What are X-rays primarily used for in medicine?
a) To treat cancer
b) To diagnose fractures
c) To sterilize equipment
d) To monitor blood pressure
What type of radiation are X-rays classified as?
a) Alpha radiation
b) Beta radiation
c) Electromagnetic radiation
d) Neutron radiation
What is the wavelength range of X-rays?
a) 10^-10 to 10^-7 meters
b) 10^-12 to 10^-9 meters
c) 10^-3 to 10^-1 meters
d) 10^-1 to 10^0 meters
What device is used to produce X-rays?
a) Geiger counter
b) X-ray tube
c) Photon detector
d) Cyclotron
What is the primary benefit of X-rays in medical imaging?
a) They help in visualizing soft tissues
b) They provide high-energy radiation for treatments
c) They create detailed images of the body’s internal structure
d) They are used to analyze chemical reactions
Which part of the body is most sensitive to X-ray radiation?
a) Skin
b) Bone
c) Blood cells
d) Brain
In X-ray imaging, what does the contrast in the image depend on?
a) The angle of the X-ray beam
b) The density of the tissue
c) The patient’s body temperature
d) The exposure time
What is a common application of X-rays in industry?
a) Food preservation
b) Material inspection and quality control
c) Genetic modification of crops
d) Weather forecasting
What is the primary purpose of a lead apron during an X-ray examination?
a) To increase X-ray exposure
b) To shield the body from unnecessary radiation
c) To focus the X-ray beam
d) To enhance the image clarity
Which type of imaging technique uses X-rays to create cross-sectional images of the body?
a) MRI
b) CT scan
c) Ultrasound
d) PET scan
Which of the following is true about the penetration power of X-rays?
a) X-rays can penetrate only soft tissues
b) X-rays are absorbed by dense materials like bone
c) X-rays are blocked by water
d) X-rays do not penetrate the human body
What safety measure is typically used when taking X-rays?
a) Wearing special glasses
b) Using lead shields or aprons
c) Taking the X-ray in open air
d) Decreasing the exposure time
Which of the following is a disadvantage of using X-rays for medical imaging?
a) They are too expensive to use
b) They expose patients to ionizing radiation
c) They are only effective for soft tissue analysis
d) They cannot be used on pregnant women
Which part of an X-ray machine converts electrical energy into X-rays?
a) Cathode
b) Anode
c) Filament
d) Target
What is the name of the process that occurs when X-rays interact with matter and cause ionization?
a) Absorption
b) Scattering
c) Ionization
d) Reflection
How are X-rays used in the treatment of cancer?
a) By imaging the tumor’s location
b) By strengthening the immune system
c) By causing the destruction of cancerous cells
d) By improving blood circulation
What is the key difference between X-rays and visible light?
a) X-rays have higher energy than visible light
b) X-rays are slower than visible light
c) X-rays are not visible to the human eye
d) X-rays are not used in medical imaging
What is the effect of increasing the voltage in an X-ray tube?
a) It decreases the quality of the X-ray image
b) It increases the wavelength of the X-rays
c) It increases the energy and penetrating power of the X-rays
d) It makes the X-ray beam weaker
Which imaging technique uses X-rays to detect cavities in teeth?
a) CT scan
b) Dental X-rays
c) MRI
d) Ultrasound
What is the most common method used to minimize radiation exposure during X-ray procedures?
a) Reducing the number of X-ray images taken
b) Increasing the exposure time
c) Using high-dose X-rays
d) Using lead shields
What is a typical application of X-rays in security?
a) Analyzing food safety
b) Scanning luggage for contraband
c) Testing the strength of materials
d) Monitoring air quality
What does an X-ray technician do?
a) Operates the MRI machine
b) Provides medical treatment
c) Takes X-ray images for diagnostic purposes
d) Diagnoses the patient’s condition
What happens to the X-ray image when the exposure time is increased?
a) The image becomes clearer
b) The image becomes blurry
c) The image becomes overexposed
d) The image becomes underexposed
How do X-rays help in the detection of fractures?
a) They produce detailed images of the bone structure
b) They measure the strength of the bone
c) They help in the healing process
d) They detect bone density
What happens to X-ray photons when they pass through denser materials?
a) They are absorbed more
b) They pass through with less scattering
c) They gain energy
d) They reflect off the material
What is the effect of using a high-energy X-ray beam?
a) It decreases the contrast in the image
b) It reduces the penetration power
c) It improves the resolution of the image
d) It increases the penetration power
What is the role of contrast agents in X-ray imaging?
a) To enhance the visibility of tissues
b) To decrease radiation exposure
c) To create a clearer image of bones
d) To increase image resolution
