Radiology Imaging Modalities Quiz
29 Questions
5 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which imaging modality is recommended for imaging the colon without the need for a colonoscopy?

  • MR enterography
  • CT angiography
  • MRCP
  • CT enterography (correct)
  • What is the main advantage of CT angiography of the mesenteric vessels?

  • Visualizing the biliary tree
  • Imaging abdominal masses
  • Detecting bowel ischemia (correct)
  • Detecting appendicular abscess
  • Which imaging technique is primarily used for evaluating appendicitis complications like appendicular abscess?

  • CT (correct)
  • US
  • IVP
  • MRI
  • In urological disorders, which imaging modality is used to detect vesicoureteral reflux (VUR) in children?

    <p>MCUG</p> Signup and view all the answers

    What is the best imaging modality for brain disorders such as congenital, inflammatory, and neoplastic conditions?

    <p>MRI</p> Signup and view all the answers

    Which imaging technique is recommended in cases of trauma and emergency to detect hemorrhage and calcifications in the brain?

    <p>CT enterography</p> Signup and view all the answers

    What modality is commonly used in skeletal surveys for pediatric and adult patients?

    <p>X-ray</p> Signup and view all the answers

    Which route of contrast administration is typically used for gastrointestinal imaging?

    <p>Oral</p> Signup and view all the answers

    What is the main indication for performing a Ba enema procedure?

    <p>Structural abnormalities of the colon</p> Signup and view all the answers

    Which imaging technique uses high-frequency sound waves to produce internal body images?

    <p>Ultrasound</p> Signup and view all the answers

    What condition is diagnosed based on a Bone Mineral Density (BMD) score below -2.5 and a history of fractures?

    <p><strong>Osteoporosis</strong></p> Signup and view all the answers

    What is the primary purpose of an Intravenous Pyelogram (IVP) procedure?

    <p><strong>Ascending urography</strong></p> Signup and view all the answers

    What imaging modality is preferred for accurately identifying the nidus of an osteoid osteoma?

    <p>CT</p> Signup and view all the answers

    What is the most common reason for performing amputation?

    <p>Failure of medical therapy</p> Signup and view all the answers

    Which rare complication can develop as a result of Marjolin ulcer?

    <p>Secondary sarcoma</p> Signup and view all the answers

    In which bones do osteoid osteomas mostly occur?

    <p>Long bones</p> Signup and view all the answers

    Which benign bone tumor is centrally located with endosteal scalloping and contains chondroid matrix with 'ring-and-arc' or 'popcorn' calcifications?

    <p>Enchondroma</p> Signup and view all the answers

    What is the characteristic feature of the intramedullary lesion at the proximal metaphysis of the tibia?

    <p>Liquified core</p> Signup and view all the answers

    Which imaging findings are associated with the rounded intramedullary lesion at the tibia's proximal metaphysis?

    <p>Coronal T1 post contrast fat sat</p> Signup and view all the answers

    What is the second-most common benign bone tumor, accounting for 10% of all such lesions?

    <p>Enchondroma</p> Signup and view all the answers

    What can an intraosseous abscess be related to according to the provided information?

    <p>Chronic pyogenic osteomyelitis</p> Signup and view all the answers

    Where are enchondromas most frequently found?

    <p>Short tubular bones of hands and feet</p> Signup and view all the answers

    'Ring-and-arc' or 'popcorn' calcifications are characteristic of which benign bone tumor?

    <p>Enchondroma</p> Signup and view all the answers

    What is the most common variant of Chiari malformations?

    <p>Chiari I malformation</p> Signup and view all the answers

    Which imaging modality is the preferred choice for diagnosing Chiari I malformation?

    <p>MRI</p> Signup and view all the answers

    What is the main characteristic of Chiari I malformation when observed on sagittal MRI imaging?

    <p>Pointed tonsils</p> Signup and view all the answers

    What are the possible causes of congenital brain malformations according to the text?

    <p>Genetic abnormalities</p> Signup and view all the answers

    Which type of anomaly accounts for approximately one third of all major anomalies diagnosed at or after birth?

    <p>Congenital brain malformations</p> Signup and view all the answers

    What percentage of perinatal deaths do congenital central nervous system disorders cause?

