Before I go into the details, I had a few students in my office recently.

They were a little bit serious about, you know, the medical engineering studies in Erlangen

and how we set things up.

Maybe I'll say it in German.

There were some students who were a little worried about what they could do after the studies.

And I have to reassure them that they won't get nervous after two weeks.

We already know what we're doing.

I've been doing medical engineering for ten years now.

We work a lot with the medical engineering industry and I think we have a very good understanding

of what engineers expect in this environment.

And we have set up the curriculum accordingly.

There are criticisms, and it's clear that if you have 180 students, there are always some who aren't so satisfied.

Regarding the program itself, what the students didn't know,

in the winter semester I read the medical engineering 1, it's all about the picture in the middle.

And after Christmas we'll talk about replacement systems, for example how a hearing aid works,

or an artificial kidney.

And in the summer semester my colleague from the chemical sciences will read the medical engineering 2,

where it's all about biomaterials.

So they get a very compact overview.

You also have to know, when you talk to different people,

most of them don't know the curriculum, but they allow themselves a judgment about the whole thing.

You shouldn't listen to the whole talk.

I think we offer a course that qualifies you as an engineer after three years.

So don't get nervous, but keep going.

There are ups and downs, as always in life.

The tasks are too hard, too easy.

The tasks have no reference to the lecture.

The tasks only repeat what we did in the lecture.

There's always something to complain about.

Believe us, we try our best.

Okay, good.

So let's summarize where we are and what the big picture is and what the storyline is.

So here we are talking about medical engineering, medizintechnik, medical and health engineering.

And what did we do so far?

First of all, we started out a little bit, and that was a very, very, very short introduction to signals.

And we looked at 1D signals, 2D signals, and 3D signals and its representation.

In the computer with a stream of digits, with an array, two-dimensional array of digits, with a three-dimensional array of digits.

And we also have seen that in psychopsychology, we discuss signals like the ECG, like EEG, EMG, and many more.

So we have seen possibilities how to acquire one-dimensional signals.

And last week, we started out to talk about imaging modalities.

If somebody is focusing his work on medical engineering, you have to have some knowledge about the imaging modalities that are used.

Because most of the research that is going on in this field is focusing on image processing and image acquisition and imaging.

So this is something where you should at least have a broad overview.

And that's what we want to provide until Christmas.

And we have discussed a big overview where we have seen different image types.

For instance, I have shown to you how X-ray images look like.

I have shown to you how CT images look like.

We talked about OCT images.

I explained to you what SPECT and PET basically means.

We will learn this in more detail.