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Linda Knutsson

Professor

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Development of a Hybrid Nanoprobe for Triple-Modality MR/SPECT/Optical Fluorescence Imaging

Författare

  • Renata Madru
  • Pontus Svenmarker
  • Christian Ingvar
  • Freddy Ståhlberg
  • Stefan Andersson-Engels
  • Linda Knutsson
  • Sven-Erik Strand

Summary, in English

Hybrid clinical imaging is an emerging technology, which improves disease diagnosis by combining already existing technologies. With the combination of high-resolution morphological imaging, i.e., MRI/CT, and high-sensitive molecular detection offered by SPECT/PET/Optical, physicians can detect disease progression at an early stage and design patient-specific treatments. To fully exploit the possibilities of hybrid imaging a hybrid probe compatible with each imaging technology is required. Here, we present a hybrid nanoprobe for triple modality MR/SPECT/Fluorescence imaging. Our imaging agent is comprised of superparamagnetic iron oxide nanoparticles (SPIONs), labeled with 99mTc and an Alexa fluorophore (AF), together forming 99mTc-AF-SPIONs. The agent was stable in human serum, and, after subcutaneous injection in the hind paw of Wistar rats, showed to be highly specific by accumulating in the sentinel lymph node. All three modalities clearly visualized the imaging agent. Our results show that a single imaging agent can be used for hybrid imaging. The use of a single hybrid contrast agent permits simultaneous hybrid imaging and, more conventionally, allow for single modality imaging at different time points. For example, a hybrid contrast agent enables pre-operative planning, intra-operative guidance, and post-operative evaluation with the same contrast agent.
Keywords: SPION, SPECT, optical, fluorescence imaging, magnetic resonance imaging, MR, SLN

Avdelning/ar

  • Medicinsk strålningsfysik, Lund
  • Atomfysik
  • Diagnostisk radiologi, Lund
  • Lund University Bioimaging Center
  • MR Physics

Publiceringsår

2014-03-10

Språk

Engelska

Sidor

13-26

Publikation/Tidskrift/Serie

Diagnostics

Volym

4

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

MDPI AG

Ämne

  • Radiology, Nuclear Medicine and Medical Imaging

Status

Published

Forskningsgrupp

  • MR Physics

ISBN/ISSN/Övrigt

  • ISSN: 2075-4418