    <p>25%</p> Signup and view all the answers

    Study Notes

    Skeletal Survey

    • Pediatric: used for dysplasia syndromes
    • Adults: used for metabolic diseases, such as hyperparathyroidism

    Imaging Modalities

    • X-ray: used for skeletal survey, but poor discrimination of internal organs, so contrast administration is needed
    • Fluoroscopy: used for gastrointestinal, genitourinary, and angiography imaging, as well as for intraoperative procedures like foreign body removal and nephrostomy

    Conventional Radiography

    • Uses: gastrointestinal, genitourinary, and skeletal imaging
    • Procedures: Ba swallow, Ba meal, Ba enema, IVP, angiography, and ascending urography

    DEXA (Dual Energy X-ray Absorptiometry)

    • Used for bone density measurement
    • WHO classification:
      • Normal: BMD > -1.0
      • Osteopenia: BMD between -1.0 and -2.5
      • Osteoporosis: BMD < -2.5 and history of one or more fractures

    Ultrasound

    • Uses: gastrointestinal, genitourinary, and skeletal imaging
    • Procedure: used for initial investigation of appendicitis

    CT Scan

    • Uses: trauma, abdominal masses, and inflammatory bowel disease
    • Advantages:
      • CT enterography for imaging the bowel
      • CT virtual colonoscopy for imaging the colon
      • CT angiography for imaging the mesenteric vessels

    MRCP (Magnetic Resonance Cholangiopancreatography)

    • Uses: imaging the biliary tree in cases of jaundice and congenital biliary malformations
    • Procedure: MRI enterography for imaging the bowel in cases of inflammatory bowel disease

    Neurological Disorders

    • Imaging recommendations:
      • CT for trauma and emergency cases
      • MRI for brain disorders (congenital, inflammatory, neoplastic)
    • Uses:
      • Detecting hemorrhage and calcification
      • Visualizing the urinary tract without contrast medium or radiation

    Osteomyelitis

    • Characteristics:
      • Geographic margins
      • Liquified core
      • Surrounded by moderate perifocal edema
      • Post-contrast enhancement
    • Complications:
      • Sinus tract formation
      • Marjolin ulcer
      • Secondary sarcoma
      • Pathological fracture
      • Secondary amyloidosis

    Osteoid Osteoma

    • Characteristics:
      • Radiolucent nidus
      • Focal calcification
      • Benign periosteal reaction
    • Diagnosis:
      • CT is the modality of choice
      • MRI may obscure the nidus, leading to a wrong diagnosis

    Enchondroma

    • Characteristics:
      • Cartilaginous tumors
      • Contain chondroid matrix
      • "Ring-and-arc" or "popcorn" calcifications
      • Centrally located with endosteal scalloping
      • Frequent occurrence in short tubular bones of the hands and feet
    • Diagnosis:
      • MRI shows high T2 signal and lobular contour
      • Malignant transformation is rare in the pediatric population

    Osteochondroma

    • Characteristics:
      • Most common benign bone tumor
      • Also referred to as exostosis
      • Frequent occurrence in the first three decades
      • Centrally located with endosteal scalloping
      • May have small foci of low signal due to calcification in the chondroid matrix

    Penetrating Head Injury

    • Characteristics:
      • Diffuse axonal injury
      • Cerebral contusions
      • Temporal fractures
    • Imaging:
      • CT is the modality of choice
      • MRI shows high T2 signal and lobular contour

    Congenital CNS Disorders

    • Characteristics:
      • Abnormal developments of the brain during intrauterine life
      • Causes: genetic, environmental, and infectious
      • Complications: approximately 25% of perinatal deaths and one-third of all major anomalies diagnosed at or after birth
    • Examples: Chiari malformations

    Chiari Malformations

    • Characteristics:
      • Caudal displacement of the cerebellum and brainstem
      • Chiari I malformation: most common variant, characterized by a caudal descent of the cerebellar tonsils through the foramen magnum
    • Diagnosis:
      • MRI is the imaging modality of choice
      • Sagittal imaging shows pointed tonsils with a peg-like appearance

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on various radiology imaging modalities used in skeletal surveys for pediatric and adult patients, including X-ray with Contrast Administration, Fluroscopy, Oral, Rectal, and IV contrast techniques. Explore the different imaging techniques for specific body parts and conditions.

    More Like This

    Use Quizgecko on...
    Browser
    Browser