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PET scan is a very expensive device, and the most traditional PET-CT machine costs about 30 million yuan for a single machine. As a large-scale equipment, in order to prevent local hospitals from swarming to purchase machines and cause waste, the relevant departments have adopted the method of "setting up plans and restricting audit purchases" for equipment of this level. If a local hospital wants to have its own PET scanner, it must first apply to the higher authorities through a fixed channel, determine the amount not to exceed the amount in the five-year plan, and then obtain approval before purchasing it.

At the dawn of PET scanning technology, a single PET was planned and managed as a Class A medical device on the same level as the proton therapy tumor system. After more than ten years of development, more than 710 ordinary X-ray positron emission tomography scanners, that is, PET-CT, have been equipped across the country. It has also been moved down to Category B management. At present, it is still planned in Class A to equip only 33 PET/MR (positron emission magnetic resonance imaging systems) in the country.

Compared with other imaging methods, the biggest feature of PET scan is that it can directly show the operation of various organs. By injecting a contrast agent such as 18F-FLT, which contains radioactivity, PET-CT scans can quickly detect abnormal tumor tissue that absorbs a large amount of thymine.

This makes PET scanning technology an absolute tool for human tumor screening. The extremely high sensitivity and less damage than biopsy have made it the core of high-end physical examination.

Unlike traditional rapid CT scans, PET scans are wasteful for large emergency centers like the Fourth Hospital, because the patient needs to be injected with contrast and wait for the contrast agent to enter the tissue. Cancer patients generally do not have an emergency, and most of them only have severe symptoms.

Therefore, Sun Lien has this question - after all, the current production of PET-CT and PET/MR is mainly monopolized by GE, Philips and Siemens. Japanese companies do not have relevant manufacturers, and Takeda Pharmaceutical's donation will probably not include this.

"We can't do it in the hospital. Zhou Ce spread his hands, "If you want to do it, only the affiliated hospital in the entire Ningyuan can do it." I remember that there was a PET/MR for experiments in Ningyuan Medical College, but that thing was ...... Anyway, it's okay to put a mouse or something in there, but you can't put a beagle. People definitely can't use it. ”

The First Affiliated Hospital of Ningyuan Medical College is the most comprehensive tertiary hospital in Ningyuan City. It's no surprise that they have equipment. Sun Lien nodded, and after making a note in his notebook, he shifted his focus back to the examination that the Fourth Academy could do now.

"From an extra-divine point of view, it is not realistic to create a fistula directly on the drainage. At least there is no suitable space elsewhere in the pathway. Xu Yourong timely raised the difficulties faced by neurosurgery on this issue. "Drainage tubes are generally off-the-shelf monolithic devices, and it is difficult to make holes in them for drainage. And even if you can open a hole, there is no place in the passage from the outside of the skull to the abdomen that would be suitable for a fistula to lead out – unless you have a fistula from a reservoir in the skull or from an intraperitoneal transfer outlet. ”

Lateral ventricular drainage is a secondary procedure that is not too difficult. But the core component of the key - the lateral ventricular drainage tube is a relatively sophisticated system. With this system, doctors are able to proactively select the intracranial pressure to start draining by selecting valves and reservoirs.

The reservoir is usually located near the neck of the body, and its main significance is to check the working condition of the entire drainage system by compression, and at the same time, it can also take into account the role of adjusting the shunt pressure.

However, the reservoir does not have a puncture function. In other words, conventional reservoirs do not have this function. To make it easier to cross the blood-cerebral barrier and to facilitate the extraction of cerebrospinal fluid for laboratory testing, some companies have introduced reservoirs with silicone domes instead of plain plastic shells. This newly designed reservoir can withstand repeated punctures at small angles with a fine needle and can even be used as a conduit for direct painless intrathecal injection through the cerebrospinal fluid barrier.

Here's the problem...... This silicone dome reservoir is not the mainstream, or standard, design for lateral ventricular drainage reservoirs. To use such a reservoir, the component with a silicone dome must be used at the time of implantation.

"This ......" Sun Lien heard that there was a little difficulty here, "Is it okay to change the reservoir?"

"It's not safe enough. It may affect the original drainage. Xu Yourong was very cautious about this proposal, "We didn't have the original drainage plan here, and it was risky to replace the reservoir hastily." I would rather consider adding an injection port to the peritoneum that can tolerate repeated punctures. ”

The nature of the injection port is similar to that of the silicone dome reservoir, but it is used more clinically in the four hospitals - as a mainstream development direction of deep vein injection of chemotherapy drugs, the injection port itself is not too expensive, and the technology is relatively mature.

"Then you have to ask for a consultation from the general public. After Sun Lien made another note, he looked left and right and saw that there seemed to be nothing else to add, so he decided to break the meeting, "Let's go, let's go and tell Yuan Ping'an to get up." ”

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When Dr. Yuan Ping'an woke up on his marching bed, the clock in his office had already pointed to 8:15.

He didn't have an alarm clock when he slept on the marching bed at four o'clock this morning. Yuan Ping'an was very sure that when his colleagues came to work in the morning, that sound was definitely enough to wake him up. But what he didn't expect was that it was already 8:15, and the whole office was empty—there was no one but himself.

It's a bit like coming to class early in the morning and waiting for class, only to find that there is no one but you. Yuan Ping'an even began to wonder if he was still dreaming for a few seconds - the work arrangement of the diagnostic center was still different from the school. At least there shouldn't be this kind of situation where "only I remember wrong, in fact, the whole school is on holiday today".

Yuan Ping'an sat up from the bed, cleaned up his marching bed, and poured himself two cups of black coffee. Then I looked out the window to see what was going on—fortunately, the four hospitals had not been closed off by the whole hospital, and there were already shadows of medical staff and patients walking outside.

That's ...... What happened to everyone else? Yuan Ping'an's brain began to gradually sober up under the effect of caffeine. He quickly turned on his mobile phone, and after browsing the work group in the courtyard, he ruled out the possibility of a large-scale public health incident.

Not related to emergency work...... He slammed towards the door, nervously pulling out his stethoscope as he ran briskly - at that moment, he really thought that something might be wrong with Tang Min.

Then, Yuan Ping'an, who ran out of the door, collided with Sun Lien and others. To be precise, he hit Dr. Bruun in the stomach. Then, Dr. Brunn shook slightly, and with a surprised expression, he picked up Yuan Ping'an, who was lying on the floor two meters away, "What's wrong?"

Yuan Ping'an saw his colleagues standing in the corridor talking and laughing, and his heart was lowered when he mentioned his throat. He rubbed his aching lower back, "I thought something was wrong...... Why didn't you even come into the office?"

"Leave some time for you to sleep. Sun Lien took out the record book from his body, showed the handwriting inside to Yuan Ping'an, and then said, "Let's go, go back and convey the spirit of the meeting to you." ”