x ray

DR. NGUYEN XUAN THUC
On 8 Nov, 1895, Wilhelm Conrad
Röntgen (accidentally) discovered
X-rays.
A week after his discovery,
Rontgen took an X-ray photograph
of his wife's hand
X RAY
William D. Coolidge invented the first rotating anode
X-ray tube. He filed for patent in 1913 and finally it
was granted as US Patent 1,203,495 in 1916.
A male technician taking an X-ray of a female patient in 1940
X RAY ATTENUATION
X RAY ATTENUATION
Timetable of Developments in Digital Radiography
DSA SYSTEMS
CONVENTIONAL
XTV
DDR
MOBILE
CONVENTIONAL + DDR
CR
CR – COMPUTED RADIOGRAPHY
Advantages of CR and DR:
Availability :
a digital image can be transmitted electronically to
distant locations and can exist simultaneously at
multiple locations.

Flexibility:
the appearance of a digital image can be modified

Convenience:
a digital image can be stored electronically without
occupying physical space