POSITIONING
72 inches
what does ALARA stand for
as low as reasonably achievable
who invented x-rays and when
wilhelm conrad roentgen, November 8, 1895
what is the position when the patient is lying flat on their back
supine
what divides the lunges into left and right sides
mediastinum
when doing a lateral decub chest x-ray and we are looking for possible fluid in pleural cavity the suspected side is placed where? why?
down, fluid levels out at the bottom
what is the positive end of the x-ray tube
anode
what was the first x-ray taken of
what factor determines the QUANTITY of x-rays being produces
mAs
how many vertebrae are in each spinal section
cervical- 7
thoracic- 12
lumbar- 5
a patient comes to the ER and they are ambulatory. the doctor orders a 3 view series. what projections do we do?
PA chest
AP upright abdomen
AP supine abdomen
what is the SI unit used to measure absorbed dose of radiation
gray
what does ASRT stand for
American society of radiologic technologists
the patient is lying on their left side with their right side up. what is the patients position?
left lateral decubitus
what plane divides the body into right and left equal halves
midsagittal
what is the patient positioning for lateral sinuses
MSP parallel to IR
IPL perpendicular to IR
IOML perpendicular to front edge of IR
what material is used in the x-ray tube due to its high atomic number and melting point
tungsten
what was the first device that produced x-rays
crookes tube
what material is used for sheilding
lead
how many lobes does the left lung have
2
what are the exposure checkpoints for an AP supine abdomen
liver margin
kidney margin
posas muscles
lumbar transverse processes
ribs
what is the number 1 source of occupational exposure
Compton interactions
who was the first fatality from x-ray exposure
charles daly
what is it called when x-ray photons are absorbed by the patient/reduced before reaching the detector
attenuation
what sinuses are located in the cheekbones
maxillary