RT Journal Article
SR Electronic
T1 Clinical PET: Repositioning Myocardial Studies After Bicycle Exercise
JF Journal of Nuclear Medicine Technology
JO J. Nucl. Med. Technol.
FD Society of Nuclear Medicine
SP 18
OP 21
VO 23
IS 1
A1 S.M. Hamblen
A1 T.L. Sell
A1 M.W. Hanson
A1 T.C. Hawk
A1 D.M. Coates
A1 J.M. Hoffman
A1 R.E. Coleman
YR 1995
UL http://tech.snmjournals.org/content/23/1/18.abstract
AB Objective: Myocardial viability studies were assessed for repositioning accuracy as adequate or inadequate by evaluation of NH3/FDG image correspondence and detection of measured attenuation correction (MSATN) artifacts.Methods: Myocardial viability studies using 13N-ammonia (NH3) and 18F-fluorodeoxyglucose (FDG) were evaluated in 29 normal subjects (21 rest and exercise, 7 exercise only and 1 rest only). Patients were positioned in the ECAT III gantry, and selected body landmarks were registered with the imaging bed. MSATN data were acquired. For exercise studies, upright bicycle exercise was then performed off the imaging bed. Intravenous NH3 or FDG was injected during exercise and the patient was repositioned and imaged.Results: Analysis revealed repositioning accuracy of 96% for rest NH3, 91% for rest FDG, 57% for exercise NH3 and 50% for exercise FDG.Conclusion: The problems encountered with repositioning make upright bicycle exercise for cardiac PET restrictive for routine clinical use with existing technology.