GXMO Exam Review Questions and
Answers
History - Answer-- discovered November 8th, 1895
- Wilhem Roentgen
- 15 min exposure of hand
- first medical x-ray taken 1896
- radiograph: non moving, recording of an x-ray image
- common in World War 1
fluoroscopy - Answer-- early 1900s
- viewing an x-ray image in motion
American Society of Radiologic Technologists - Answer-- 1922 formed
- promotes research, continuing education, and guidelines for radiographic instruction
- establishes standards and examinations to certify techs
- ARRT
,Angiography - Answer-- images of blood vessels
Mammography - Answer-- imaging of breast tissue
CT (computed tomography) - Answer-- 3D images
Nuclear medicine - Answer-- images of organ function using radioactive pharmaceuitcals
Radiation therapy - Answer-- use of radiation to treat cancer tissue
ultrasonography - Answer-- sound waves to make images of the body
MRI magnetic resonance imaging - Answer-- magnetic field and radio waves to generate sectional
images of body
GCMO license - Answer-- can perform limited types of x-ray exams
- radiologic technologist can perform any type of exam
GXMO duties - Answer-- must have direction in setting exposure factors
- must have direct supervision
- may not perform mobile radiography, computed tomography, fluoroscopy, or administer contrast
media
Standard diagnostic radiologic procedures - Answer-- utilizing radiation generating equipment for one or
more of the following procedures, limited by the physicians scope of practice
,License rules - Answer-- cannot perform mobile, mammography, computed tomography, tomography,
fluoroscopy, cinefluoroscopy
- direct supervision
- administered by the Ohio Department of Health
- license expires biennially on birthday
- renewal requires completion of 12 classroom hours
X-Ray tube - Answer-- source of primary radiation
patient - Answer-- x-rays are absorbed, scattered, and transmitted
Image receptor - Answer-- receives remnant radiation
Primary Radiaiton - Answer-- exits tube via tube port directed toward patient
Scatter radiation - Answer-- emitted in all directions from patient
Remnant radiation - Answer-- composed of scatter and transmitted primary radiation directed toward
image receptor
X-Ray tube - Answer-- source of primary x-ray beam
Tube housing - Answer-- lead lined except port
tube port - Answer-- allows primary beam to exit
, central ray - Answer-center of primary radiation field
glass evelope - Answer-- maintains vacuum inside x-ray
protective housing - Answer-- lead lined, limits leakage radiation
tube port - Answer-- opening in protective housing allowing emission of primary radiation
Collimator - Answer-- under tube housing
- limits size of beam
- provides light field
- corresponding to x-ray beam field
- provides cross-hairs locating Central Ray
Patient - Answer-- contains variety of tissue
- differential absoprtion: some tissue absorbs x ray more than other tissue
- attenuation:x-ray beam decreases in intensity as it passes through the patient
image receptor - Answer-- receives remnant beam and forms latent image
- remnant beam contains transmitted radiation and scatter radiation
scatter radiation - Answer-- causes fog on image that decrease contrast
- causes radiation dose to x-ray machine operator
film based image receptor - Answer-- cassette: light tight container for film
Answers
History - Answer-- discovered November 8th, 1895
- Wilhem Roentgen
- 15 min exposure of hand
- first medical x-ray taken 1896
- radiograph: non moving, recording of an x-ray image
- common in World War 1
fluoroscopy - Answer-- early 1900s
- viewing an x-ray image in motion
American Society of Radiologic Technologists - Answer-- 1922 formed
- promotes research, continuing education, and guidelines for radiographic instruction
- establishes standards and examinations to certify techs
- ARRT
,Angiography - Answer-- images of blood vessels
Mammography - Answer-- imaging of breast tissue
CT (computed tomography) - Answer-- 3D images
Nuclear medicine - Answer-- images of organ function using radioactive pharmaceuitcals
Radiation therapy - Answer-- use of radiation to treat cancer tissue
ultrasonography - Answer-- sound waves to make images of the body
MRI magnetic resonance imaging - Answer-- magnetic field and radio waves to generate sectional
images of body
GCMO license - Answer-- can perform limited types of x-ray exams
- radiologic technologist can perform any type of exam
GXMO duties - Answer-- must have direction in setting exposure factors
- must have direct supervision
- may not perform mobile radiography, computed tomography, fluoroscopy, or administer contrast
media
Standard diagnostic radiologic procedures - Answer-- utilizing radiation generating equipment for one or
more of the following procedures, limited by the physicians scope of practice
,License rules - Answer-- cannot perform mobile, mammography, computed tomography, tomography,
fluoroscopy, cinefluoroscopy
- direct supervision
- administered by the Ohio Department of Health
- license expires biennially on birthday
- renewal requires completion of 12 classroom hours
X-Ray tube - Answer-- source of primary radiation
patient - Answer-- x-rays are absorbed, scattered, and transmitted
Image receptor - Answer-- receives remnant radiation
Primary Radiaiton - Answer-- exits tube via tube port directed toward patient
Scatter radiation - Answer-- emitted in all directions from patient
Remnant radiation - Answer-- composed of scatter and transmitted primary radiation directed toward
image receptor
X-Ray tube - Answer-- source of primary x-ray beam
Tube housing - Answer-- lead lined except port
tube port - Answer-- allows primary beam to exit
, central ray - Answer-center of primary radiation field
glass evelope - Answer-- maintains vacuum inside x-ray
protective housing - Answer-- lead lined, limits leakage radiation
tube port - Answer-- opening in protective housing allowing emission of primary radiation
Collimator - Answer-- under tube housing
- limits size of beam
- provides light field
- corresponding to x-ray beam field
- provides cross-hairs locating Central Ray
Patient - Answer-- contains variety of tissue
- differential absoprtion: some tissue absorbs x ray more than other tissue
- attenuation:x-ray beam decreases in intensity as it passes through the patient
image receptor - Answer-- receives remnant beam and forms latent image
- remnant beam contains transmitted radiation and scatter radiation
scatter radiation - Answer-- causes fog on image that decrease contrast
- causes radiation dose to x-ray machine operator
film based image receptor - Answer-- cassette: light tight container for film
