Comparison of maximal Rubidium-82 activities for myocardial blood flow quantification between digital and conventional PET systems
PET-based myocardial blood flow (MBF) quantification can be inaccurate when using high tracer activities. Our aim was to derive the maximal Rubidium-82 activity for MBF assessment using a new digital PET system and compare the results with conventional analog systems. 1.8 GBq Rubidium-82 was injecte...
Saved in:
Published in | Journal of nuclear cardiology Vol. 26; no. 4; pp. 1286 - 1291 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Cham
Elsevier Inc
01.08.2019
Springer International Publishing Springer Nature B.V |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | PET-based myocardial blood flow (MBF) quantification can be inaccurate when using high tracer activities. Our aim was to derive the maximal Rubidium-82 activity for MBF assessment using a new digital PET system and compare the results with conventional analog systems.
1.8 GBq Rubidium-82 was injected into the cardiac insert of an anthropomorphic torso phantom. Data were acquired for 10 min using an Ingenuity TF (Philips Healthcare), Discovery 690 (D690, GE Healthcare), and digital PET prototype system (Philips Healthcare). The dynamic ranges, defined as the maximal measured activity in the reconstructed images deviating < 10% from the true present activity, were determined in all scans.
The dynamic ranges were 312 MBq for Ingenuity TF, 650 MBq for D690, and 654 MBq for digital PET prototype.
The maximal Rb-82 activity for MBF assessment using digital PET prototype is higher than that for its analog counterpart (Ingenuity TF), but seems comparable to the D690. |
---|---|
Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1071-3581 1532-6551 1532-6551 |
DOI: | 10.1007/s12350-017-1156-9 |