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Table 1 Imaging modalities general characteristics

From: Role of medical and molecular imaging in COPD

Modality Physical principle Spatial resolution Parameters imaged Depth Acquisition time Cost per scana
(US $)
PET Radioactivity 1–2 mm Metabolism, immunology No limit minutes/hours $1000–$2000
SPECT Radioactivity 1–2 mm Metabolism, immunology No limit minutes/hours $1000–$1500
MRI Electro-magnetism < 100 µm Structure, metabolism No limit minutes/hours $800–$1200
CT X-ray < 100 µm Structure No limit seconds $600–$800
  1. aCost per scan may vary depending on the injected dose price. Adapted from [52]