Coronary CT angiography
Coronary Stent on Coronary CT Angiography: Assessment with Model-Based Iterative Reconstruction Technique
... undergo coronary artery stent implantation in their ...(1). Coronary CT angiography (CCTA) has been used for this purpose, and the evaluation of larger (≥ 3 mm) coronary ar- tery stents ...
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Coronary Stent on Coronary CT Angiography: Assessment with Model-Based Iterative Reconstruction Technique
... on Coronary CT Angiography: Assessment with Model-Based Iterative Reconstruction Technique 모델기반 반복재구성법을 이용한 관상동맥 스텐트의 컴퓨터단층촬영 평가 Eunchae Lee, MD, Yeo Koon Kim, MD, Eun Ju Chun, MD, Sang Il Choi, ...
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Automatic aortic valve landmark localization in coronary CT angiography using colonial walk
... enhanced coronary CT angiography (CCTA) is used as the imaging technique to acquire 3- D measurements of the ...in CT images plays a vital role in the TAVI workflow because a small error risks ...
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Usefulness of baseline statin therapy in nonobstructive coronary artery disease by coronary computed tomographic angiography: From the CONFIRM (Coronary CT Angiography EvaluatioN For Clinical Outcomes: An InteRnational Multicenter) study
... of CT angiography in patients with inconclusive functional stress ...with coronary artery disease detected by 64-slice or greater coronary CT angiography: a system- atic review ...
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Unusual Coronary Artery Fistula: Left Anterior Descending Coronary Artery - Left Ventricular Fistula Diagnosed by ECG-Gated Multi-Detector Row Coronary CT Angiography
... cases, coronary arteries empty into the right chambers and left coronary artery-left ventricular fistula is a very rare ...ing coronary artery-left ventricular fistula in a 67-year-old man, which was ...
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Protocol Optimization of Coronary CT Angiography
... 급속한 CT 기술의 발달과 이를 이용한 진단 방법이 새롭게 대두하고 있어 심장질환에서 최 근 각광을 받는 다절편 CT(multi-detector CT, 이하 MDCT)를 이용하여 비침습적 진단의 영역을 넓혔으며, MDCT가 발전하면서 검출기 숫자가 증가하고 X-선관 의 회전시간이 짧아짐에 따라 시간 분해능이 향상되 어 보다 우수한 심장 영상화가 가능해지고 ...
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Calcified Plaque of Coronary Artery: Factors Influencing Overestimation of Coronary Artery Stenosis on Coronary CT Angiography
... 부분용적효과 혹은 인공물은 불균질한 성분을 갖는 voxel의 평균 수치에 상응하는 화소를 정하므로 평균 감쇠 계수 값을 보이며 이는 공간분해능을 제한한다. 특히 Hounsfield 값이 크게 차이 나는 구조물이나 조직의 경계부위에 존재한다. 또 한, 심한 석회화나 스텐트가 부분용적효과 때문에 커져 보이는 것을 팽창 인공물(blooming artifact) 이라고 하며 인접한 관 상동맥 내강을 ...
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Plaque Characteristics on Coronary CT Angiography: Effects on the Degree of Coronary Artery Stenosis
... 관상동맥 CT 혈관촬영술 프로토콜 모든 환자에서 CT를 시행하기 1시간 전에 베타차단제인 propranolol(Pranol, Daewoong, Korea) 20 mg을 경구 투 여하였고, 1시간 후 심박동 수가 계속해서 분당 65회 이상으로 측정되면 20 mg을 추가로 투여한 후 ...
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Coexistent Coronary Artery Disease or Myocardial Bridging in Patients with Hypertrophic Cardiomyopathy Using Coronary CT Angiography
... After making independent evaluations, a consensus interpreta- tion was achieved to obtain a final CCTA diagnosis. The con- trast-enhanced portion of the coronary lumen was semi-auto- matically traced at the ...
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Future Directions in Coronary CT Angiography: CT-Fractional Flow Reserve, Plaque Vulnerability, and Quantitative Plaque Assessment
... as CT-FFR, have been recently translated into clinical practice, and hold the promise to provide a more specific way to determine which patients should undergo ...
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Diagnostic value of coronary CT angiography in comparison with invasive coronary angiography and intravascular ultrasound in patients with intermediate coronary artery stenosis: results from the prospective multicentre FIGURE-OUT (Functional Imaging criteria for GUiding REview of invasive coronary angiOgraphy, intravascular Ultrasound, and coronary computed Tomographic angiography) study
... underestimation between CCTA and ICA/IVUS parameters in studies by Kristensen et al. 7 and by Caussin et al. 6 In contrast, Boogers et al. 10 recently reported that CCTA MLA was smaller than IVUS MLA (3.6 vs. 6.4 mm 2 ). ...
