Reading a CT Brain

"Why this patient is still here? We suppose to discharge him today right?" the surgeon asked.

"Neurosurgeon from HSB said the CT brain shows evidence that the bleeding is worsening, so they wanted to keep him for another 5 days and repeat another ct brain."

"Show me the latest ct film," my surgeon asked.

I always felt that even thought he is a surgeon in traumatic ward, his knowledge of reading radiological film is far more better than anyone in the hospital.

"Look at the film, can you tell me the volume of the bleeding in his brain?" he questioned.

I was in a mourning silence for a moment.

"Do you know how to calculate the volume?" he added another question. 

"I have an idea," I answered. 

"How many slices are the in the old film?" 

"6 in a row," I said. 

"The latest one?" 

"5," I said after observing the film which I didn't do previously. 

"If we magnify the image, do you think the size might visually appears big even though it's the same?" the surgeon asked. 

It make sense I thought and nodded. 

I continued, "I asked the neurosurgeon but he said, if you don't know how to read, go to the radiology department and ask them." 

"See, this is how they teach," the surgeon sighed to my ward Mo.

"So what you felt?" he continued. 

I looked at him for a moment.

"Like.. I'm... stupid," I whispered. 

He smiled. 

"See, how I see the film and how he saw it seems totally different right, even though it's the same film.Our perspection about ourselves is the kinda same. How you felt about you self might be wrong.Change it."