When body position changes from erect to supine, the effect of gravity on the organs also
changes and is a possible underlying mechanism for upward creep of the heart during …

Methods We enrolled prospectively 15 subjects undergoing exercise myocardial perfusion
imaging. Subjects had post-stress images acquired in both the prone and supine positions …

Reliability of myocardial blood flow (MBF) quantification in myocardial perfusion imaging
(MPI) using PET can majorly be affected by the occurrence of myocardial creep when using …

Departments ofRadiology, Nuclear Medicine Section and Medicine, Cardiovascular
Division, and the Cardiovascular ResearchInstitute ofthe University ofCalzfornia …

In this study, the authors investigate the effects of two patient involuntary motions, namely
upward creep (UC) and respiratory (RSP) motion, in myocardial SPECT images. A new …

We report patient motion in 110 Tl-201 cardiac perfusion SPECT studies in 66 patients. The
imaging consisted of emission followed by sequential transmission imaging during which …

To evaluate the impact of cardiac motion on attenuation correction and rest/stress
comparisons, we developed (1) an method for spatially registering multislice PET …

Objectives This article assesses the effect of a new correction technique (“motion-frozen
heart”) which compensates for the previously described nonuniform blurring of myocardial …

Aim To evaluate the feasibility of retrospectively detecting and correcting periodical (cardiac
and respiratory motion) and non-periodical shifts of the myocardial position (myocardial …

Patient motion during myocardial perfusion SPECT can produce images that show
artifactual perfusion defects. The relationship between the degree of motion and the extent …