uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Feasibility of subendocardial and subepicardial myocardial perfusion measurements in healthy normals with (15)O-labeled water and positron emission tomography
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science.
Show others and affiliations
2011 (English)In: Journal of Nuclear Cardiology, ISSN 1071-3581, E-ISSN 1532-6551, Vol. 18, no 4, 650-656 p.Article in journal (Refereed) Published
Abstract [en]

Positron emission tomography (PET) enables robust and reproducible measurements of myocardial blood flow (MBF). However, the relatively limited resolution of PET till recently prohibited distinction between the subendocardial and the subepicardial layers in non-hypertrophied myocardium. Recent developments in hard- and software, however, have enabled to identify a transmural gradient difference in animal experiments. The aim of this study is to determine the feasibility of subendocardial and subepicardial MBF in normal human hearts assessed with (15)O-labeled water PET. Twenty-seven healthy subjects (mean age 41 +/- A 13 years; 11 men) were studied with (15)O-labeled water PET to quantify resting and hyperaemic (adenosine) MBF at a subendocardial and subepicardial level. In addition, cardiac magnetic resonance imaging was performed to determine left ventricular (LV) volumes and function. Mean rest MBF was 1.46 +/- A 0.49 in the subendocardium, and 1.14 +/- A 0.342 mL center dot A min(-1) center dot A g(-1) in the subepicardium (P < .001). MBF during vasodilation was augmented to a greater extent at the subepicardial level (subendocardium vs subepicardium: 3.88 +/- A 0.86 vs 4.14 +/- A 0.88 mL center dot A min(-1) center dot A g(-1), P = .013). The endocardial-to-epicardial MBF ratio decreased significantly during hyperaemia (1.35 +/- A 0.23 to 1.12 +/- A 0.20, P < .001). Hyperaemic transmural MBF was inversely correlated with left ventricular end-diastolic volume index (LVEDVI) (r (2) = 0.41, P = .0003), with greater impact however at the subendocardial level. (15)O-labeled water PET enables MBF measurements with distinction of the subendocardial and subepicardial layers in the normal human heart and correlates with LVEDVI. This PET technique may prove useful in evaluating patients with signs of ischaemia due to coronary artery disease or microvascular dysfunction.

Place, publisher, year, edition, pages
2011. Vol. 18, no 4, 650-656 p.
Keyword [en]
Positron emission tomography, imaging, coronary microcirculation, myocardial blood flow, subendocardial
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-157029DOI: 10.1007/s12350-011-9375-yISI: 000293138900021OAI: oai:DiVA.org:uu-157029DiVA: diva2:434658
Available from: 2011-08-16 Created: 2011-08-15 Last updated: 2011-08-16Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Radiology, Oncology and Radiation Science
In the same journal
Journal of Nuclear Cardiology
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 191 hits
ReferencesLink to record
Permanent link

Direct link