Diagnostic imaging

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Diagnostic imaging also called medical imaging, refers to the ensemble of methods used to generate visual representations of objects of clinical interest.[1] These include x-rays, computed tomography (CT), magnetic resonance imaging (MRI), Positron emission tomography (PET), Radionuclide angiography, Single Photon Emission Computed Tompography (SPECT) and ultrasonography. They are usually used to provide supplementary diagnostic information as well as to monitor the progress of disease and/ or therapy.

Physicians who devote their careers in the interpretation of these methods are radiologists or nuclear medicine specialists. Both specialties do other work besides imaging, but, in general, radiologists are concerned with images produced by directing an electromagnetic or ultrasound signal through the body to a receiver, where nuclear medicine is concerned with obtaining images from radioactive substances inside the body.

The interpretation of radiographs may be improved by:

  • access to prior images[2]
  • Double reading with arbitration (as opposed to consensus)[3]

References

  1. Anonymous (2024), Diagnostic imaging (English). Medical Subject Headings. U.S. National Library of Medicine.
  2. Aideyan UO, Berbaum K, Smith WL (March 1995). "Influence of prior radiologic information on the interpretation of radiographic examinations". Acad Radiol 2 (3): 205–8. PMID 9419549[e]
  3. Taylor P, Potts HW (April 2008). "Computer aids and human second reading as interventions in screening mammography: two systematic reviews to compare effects on cancer detection and recall rate". Eur. J. Cancer 44 (6): 798–807. DOI:10.1016/j.ejca.2008.02.016. PMID 18353630. Research Blogging.