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Related Experiment Video

Updated: Nov 12, 2025

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
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Quantitative anatomy mimicking slice phantoms.

Karthik Gopalan1, Jonathan I Tamir1,2, Ana C Arias1

  • 1Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, USA.

Magnetic Resonance in Medicine
|March 19, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed a method to create realistic anatomy phantoms for quantitative magnetic resonance imaging. These phantoms accurately mimic T1 and T2 contrast, aiding in the validation of new imaging techniques.

Keywords:
3D printingdigital manufacturingphantomquantitative

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Area of Science:

  • Medical Imaging
  • Biophysics
  • Materials Science

Background:

  • Quantitative magnetic resonance imaging (qMRI) requires standardized tools for validation.
  • Existing phantoms may lack anatomical realism or precise control over relaxation properties.

Purpose of the Study:

  • To present a reproducible methodology for constructing anatomy-mimicking phantoms.
  • To achieve targeted T1 and T2 contrast for quantitative MRI applications.
  • To create a physical analog of the Brainweb digital phantom.

Main Methods:

  • Utilized gels with varying NiCl2 and MnCl2 concentrations to control T1 and T2 values.
  • Developed a calibration method for accurate targeting of relaxation pairs.
  • Employed 3D printing and extrusion techniques to fabricate slice phantoms on acrylic sheets.

Main Results:

  • Achieved targeted T1/T2 values with less than 10% error.
  • Generated anatomically realistic slice phantoms using data from the Brainweb digital phantom.
  • Demonstrated the reproducibility of the phantom fabrication process.

Conclusions:

  • The developed procedure enables the creation of anatomy-mimicking, multi-contrast phantoms.
  • These phantoms serve as valuable tools for evaluating and verifying model-based methods in qMRI.
  • Standardized phantoms are crucial for validating new MRI techniques across different platforms and sites.