---
title: View of Field | featured
description: featured | 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)

[![Diagram of photon paths in tissue model](https://blog.quelimaging.com/hubfs/Screenshot%202025-11-14%20at%2010.59.00%20AM.png)](https://blog.quelimaging.com/monte-carlo-overview)

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

### [Photon Transport Simulations with Monte Carlo: A Practical Guide for Medical Device Designers](https://blog.quelimaging.com/monte-carlo-overview)

![Picture of The QUEL Team](https://blog.quelimaging.com/hs-fs/hubfs/QUEL_Q.png?width=50&name=QUEL_Q.png) [The QUEL Team](https://blog.quelimaging.com/author/quel)

Designing an optical sensor for medical devices often feels like educated guesswork. You know your...

[Read more](https://blog.quelimaging.com/monte-carlo-overview)

[![](https://blog.quelimaging.com/hubfs/undefined-Oct-20-2025-07-18-36-4894-PM.png)](https://blog.quelimaging.com/introducing-optiblox)

[optical properties](https://blog.quelimaging.com/tag/optical-properties)

### [Introducing OptiBlox® - the latest in optical tissue phantom technology](https://blog.quelimaging.com/introducing-optiblox)

![Picture of The QUEL Team](https://blog.quelimaging.com/hs-fs/hubfs/QUEL_Q.png?width=50&name=QUEL_Q.png) [The QUEL Team](https://blog.quelimaging.com/author/quel)

Across optical sensing applications—from medical-grade pulse oximetry and surgical imaging to...

[Read more](https://blog.quelimaging.com/introducing-optiblox)

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QUEL Imaging aims to build an ecosystem to accelerate and standardize methods for clinical translation of in vivo optical imaging technologies.

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