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Michael Ljungberg

Michael Ljungberg

Professor

Michael Ljungberg

Nuclear medicine : Physics and instrumentation special feature review article: SPECT/CT: An update on technological developments and clinical applications

Författare

  • Michael Ljungberg
  • P. Hendrik Pretorius

Summary, in English

Functional nuclear medicine imaging with single-photon emission CT (SPECT) in combination with anatomical CT has been commercially available since the beginning of this century. The combination of the two modalities has improved both the sensitivity and specificity of many clinical applications and CT in conjunction with SPECT that allows for spatial overlay of the SPECT data on good anatomy images. Introduction of diagnostic CT units as part of the SPECT/CT system has also potentially allowed for a more cost-efficient use of the equipment. Most of the SPECT systems available are based on the well-known Anger camera principle with Nal(TI) as a scintillation material, parallel-hole collimators and multiple photomultiplier tubes, which, from the centroid of the scintillation light, determine the position of an event. Recently, solid-state detectors using cadmium-zinc-Telluride became available and clinical SPECT cameras employing multiple pinhole collimators have been developed and introduced in the market. However, even if new systems become available with better hardware, the SPECT reconstruction will still be affected by photon attenuation and scatter and collimator response. Compensation for these effects is needed even for qualitative studies to avoid artefacts leading to false positives. This review highlights ):he recent progress for both new SPECT cameras systems as well as for various data-processing and compensation methods.

Avdelning/ar

  • Medicinsk strålningsfysik, Lund

Publiceringsår

2018

Språk

Engelska

Publikation/Tidskrift/Serie

British Journal of Radiology

Volym

91

Issue

1081

Dokumenttyp

Artikel i tidskrift

Förlag

British Institute of Radiology

Ämne

  • Radiology, Nuclear Medicine and Medical Imaging
  • Other Physics Topics

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 0007-1285