Tag Archives: Heart

Biomedical Project Ideas: Visualization tool for Myocardial Strain Tensors

The heart is a complex three-dimensional structure with mechanical properties that are inhomogeneous, non-linear, time-variant and anisotropic. These properties affect major physiological factors within the heart, such as the pumping performance of the ventricles, the oxygen demand in the tissue and the distribution of coronary blood flow.

During the cardiac cycle the heart muscle tissue is deformed as a consequence of the active contraction of the muscle fibers and their relaxation respectively. A mapping of this deformation would give increased understanding of the mechanical properties of the heart. The deformation induces strain and stress in the tissue which are both mechanical properties and can be described with a mathematical tensor object.

A Graphical Simulation Software in Cardiovascular Mechanics Physiology

A short axis view of the heart showing a cine ...
Image via Wikipedia

Computer supported, interactive e-learning systems are widely used in the teaching of physiology. However, the currently available complimentary software tools in the field of the physiology of cardiovascular mechanics have not yet been adapted to the latest systems software. Therefore, a simple-to-use replacement for undergraduate and graduate students‘ education was needed, including an up-to-date graphical software that is validated and field-tested.

Software compatible to Windows, based on modified versions of existing mathematical algorithms, has been newly developed. Testing was performed during a full term of physiological lecturing to medical and biology students.


EASY ECG- powerpoint presentations

“The ECG learning modules are designed to help you learn how to look at ECG rhythm strips and interpret them. Is the strip the normal rhythm of the heart — normal sinus rhythm? Or an abnormal and potential dangerous rhythm like ventricular fibrillation? You will also be introduced to the 12-lead ECG and learn how to look for signs of an acute myocardial infarction” – UCSF SCHOOL OF MEDICINE

Atrial fibrillation detection by heart rate variability in Poincare plot


Atrial fibrillation (AFib) is one of the prominent causes of stroke, and its risk increases with age. We need to detect AFib correctly as early as possible to avoid medical disaster because it is likely to proceed into a more serious form in short time. If we can make a portable AFib monitoring system, it will be helpful to many old people because we cannot predict when a patient will have a spasm of AFib.

The Fourth Heart Sound- Eric S. Williams

Base and diaphragmatic surface of heart.

Image via Wikipedia


The fourth heart sound is a low-pitched sound coincident with late diastolic filling of the ventricle due to atrial contraction. It thus occurs shortly before the first heart sound. Although it is also called the atrial sound, and its production requires an effective atrial contraction, the fourth heart sound is the result of vibrations generated within the ventricle. Commonly, its presence indicates increased resistance to filling of the left or right ventricle because of a reduction in ventricular wall compliance, and it is accompanied by a disproportionate rise in ventricular end-diastolic pressure. In patients with a fourth heart sound, its palpable correlate is often present: a concomitant brief presystolic outward movement of the chest wall.