You could have easily find these using a simple google search, however I will point several out:
* See figure 1 of this article for an ultrasound image of a trigger point. Really interesting!
* See figure 1 of this article for a schematic representation, and figure 2 for a real image. Although you did not ask for a deeper understanding of this topic, if you want to read more about it I would recommend reading this paper as it covers a lot of aspects (such as pain signals to the brain).
* This article00393-1/pdf) covers different imaging techniques and facilitates interpretation by using arrows to point out the trigger points.
If this is not what you are looking for **please specify** what you mean with "pictures"? (vibration sonoelastography, schematic, ultrasound, etc.) I cannot point you in a direction for real life images (if these even exist).