Radiology Technologist Practice Test

{
  "meta": {
    "title": "Radiography Student Practice Test",
    "version": "1.0.0",
    "created_utc": "2026-02-13T17:37:24Z",
    "note": "Educational practice test for radiography students. Not a substitute for clinical supervision or institutional policy."
  },
  "questions": [
    {
      "id": "Q01",
      "domain": "Radiation Protection",
      "stem": "Which action reduces patient dose in general radiography without degrading diagnostic information when used appropriately?",
      "choices": [
        "Use tight collimation to the region of interest",
        "Increase mAs substantially to reduce quantum mottle",
        "Remove filtration to increase beam intensity",
        "Use a longer source-to-image distance solely to increase magnification"
      ],
      "answer": 0,
      "explanation": "Collimation limits irradiated tissue volume and reduces scatter, which can lower patient dose and improve image contrast. Raising mAs increases dose. Removing filtration increases skin dose. Increasing SID changes geometry; it does not reliably reduce dose and may require higher technique depending on receptor exposure."
    },
    {
      "id": "Q02",
      "domain": "Radiation Protection",
      "stem": "For a radiographic exam using a fixed kVp, which technique change most directly follows the 15% rule?",
      "choices": [
        "Increase kVp by 15% and halve mAs to maintain receptor exposure",
        "Increase kVp by 15% and double mAs to maintain receptor exposure",
        "Decrease kVp by 15% and halve mAs to maintain receptor exposure",
        "Decrease kVp by 15% and double mAs to maintain receptor exposure"
      ],
      "answer": 0,
      "explanation": "A 15% increase in kVp approximately doubles receptor exposure, so mAs can be reduced by about 50% to maintain exposure. The other combinations do not preserve receptor exposure."
    },
    {
      "id": "Q03",
      "domain": "Radiation Protection",
      "stem": "Which dose quantity is most closely related to stochastic risk for the whole patient?",
      "choices": [
        "Effective dose (mSv)",
        "Entrance skin exposure only",
        "Half-value layer only",
        "Grid ratio"
      ],
      "answer": 0,
      "explanation": "Effective dose accounts for absorbed dose and tissue weighting factors across organs, aligning with stochastic risk modeling. The others are not whole-body risk metrics."
    },
    {
      "id": "Q04",
      "domain": "Radiation Physics",
      "stem": "In diagnostic x-ray production, which interaction produces characteristic radiation?",
      "choices": [
        "An electron ejects an inner-shell electron and an outer-shell electron fills the vacancy",
        "An electron is deflected by the nucleus and loses kinetic energy",
        "A photon is completely absorbed by a valence electron",
        "A photon ejects an electron and is scattered with reduced energy"
      ],
      "answer": 0,
      "explanation": "Characteristic x-rays are emitted when an outer-shell electron fills an inner-shell vacancy. Deflection by the nucleus produces bremsstrahlung. The other options describe photoelectric and Compton interactions."
    },
    {
      "id": "Q05",
      "domain": "Radiation Physics",
      "stem": "Which statement about Compton scatter in diagnostic imaging is most accurate?",
      "choices": [
        "It degrades image contrast and increases occupational exposure",
        "It occurs only at low photon energies and thin parts",
        "It increases contrast by preferentially absorbing low-energy photons",
        "It is eliminated by using higher kVp"
      ],
      "answer": 0,
      "explanation": "Compton scatter is a major source of scatter at diagnostic energies, reducing contrast and contributing to staff exposure. It is not restricted to low energies and cannot be eliminated by kVp alone."
    },
    {
      "id": "Q06",
      "domain": "Image Quality",
      "stem": "A radiograph appears excessively noisy (grainy). Which adjustment most directly reduces quantum mottle?",
      "choices": [
        "Increase mAs",
        "Decrease mAs",
        "Decrease SID",
        "Increase kVp by 15% and keep mAs constant"
      ],
      "answer": 0,
      "explanation": "Quantum mottle primarily reflects insufficient photon quantity reaching the detector. Increasing mAs increases photon number and reduces mottle. Decreasing mAs worsens noise. Changing SID affects exposure but introduces geometric effects; the most direct correction is increasing mAs (or appropriately adjusting kVp/mAs)."
    },
    {
      "id": "Q07",
      "domain": "Image Quality",
      "stem": "Increasing kVp (with mAs unchanged) generally has which effect on image contrast in radiography?",
      "choices": [
        "Decreases contrast (more gray scale)",
        "Increases contrast (shorter gray scale)",
        "Has no effect on contrast",
        "Eliminates scatter so contrast improves"
      ],
      "answer": 0,
      "explanation": "Higher kVp increases beam penetrability and increases the proportion of Compton interactions, typically producing a longer gray scale and reduced radiographic contrast. It does not eliminate scatter."
