---
title: View of Field | Alberto Ruiz
description: QUEL Imaging's observations of challenges with in vivo fluorescence imaging. How can phantoms and reference targets be used to advance the field?
---

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# View of Field

### Reflections on the field of *in vivo* fluorescence imaging

[![QUEL Imaging's logo 3D printed in tissue mimicking and clear resin matricies using the Q-X phantom platform. ](https://blog.quelimaging.com/hubfs/undefined-Aug-27-2026-08-07-16-3047-PM.png)](https://blog.quelimaging.com/if-blood-is-red-why-are-veins-blue)

[concepts](https://blog.quelimaging.com/tag/concepts)

### [If blood is red, why are veins blue?](https://blog.quelimaging.com/if-blood-is-red-why-are-veins-blue)

![Picture of Alberto Ruiz](https://blog.quelimaging.com/hs-fs/hubfs/Alberto2.jpg?width=50&name=Alberto2.jpg) [Alberto Ruiz](https://blog.quelimaging.com/author/alberto-ruiz)

Look at the back of your hand. Beneath the surface, faint lines trace their way toward your wrist:...

[Read more](https://blog.quelimaging.com/if-blood-is-red-why-are-veins-blue)

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