TY - JOUR
T1 - A phantom assessment of cold stomach-related artifacts in myocardial perfusion imaging
AU - Verburg, Frederik A.
AU - Romijn, Rutger L.
AU - Nekolla, Stephan
AU - Verzijlbergen, Johan F.
PY - 2009/7
Y1 - 2009/7
N2 - AIM: To study the effect of a 'cold stomach', caused by either air or water, on Tl-201 and Tc-99m myocardial perfusion single-photon emission computed tomography (MPS). MATERIALS AND METHODS: A stomach insert was created in a thorax phantom. MPS was performed with Tl-201 or Tc-99m. MPS was recorded with an empty stomach, a stomach filled with 0.5 or 1 l of water, or with 0.5 or 1 l of air. For Tc-99m, transmission scans for attenuation correction (AC) were also obtained. RESULTS: In Tl-201 MPS, filling the stomach with air caused an increase of activity in the infero-lateral wall, whereas filling the stomach with 1 l of water resulted in a slight decrease of activity in the infero-lateral wall. In Tc-99m MPS, filling the stomach with air also resulted in a higher activity in the infero-lateral wall, which normalized when AC was applied. Filling the stomach with water caused no marked differences in Tc-99m MPS with or without AC. CONCLUSION: A stomach filled with large amounts of water causes (mild) infero-lateral wall defects in Tl-201 MPS; a stomach filled with air causes a strong scintigraphic overexpression of the infero-lateral wall in both Tl-201 and Tc-99m MPS which can be compensated with AC.
AB - AIM: To study the effect of a 'cold stomach', caused by either air or water, on Tl-201 and Tc-99m myocardial perfusion single-photon emission computed tomography (MPS). MATERIALS AND METHODS: A stomach insert was created in a thorax phantom. MPS was performed with Tl-201 or Tc-99m. MPS was recorded with an empty stomach, a stomach filled with 0.5 or 1 l of water, or with 0.5 or 1 l of air. For Tc-99m, transmission scans for attenuation correction (AC) were also obtained. RESULTS: In Tl-201 MPS, filling the stomach with air caused an increase of activity in the infero-lateral wall, whereas filling the stomach with 1 l of water resulted in a slight decrease of activity in the infero-lateral wall. In Tc-99m MPS, filling the stomach with air also resulted in a higher activity in the infero-lateral wall, which normalized when AC was applied. Filling the stomach with water caused no marked differences in Tc-99m MPS with or without AC. CONCLUSION: A stomach filled with large amounts of water causes (mild) infero-lateral wall defects in Tl-201 MPS; a stomach filled with air causes a strong scintigraphic overexpression of the infero-lateral wall in both Tl-201 and Tc-99m MPS which can be compensated with AC.
KW - Attenuation
KW - Myocardial perfusion scintigraphy
KW - Single-photon emission computed tomography
KW - Subdiaphragmatic activity
UR - http://www.scopus.com/inward/record.url?scp=67650289899&partnerID=8YFLogxK
U2 - 10.1097/MNM.0b013e32832c79ce
DO - 10.1097/MNM.0b013e32832c79ce
M3 - Article
C2 - 19522083
AN - SCOPUS:67650289899
SN - 0143-3636
VL - 30
SP - 569
EP - 573
JO - Nuclear Medicine Communications
JF - Nuclear Medicine Communications
IS - 7
ER -