• Journal of Chest Surgery
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• 제46권1호
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• pp.84-87
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• 2013

A 60-year-old man visited the outpatient clinic due to one month of recurrent exertional chest pain. Eleven years earlier he had undergone off-pump coronary artery bypass grafting using bilateral internal thoracic artery (ITA) Y-composite grafts based on the left ITA. Preoperative coronary angiography showed patent distal graft anastomoses and visualized the left ITA retrogradely. The arch aortography revealed near-total occlusion of the left subclavian artery at the level of the ostium. The patient underwent left carotid-to-subclavian artery bypass grafting using a 6 mm vascular conduit. Postoperative computed tomographic angiography revealed a patent bypass conduit between the left common carotid artery and left subclavian artery. The patient was discharged on postoperative day 4 with no symptoms or signs of myocardial ischemia.

• 대한핵의학회지
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• 제27권1호
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• pp.51-58
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• 1993

We have anlayzed the polar maps of dipyridamole stress/rest $^{99m}Tc$-MIBI SPECT and compared the quantitated perfusion defects of dipyridamole stress polar map and the findings of coronary angiography in 56 pateints with coronary artery diseases. We performed the same day dipyridamole stress-rest myocardial SPECT, reconstructed the polar maps according to Cedars-Sinai method and quantitated perfusion detects of total myocardium and the territory of each artery, comparing the polar maps of patients with normal files. Stenosis more than 50 percent was considered significant and myocardial ischemic score was calculated as summed score of percents of main coronary arteries. Positive concordance of myocardial SPECT with coronary angiography were 82.6% with left anterior descending artery (LAD), 85.7% with left circumflex artery (LCx) and 78.6% with right coronary artery (RCA). Perfusion defect of SPECT polar map and the stenosis of coronary artery showed the contingency phi of 0.55 (p<0.0001) with total atreries, 0.38 (p = 0.016) with LAD, 0.50 (p<0.0001) with LCx and 0.40 (p = 0.007) with RCA. Dipyridamole stress percent defect of polar map was correlated with myocardial ischemic score with Spearman's rho of 0.47 (p = 0.001) in total arteries, 0.48 (p=0.001) in LAD, 0.56 (p < 0.001) in LCx and 0.38 (p=0.002) in RCA. These findings revealed that defect of the dipyridamole stress myocardial $^{99m}Tc$-MIBI SPECT and the percent extent of this defect were related with significant artery stenosis of individual arteries and the degree of stenosis. We thought that we could use the defects in the polar map of dipyridamole stress $^{99m}Tc$-MIBI SPECT for the quantification of myocardiasl perfusion decrease.

• Journal of Chest Surgery
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• 제37권11호
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• pp.925-928
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• 2004

관상동맥-페동맥루는 관상동맥 기형 중 드문 질환으로 그중에서도 양측성은 매우 드물다. 흉통 및 호흡곤란을 주소로 내원한 두 환자에서 심도자술 및 관상동맥 조영술로 양측성 관상동맥-폐동맥루를 진단하였고 이들 중 한 환자에서는 좌전하행지 협착증, 다른 환자에서는 낭성 종양을 동반하였다. 이두 환자에 대해 수술적 교정을 시행하여 좋은 결과를 얻었기에 보고하는 바이다.

• Journal of Korean Biological Nursing Science
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• 제23권4호
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• pp.308-317
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• 2021

Purpose: The purpose of this study was to elucidate the relationship between readiness to quit smoking and smoking cessation, and identify factors associated with smoking cessation in smokers with ischemic heart disease post-coronary angiography (CAG). Methods: This descriptive study was conducted between December 1, 2020 and May 14, 2021 at a P hospital, Busan. A total of 164 subjects completed the questionnaire including general characteristics, coronary artery disease characteristics, readiness to quit smoking, and smoking cession behavior during hospitalization and 4 weeks after discharge. Results: The success rate of smoking cessation after coronary angiography in patients with ischemic heart disease was 49.4% (n = 81). In addition, 48.2% of smokers (n = 83) attempted smoking cessation after CAG, while 39.8% showed changes in smoking behavior. The readiness to quit smoking was significantly associated with smoking cessation (OR= 2.23, p< .005). Conclusion: Readiness to quit smoking was identified as an important factor associated with smoking cessation in patients with cardiovascular disease in this study. In order to increase the smoking cessation rate, it is necessary to strengthen the readiness to quit smoking, followed by a tailored program for smoking cessation in patients with ischemic heart disease.

