An overview of radiation dosimetry will be given with emphasis on dosimetry principles and calibration methods in order to maintain measurement traceability. The importance of estimating measurement uncertainty is discussed, including how uncertainty can be applied to the radiation process, and to assess new product process capability for new products. An introduction to the mathematical model is also given with emphasis on how it can be used to complement radiation dosimetry, and assist with the validation of an irradiator change.

An increase in the incidence of vascular disorders, blockage of blood vessels, and high blood sugar has led to a rise in usage of vascular grafts for treatment. Researchers worldwide have been conducting research and development activities to identify innovative solutions. From the effect of Medicare on a new bioengineered blood vessel, they have been determining how vascular grafts can be utilized to help patients with vascular trauma. These activities have led to a boom in the industry. According to Allied Market Research, the global vascular graft market is expected to reach $6.21 billion by 2023. Following are some of the research activities conducted that will shape the industry in coming years.

Researchers have discovered that radio frequency probes with structures inspired by microstrip patch antennas increase MRI resolution in high-frequency MRI machines, when compared to conventional surface coils used now.

The design is relatively simple: MPAs are made of a flat piece of metal grounded by a larger piece of metal. MPAs are an alternative where waves oscillate in the cavity formed between the patch and ground plane electrodes, which are accompanied by currents in the patch electrode and, respectively, oscillating magnetic fields around the patch, providing a magnetic field that is both even and strong.

Researchers have developed a contactless method for measuring blood flow in the upper limbs. The method is based on video recording of the skin surface under green light measuring the absorption of red blood cells.

The experimental results showed that the proposed method is as accurate as the traditional one. However, it is easier in use, cheaper, and fits more patients. Measuring blood flow in the limbs is an important diagnostic indicator. By studying how efficient is the heart in supplying blood to the limbs, we can see whether the cardiovascular system works properly, and evaluate parameters of the blood flow regulation. Currently, the researchers usually use contact (or tensiometric) methods of occlusive plethysmography to measure the blood flow in the limbs. Such an approach is based on recording the changes in the volume or diameter of a limb due to its filling with blood during venous occlusion.

A new wireless, Band-Aid-like sensor could revolutionize the way patients manage hydrocephalus and potentially save the U.S. health care system millions of dollars. A Northwestern Medicine clinical study successfully tested the device, known as a wearable shunt monitor, on five adult patients with hydrocephalus.

The new sensor allowed patients in the study to determine within five minutes of placing it on their skin if fluid was flowing through their shunt. The soft and flexible sensor uses measurements of temperature and heat transfer to non-invasively tell if and how much fluid is flowing through.

According to new research, silk combined with carbon nanotubes may lead to a new generation of biomedical devices and so-called transient, biodegradable electronics.

Regenerated silk fibroins (RSFs) typically are chemically unstable in water and suffer from inferior mechanical properties, owing to the difficulty in precisely controlling the molecular structure of the fibroin proteins in RSF films. The group, which also work extensively on carbon nanotubes (CNTs), thought that perhaps the molecular interactions between nanotubes and fibroins could enable “tuning” the structure of RSF proteins.

This webinar is focused on catheter shaft componentry with a deeper dive into polytetrafluoroethylene (PTFE) liners and fluorinated ethylene propylene (FEP). Information provided will contain a mix of polymer material science, specifications of extruded fluoropolymers, engineering considerations for fluoropolymer use and processing of those. We will also cover new developments for PTFE as well as FEP heat shrink including the ultrathin (less than .001” wall thickness) extruded liners and peelable heat shrink.

With a 2020 deadline looming for the European Union’s Medical Device Regulation (MDR), medical device makers “lack understanding of the new rules that govern the ability to sell products in one of the world’s largest markets,” according to a survey by KPMG and the Regulatory Affairs Pro­fessionals Society (RAPS).

The field of plant science is in the process of being profoundly transformed by new imaging and modeling technologies. These tools are allowing scientists to peer inside the leaf with a clarity and resolution inconceivable a generation ago.

Researchers in Sweden using computed tomography (CT) have successfully imaged the soft tissue of an ancient Egyptian mummy's hand down to a microscopic level. Non-destructive imaging of human and animal mummies with X-rays and CT is a boon to the fields of archaeology and paleopathology. They provide a better knowledge of life and death in ancient times and have the potential to improve the understanding of modern diseases.