A study on the service robot with emotion monitoring capability

학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2001.2, [ v, 65 p. ]한국과학기술원 : 전기및전자공학전공

3D position recognition through hand pointing command

이 발명은 두 대의 카메라를 이용하여 3차원 공간에서 사용자의 손 지시로부터 해당 3차원 위치를 인식하는 시스템 및 방법에 관한 것이다.이 발명에 따른 손 지시의 3차원 위치 인식 시스템은, 2대의 카메라로부터 영상을 획득하는 영상획득부와, 상기 2대의 카메라간 상관정보를 저장하는 카메라상관정보DB와, 상기 영상획득부에서 획득된 영상과 상기 2대의 카메라간 상관정보를 이용하여 사용자가 손으로 지시하는 3차원 위치를 인식하는 중앙처리부와, 상기 인식된 결과를 표시하는 표시부를 포함한다

Functional Coronary Angiography? Derived Index of Microcirculatory Resistance in Patients With ST-Segment Elevation Myocardial Infarction

OBJECTIVES The aim of this study was to evaluate the diagnostic accuracy and prognostic implications of angiographyderived index of microcirculatory resistance (angio-IMR) in patients with ST-segment elevation myocardial infarction (STEMI). BACKGROUND The index of microcirculatory resistance (IMR) is a reliable invasive measure of coronary microvascular dysfunction in patients with STEMI. A functional coronary angiography?derived method to estimate IMR is a wire- and hyperemic agent?free alternative to IMR. METHODS The study population consisted of 2 independent cohorts. The diagnostic cohort comprised patients with IMR from the culprit vessel immediately after successful primary percutaneous coronary intervention (n ¼ 31). The prognostic cohort was patients with STEMI who were successfully treated with primary percutaneous coronary intervention and followed for 10 years from the index procedure (n ¼ 309). Angio-IMR was calculated using computational flow and pressure simulation. The primary outcome was a composite of cardiac death and readmission for heart failure over 10 years of follow-up. RESULTS In the diagnostic cohort, angio-IMR correlated well with IMR (R ¼ 0.778; P < 0.001). Sensitivity, specificity, accuracy, and area under the curve of angio-IMR to predict IMR >40 U were 75.0%, 84.2%, 80.6%, and 0.899 (95% confidence interval: 0.786-0.949), respectively. In the prognostic cohort, patients with angio-IMR >40 U showed significantly higher risk for cardiac death or readmission for heart failure than did those with angio-IMR #40 U (46.7% vs 16.6%; adjusted hazard ratio: 2.909; 95% CI: 1.670-5.067; P < 0.001). Angio-IMR >40 U was an independent predictor of cardiac death or readmission for heart failure (hazard ratio: 2.173; 95% CI: 1.157-4.079; P ¼ 0.016) and showed incremental prognostic value compared with a model with clinical risk factors only (C index ¼ 0.726 vs 0.666 [P < 0.001], net reclassification index ¼ 0.704 [P < 0.001]). CONCLUSIONS Angio-IMR showed high correlation and diagnostic accuracy to predict IMR. Patients with STEMI with angio-IMR >40 U showed a significantly higher risk for cardiac death or readmission for heart failure than those with preserved angio-IMR values. (Prognostic Implication of Angiography-Derived IMR in STEMI Patients; NCT04628377) (J Am Coll Cardiol Intv 2021;14:1670?84) ⓒ 2021 by the American College of Cardiology Foundation