- What imaging modality is best for visualizing soft tissues?
- A) X-ray
- B) MRI
- C) CT
- D) Ultrasound
- Which contrast agent is commonly used in CT scans?
- A) Barium
- B) Iodine
- C) Gadolinium
- D) Carbon dioxide
- What is the primary purpose of a radiologist?
- A) Interpret imaging studies
- B) Perform surgeries
- C) Administer medications
- D) Conduct physical examinations
- Which of the following is a common indication for an MRI?
- A) Brain tumors
- B) Broken bones
- C) Pneumonia
- D) Gallstones
- In radiology, what does the term “attenuation” refer to?
- A) Reduction in the intensity of an X-ray beam
- B) Increase in the intensity of a beam
- C) Change in color of images
- D) Increase in image resolution
- Which imaging technique uses sound waves to create images?
- A) X-ray
- B) Ultrasound
- C) MRI
- D) CT
- What is the most common use of fluoroscopy?
- A) Real-time imaging of moving structures
- B) Detecting fractures
- C) Evaluating tumors
- D) Assessing brain function
- What type of radiation is used in X-ray imaging?
- A) Alpha particles
- B) Ionizing radiation
- C) Beta particles
- D) Non-ionizing radiation
- Which imaging modality is most sensitive for detecting bone fractures?
- A) Ultrasound
- B) CT scan
- C) X-ray
- D) MRI
- What is the significance of the Hounsfield unit in CT scans?
- A) It measures tissue density
- B) It indicates the amount of radiation
- C) It determines the imaging time
- D) It measures image resolution
- Which of the following is a contraindication for MRI?
- A) Claustrophobia
- B) Presence of a pacemaker
- C) Kidney disease
- D) Allergy to iodine
- What does a “negative” X-ray report typically indicate?
- A) Abnormal findings
- B) No significant abnormalities
- C) The need for further imaging
- D) Confirmation of a diagnosis
- Which of the following imaging studies uses a radioactive tracer?
- A) MRI
- B) PET scan
- C) Ultrasound
- D) X-ray
- In radiology, what does “contrast enhancement” indicate?
- A) Increased visibility of structures
- B) Decreased image quality
- C) A need for more radiation
- D) Changes in patient position
- What is the most common indication for performing a chest X-ray?
- A) Respiratory symptoms
- B) Abdominal pain
- C) Bone fractures
- D) Headaches
- What does the term “radiopacity” refer to?
- A) Ability to block X-rays
- B) Ability to transmit X-rays
- C) The speed of image acquisition
- D) The quality of the contrast medium
- Which type of imaging is best for evaluating brain tumors?
- A) X-ray
- B) MRI
- C) Ultrasound
- D) CT
- What is the primary risk associated with X-ray imaging?
- A) Exposure to ionizing radiation
- B) Allergic reactions
- C) Contrast-related nephropathy
- D) Noise pollution
- What is the typical imaging appearance of an acute hemorrhage on CT?
- A) Hypodense area
- B) Hyperdense area
- C) No change in density
- D) Cystic appearance
- In which condition is an ultrasound particularly useful?
- A) Gallbladder disease
- B) Bone fractures
- C) Brain tumors
- D) Lung cancer
- What does a “ground-glass opacity” on a chest CT suggest?
- A) Interstitial lung disease
- B) Pneumothorax
- C) Consolidation
- D) Pleural effusion
- Which imaging modality is considered the gold standard for evaluating coronary artery disease?
- A) Ultrasound
- B) Coronary angiography
- C) CT scan
- D) MRI
- What is the main advantage of digital radiography over traditional film-based radiography?
- A) Improved image storage and retrieval
- B) Lower radiation dose
- C) Higher image resolution
- D) Reduced equipment cost
- Which imaging technique can help assess blood flow in the heart?
- A) CT
- B) Cardiac MRI
- C) X-ray
- D) Ultrasound
- What is the purpose of using a grid in radiography?
- A) Reduce scatter radiation
- B) Improve image contrast
- C) Decrease exposure time
- D) Enhance patient comfort
- Which contrast agent is primarily used in MRI?
- A) Iodine
- B) Gadolinium
- C) Barium
- D) Carbon dioxide
- What does a “spiral CT” refer to?
- A) A traditional CT scan
- B) A continuous rotation of the X-ray tube
- C) A non-spiral CT scan
- D) An MRI scan
- What does the term “artifacts” refer to in radiology?
- A) Unwanted features in images
- B) Actual pathology
- C) Contrast enhancement
- D) Normal anatomical structures
- Which imaging study is most useful for assessing soft tissue masses?
- A) X-ray
- B) MRI
- C) Ultrasound
- D) CT
- In radiology, what is the significance of the “window level” setting on a CT scan?
- A) Adjusting image brightness and contrast
- B) Changing the radiation dose
- C) Altering the imaging time
- D) Modifying patient position