BME_501_Chp_1_Cardiovascular_Systems

BME_501_Chp_1_Cardiovascular_Systems - Cardiovascular...

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Cardiovascular System BME 501 T. K. Hsiai, MD, PhD, FACC Department of Biomedical Engineering and Division of Cardiovascular Medicine School of Engineering and School of Medicine
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Topics for BME 501 Coronary circulaiton system leukocytes Red blood cells Neutrophil
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Diagnostic modalities Chest X-Ray ECG/EKG (electrocardiogram)
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Echocardiography is the process of mapping the heart through echoes. The pulses are sent into the chest and the high-frequency sound waves bounce off of the heart's walls and valves. The returning echoes are electronically plotted to produce a picture of the heart called an echocardiogram. Echocardiogram
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Cardiovascular MRI Cardiac Magnetic Resonance Imaging (MRI) is a medical diagnostic technique that utilizes radio waves and a strong magnetic field to create images of the heart without the use of X-rays MRI is a versatile, powerful and sensitive tool that can generate multi-planar images of the heart. This enables the structure and function of the heart to be studied. Using MRI, movie-like images of the beating heart can be used to diagnose a variety of cardiovascular problems including whether the blood flow is blocked, or whether the heart muscles are damaged. As MRI is used in this procedure, it is a completely non-invasive procedure and there are no known side or after effects. The procedure is also painless.
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Ultra Fast Computed Tomography (CT) Computed tomography (CT or CAT scan) is a diagnostic imaging procedure that uses a combination of x-rays and computer technology to produce cross-sectional images (often called slices), both horizontally and vertically, of the body. In standard x-rays, a beam of energy is aimed at the part of the body being studied. A plate behind the body part captures the variations of the energy beam after it passes through skin, bone, muscle, and other tissue. Ultrafast CT scans can take multiple images of the heart within the time of a single heartbeat, thus providing much more detail about the heart's function and structures, and also greatly decreasing the amount of time required for a study.
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Ultrafast Radiation Detector for CT Scanning For nearly twenty-five years computed tomography (CT) has been used as a sectional X-ray imaging procedure for analyzing transaxial slices in the human body. In this procedure a fan beam is collimated from the radiation cone emitted by the X-ray tube, thus permeating a thin slice of the examined area. During the scan a high-performance X-ray tube revolves around the patient and an associated X-ray detector in linear array measures the attenuated radiation through the object being examined. A computer converts these signals into attenuation values relative to a reference attenuation object (water) and displays them as a gray scale image.
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External Defibrillator
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Defibrillator Pacemakers Implantable
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Intra-aortic balloon pump (IABP) an intra-aortic balloon pump can be used to decrease afterload and increase myocardial blood flow. The balloon is inflated during diastole in sync with the
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This note was uploaded on 02/27/2008 for the course BME 501 taught by Professor Yamashiro,hsiai during the Fall '07 term at USC.

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BME_501_Chp_1_Cardiovascular_Systems - Cardiovascular...

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