#1
Which type of radiation is commonly used in diagnostic radiography?
Gamma rays
X-rays
Alpha particles
Beta particles
#2
What is the function of the X-ray tube in radiography?
To generate X-rays
To convert X-rays into electrical signals
To process and display the image
To focus the X-ray beam
#3
What is the purpose of a radiographic grid in X-ray imaging?
To increase patient comfort
To reduce scattered radiation reaching the image receptor
To enhance image contrast
To decrease exposure time
#4
Which imaging modality uses radiofrequency waves and strong magnetic fields for creating images?
CT scan
MRI
Ultrasound
PET scan
#5
What is the primary purpose of the lead apron worn by patients during X-ray examinations?
To protect against electromagnetic interference
To shield from ionizing radiation exposure to sensitive tissues
To enhance patient comfort
To reduce image artifacts
#6
Which radiographic view is commonly used to assess the alignment of long bones, such as the femur or tibia?
AP (Anteroposterior) view
Lateral view
Oblique view
AP Axial view
#7
Which imaging technique is commonly used to visualize blood vessels and assess blood flow?
CT angiography
Magnetic resonance angiography (MRA)
Positron emission tomography (PET)
Ultrasound
#8
In digital radiography, what is the role of the image receptor?
To emit X-rays
To convert X-rays into electrical signals
To process and display the image
To focus the X-ray beam
#9
Which of the following factors affects the quality of a radiographic image?
SID (Source-to-Image Distance)
Sensitivity of the image receptor
mA (Milliamperage)
All of the above
#10
What is the purpose of the X-ray tube housing in radiography?
To filter out low-energy X-rays
To collimate the X-ray beam
To provide electrical power to the X-ray tube
To protect the user from radiation exposure
#11
Which of the following materials is commonly used as a contrast agent in X-ray imaging of the gastrointestinal tract?
Barium sulfate
Iodine
Lead
Aluminum
#12
What is the purpose of the X-ray grid in radiography?
To increase patient comfort
To reduce scattered radiation reaching the image receptor
To enhance image contrast
To decrease exposure time
#13
Which imaging modality is based on the detection of emitted positrons?
Computed tomography (CT)
Magnetic resonance imaging (MRI)
Positron emission tomography (PET)
Ultrasound
#14
What is the purpose of the X-ray tube collimator in radiography?
To focus X-rays onto the image receptor
To limit the X-ray beam size and shape
To amplify the X-ray intensity
To enhance image resolution
#15
Which imaging technique uses sound waves to create detailed images of internal structures in the body?
Computed tomography (CT)
Magnetic resonance imaging (MRI)
Positron emission tomography (PET)
Ultrasound
#16
What is the purpose of the collimator in radiography?
To focus X-rays onto the image receptor
To limit the X-ray beam size and shape
To amplify the X-ray intensity
To enhance image resolution
#17
In radiography, what does the term 'mAs' refer to?
Magnetic Absorption Strength
Milliampere-seconds
Magnification Adjustment Scale
Mammographic Analysis System
#18
What is the purpose of contrast media in fluoroscopy?
To improve image sharpness
To enhance visualization of structures by altering tissue density
To reduce radiation exposure to the patient
To shorten examination time
#19
In radiographic imaging, what does the term 'SID' stand for?
Source-to-Image Detector
Scattered Intensity Decay
Systematic Imaging Device
Secondary Ionization Density
#20
What is the purpose of the 'C-arm' in fluoroscopy?
To rotate the X-ray tube around the patient
To control the contrast media injection rate
To provide real-time imaging during procedures
To adjust the X-ray beam collimation
#21
What is the primary advantage of computed radiography (CR) over traditional film-screen radiography?
Higher spatial resolution
Reduced radiation dose to the patient
Faster image acquisition
Digital storage and post-processing capabilities
#22
Which radiographic view is commonly used to assess the temporomandibular joint (TMJ)?
AP (Anteroposterior) view
Lateral view
Oblique view
Towne's view
#23
What is the primary purpose of X-ray tube filtration in radiography?
To reduce patient dose
To increase image contrast
To improve spatial resolution
To remove scattered radiation
#24
Which type of radiographic image receptor is known for its direct conversion of X-rays into electrical signals?
Film-screen detector
Computed radiography (CR) cassette
Digital radiography (DR) detector
Fluoroscopic screen
#25
In radiography, what does the term 'kVp' stand for?
Kilovolt per pixel
Kilovolt peak
Kinetic velocity of photons
Kernel variance parameter