Author/Authors :
Hoon Kim، Tae نويسنده Research Institute of Medical Imaging, Chonnam National
University Medical School, Gwangju, Republic of Korea , , Woo Jeong، Gwang نويسنده Research Institute of Medical Imaging, Chonnam National
University Medical School, Gwangju, Republic of Korea , , Su Kim، Tae نويسنده Department of Radiology, Chonnam National University
Hospital, Chonnam National University Medical School, Gwangju,
Republic of Korea , , Hyeon Kim، Yun نويسنده Department of Radiology, Chonnam National University
Hospital, Chonnam National University Medical School, Gwangju,
Republic of Korea ,
Abstract :
We report a 73-year-old woman with primary left atrial
rhabdomyosarcoma and its 1H MR spectroscopy (MRS) findings. The tumor
showed a 2.8 cm sized lesion in the posteroinferior atrial wall on MRI.
1H MR spectra were acquired using a point-resolved spectroscopy (PRESS)
sequence with electrocardiographic (ECG) gating and respiratory motion.
The use of 1H-MRS allowed the quantification of triglyceride (TG) peak
groups at 0.9 and 1.3 ppm, and unsaturated group of lipids at 2.1 ppm,
creatine (Cr) at 3.0 ppm, and choline (Cho) at 3.2 ppm. The percentages
of the myocardial metabolites based on water-peak in the
interventricular septum were TG 18.4%, Cr 1.6%, Cho 3.3% and unsaturated
group 4.0%, whereas the rhabdomyosarcoma showed TG 118.8%, unsaturated
group 5.1%, Cr 1.3%, Cho 3.5% and the olefinic components of fatty acid
at 5.4 ppm 24.5%. This case demonstrates that 1H-MRS is potentially
useful to diagnose the rhabdomyosarcoma by quantifying the myocardial
metabolites which are important biomarkers for heart function and
diseases.
