Book contents
- Frontmatter
- Contents
- Contributors
- Series Foreword
- Foreword
- Preface to Breast Cancer
- 1 Epidemiology of female breast cancer
- 2 Quality assurance in breast cancer screening
- 3 Measuring radiology performance in breast screening
- 4 Advances in X-ray mammography
- 5 Advanced applications of breast ultrasound
- 6 The detection of small invasive breast cancers by mammography
- 7 Ductal carcinoma in situ: current issues
- 8 Pathology: ductal carcinoma in situ and lesions of uncertain malignant potential
- 9 Advanced breast biopsy techniques
- 10 Radiological assessment of the axilla
- 11 Breast magnetic resonance imaging
- 12 Application of positron emission tomography – computerized tomography in breast cancer
- 13 Advances in the adjuvant treatment of early breast cancer
- Index
- Plate section
- References
12 - Application of positron emission tomography – computerized tomography in breast cancer
Published online by Cambridge University Press: 06 July 2010
- Frontmatter
- Contents
- Contributors
- Series Foreword
- Foreword
- Preface to Breast Cancer
- 1 Epidemiology of female breast cancer
- 2 Quality assurance in breast cancer screening
- 3 Measuring radiology performance in breast screening
- 4 Advances in X-ray mammography
- 5 Advanced applications of breast ultrasound
- 6 The detection of small invasive breast cancers by mammography
- 7 Ductal carcinoma in situ: current issues
- 8 Pathology: ductal carcinoma in situ and lesions of uncertain malignant potential
- 9 Advanced breast biopsy techniques
- 10 Radiological assessment of the axilla
- 11 Breast magnetic resonance imaging
- 12 Application of positron emission tomography – computerized tomography in breast cancer
- 13 Advances in the adjuvant treatment of early breast cancer
- Index
- Plate section
- References
Summary
Introduction
At present there is no clinical role for whole or half body imaging with 18F-fluoro-2-deoxy-D-glucose (FDG)–positron emission tomography (PET) in detecting breast cancer, but this technique has been shown to be useful in staging and restaging breast cancer, in the evaluation of response to therapy, and in problem solving when conventional imaging results are equivocal. In these scenarios FDG–PET often demonstrates loco-regional or unsuspected distant disease that affects clinical management.
Positron emission tomography
PET is an imaging technique increasingly used in oncology. It may map functional activity before structural changes have taken place. The most commonly used isotope is FDG, a glucose analogue which, like normal glucose, is taken up by cells via the membrane glucose transporter system and phosphorylated by hexokinase. Unlike glucose, the metabolic product FDG-6-phosphate does not cross the cell membrane and is trapped in cells. FDG accumulation is dependent on the rate of transport through the cell membrane mediated by glucose transporters (GLUT). Many malignancies, including breast cancers, show increased expression of GLUT-1, contributing to increased FDG accumulation. FDG may also accumulate in non-malignant areas of infection or inflammation leading to false-positive findings.
Technique
An intravenous injection of 300 to 400 megabecquerels (MBq) of FDG is used in most institutions and the patient imaged at least one hour after injection. Delaying the time of imaging may improve the tumor-to-background ratio.
- Type
- Chapter
- Information
- Breast Cancer , pp. 218 - 240Publisher: Cambridge University PressPrint publication year: 2010