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In this video, we're gonna talk about

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how we acquire the imaging

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and what are some aspects of quality control

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that are important before placing the patient under the

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camera, we're gonna interview the patient

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and ask several questions.

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And this will be important depending on each tracer.

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So it will always start with an interview.

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For FDG in particular, we're gonna check the glucose levels.

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We'll go through the specific preparation

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for this tracer later on.

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But I wanted to lay out how a PET CT

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scan is done from the beginning to the end.

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So when patient comes

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and we interview the patient, we check the glucose

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and if everything is okay, we will inject the tracer

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and then we'll have to wait.

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And depending on the different tracers,

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we'll wait more or less.

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And I have detailed the timings here below.

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Some are not as specific and it can be done within a range.

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For example, PSMA, some places do 60 minutes,

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some places do 110 minutes

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and these won't change, won't affect too much the,

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the quality of the images based on, on preference

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after the injection and the specific time that we have

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to wait, we'll scan

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and we're gonna start with the CT portion,

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and then we'll move on to the pet.

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So we acquire the CT and it takes one

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or two minutes to go through the entire body.

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And then we will start the acquisition of pet.

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The ring of the PET scanner

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will cover between 15 and 20 centimeters at a time,

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and every time, uh, the table will move on.

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So we end up scanning the entire body

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and there will be a little bit of overlap to make sure

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that we don't lose information between the rings

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and each ring and each field of view will be called

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bed position.

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A bed position will cover 15 to 20 centimeters,

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but this is the, uh, appearance of the road data.

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And then after that, the

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software will correct the pit imaging that we have acquired

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based on the attenuation map of the C

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and will provide us with

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what is called an attenuation corrected PET imaging.

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Later on, we confuse these images to, uh, review the case,

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most importantly for an anatomical correlation.

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The other thing that the system provides, it's

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what is called maximum intensity projection,

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which I'm showing here.

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It needs a volume rendering of the PET imaging.

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And this is a really nice

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Way to look at the distribution of the tracer,

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and, uh, it gives you a very good understanding of,

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of the disease or of the process.

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In just one glance, this is the common way

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to look at the pet.

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And obviously based on preference,

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you can change the display.

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But in general, uh, PET viewers will always show you

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the pet, only the ct, and then the fsed images.

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You can review your case in axial

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and then you can change them to sad or coronal

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and they should be, uh, linked.

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So you can localize the area of

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abnormality in all the scanners at the same time.

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And vice versa, from the MIP into the other imaging tiles,

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I.