Clinical value of attenuation correction in stress-only Tc-99m sestamibi SPECT imaging
- Gary V. Heller,
- Timothy M. Bateman,
- Lynne L. Johnson,
- S. James Cullom,
- James A. Case,
- James R. Galt,
- Ernest V. Garcia,
- Keith Haddock,
- Kelly L. Moutray,
- Carlos Poston,
- Eli H. Botvinick,
- Matthews B. Fish,
- William P. Follansbee,
- Sean Hayes,
- Ami E. Iskandrian,
- John J. Mahmarian,
- William Vandecker
- … show all 17 hide
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Attenuation artifact remains a substantial limitation to confident interpretation of images and reduces laboratory efficiency by requiring comparison of stress and rest image sets. Attenuation-corrected stress-only imaging has the potential to ameliorate these limitations.
Methods and Results
Ten experienced nuclear cardiologists independently interpreted 90 stress-only electrocardiography (ECG)-gated technetium 99m sestamibi images in a sequential fashion: myocardial perfusion imaging (MPI) alone, MPI plus ECG-gated data, and attenuation-corrected MPI with ECG-gated data. Images were interpreted for diagnostic certainty (normal, probably normal, equivocal, probably abnormal, abnormal, and perceived need for rest imaging). With stress MPI data alone, only 37% of studies were interpreted as definitely normal or abnormal, with a very high perceived need for rest imaging (77%). The addition of gated data did not alter the interpretations. However, attenuation-corrected data significantly increased the number of studies characterized as definitely normal or abnormal (84%, P < 005) and significantly reduced the perceived need for rest imaging (43%, P < .005). These results were confirmed by use of a nonsequential consensus interpretation of three readers.
Attenuation correction applied to studies with stress-only Tc-99m ECG-gated single photon emission computed tomography images significantly increases the ability to interpret studies as definitely normal or abnormal and reduces the need for rest imaging. These findings may improve laboratory efficiency and diagnostic accuracy.
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- Clinical value of attenuation correction in stress-only Tc-99m sestamibi SPECT imaging
Journal of Nuclear Cardiology
Volume 11, Issue 3 , pp 273-281
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Myocardial perfusion imaging
- attenuation correction
- single photon emission computed tomography
- electrocardiography gating
- Industry Sectors
- Gary V. Heller (1)
- Timothy M. Bateman (2)
- Lynne L. Johnson (3)
- S. James Cullom (2)
- James A. Case (2)
- James R. Galt (4)
- Ernest V. Garcia (4)
- Keith Haddock (5)
- Kelly L. Moutray (2)
- Carlos Poston (5)
- Eli H. Botvinick (6)
- Matthews B. Fish (7)
- William P. Follansbee (8)
- Sean Hayes (9)
- Ami E. Iskandrian (10)
- John J. Mahmarian (11)
- William Vandecker (12)
- Author Affiliations
- 1. Nuclear Cardiology Laboratory, Hartford Hospital, 80 Seymour St, PO Box 5037, 06102-5037, Hartford, CT
- 2. Cardiovascular Consultants, Kansas City, Mo
- 3. Rhode Island Hospital, Providence, RI
- 4. Emory University, Atlanta, Ga
- 5. Mid America Heart Institute, Kansas City, Mo
- 6. University of California at San Francisco Medical Center, San Francisco, Calif
- 7. Sacred Heart Medical Center, Spokane, Wash
- 8. University of Pittsburgh, Pittsburgh, Pa
- 9. Cedars-Sinai Medical Center, Los Angeles, Calif
- 10. University of Alabama at Birmingham, Birmingham, Ala
- 11. Baylor College Medical Center, Houston, Tex
- 12. Medical College of Pennsylvania, Philadelphia, Pa