11C-Coenzyme Q10: A new myocardial imaging tracer for positron emission tomography

Kiichi Ishiwata, Yuka Miura, Toshihiro Takahashi, Koichiro Kawashima, Kazuhiko Yanai, Minoru Monma, Tatsuo Ido

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Coenzyme Q10 (CoQ10) is a co-factor of the mitochondrial electron-transfer system. 11C-Labeled CoQ10 was synthesized and its biodistribution in rats was examined comparing two kinds of preparation methods using different emulsifiers as a basic study for application of positron emission tomography. 11C-CoQ10 emulsified in saline with polyoxyethylene hydrogenated caster oil was present in the highest concentration in the blood at 30 min. On the other hand, the 11C-CoQ10 emulsified with phospholipids was rapidly cleared from the blood. The liver and spleen uptakes were high probably due to endocytosis, reflecting the characteristics of liposomes. The myocardial uptake was also high just after administration, and the heart-to-blood concentration ratio was over 10 after 5 min. These results suggest that 11C-CoQ10 prepared with liposomes may be a myocardial imaging tracer.

Original languageEnglish
Pages (from-to)162-165
Number of pages4
JournalEuropean Journal of Nuclear Medicine
Issue number5
Publication statusPublished - 1985 Oct
Externally publishedYes


  • Coenzyme Q
  • Myocardial imaging
  • Positron

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


Dive into the research topics of '11C-Coenzyme Q10: A new myocardial imaging tracer for positron emission tomography'. Together they form a unique fingerprint.

Cite this