What is medical research? Medical research can be described as any research conducted with the aim of supporting and furthering the development of medical knowledge. In recent years, medical research has directly resulted in the emergence of countless new treatments and vaccines and has helped to increase scientists’ understanding of the workings of the human body and the mechanisms of diseases.
There is no doubt that as everything else is evolving with new technology, medicine is too. The issue is that in the US, our medical system is broken and the insurance companies are too rigid. Doctors and other medical personnel have managed to work even with these difficulties and still provide patient care that is excellent along with new techniques that are successful. With the advance of biomedical research, doctors will be able to better tackle health issues in ways that are cost effective. Automation is only one area where there is new technology coming to the fore. Because of this advancement, linear actuators are being used more often as opposed to hydraulic and pneumatic systems. They range in size from very small to very large ones. Aside from the changes that technology has seen, there are quite a few other reasons that have made these actuators necessary, such as the ever growing need for power assisted seating and motorized wheelchairs.
Imaging Cameras improving cancer surgery Every year, 14 million people are diagnosed with cancer; of those, around eight million will die. Cancer is one of the leading causes of death worldwide; across the globe, doctors and scientists are fighting to reduce the number of cancer deaths by detecting cancer early and promoting new ways of battling it. In the past, imaging technologies such as radiography, magnetic resonance imaging and computed tomography have proved vital in the fight against cancer, helping doctors to diagnose the disease quickly to increase the chance of recovery. Now, near-infrared fluorescence (NRF) has emerged as a new, powerful imaging tool in the battle against cancer. NRF imaging is used during surgery to enable surgeons to easily distinguish between healthy tissue and cancerous tissue. Surgery is a highly effective method of treating cancer patients, but its success rate depends largely on how much of the cancer is removed; if cancer cells remain in the body after surgery, the surgery’s success rate is greatly diminished. Advocates of NRF hope the technique will give surgeons greater visibility of cancer margins and thereby increase their ability to precisely remove cancerous tissue. Companies such as andor.com are researching how we can…
Ultrasound waves are acoustic pressure waves that interact with propagation media. Ultrasound visualization is typically based on wave reflectance from regions with different acoustic properties. When a wave meets different acoustic media, part of it transmits further while others reflect. This happens due to different acoustic impedance. The ration between reflected and transmitted energy purely depends on the difference in acoustic impedance in both regions. As you can see each material can be characterized by its acoustic impedance Z which is equal to ultrasound speed v and material density r.
As we mentioned before, wavelet transform is used to analyze short time and non-stationary signals. Since base wavelet function has to parameters – translation and scaling, it is possible to achieve good time and frequency localization. In other words, we can equally analyze slow signal and fast signal structures without losing resolution and so evaluate signal frequency characteristics and time dynamics. Heart signal analysis is one of the most common problem in biomedical engineering. Practically every part of ECG signal carries some sort of information about heart condition, possible pathologies, and deceases. So equally frequency and timing characteristics of ECG signal is important. As you know standard ECG signal consists of several typical waveforms like P-QRS-T where in P and T waves low frequency component dominates and in QRS mid and high. The common condition of hear is myocardial ischemia when blood flow through coronary arteries to heart is reduced what prevents receiving enough oxygen. This can damage heart muscle and lead to heart attack. In order to notice this pathology it is we need to analyze S-T segment of ECG waveform. Insignificant changes in signal can indicate ischemia. In order to find the variations in signal it is needed…
The advancement in technology and medical automation has led to the increased use of linear actuators in the medical field that have continued to render the use of pneumatic and hydraulic systems obsolete. The use of actuators will vary depending on their sizes that range from the tiny ones (2” strokes) to the large ones (24” stokes). Other than changes in technology, several other contributing factors have necessitated the increased usage of actuators in the health sector. Key reasons for the increased usage of actuators in the medical field First, the size of a machine is a factor to consider when deciding the technology to use. Actuators are appealing in size especially when compared to hydraulics that can yield a similar amount of strength. Secondly, when in action actuators produce less noise as compared to pneumatic and hydraulic solutions. The hiss and gurgle sounds found in pneumatics and hydraulics do not exist in actuators that have triggered their continued use. The photo below is a sample of actuators wheelchair. Another positive factor that has contributed towards the use of actuators is that they are precise. Pneumatic pistons can be positioned correctly at either full extension or retraction. Lastly, actuators…
Many people who want to jump into the healthcare profession are not particularly interested in nursing, where the work can be backbreaking, very dramatic or very dull. It can also involve internal medicine, which may not be your cup of tea. So, what do you do? If you’re looking for rewarding work, but don’t really care for the sight of blood or have worries about the heavy lifting involved in nursing, try these technical job ideas out for size. After all, income levels for peripheral healthcare technicians, such as radiation therapist or sonogram technician, are holding up well, because of the high demand training. Here are some job ideas for smart folks who don’t necessarily care for a traditional job as a nurse or a doctor:
While tactile sensors were heralded in the late 1980s as the major development of the coming decade, there was a downward trend that followed. However, with advancement in robotics and computing, tactile sensing has made a comeback. A tactile sensor is basically able to detect changes in parameters like shape, texture, temperature, vibration, shear/normal forces and touch. One of the important modern usages of tactile sensing is in the domain of biomedical applications and systems for unstructured environments. Many times a current sensor is relied on for such a project and these sensors are later adjusted as per the system requirement.
The cornea is the clear protective layer covering the eye. Injuries and diseases affecting the cornea might lead to adverse eye problems like blurred visions. The cornea is responsible for filtering out ultraviolet rays that comes from the sun. However, with the advancement in medical technologies and the constant efforts of scientists through research, corneal diseases can be treated. The artificial corneal implants are the most recent of the treatments. Artificial corneal implants proved to be beneficial because: it caters for the huge number of people who are waiting for corneal transplants and operations for instance Europe has a waiting list of over 40000 people and a worldwide list of 10 million. They are also biocompatible ensuring that there are no complications when in contact with the eye surface. In cases where traditional corneal transplants (also referred as corneal grafts) have failed to work, artificial cornea can be used. The risk of getting diseases from donors is also reduced. It prevents astigmatism and enhances rapid visual recovery. Additionally, they are useful to patients who have not qualified to get living cornea donors.
Brain scan and mind reading of the part of the brain responsible for memory have been used to detect a person’s location in the virtual environment. This enables the location of individuals as they navigate through the virtual rooms. These are used to discern what someone was doing, where they are or were and where they are planning to go. This shows that detailed mind reading will be possible with the advancing technology and research. The hippocampus underpins the ability of a person’s mind to navigate, form, recollect memories and imagine future experiences. The mind reading and scanning is done by using multivariate pattern classification and high resolution functional MRI to decode activities across the population of neurons in the human medial temporal lobe while the participants navigate in a virtual reality environment. The position of an individual can be predicted accurately even when the visual input and task are held constant. Reading precise locations or other types of memory is difficult because fMRI (functional magnetic resonance imaging) resolves the activity of thousands of neurons at a time.