Severe Coronary Tortuosity or Myocardial Bridging in Patients With Chest Pain, Normal Coronary Arteries, and Reversible Myocardial Perfusion Defects

2011 ◽  
Vol 108 (7) ◽  
pp. 973-978 ◽  
Author(s):  
Nicola Gaibazzi ◽  
Fausto Rigo ◽  
Claudio Reverberi
Keyword(s):  
Chest Pain ◽  
Myocardial Perfusion ◽  
Coronary Arteries ◽  
Myocardial Bridging ◽  
Normal Coronary Arteries ◽  
Perfusion Defects ◽  
Coronary Tortuosity ◽  
Myocardial Perfusion Defects

Abnormal myocardial perfusion defects in patients with mitral valve prolapse and normal coronary arteries

1978 ◽  
Vol 41 (2) ◽  
pp. 433 ◽  
Author(s):  
Howard M. Staniloff ◽  
Victor F. Huckell ◽  
John E. Morch ◽  
Andrew J. Buda ◽  
David H. Feiglin ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Myocardial Perfusion ◽  
Coronary Arteries ◽  
Mitral Valve Prolapse ◽  
Normal Coronary Arteries ◽  
Perfusion Defects ◽  
Myocardial Perfusion Defects

ST-Vector Orientation and Location of Myocardial Perfusion Defects during Exercise

1978 ◽  
Vol 17 (04) ◽  
pp. 154-156 ◽  
Author(s):  
A. Withagen ◽  
R. Vinke ◽  
P. Kooy ◽  
W. Bakker ◽  
M.L. Simoons
Keyword(s):  
Chest Pain ◽  
Myocardial Perfusion Imaging ◽  
Myocardial Perfusion ◽  
Spatial Orientation ◽  
Myocardial Uptake ◽  
Perfusion Defects ◽  
Vector Orientation ◽  
Exercise Induced ◽  
Local Defects ◽  
Myocardial Perfusion Defects

In 34 patients with chest pain the spatial orientation of the ST-vectors in the exercise electrocardiogramm 30 and 80 msec after the end of QRS were compared with the location of exercise induced local defects of myocardial uptake of 201T1. The following results were obtained:1. The sensitivity and specifity of myocardial perfusion imaging after exercise were the same as those of exercise electrocardiograms;2. No relation could be observed between the location of reduced 201T1 uptake during exercise and the spatial orientation of the ST-vectors.

scholarly journals Discrepancy between stress electrocardiographic changes and nuclear myocardial perfusion defects in the prognostic assessment of patients with chest pain

2013 ◽  
Vol 32 (10) ◽  
pp. 761-768
Author(s):  
Sergio Raposeiras-Roubin ◽  
Miguel Garrido-Pumar ◽  
Virginia Pubulnuñez ◽  
Carlos Peña-Gil ◽  
Sonia Argibay-Vázquez ◽  
...  
Keyword(s):  
Chest Pain ◽  
Myocardial Perfusion ◽  
Prognostic Assessment ◽  
Perfusion Defects ◽  
Electrocardiographic Changes ◽  
Myocardial Perfusion Defects

Assessment of Myocardial Perfusion by Angiographic Methods in Tortuous Coronary Arteries

Angiology ◽  
2020 ◽  
Vol 71 (7) ◽  
pp. 616-620
Author(s):  
Kerim Esenboga ◽  
Emir Baskovski ◽  
Ebru Sahin ◽  
Nil Ozyuncu ◽  
Turkan Seda Tan ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Myocardial Perfusion ◽  
Coronary Arteries ◽  
Tissue Perfusion ◽  
Tissue Level ◽  
Control Group ◽  
Normal Coronary Arteries ◽  
Coronary Tortuosity ◽  
The Relationship ◽  
Myocardial Blush Grade

The relationship between coronary tortuosity (CorT) and tissue-level myocardial perfusion is not clear. We investigated tissue perfusion in myocardial territories supplied by tortuous coronary arteries. Among patients who had undergone coronary angiography, patients with reported CorT, those with ≥1 coronary artery were included in the study group (100 patients). The control group included patients with normal coronary arteries (100 patients). Thrombolysis In Myocardial Infarction frame count (TFC) and myocardial blush grade (MBG) were calculated for each coronary artery. Mean TFC was significantly higher in tortuous right coronary artery (RCA), left anterior descending (LAD) artery, and circumflex (Cx) artery compared to their non-tortuous counterparts (28.81 ± 6.463 vs 21.94 ± 3.328, P = .009; 43.28 ± 5.698 vs 36.17 ± 3.875, P = .006; 29.35 ± 4.111 vs 23.821 ± 2.639; P < .001, respectively). Mean MBG was also significantly lower in tortuous RCA, LAD, and Cx, compared to their normal counterparts (2.78 ± 0.417 vs 2.98 ± 0.155, P < .001; 2.74 ± 0.483 vs 2.97 ± 0.164, P < .001; 2.92 ± 0.277 vs 2.99 ± 0.110, P < .001, respectively). For each tortuous coronary artery, TFC was similar for every MBG category. Tortuous coronary arteries have higher TFC and lower MBG, suggesting impaired epicardial and microvascular coronary flow, when compared to normal coronary arteries.

