Changes in Heart Imaging in Mild Cognitive Impairment with Lewy Bodies
Author Information
Author(s): Gemma Greenfinch, Calum A. Hamilton, Paul C. Donaghy, Michael Firbank, Nicola A. Barnett, Louise Allan, George S. Petrides, John-Paul Taylor, John T. O'Brien, Alan J. Thomas
Primary Institution: Newcastle University Translational and Clinical Research Institute, Newcastle, UK
Hypothesis
Is there a significant change in cardiac mIBG uptake between baseline and follow-up in individuals with mild cognitive impairment with Lewy bodies who had normal baseline scans?
Conclusion
Some individuals with mild cognitive impairment with Lewy bodies show a small decline in cardiac mIBG uptake over time, but all follow-up scans remained normal.
Supporting Evidence
- All eight participants had normal baseline scans and remained normal at follow-up.
- Three participants showed a decrease in uptake greater than 10%.
- The mean change in uptake was −5.2%.
Takeaway
The study looked at how heart scans changed over time in people with mild cognitive problems related to Lewy bodies, and found that while some showed a small decline, all their scans were still normal.
Methodology
Participants with mild cognitive impairment with Lewy bodies and normal baseline cardiac mIBG scans were rescanned after 2-4 years to assess changes in uptake.
Potential Biases
Potential bias due to the small sample size and exclusion of participants who progressed to dementia.
Limitations
The study had a small all-male sample and lacked definitive reference standards for Lewy body disease.
Participant Demographics
All participants were male, aged between 60 and 82 years.
Statistical Information
P-Value
0.22
Confidence Interval
95% confidence interval not specified
Statistical Significance
p=0.22
Digital Object Identifier (DOI)
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