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Coronary Artery Axial Plaque Stress and its Relationship With Lesion Geometry: Application of Computational Fluid Dynamics to Coronary CT Angiography
... why coronary plaque ruptures may occur in both upstream and downstream segments, and why plaques may rupture in short focal lesions as well as diffuse ...with coronary artery ...
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Coronary CT Angiography: Focus on a New Algorithm as Diagnostic Tool in Routine Clinical Practice
... 인다(25-28). 심장 기능 평가 관상동맥 CT 혈관조영술은 추가적인 검사를 하지 않고도 심 장 용적 및 기능에 대한 정보를 제공한다. 이면성 심초음파와 다르게 용적의 측정에서, 연속적인 영상 단면의 심실을 모두 측정하기 때문에 매우 정확하며 재현성이 높다. 그러나 이를 위한 별도의 소프트웨어가 필요하며, 추가로 많은 영상을 재구 성해야 하므로 많은 시간과 인력이 소모된다. ...
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C The Impact of Warmed IntravenousContrast Material on the Bolus Geometryof Coronary CT Angiography Applications
... the coronary arteries (except for the middle segment of the LAD) was found to be increased in the patient group that had received warmed CM, but the difference between the two groups was statistically ...
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Development and Validation of Generalized Linear Regression Models to Predict Vessel Enhancement on Coronary CT Angiography
... Objective: We evaluated the effect of various patient characteristics and time-density curve (TDC)-factors on the test bolus-affected vessel enhancement on coronary computed tomography angiography (CCTA). ...
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Image Quality and Radiation Exposure in Coronary CT Angiography According to Tube Voltage and Body Mass Index
... 촬영한 CT 관상동맥 조영술 간에 영상 질에 차이가 없었다고 하였으며 조 영 증강 정도와 영상 잡음이 100 kVp로 촬영한 군에서 유의하 게 높았지만 신호 대 잡음 비나 조영 증강 대 잡음 비는 유의한 차이가 없었다고 ...따른 CT 프로토콜의 변화를 통 해 방사선 피폭량을 최소한도로 줄이면서 영상의 질을 저하하 지 않는 최적의 프로토콜을 찾기 위한 연구가 계속되고 ...
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Variation of the Degree of Coronary Artery Stenosis during the Cardiac Cycle: Influence of Heart Rate or Calcium Score on Coronary CT Angiography
... 중 CT 관상동맥조영술과 침습적 관상동맥조영술을 모두 시행한 27명의 환자 를 대상으로 하였다. CT 관상동맥조영술에서 협착된 동맥의 수축기와 이완 말기에서의 관상동맥 직경의 백분율 변화를 측정한 후 심장박동수 또는 Agatston 점수와의 관련성을 단순선형회귀분석을 이용하여 ...
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Assessment of the Image Quality and Diagnostic Accuracy of Coronary CT Angiography: Effect of Sublingual Administration of Nitroglycerin
... 질산염은 혈관내피세포 유무에 관계없이 혈관 평활근을 직 접 이완시키는 내피세포 비의존성 혈관확장제이다(19). 질산 염은 관상동맥의 확장과 경련의 해소에 따른 관동맥 혈류공급 의 증가, 좌심실충만압의 감소와 관동맥 측부혈관의 개통에 의 한 관동맥혈류 분포의 개선, 정맥의 환류 감소에 의한 전부하 감소와 동맥압 저하에 따른 후부하의 감소를 통해 심근 산소 요구량을 줄이는 효과가 있어 협심증의 ...
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Evaluation of Localized Aortic Dissection at Sinus of Valsalva by Coronary CT Angiography with Multiplanar Reformation: A Case Report
... and he was discharged on the 63rd day. DISCUSSION Aortic dissection can occur when the intimomedial layer of the aortic wall is torn by trauma, iatrogenic manipulation, or in- flammation. Dissection of aortic wall layers ...
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Diagnosis of Incidental Coronary-to-Bronchial Artery Fistula with CT Angiography: A Case Report
... largest coronary cineangiography series conducted to date by Matsunaga et ...selective coronary cinean- giography during a 10 year at one ...aortic CT angiography and diag- nosed by ...
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