scholarly journals Long-term prognostic value of quantitative myocardial perfusion in patients with chest pain and normal coronary arteries

2018 ◽  
Vol 26 (6) ◽  
pp. 1844-1852 ◽  
Author(s):  
Andrea G. Monroy-Gonzalez ◽  
R. A. Tio ◽  
J. C. de Groot ◽  
H. H. Boersma ◽  
N. H. Prakken ◽  
...  
Keyword(s):  
Chest Pain ◽  
Myocardial Perfusion ◽  
Coronary Arteries ◽  
Prognostic Value ◽  
Normal Coronary Arteries ◽  
Quantitative Myocardial Perfusion

scholarly journals Determinants of coronary flow reserve in non-diabetic patients with chest pain without myocardial perfusion defects

PLoS ONE ◽  
2017 ◽  
Vol 12 (4) ◽  
pp. e0176511 ◽  
Author(s):  
Helena U. Westergren ◽  
Erik Michaëlsson ◽  
Juuso I. Blomster ◽  
Tasso Miliotis ◽  
Sara Svedlund ◽  
...  
Keyword(s):  
Chest Pain ◽  
Myocardial Perfusion ◽  
Coronary Flow Reserve ◽  
Coronary Flow ◽  
Diabetic Patients ◽  
Flow Reserve ◽  
Perfusion Defects ◽  
Myocardial Perfusion Defects

P6148Visually assessed coronary and cardiac calcium outperforms perfusion data during scintigraphy in the prediction of adverse outcomes

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
S Suma ◽  
S Garibaldi ◽  
D Sartorio ◽  
G Pressman ◽  
N Gaibazzi
Keyword(s):  
Myocardial Perfusion ◽  
Attenuation Correction ◽  
Coronary Arteries ◽  
Ct Images ◽  
Hazard Ratio ◽  
Cardiac Events ◽  
Computed Tomography Images ◽  
Perfusion Defects ◽  
Myocardial Perfusion Defects

Abstract Background The presence and amount of calcium in the coronary arteries, but also in the heart valves and aorta, has been clearly associated with cardiovascular and all-cause mortality and this information might be prognostically useful during SPECT-CT examinations, where CT images are co-registered for attenuation correction of myocardial perfusion, but then discarded. Objectives This study sought to determine whether the assessment of calcifications of the coronary arteries, cardiac valves and thoracic aorta in the computed tomography images co-registered for attenuation correction during stress-scintigraphy (SPECT-CT) is associated with long-term mortality and cardiac events on top of other available data. Methods Baseline data were collected prospectively on 353 consecutive patients, referred for suspected coronary artery disease (CAD) with no previously known CAD who underwent stress SPECT-CT between Sept 2010 and Oct 2012. Retrospective analysis was performed on follow-up data for outcomes. Results Patients (mean age 72 years. 58% males) had a mean follow-up of 6.4 years, during which 48 died (15 from cardiovascular causes) and 10 had a non-fatal myocardial infarction (MI). Reversible myocardial perfusion defects were detected in 55 patients (15.6%), 39 of whom (11%) had more than mild defects. The presence of an overall visual calcium score >1 in the attenuation correction images was the most strong univariable (hazard ratio 8.99, p<0.0001) and multivariable (hazard ratio 4.76, p<0.0001) predictor of all-cause death or non-fatal MI on top of age, gender, irreversible myocardial perfusion defects and revascularization after the test. Multivariable models Clinical + SPECT + Overall Calcium Ischemic Cardiac Events HR CI (95%) p-value χ2 Age 1.058 1.0234 to 1.093 0.0008 Male gender 1.63 0.88 to 3.024 0.1183 Fixed perfusion defect 3.924 1.63 to 9.426 0.0022 Overall Calcium >1 4.765 2.2 to 10.32 <0.0001 71.69 Kaplan-Meier Conclusions Visual assessment of coronary or overall coronary, cardiac and aortic calcium in the CT images used for attenuation correction during SPECT-CT is feasible, reproducible and strongly associated with hard cardiac events and all-cause death, beyond clinical variables and myocardial perfusion data. This incredibly easy visual calcium assessment does not require additional costs or radiation and may heavily impact on better risk-assessment of patients with suspected CAD undergoing SPECT-CT.

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