Difference in Filtered-Back Projection and Iterative Reconstruction in a Patient With Increased Splanchnic Uptake

We performed a dual isotope, gated adenosine stress myocardial perfusion study on a 44-year-old man. Using filtered-back projection, images showed an inferior wall defect. However, intense liver uptake during adenosine stress was suspected to inaccurately cause diminished inferior wall counts. The p...

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Bibliographic Details
Published in:Clinical nuclear medicine 2005-09, Vol.30 (9), p.623-624
Main Authors: Kitchens, Christopher T, Halkar, Raghuveer K, Alazraki, Naomi P, Galt, James
Format: Article
Language:English
Subjects:
Adult
Algorithms
Humans
Image Enhancement - methods
Image Interpretation, Computer-Assisted - methods
Liver - diagnostic imaging
Liver - metabolism
Male
Myocardial Infarction - complications
Myocardial Infarction - diagnostic imaging
Myocardial Infarction - metabolism
Radionuclide Imaging
Radiopharmaceuticals - pharmacokinetics
Splanchnic Circulation
Thallium - pharmacokinetics
Ventricular Dysfunction, Left - diagnostic imaging
Ventricular Dysfunction, Left - etiology
Ventricular Dysfunction, Left - metabolism
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Summary:We performed a dual isotope, gated adenosine stress myocardial perfusion study on a 44-year-old man. Using filtered-back projection, images showed an inferior wall defect. However, intense liver uptake during adenosine stress was suspected to inaccurately cause diminished inferior wall counts. The patient has end-stage renal disease, diabetes mellitus, and hypertension. The excessive hepatic uptake was noted on planar rotating images and is likely related (at least in part) to reduced renal uptake (not shown subsequently). Using iterative reconstruction, the inferior cardiac defect was markedly reduced. The patient subsequently underwent surgery without complication.
ISSN:0363-9762
1536-0229
DOI:10.1097/01.rlu.0000174237.53659.6d