Respiratory compensation in cardiac PET using doubly-gated acquisitions
- Lawrence Berkeley National Lab., CA (United States)
We present results of respiratory compensation in cardiac PET data via doubly-gated acquisitions on a human subject. The extent of cardiac motion due to respiration has now been documented by numerous researchers. To correct for the blurring effects of this motion, we have modified the CTI/Siemens ECAT EXACT HR scanner to support acquisitions gated for different stages of both the cardiac and respiratory cycles. A human subject was injected with 11.0 mCi 18-FDG. After allowing time for the isotope to clear the blood pool, emission data were acquired for 30 minutes. The respiratory cycle was divided into five gates, the cardiac cycle into three gates for a total of fifteen 47-plane emission datasets. An ungated transmission dataset was acquired to correct for the effects of attenuation. Each gate was separately reconstructed using standard filtered backprojection techniques. Data resulting from the five respiratory gates obtained during diastole will be discussed in this paper.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 563341
- Report Number(s):
- CONF-970602--
- Journal Information:
- Journal of Nuclear Medicine, Journal Name: Journal of Nuclear Medicine Journal Issue: Suppl.5 Vol. 38; ISSN JNMEAQ; ISSN 0161-5505
- Country of Publication:
- United States
- Language:
- English
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