PMC5206417_01
Gallium-67 imaging was performed 72 hours after intravenous injection with 74 MBq of gallium-67 citrate. (a) Frontal planar image of gallium-67 scan showed abnormal accumulation of radioisotope in the heart. (b) Single photon emission computed tomography/computed tomography fusion image of gallium-67 scan showed diffuse abnormal accumulation of radioisotope in the thickened left atrial wall.
CRIRA2016-6374584.001.jpg
PMC5206417_01_CRIRA2016-6374584.001.jpg
fig1
The frontal planar image showed abnormal accumulation of radioisotope (RI) in the chest (Figure 1(a)). The single photon emission computed tomography/computed tomography (SPECT/CT) fusion images showed corresponding diffuse abnormal accumulation of RI in the thickened left atrial wall (Figure 1(b)), possibly suggesting active inflammation in the left atrial wall including acute myocarditis, sarcoidosis, or amyloidosis or malignant disease such as malignant lymphoma.
The second gallium-67 scintigraphy performed 2 months after the first scintigraphy. Gallium-67 imaging was performed 72 hours after intravenous injection with 74 MBq of gallium-67 citrate. (a) Frontal planar image of gallium-67 scan showed no abnormal accumulation of radioisotope in the heart. (b) Single photon emission computed tomography/computed tomography image of gallium-67 scan also showed no abnormal accumulation of radioisotope in the left atrial wall.
CRIRA2016-6374584.002.jpg
PMC5206417_01_CRIRA2016-6374584.002.jpg
fig2
In the second gallium-67 scan 2 months after the first scintigraphy, the abnormal accumulation in the heart was no longer visible on the planar and SPECT/CT images (Figure 2).