    },
    {
      "id": "Q08",
      "domain": "Image Quality",
      "stem": "Which factor most directly increases geometric unsharpness?",
      "choices": [
        "Larger focal spot size",
        "Longer SID",
        "Shorter OID",
        "Using a grid"
      ],
      "answer": 0,
      "explanation": "Geometric unsharpness increases with larger focal spot size and larger OID, and decreases with longer SID. A grid affects scatter, not focal spot blur."
    },
    {
      "id": "Q09",
      "domain": "Patient Care",
      "stem": "A patient reports a prior mild rash after iodinated contrast. For a future contrast-enhanced study, the technologist\u2019s best immediate action is to:",
      "choices": [
        "Notify the radiologist and follow the facility\u2019s contrast reaction protocol",
        "Proceed without documentation because the prior reaction was mild",
        "Administer contrast and observe the patient without notifying anyone",
        "Cancel the exam independently and send the patient home"
      ],
      "answer": 0,
      "explanation": "Prior contrast reactions require physician notification and adherence to institutional policy (screening, risk stratification, possible premedication, alternative imaging). Technologists should not independently cancel but must escalate appropriately."
    },
    {
      "id": "Q10",
      "domain": "Patient Care",
      "stem": "Which vital sign change most strongly suggests an acute vasovagal response?",
      "choices": [
        "Bradycardia with hypotension",
        "Tachycardia with hypertension",
        "Hypertension with bounding pulse",
        "Fever with tachycardia"
      ],
      "answer": 0,
      "explanation": "Vasovagal episodes commonly involve parasympathetic activation with bradycardia and hypotension, often with pallor and diaphoresis."
    },
    {
      "id": "Q11",
      "domain": "Infection Control",
      "stem": "Which practice best aligns with standard precautions for patient contact in imaging?",
      "choices": [
        "Perform hand hygiene before and after each patient interaction",
        "Wear sterile gloves for all exams regardless of exposure risk",
        "Use the same gloves for multiple patients if they appear clean",
        "Skip hand hygiene when gloves are worn"
      ],
      "answer": 0,
      "explanation": "Hand hygiene before and after patient contact is foundational. Gloves do not replace hand hygiene and must be changed between patients. Sterile gloves are not required for routine non-sterile contact."
    },
    {
      "id": "Q12",
      "domain": "Positioning: Chest",
      "stem": "For a routine upright PA chest radiograph, the central ray is typically directed to the:",
      "choices": [
        "Level of T7",
        "Level of C7",
        "Xiphoid process",
        "Level of L3"
      ],
      "answer": 0,
      "explanation": "The PA chest CR is commonly centered at T7 (approximately the inferior angle of the scapula) to include apices through costophrenic angles."
    },
    {
      "id": "Q13",
      "domain": "Positioning: Chest",
      "stem": "Which instruction most improves visualization of the lung apices on a PA chest radiograph?",
      "choices": [
        "Roll shoulders forward and depress shoulders",
        "Raise chin and shrug shoulders",
        "Rotate torso 10 degrees toward the left",
        "Suspend breathing after forced expiration"
      ],
      "answer": 0,
      "explanation": "Rolling shoulders forward and depressing shoulders moves scapulae laterally and lowers clavicles, improving lung field visualization."
    },
    {
      "id": "Q14",
      "domain": "Positioning: Abdomen",
      "stem": "For an AP supine abdomen (KUB), the IR is centered:",
      "choices": [
        "At the level of the iliac crests",
        "At the xiphoid process",
        "2 inches above the iliac crests",
        "At the symphysis pubis"
      ],
      "answer": 0,
      "explanation": "A KUB is typically centered at the iliac crests to include the kidneys through the symphysis when properly collimated and positioned."
    },
    {
      "id": "Q15",
      "domain": "Positioning: Abdomen",
      "stem": "Which projection is most appropriate to demonstrate air-fluid levels in the abdomen?",
      "choices": [
        "Left lateral decubitus abdomen with horizontal beam",
        "AP supine abdomen",
        "PA prone abdomen",
        "AP axial lordotic chest"
      ],
      "answer": 0,
      "explanation": "A left lateral decubitus abdomen with a horizontal beam is used when the patient cannot stand; it demonstrates air-fluid levels and free intraperitoneal air (when paired with appropriate positioning)."
