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PET-CT imaging

H. Palmedo, Combined FDG PET/CT imaging for restaging of colorectal cancer patients Impact of image fusion on staging accuracy, Rofo 177(9) (2005) 1235-1241. [Pg.183]

Describe the technique of PET/CT imaging. Why is PET/CT better than only PET in detecting various tumors ... [Pg.39]

PET/CT imaging has the advantage over dedicated PET imaging because of ... [Pg.39]

Although PET/CT modality is widely employed for diagnostic purpose, CT data acquired either for fusion of PET and CT images or for photon attenuation correction are affected by several factors that cause artifacts in PET/CT images. The factors include patient positioning, metal objects, CT contrast agents, truncation artifacts, and respiratory movement, which are discussed below. [Pg.62]

A simple method of recovering the truncated data is to linearly extrapolate the truncated CT projections to the extent of PET FOV and then setting the values to zero at the edge of the PET FOV. The attenuation correction by this method is adequate to remove the truncation artifacts in PET/CT images (Fig. 3.15). Using the iterative method rather than the filtered back projection technique also has shown to help to eliminate these artifacts. [Pg.65]

Figure 3.16. Effect of respiratory movement on fused PET/CT image showing a cold spot due to low attenuation in the area of the displaced diaphragm during breath-hold CT scan. (Reprinted with permission from Parker et al at Web site, http //www. j pnm.org)... Figure 3.16. Effect of respiratory movement on fused PET/CT image showing a cold spot due to low attenuation in the area of the displaced diaphragm during breath-hold CT scan. (Reprinted with permission from Parker et al at Web site, http //www. j pnm.org)...
Contrast agents used in the CT part of PET/CT imaging cause overestimation of attenuation correction in PET images. True False... [Pg.68]

Sureshbabu W, Mawlawi O (2005). PET/CT imaging artifacts. J Nucl Med Technol 33 156... [Pg.69]

Review thoroughly the regulations pertaining to the practice of nuclear medicine technologists in performing PET/CT imaging. [Pg.176]

In view of the above discussion, it is understandable that the procedures described below are a few among many with variations in detail, but the basics of PET or PET/CT imaging remain the same. [Pg.205]

Whole-Body PET/CT Imaging with 18F-FDG Physician Directive... [Pg.207]

The CT, PET, and fused PET/CT images are then sent to the workstation for display and interpretation. [Pg.208]

Accurate fusion of PET and CT images requires correction for the motion of the heart and diaphragm. Fusion of the PET/CT images by hardware or software is both more sensitive and specific in detection of abnormalities an looking at the two sets of images side by side. [Pg.78]

Selzner M, Hany TF, Wildbrett P, McCormack L, Kadry Z, Clavien PA (2004) Does the novel PET-CT imaging modality impact on the treatment of patients with metastatic colorectal cancer of the liver Ann Surg 240 1027-1034 discussion 1035-1036... [Pg.106]

Murphy M, O Brien TJ, Morris K et al. (2001) Multimodality image-guided epilepsy surgery. J Clin Neurosci 8(6) 534-538 Myers R (2002) The application of PET-MR image registration in the brain. Br J Radiol 75 Spec No S31-35 Nehmeh SA, Erdi YE, Pan T et al. (2004a) Pour-dimensional (4D) PET/CT imaging of the thorax. Med Phys 31(12) 3179-3186... [Pg.122]

MacManus MP, Bayne M, Frmmell N, Reynolds J, Everitt S, Ball D, Pitman A, Ware R, Lau E (2007) Reproducibility of intelligenf contouring of gross tumor volume in non-small cell lung cancer on PET/CT images using a standardized visual method. Int J Radiat Oncol Biol Phys 69 8154-8155... [Pg.165]

Fig. 33.4 Principle of PET-CT imaging CT and PET are installed in series. A single examination table serves both the CT and the PET. After positioning the patient on the examination table, CT data are acquired first followed by acquisition of the PET. Since the patient is in the same position on the examination table during CT and PET, both data sets can be accurately fused following the examination... Fig. 33.4 Principle of PET-CT imaging CT and PET are installed in series. A single examination table serves both the CT and the PET. After positioning the patient on the examination table, CT data are acquired first followed by acquisition of the PET. Since the patient is in the same position on the examination table during CT and PET, both data sets can be accurately fused following the examination...
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CT imaging

Whole body PET/CT imaging

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