Lecture

Diagnostic X-ray Imaging

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Description

This lecture provides a comprehensive overview of diagnostic X-ray imaging, covering the history, technology, processes, and global challenges associated with this essential medical modality. It explains the principles of X-ray generation, image recording techniques, and the transition from analog film screens to digital solutions. The importance of X-ray radiology in healthcare, particularly in diagnosing trauma and pulmonary conditions, is highlighted. The lecture also addresses the significant global disparity in access to radiology services, discussing the challenges faced by low and middle income countries in implementing and maintaining X-ray systems. It concludes by exploring potential sustainable solutions to improve radiology services worldwide.

In MOOC

Technology Innovation for Sustainable Development

Technology innovation can be a great enabler for development in low and middle-income countries. This course presents a methodology and an approach to develop impactful innovations that have the power to foster sustainable development. Whether you are from an industrialized or a developing country, whether you are employed in a company, an NGO, an international organization or a government. Whether you are an academic, an independent entrepreneur, or simply a passionate individual, this course is for you.

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Related concepts (16)

Radiography

Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an object. Applications of radiography include medical radiography ("diagnostic" and "therapeutic") and industrial radiography. Similar techniques are used in airport security (where "body scanners" generally use backscatter X-ray). To create an image in conventional radiography, a beam of X-rays is produced by an X-ray generator and is projected toward the object.

X-ray

X-ray radiation, or, much less commonly, X-radiation, is a penetrating form of high-energy electromagnetic radiation. Most X-rays have a wavelength ranging from 10 nanometers to 10 picometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3e16Hz to 3e19Hz) and energies in the range 124 keV to 145 eV, respectively. X-ray wavelengths are shorter than those of UV rays and typically longer than those of gamma rays.

X-ray image intensifier

An X-ray image intensifier (XRII) is an that converts X-rays into visible light at higher intensity than the more traditional fluorescent screens can. Such intensifiers are used in X-ray imaging systems (such as fluoroscopes) to allow low-intensity X-rays to be converted to a conveniently bright visible light output. The device contains a low absorbency/scatter input window, typically aluminum, input fluorescent screen, photocathode, electron optics, output fluorescent screen and output window.

X-ray generator

An X-ray generator is a device that produces X-rays. Together with an X-ray detector, it is commonly used in a variety of applications including medicine, X-ray fluorescence, electronic assembly inspection, and measurement of material thickness in manufacturing operations. In medical applications, X-ray generators are used by radiographers to acquire x-ray images of the internal structures (e.g., bones) of living organisms, and also in sterilization. An X-ray generator generally contains an X-ray tube to produce the X-rays.

Health technology

Health technology is defined by the World Health Organization as the "application of organized knowledge and skills in the form of devices, medicines, vaccines, procedures, and systems developed to solve a health problem and improve quality of lives". This includes pharmaceuticals, devices, procedures, and organizational systems used in the healthcare industry, as well as computer-supported information systems. In the United States, these technologies involve standardized physical objects, as well as traditional and designed social means and methods to treat or care for patients.

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