This is exactly the point that Dr. Xu is testing in young doctors.
"Heart." Doctor Zhao, who was about to perform the operation, replied, "The clinical doctor's application report suggested that the patient's heart may have a problem and needs to be investigated."
Dr. Xu seemed not very satisfied with his rough answer, thinking that perhaps the summary of the patient's condition written by the clinician was too simple, which made the young doctor unable to make a careful judgment, so he picked up the application report on the table and read it again. After reading for a while, he thought that the person standing next to him was the patient's family member, so he simply asked Xie: "Do you know about his condition?"
Knowing what the teacher wanted to ask, Xie Wanying replied: "Using CT to perform heart examinations has its own flaws and is relatively difficult."
The other party's answer was life gate. Doctor Xu turned around and winked at her, smiling and said, "How many years have you studied with your teacher Qin?"
Xie Wanying was ashamed. It seemed that she had only talked to Teacher Qin once, and this time she was definitely taking advantage of Teacher Qin.
Seeing that her silence was strange, Dr. Xu asked curiously, "Aren't you a student of imaging?"
No. Xie Wanying shook her head honestly.
Doctor Zhao, who was sitting in the front, turned around and thought that Xie Wanying's answer just now was exactly like that of a radiology student. What was going on?
...
...
"I'm a surgical student." Xie Wanying replied.
"Do surgical students understand what CT scans of the heart can reveal?" Dr. Xu asked her again.
"CT scans the heart, just like other tissues and organs, can be done according to the basic principles. The problem is that CT scans must face a difficulty in finding the lesions in the heart. The heart is an organ in the human body that contracts and relaxes at an autonomous rhythm. In other words, it is in motion all the time. For imaging tests, it is best if the target object is still. Therefore, we require patients to remain still and quiet during the examination, and to adjust their breathing to allow the lungs to expand and contract, etc. according to the doctor's requirements. However, the patient and the doctor cannot control how the heart moves," said Xie Wanying.
Doctor Zhao pursed his lips: Is she really not a student of imaging?
"Yeah." Hearing the depth of her words, Dr. Xu encouraged her to continue expressing her opinions, "Tell me more."
Xie Wanying continued to express her opinion: "CT and X-ray can be compared to cameras. If you want to capture the dynamic and subtle changes of the heart at all times, the shutter speed of this camera needs to be fast, as fast as possible. Therefore, CT has no advantage in cardiovascular disease. The advantage is the angiography machine. The angiography machine in the interventional operating room can capture 30 frames per second, with a time resolution of 33 milliseconds, and the resulting cardiovascular images are sharp and clear. The shutter speed of single-source CT is less than a quarter of that of the angiography machine. The latter is definitely slower in capturing dynamic images than the former, and is destined to have a higher probability of missing problems. Therefore, there is a saying in clinical practice that coronary angiography is the gold standard for diagnosing coronary heart disease."
"She remembers the numbers very well." Dr. Zhao exclaimed, gripping the back of his chair.
Doctor Xu slapped his student on the head and said: Why don’t you think about yourself when you praise others?
Doctor Zhao touched his head which was hit by the teacher and smiled, not caring. In medicine, we need to learn from each other, and there must be a teacher among three people.
"Single-source CT is relatively slow, and dual-source CT will be much better." Doctor Xu concluded, fully agreeing with what Xie Wanying had just said.
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