National Radiologic Technology Week National Radiologic Technology Week National Radiologic Technology Week® (NRTW®) is an annual event established by the American Society of Radiologic Technologists to celebrate the important role medical imaging and radiation therapy professionals play in patient care and health care safety. The weeklong celebration highlights the radiologic technology profession and raises public awareness about radiologic technologists. The first National Radiologic Technology Week® was held July 22-29, 1979. The annual celebration was later changed to November to commemorate the anniversary of the x-ray’s discovery by Wilhelm Roentgen on Nov. 8, 1895. It is celebrated on the week of November 8. “Celebrate National
Roentgen (unit) of temperature and pressure." Using 1 esu ≈ 3.33564 C and the air density of ~1.293 kg/m³ at 0 °C and 101 kPa, this converts to 2.58 × 10 C/kg, which is the modern value given by NIST. 1 × 3.33564 × 10 × 1,000,000 ÷ 1.293 = 2.58 × 10 This definition was used under different names (e, R, and German unit of radiation) for the next 20 years. In the meantime, the French Roentgen was given a different definition which amounted to 0.444 German R. In 1928, the International Congress of Radiology (ICR) defined the roentgen as "the