Xie Wanying was really "stupid" and stood in it all the time.
The teaching teacher ran away. He was busy with something and asked the students to study by themselves.
She stood at the door of the control room, watching the two radiologists operate the equipment.
This is the MRI room, and it took the longest time to take an MRI film, longer than CT and X-ray. A cervical spine MRI sometimes takes an hour to scan. Not to mention that patients are tired, but so are doctors.
While the equipment was working on its own, a female radiologist in her thirties went to get a thermos and poured water. Seeing her standing there alone, she was also curious: "Aren't you going outside to get some fresh air?"
"It's okay, teacher, I can stand up." Xie Wanying said.
For a student who is different from others, the female teacher told her: "You move a chair to sit on yourself."
The teacher is very nice, Xie Wanying moved a chair to sit, and continued to watch the instrument spinning. Before she was reborn, she was also an intern in the radiology department, and she found it very interesting. Now, she looks at the graphics on the computer monitor, trying to keep her mind running with the machine.
"Have you ever read a film?" the female teacher asked her.
"Try to read it." Xie Wanying said.
"Here's a picture for you, and you tell me which part it was taken from." The female teacher casually took a picture next to her and showed it to her.
Xie Wanying took the film and only glanced at it. It was obviously: "Cranial brain."
A few undergraduates outside the door noticed what the teacher was saying, and immediately walked in to join in the fun. Seeing the film in her hand, they said in unison: "This is all my brain."
Teacher, this question is easy.
"What else?" The female teacher smiled again, with an unpredictable expression on her face.
Several undergraduate students pondered the meaning of the teacher's words.
Xie Wanying answered directly: "This is a CT scan, not an MRI scan."
The teacher was taken aback for a moment, and looked at her with another look in his eyes.
A few undergraduates blinked: Isn't it MRI or CT? This is an MRI examination room, not a CT examination room. Why did the teacher take a CT scan
"Can you tell the difference between a CT scan and an MRI?" the teacher asked again.
X-ray films are definitely different from CT scans and MRI films, which can be seen at a glance. However, CT scans and MRI scans are very similar at first glance. If they are not marked, let alone laymen who have not studied radiology diagnostics seriously, they will not be able to tell the difference.
The teacher is asking you, which is equivalent to asking all the trainees today the test questions.
Almost a group of classmates were dumbfounded. They came to the radiology department on the first day of their internship today, and they only had one or two classes in class, and the class teacher only had time to give an overview.
Some students may review the homework in advance, but when they are not endorsed, they suddenly ask to answer specific questions of this kind of horizontal comparison. Students are confused because the book knowledge they have learned has not had time to connect with reality.
Many students looked at each other in blank dismay.
The teacher smiled when he saw it: "It seems that the teacher in the class didn't tell you. Can none of you answer it?"
If the teachers collectively underestimated them for the first time as an intern, it is estimated that the students in their two classes will become bad students in the word of mouth of the clinical teachers.
"Tell me." The teacher pointed to Xie Wanying, because she was the first to tell that it was not an NMR film.
"Both MRI and CT scans are cross-sectional images, which show the structural diagrams of various tissues by contrasting different shades of black to white. But the imaging principles are different. CT slices reflect the electron density and X-ray attenuation coefficient of tissues, while MRI and CT The distribution of hydrogen protons in tissues and organs is related. Adipose tissue is black on CT and white on MRI. Bone cortex is very white on CT but very black on MRI. If the teacher brings another MRI of the same part and CT Put the two together, and you can immediately see the difference."