• Journal of Chest Surgery
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• 제20권1호
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• pp.202-208
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• 1987

Congenital coronary artery fistula is a rare condition, and with widespread use of cardiac catheterization, angiography and selective coronary arteriography are being recognized with increasing frequency. Fistula originating from the right coronary artery are more common then those from the left coronary artery. The fistula empties into the right side of the heart in 90% of the cases with the right ventricle being the most common recipient chamber followed by the right atrium and the pulmonary artery. Recently we experienced two cases of congenital coronary artery fistula which originated from the left coronary artery each other. The first case was 17 moth-old-male, who have had the symptoms of frequent URI, dyspnea and continuous murmur in physical examination. The fistulous communication was noted between the left circumflex coronary artery and the right ventricle with aneurysmal dilation of RV wall. The proximal opening of the fistulous tract was directly close with partial aneurysmorrhaphy of RV wall. Also the termination site of fistulous tract in RV chamber was closed. The second case was 35-year-old female, who have had the symptom of exertional dyspnea and continuous murmur in physical examination. The tortuous and dilated fistulous tract was noted between the left anterior descending coronary artery and the pulmonary artery. The proximal opening of the fistula was ligated near the left anterior descending coronary artery with preservation of normal continuity of coronary artery. And the dilated tortuous vessel was excised. Also the terminal site in pulmonary artery was directly closed just above the pulmonic valve. Postoperative hospital courses of two patients were uneventful without any specific complications and discharged without problems.

• Korean Journal of Radiology
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• 제25권6호
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• pp.518-539
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• 2024

Coronary computed tomography angiography (CCTA) has emerged as a pivotal tool for diagnosing and risk-stratifying patients with suspected coronary artery disease (CAD). Recent advancements in image analysis and artificial intelligence (AI) techniques have enabled the comprehensive quantitative analysis of coronary atherosclerosis. Fully quantitative assessments of coronary stenosis and lumen attenuation have improved the accuracy of assessing stenosis severity and predicting hemodynamically significant lesions. In addition to stenosis evaluation, quantitative plaque analysis plays a crucial role in predicting and monitoring CAD progression. Studies have demonstrated that the quantitative assessment of plaque subtypes based on CT attenuation provides a nuanced understanding of plaque characteristics and their association with cardiovascular events. Quantitative analysis of serial CCTA scans offers a unique perspective on the impact of medical therapies on plaque modification. However, challenges such as time-intensive analyses and variability in software platforms still need to be addressed for broader clinical implementation. The paradigm of CCTA has shifted towards comprehensive quantitative plaque analysis facilitated by technological advancements. As these methods continue to evolve, their integration into routine clinical practice has the potential to enhance risk assessment and guide individualized patient management. This article reviews the evolving landscape of quantitative plaque analysis in CCTA and explores its applications and limitations.

• Journal of Chest Surgery
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• 제22권5호
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• pp.829-833
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• 1989

Congenital coronary arteriovenous fistula is relatively uncommon, but with widespread use of cardiac catheterization, angiography and selective coronary arteriography are being recognized with increasing frequency. Recently we experienced one case of congenital coronary artery fistula which originated from the right coronary artery. The case was 25 year-old-male, who complained of dyspnea on exertion and continuous murmur was heard, and diagnosed as right coronary artery fistula by the cardiac catheterization and aortography. On the operation field, the right coronary artery was markedly dilated from aorta to the middle segment at acute margin of the right ventricle, which the hen-egg sized aneurysm was noticed. The dilated coronary ostium and fistular site were obliterated with several horizontal mattress sutures. And the dilated tortuous right coronary artery with aneurysm was excised. Postoperative course was uneventful and discharged without problem.

• 대한방사선협회지
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• 제27권2호
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• pp.175-180
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• 2001

Ⅰ. Background and Objectives : Recently the percutaneous transradial approach for coronary angiography and angioplasty has been using. When the radial artery as a graft for coronary artery bypass surgery was used, pantency increased. Many examination and

• Korean Journal of Radiology
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• 제22권11호
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• pp.1749-1763
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• 2021

Coronary computed tomography angiography (CCTA) is routinely used for anatomical assessment of coronary artery disease (CAD). However, invasive measurement of fractional flow reserve (FFR) is the current gold standard for the diagnosis of hemodynamically significant CAD. CT-derived FFRCT and CT perfusion are two emerging techniques that can provide a functional assessment of CAD for risk stratification and clinical decision making. Several clinical studies have shown that the diagnostic performance of concomitant CCTA and functional CT assessment for detecting hemodynamically significant CAD is at least non-inferior to that of other routinely used imaging modalities. This article aims to review the current clinical evidence and recent developments in functional CT techniques.

• Journal of Information Processing Systems
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• 제12권1호
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• pp.129-148
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• 2016

Acute myocardial infarction (AMI) is one of the three emergency diseases that require urgent diagnosis and treatment in the golden hour. It is important to identify the status of the coronary artery in AMI due to the nature of disease. Therefore, multi-modal medical images, which can effectively show the status of the coronary artery, have been widely used to diagnose AMI. However, the legacy system has provided multi-modal medical images with flat and unstructured data. It has a lack of semantic information between multi-modal images, which are distributed and stored individually. If we can see the status of the coronary artery all at once by integrating the core information extracted from multi-modal medical images, the time for diagnosis and treatment will be reduced. In this paper, we analyze semantic relations between multi-modal medical images based on coronary anatomy for AMI. First, we selected a coronary arteriogram, coronary angiography, and echocardiography as the representative medical images for AMI and extracted semantic features from them, respectively. We then analyzed the semantic relations between them and defined the convergence data model for AMI. As a result, we show that the data model can present core information from multi-modal medical images and enable to diagnose through the united view of AMI intuitively.