Radiation therapy in combination with other methods is the most common cancer. However, its use requires particular precision in terms of dosage and effect on the affected tumor. In this case, healthy tissues can be damaged.
The Joint Emergency Group of the University of Singapore, Tsinghua University and the Shenzhen Institute of Advanced Technology, led by Professor Liu Xiaogang, proposed an innovative method for monitoring the amount of dose reached and absorbed by the tissues of the gastrointestinal tract using a capsule dosimeter in the time range.
Currently used dosimeters, which are attached to a large number of patients, have a number of disadvantages. In particular, they absorb part of the observation that the measured radiation dose, moreover, they are quite significant. In turn, the capabilities of ingested sensors limit the control of pH (acidity level) and pressure.
The X-ray dosimeter, observed under the impression of Professor Liu Xiaogang, is a capsule that is located near the gastrointestinal tract in the way of swallowing. While inside, it records the observation dose, pH level and temperature during the on-line radiation therapy session.
The composition of capsules measuring 18 x 7 mm (length, width) includes flexible optical fibers that enter the nanoscintillators (scintigraphy is a method based on the introduction of radioactive isotopes into the body and obtaining a two-dimensional image – ed. TechCult.ru), which begin to glow from the photograph emitted by them, sensitive to the film and the liquid module for the collection of female plugs.
The capsule also has two sensors that measure concentration and pH, a microcontroller circuit board for processing photoelectric signals received by the mobile application via Bluetooth, and a power source – a silver oxide battery.
At present, they are discovering their know-how in practice, in particular, in brachytherapy (contact effect on the tumor by detecting a radionuclide source in the tumor). The price of one capsule is $5.
Source: Tech Cult
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