A dynamic change by 123I-15-(p-iodophenyl)-3-R,S-methyl pentadecanoic acid myocardial single photon emission computed tomography in a 55-year-old woman.
A 55-year-old woman was admitted to hospital with chest discomfort. Emergency angiography revealed no organic stenosis in the coronary artery, but there was akinesis in the apico-anteroseptal region of the left ventricle. Left ventriculography on the 5th day after admission was normal. On the 2nd day, initial imaging by 123I-15-(p-iodophenyl)-3-R,S-methylpentadecanoic acid (BMIPP) myocardial single photon emission computed tomography (SPECT) indicated a slight decrease in tracer uptake and delayed imaging revealed fill-in in the apicoanteroseptal regions in spite of akinesis in those areas. On the 4th day, initial imaging by 123I-BMIPP showed a moderate decrease in tracer uptake and delayed imaging revealed a high washout again in those areas. On the 12th day, initial imaging by 123I-BMIPP showed a severely reduced uptake in the apico-anteroseptal regions and delayed imaging disclosed a high washout, in the same areas that showed akinesis during the acute phase. On the 35th day, 123I-BMIPP identified no significant decrease in tracer uptake. It is suggested that these dynamic changes in 123I-BMIPP myocardial SPECT imaging may reflect the metabolic change of fatty acid in the ischemic state, the size and degree of turnover of the triacylglycerol pool.
Kawasaki
T
T
Department of Internal Medicine, Murakami Memorial Hospital, Asahi University, Gifu, Japan.
Ito
K
K
Okano
A
A
Nagata
K
K
Okamoto
A
A
Yoneyama
S
S
Katoh
S
S
D005227:Fatty Acids / Q000378:metabolism; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000000981:diagnostic imaging*; D009206:Myocardium / Q000378:metabolism; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*
D005227:Fatty Acids; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; C049338:iodofiltic acid