# 3D printing of Tungsten Radial Collimator

> **NIH NIH R43** · POLARONYX, INC. · 2020 · $190,124

## Abstract

3D printing of Tungsten Radial Collimator
PolarOnyx Inc. proposes for the first time, based on our patented technology, an
innovative approach to make tapered Tungsten radial collimator (W-Collimator)
using fs fiber laser additive manufacturing, to provide high quality image for
nuclear medicine. This provides unprecedented advantages over traditional
methods in terms of sensitivity, cost, and effectiveness of prevention. The fs fiber
laser delivers high peak intensity and power to melt the Tungsten powder and
form the shape and strength required to diffract radiation. This technology
combining with material processing capability provides a powerful tool for precise
and timely manufacturing of Tungsten collimator with any complexity. In the
Phase I, a proof of concept experiment to make Tungsten collimators with
different shapes will be demonstrated and test on radiation imaging. In Phase II,
we will further develop into a product exceeding the current sensitivity of
SPECT/CBCT at least 1000x.
APPLYING FOR
NATIONAL INSTITUTE OF BIOMEDICAL IMAGING AND BIOENGINEERING (NIBIB)
N. Nuclear Medicine

## Key facts

- **NIH application ID:** 10004837
- **Project number:** 1R43GM137629-01
- **Recipient organization:** POLARONYX, INC.
- **Principal Investigator:** Jian Liu
- **Activity code:** R43 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2020
- **Award amount:** $190,124
- **Award type:** 1
- **Project period:** 2020-09-01 → 2021-08-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10004837

## Citation

> US National Institutes of Health, RePORTER application 10004837, 3D printing of Tungsten Radial Collimator (1R43GM137629-01). Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/grant/nih/10004837. Licensed CC0.

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