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Film is first manufactured
Film is first manufactured in 1889. -
Discovery of X-Ray
Discovery of X-rays by German Professor Wilhelm Conrad Roentgen. -
X-ray for Medical Use
Dr. Francis Henry Williams used x-rays for medical diagnosis, including the use of fluoroscopy to study blood vessels. -
Contrast Medium
Contrast medium was first administered orally and injected vascularly between 1906 and 1912. This allowed doctors to svisualize blood vessels, digestive and gastro-intestinal systems, bile ducts and gall bladder for the first time. -
First Use of Contrast Medium
Dr. Carlos Heuser was the first to use a contrast medium in a human circulatory system. -
American Board of Radiology
The American Board of Radiology is officially formed and recognized by the American Medical Association. -
Period: to
Technology matured from analog election valves to digital switches
Technology matured from analog election valves to digital switches, This is the beginning of the transition to digital imaging. -
Nuclear Medicine
Widespread use of radionuclide scanning was first done in the 1950s using gamma cameras. Nuclear medicine studies use low levels radioactive chemicals that are taken up by the organs in the body and emit faint radiation signals. These signals are detected by the gamma camera. -
Society of Nuclear Medicine and Molecular Imaging
The Society of Nuclear Medicine and Molecular Imaging was founded in 1954 in Spokane, WA. This organization promotes the science, common technology and practical application of nuclear medicine and molecular imaging. -
Image Intensifier was developed
The X-ray image intensifier (I.I.) was developed and allowed the pick up and display of the x-ray movie using a TV camera and monitor. -
Ultrasound Imaging
Ian Donald repurposed ultrasound for imaging uses rather than research, as was done in the past. A transducer is placed against the skin near the area of interest and produces inaudible, high frequency sound waves that penetrate into the body and bounce off the organs inside. The transducer detects sound waves as they bounce back from the internal structures and contours of the organs. These waves are received by the ultrasound machine and turn into live pictures. -
Commercial Ultrasound Use
In the 1960's the principles of sonar were implemented in diagnostic imaging for commercial use, -
Charged-Coupled Device Development
Boyle and Smith of Bell Labs used photons of light to create an image onto a silicon chip to produce an image from light with no intervening chemical or mechanical steps. -
Computed Tomography
Godfrey Hounsfield invented the CT scanner in 1972. Today, CT scanners use x-rays and a detector mounted on a rotating frame to create detailed cross-sectional images. -
Prototype Digital Camera
Steve Sasson of Kodak creates the first prototype digital camera. -
First Commercial Digital Camera
Sony creates the first commercial digital camera called the Mavica B&W. -
Magnetic Resonance Imaging
The FDA approved the MRI for commercial and clinical availability. MRI shows different materials resonated at different magnetic field strengths. -
First Prototype Color Video Still System
The first prototype color video still system was debuted at the 1984 Olympic Games. -
Positron Emission Tomography
The first PET/CT prototype for clinical evaluation was funded by the NCI and installed at the University of Pittsburgh Medical Center. A PET scan uses a small amount of radioactive tracer that travels through blood and collects in organs and tissues. This helps the radiologist see certain areas of concern more clearly.