optimistic at all about what Lu Yu can really propose to improve the scanning parameters of MRI instruments.

The reason couldn't be simpler.

A few years ago, when he himself considered the problem of magnetic field strength, he thought about improving the scanning parameters.

However, to this day, these reflections still have not found a suitable direction.

Even he, a veteran who has been operating in the industry for several years, could not find a proper way, let alone pin his hopes on a young man who was "full of nonsense"!

"Young people should think less and more, don't always be ambitious, and be down-to-earth!" He was about to criticize Lu Yu without mercy.

But at this time, Lu Yu once again spoke with bright eyes and a confident expression:

"You think I have no way to solve the problem of scanning parameters, I also understand your thoughts, freezing three feet, not a day's cold, the problem that has plagued us for so long, it is obviously unrealistic to quickly solve it in a short time."

"But that doesn't mean the problem, there really is no way to solve it."

"Look..."

he walked slowly to the side of the MRI device, pointed to the device and continued: "Optimizing the scanning parameters, this statement is a bit too general.

"Specifically, sweep parameters include the number of excitations, spatial resolution, echo time, copy time, phase encoding step size and many factors that affect scan time, signal-to-noise ratio, and image contrast."

"So, if you want to optimize the scanning parameters, you must find the target and hit the knife quickly!

"In general, you have to adjust the scanning parameters to achieve the best balance!"

"If we want to improve the signal-to-noise ratio, we can increase the number of excitations or extend the replication time, assuming we want to improve the spatial resolution, we can reduce the phase coding step and increase the frequency coding step

at the same time..." With Lu Yu's long series of speeches from shallow to deep,

the expressions of Dr. Lin and Dr. Jiang Lao became a little unsettled at the same time.

"Goo."

Dr. Lin couldn't help but swallow a mouthful of spit, and began to think carefully about these theories in his mind.

If you consider these words only from a theoretical point of view.... It seems that there is no problem, right? Although it is unknown whether it can be implemented specifically, at least there is no hard wound in logic.

It's not the kind of idea that you can see at a glance, it's pure nonsense.

"What do you think, teacher?"

Dr. Lin subconsciously set his sights on his teacher, Dr. Jiang.

“...."