Abstract
Background: The kinetics of para-[18F]fluorobenzylguanidine ([18F]PFBG) were investigated in a canine coronary artery occlusion model. Methods and Results: Five dogs were imaged by positron emission tomography (PET) before and after complete surgical ligation of the left anterior descending coronary artery. PET studies included a 10-minute dynamic [13N]NH3 perfusion scan, followed 1 hour later by 3-hour dynamic [18F]PFBG scanning. [18F]PFBG and [13N]NH3 images demonstrated homogeneous myocardial uptake/perfusion before infarction. One hundred eighty minutes after [18F]PFBG administration, myocardial accumulation was decreased by 60% (day, 2, 0.0065% ±0.0015% injected dose/ml) and 58% (day 16, 0.0069%±0.003% injected dose/ml) compared with a similar myocardial region of interest from the preinfarction (0.016%±0.005% injected dose/ml) study. Myocardial accumulation of [13N]NH3 at 9 minutes showed a 52% (day 2) and 7% (day 16) decrease compared with the preinfarction study. The accumulation of [18F]PFBG in the infarction was decreased significantly at 120 and 180 minutes on all postinfarction studies (p=0.01). In three dogs a significant decrease in the myocardial norepinephrine concentration was documented in the area of infarction (237±94 ng/gm) versus the noninfarcted (1018±48 ng/gm) myocardium (p=0.001). Conclusions: A decreased accumulation of [18F]PFBG was observed in the area of myocardial infarct in this canine model. The magnitude of the decrease in [18F]PFBG was larger than that seen with [13N]NH3 on day 16 after infarction suggesting reperfusion and persistent sympathetic neuronal dysfunction.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 119-129 |
| Number of pages | 11 |
| Journal | Journal of Nuclear Cardiology |
| Volume | 3 |
| Issue number | 2 |
| DOIs | |
| State | Published - Mar 1996 |
| Externally published | Yes |
Fingerprint
Keywords
- canine
- myocardial
- para-[F]fluorobenzylguanidine
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Cardiology and Cardiovascular Medicine
Cite this
Para-[18F]fluorobenzylguanidine kinetics in a canine coronary artery occlusion model. / Berry, Clifford R.; Garg, Pradeep K.; DeGrado, Timothy R; Hellyer, Peter; Weber, William; Garg, Sudha; Hansen, Bernard; Zalutsky, Michael R.; Edward Coleman, R.
In: Journal of Nuclear Cardiology, Vol. 3, No. 2, 03.1996, p. 119-129.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Para-[18F]fluorobenzylguanidine kinetics in a canine coronary artery occlusion model
AU - Berry, Clifford R.
AU - Garg, Pradeep K.
AU - DeGrado, Timothy R
AU - Hellyer, Peter
AU - Weber, William
AU - Garg, Sudha
AU - Hansen, Bernard
AU - Zalutsky, Michael R.
AU - Edward Coleman, R.
PY - 1996/3
Y1 - 1996/3
N2 - Background: The kinetics of para-[18F]fluorobenzylguanidine ([18F]PFBG) were investigated in a canine coronary artery occlusion model. Methods and Results: Five dogs were imaged by positron emission tomography (PET) before and after complete surgical ligation of the left anterior descending coronary artery. PET studies included a 10-minute dynamic [13N]NH3 perfusion scan, followed 1 hour later by 3-hour dynamic [18F]PFBG scanning. [18F]PFBG and [13N]NH3 images demonstrated homogeneous myocardial uptake/perfusion before infarction. One hundred eighty minutes after [18F]PFBG administration, myocardial accumulation was decreased by 60% (day, 2, 0.0065% ±0.0015% injected dose/ml) and 58% (day 16, 0.0069%±0.003% injected dose/ml) compared with a similar myocardial region of interest from the preinfarction (0.016%±0.005% injected dose/ml) study. Myocardial accumulation of [13N]NH3 at 9 minutes showed a 52% (day 2) and 7% (day 16) decrease compared with the preinfarction study. The accumulation of [18F]PFBG in the infarction was decreased significantly at 120 and 180 minutes on all postinfarction studies (p=0.01). In three dogs a significant decrease in the myocardial norepinephrine concentration was documented in the area of infarction (237±94 ng/gm) versus the noninfarcted (1018±48 ng/gm) myocardium (p=0.001). Conclusions: A decreased accumulation of [18F]PFBG was observed in the area of myocardial infarct in this canine model. The magnitude of the decrease in [18F]PFBG was larger than that seen with [13N]NH3 on day 16 after infarction suggesting reperfusion and persistent sympathetic neuronal dysfunction.
AB - Background: The kinetics of para-[18F]fluorobenzylguanidine ([18F]PFBG) were investigated in a canine coronary artery occlusion model. Methods and Results: Five dogs were imaged by positron emission tomography (PET) before and after complete surgical ligation of the left anterior descending coronary artery. PET studies included a 10-minute dynamic [13N]NH3 perfusion scan, followed 1 hour later by 3-hour dynamic [18F]PFBG scanning. [18F]PFBG and [13N]NH3 images demonstrated homogeneous myocardial uptake/perfusion before infarction. One hundred eighty minutes after [18F]PFBG administration, myocardial accumulation was decreased by 60% (day, 2, 0.0065% ±0.0015% injected dose/ml) and 58% (day 16, 0.0069%±0.003% injected dose/ml) compared with a similar myocardial region of interest from the preinfarction (0.016%±0.005% injected dose/ml) study. Myocardial accumulation of [13N]NH3 at 9 minutes showed a 52% (day 2) and 7% (day 16) decrease compared with the preinfarction study. The accumulation of [18F]PFBG in the infarction was decreased significantly at 120 and 180 minutes on all postinfarction studies (p=0.01). In three dogs a significant decrease in the myocardial norepinephrine concentration was documented in the area of infarction (237±94 ng/gm) versus the noninfarcted (1018±48 ng/gm) myocardium (p=0.001). Conclusions: A decreased accumulation of [18F]PFBG was observed in the area of myocardial infarct in this canine model. The magnitude of the decrease in [18F]PFBG was larger than that seen with [13N]NH3 on day 16 after infarction suggesting reperfusion and persistent sympathetic neuronal dysfunction.
KW - canine
KW - myocardial
KW - para-[F]fluorobenzylguanidine
UR - http://www.scopus.com/inward/record.url?scp=0029664918&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029664918&partnerID=8YFLogxK
U2 - 10.1016/S1071-3581(96)90004-5
DO - 10.1016/S1071-3581(96)90004-5
M3 - Article
VL - 3
SP - 119
EP - 129
JO - Journal of Nuclear Cardiology
JF - Journal of Nuclear Cardiology
SN - 1071-3581
IS - 2
ER -