    },
    {
      "id": "Q16",
      "domain": "Positioning: Spine",
      "stem": "For a lateral lumbar spine, which structure should be best demonstrated without significant rotation?",
      "choices": [
        "Superimposed posterior vertebral body margins",
        "Open intervertebral foramina",
        "Elongated lumbar pedicles",
        "Symmetric iliac wings in profile"
      ],
      "answer": 0,
      "explanation": "A true lateral lumbar spine shows superimposed posterior vertebral body margins and superimposed pedicles; foramina are best on obliques."
    },
    {
      "id": "Q17",
      "domain": "Positioning: Spine",
      "stem": "The 'Scottie dog' appearance is classically associated with which projection?",
      "choices": [
        "Lumbar spine oblique",
        "AP thoracic spine",
        "Lateral cervical spine",
        "AP axial skull (Towne)"
      ],
      "answer": 0,
      "explanation": "The lumbar oblique demonstrates the pars interarticularis and related anatomy often described as the Scottie dog."
    },
    {
      "id": "Q18",
      "domain": "Positioning: Upper Extremity",
      "stem": "To best demonstrate the radial head free of superimposition in an AP elbow, you should position the elbow:",
      "choices": [
        "With the hand supinated and the humeral epicondyles parallel to the IR",
        "With the hand pronated and elbow flexed 90 degrees",
        "In a lateral position with thumb up",
        "In an oblique position with elbow extended and hand pronated"
      ],
      "answer": 0,
      "explanation": "An AP elbow with hand supinated and epicondyles parallel minimizes rotation and improves radial head assessment. Radial head can also be evaluated with specific obliques, but the question targets correct AP positioning."
    },
    {
      "id": "Q19",
      "domain": "Positioning: Upper Extremity",
      "stem": "Which view is preferred to demonstrate a posterior fat pad sign in the elbow?",
      "choices": [
        "True lateral elbow",
        "AP elbow",
        "AP oblique elbow (medial rotation)",
        "Radial head-capitellum (Coyle) view only"
      ],
      "answer": 0,
      "explanation": "The posterior fat pad sign is assessed on a true lateral elbow, typically with 90 degrees of flexion when possible."
    },
    {
      "id": "Q20",
      "domain": "Positioning: Lower Extremity",
      "stem": "For an AP pelvis, which landmark helps ensure no rotation?",
      "choices": [
        "Symmetric obturator foramina and iliac wings",
        "Left iliac wing larger than right",
        "Right obturator foramen larger than left",
        "Femoral heads not included"
      ],
      "answer": 0,
      "explanation": "A non-rotated AP pelvis shows symmetric obturator foramina and iliac wings with the sacrum and coccyx aligned to the pubic symphysis."
    },
    {
      "id": "Q21",
      "domain": "Positioning: Lower Extremity",
      "stem": "For an AP knee, slight internal rotation of the leg is used primarily to:",
      "choices": [
        "Place femoral condyles parallel to the IR",
        "Increase OID to magnify joint space",
        "Superimpose tibial spines",
        "Eliminate grid cutoff"
      ],
      "answer": 0,
      "explanation": "A slight internal rotation aligns the femoral condyles parallel to the IR, improving joint space and minimizing rotation artifacts."
    },
    {
      "id": "Q22",
      "domain": "Positioning: Skull/Sinuses",
      "stem": "Which projection best demonstrates the petrous ridges in the lower third of the orbits?",
      "choices": [
        "PA axial (Caldwell) with 15\u00b0 caudal CR",
        "AP axial (Towne)",
        "PA (0\u00b0) skull",
        "Submentovertex (SMV)"
      ],
      "answer": 0,
      "explanation": "A Caldwell view with a 15\u00b0 caudal angle places the petrous ridges in the lower third of the orbits."
    },
    {
      "id": "Q23",
      "domain": "Positioning: Skull/Sinuses",
      "stem": "Which skull projection best demonstrates the foramen magnum and occipital bone with dorsum sellae and posterior clinoids within the foramen magnum?",
      "choices": [
        "AP axial (Towne) with appropriate OML/IOML alignment",
        "PA axial (Caldwell)",
        "Lateral skull",
        "SMV"
      ],
      "answer": 0,
      "explanation": "The AP axial Towne projection is designed to show the occipital bone and foramen magnum with specific relationship of sella structures."
