Assessment of Left Ventricular Pressure—Volume Relationships Using an Automatic Computerized Videodensitometric Approach

摘要: A detailed analysis of ventricular pump function in systole and diastole requires the reconstruction pressure—volume relationship. Computerized on-line processing pressure data is a routine procedure many laboratories today, whereas assessment volume throughout entire cardiac cycle tedious time-consuming procedure. Even case computer assistance, silhouettes have to be outlined manually frame-by-frame, since reliable method for an automatic border recognition not at hand despite all efforts that been undertaken last decade. Furthermore, technical problems such as low concentration contrast medium premature beats render this type often impossible clinical situation.