3 new ways technology is helping to advance medicine

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…

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Ultrasound wave propagation and parameters

Ultrasound waves are acoustic pressure waves that interact with propagation media. Ultrasound visualization normally is based on wave reflectance from regions with different acoustic properties. When wave meets different acoustic media, part of it transmits further while other reflects. This happens due to different acoustic impedance. The ration between reflected and transmitted energy purely depends on difference of 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.

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Using wavelet transform in biomedical engineering – heart signal analysis

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…

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Automation In The Medical Field

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…

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Working In Medicine (Without Being A Nurse)

Many people who want to jump into the healthcare profession are not particularly interested in the field of 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 training involved and the high demand. Here are some job ideas for smart folks who don’t necessarily care for a traditional job as a nurse or a doctor: Healthcare administration Hospitals and clinics still require office managers, who make vital decisions on how to allocate funds…

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Use of Tactile Sensing in Biomedical Engineering

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.

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Artificial Cornea Implants – donors of the future

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…

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