There is a relatively high possibility of a malignant lesion in thyroid incidentaloma. FDG uptake of these lesions is not a useful tool in absolute discrimination between malignancy and benign lesion. The presence of primary or secondary malign lesion is diagnosed in 34.1% of the patients who are found to have incidental focal FDG uptake within thyroid gland in PET/CT scans, but we suggest that the thyroid incidentalomas detected on FDG PET/CT should be further examined with USG and scintigraphy.

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Visual and quantitative evaluations of the variation in inferior wall activity lead us to suggest that SPECT imaging with Tc-99m MIBI be performed in the left lateral position to allow better visualization of the inferior and septal walls in those departments not able to utilize computed tomographic attenuation correction.

Introduction: In the present study, we analyzed patients with stable coronary artery disease (SCAD) by quantitative myocardial perfusion scintigraphy and evaluated the effect of different coronary lesion locations on total perfusion deficit (TPD). Patients and Methods: A total of 133 consecutive patients with SCAD who underwent myocardial perfusion imaging single photon emission computed tomography (SPECT) and conventional coronary angiography according to SPECT results were included in the study. TPD was used as the automated quantification variable. Results: Of the patients, 61 had significant coronary artery disease, and 72 had normal coronary arteries. For the normal, left anterior descending artery (LAD), circumflex artery (CX), and right coronary artery (RCA) groups, the median values were 7% vs. 11% vs. 10% vs. 9%, 4% vs. 6% vs. 7% vs. 4%, and 3% vs. 5% vs. 6% vs. 3% for stress TPD (sTPD), rest TPD (rTPD), and ischemic TPD (iTPD), respectively. There was no statistically significant difference in quantitative analysis (sTPD, rTPD, and iTPD) between the LAD, CX, and RCA groups (p> 0.05). Conclusion: TPD obtained by quantitative analysis method can be used for all coronary artery lesion location.