Article Figures & Data
Figures
- FIGURE 1.
(a) Images obtained with 2-d 99mTc-sestamibi protocol. Findings are normal. (b) Images obtained with 1-d 99mTc-sestamibi protocol. Findings are normal.
- FIGURE 2.
Dual-isotope imaging. Reprinted from Crawford ES, Husain SS. Nuclear Cardiac Imaging: Terminology and Technical Aspects. Reston, VA: Society of Nuclear Medicine; 2003;33.
- FIGURE 3.
Images obtained with 99mTc-sestamibi (top row of each pair of rows) and 201Tl (bottom row of each pair) in dual-isotope protocol. Findings are normal.
- FIGURE 4.
Normal cavity size difference between images obtained with 99mTc-sestamibi (top row of each pair of rows) and those obtained with 201Tl (bottom row of each pair) in dual-isotope protocol.
Tables
- TABLE 1
Comparison of First-Pass Myocardial Extraction Fractions of Various 99mTc-Labeled Agents and 201Tl
Agent % Extraction fraction 201Tl 82–88 99mTc-Sestamibi 55–68 99mTc-Tetrofosmin 54 99mTc-Teboroxime >90 99mTc-NOET 75–85 Factor 99mTc-Sestamibi or 99mTc-tetrofosmin 201Tl Extraction fraction Lower Higher Myocardial retention Prolonged Comparatively shorter Myocardial washout Slower Rapid Redistribution Minimal Significant Myocardial perfusion at high blood flow Same Same Injected dose Higher Lower Counting statistics Better Fair Physical half-life 6 h 73.1 h Photon energy 140 kEv 68–80 kEv (abundance), 170 kEv (∼10%), and 135 kEv (∼3%) Radiation dosimetry More favorable Less favorable Protocol Sestamibi Tetrofosmin One-day protocol First dose 8–10 mCi 5–8 mCi Second dose 22–30 mCi 15–24 mCi Two-day protocol First dose 15–30 mCi 15–24 mCi Second dose 15–30 mCi 15–24 mCi ↵* Reprinted from Crawford ES, Husain SS. Nuclear Cardiac Imaging: Terminology and Technical Aspects. Reston, VA: Society of Nuclear Medicine; 2003:29.
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- Article
- Abstract
- RADIOPHARMACEUTICALS
- COMPARISON OF 201TL AND 99MTC-LABELED MYOCARDIAL PERFUSION IMAGING TRACER KINETICS
- RELATIONSHIP BETWEEN CORONARY BLOOD FLOW AND MYOCARDIAL UPTAKE OF VARIOUS RADIOTRACERS
- PHYSICAL AND BIOLOGIC COMPARISONS OF MYOCARDIAL PERFUSION IMAGING AGENTS
- VARIOUS IMAGING PROTOCOLS
- CONCLUSION
- Acknowledgments
- Footnotes
- References
- Figures & Data
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