    },
    {
      "id": "Q24",
      "domain": "Radiation Protection",
      "stem": "When imaging a pediatric patient, the most appropriate approach to technique selection is to:",
      "choices": [
        "Use pediatric technique charts and minimize repeats with immobilization as needed",
        "Use adult technique factors to avoid noise",
        "Increase kVp and mAs to ensure high exposure index",
        "Skip collimation to avoid cutting off anatomy"
      ],
      "answer": 0,
      "explanation": "Pediatrics require size-based technique charts, tight collimation, shielding where appropriate, and repeat reduction strategies. Adult techniques and excessive exposure are inappropriate."
    },
    {
      "id": "Q25",
      "domain": "Digital Imaging",
      "stem": "In CR/DR, what does 'exposure creep' refer to?",
      "choices": [
        "Gradual increase in patient dose over time due to consistently high exposures",
        "A sudden equipment failure causing overexposed images",
        "A software bug that decreases contrast",
        "Grid cutoff caused by off-level alignment"
      ],
      "answer": 0,
      "explanation": "Wide latitude in digital systems can mask overexposure, encouraging gradually higher techniques unless exposure indicators and QA are monitored."
    },
    {
      "id": "Q26",
      "domain": "Digital Imaging",
      "stem": "Which factor most directly affects spatial resolution in a digital radiography detector?",
      "choices": [
        "Pixel size (sampling frequency)",
        "kVp setting",
        "Patient thickness",
        "Added filtration"
      ],
      "answer": 0,
      "explanation": "Smaller pixel size (higher sampling frequency) improves potential spatial resolution. kVp and thickness influence contrast and noise more than intrinsic spatial resolution."
    },
    {
      "id": "Q27",
      "domain": "Quality Assurance",
      "stem": "A repeated pattern of light and dark lines across DR images most commonly indicates a problem with:",
      "choices": [
        "Detector calibration or readout (e.g., bad row/column)",
        "Patient motion",
        "Excessive kVp",
        "Incorrect SID"
      ],
      "answer": 0,
      "explanation": "Line artifacts often reflect detector element issues or calibration errors (row/column defects). Motion produces blurring, not repeating fixed line patterns."
    },
    {
      "id": "Q28",
      "domain": "Quality Assurance",
      "stem": "If the collimation field is not recognized correctly in CR/DR, the most likely consequence is:",
      "choices": [
        "Inaccurate exposure indicator and inappropriate rescaling",
        "Elimination of scatter",
        "Automatic reduction of patient dose",
        "Improved contrast without a grid"
      ],
      "answer": 0,
      "explanation": "Poor collimation recognition can cause histogram analysis errors, leading to incorrect rescaling and misleading exposure indicators."
    },
    {
      "id": "Q29",
      "domain": "Patient Care",
      "stem": "Which communication approach best supports informed consent principles during routine radiography?",
      "choices": [
        "Explain the procedure in plain language, verify understanding, and answer questions",
        "Provide only technical details to avoid anxiety",
        "Proceed quickly and avoid questions to improve throughput",
        "Assume the referring provider already explained everything"
      ],
      "answer": 0,
      "explanation": "Patients benefit from clear explanations, opportunity for questions, and confirmation of understanding, consistent with informed consent and patient-centered care."
    },
    {
      "id": "Q30",
      "domain": "Patient Care",
      "stem": "A patient who cannot stand for an erect chest radiograph most commonly should be imaged using:",
      "choices": [
        "AP semi-upright with the detector behind the patient",
        "Prone chest",
        "Trendelenburg position",
        "Lateral decubitus chest with vertical beam"
      ],
      "answer": 0,
      "explanation": "An AP semi-upright chest is a common alternative when the patient cannot stand, balancing practicality and diagnostic needs."
    },
    {
      "id": "Q31",
      "domain": "Radiation Physics",
      "stem": "Increasing filtration in an x-ray beam generally:",
      "choices": [
        "Increases average photon energy and reduces skin dose",
        "Decreases average photon energy and increases skin dose",
        "Has no impact on patient dose",
        "Eliminates characteristic radiation"
      ],
      "answer": 0,
      "explanation": "Filtration removes low-energy photons, raising average energy (beam hardening) and reducing superficial dose. It does not eliminate characteristic radiation."
    },
    {
      "id": "Q32",
      "domain": "Radiation Physics",
      "stem": "Half-value layer (HVL) is used clinically as an indicator of:",
      "choices": [
        "Beam quality (penetrability)",
        "Focal spot size",
        "Grid frequency",
        "Patient effective dose"
      ],
      "answer": 0,
      "explanation": "HVL measures the thickness of absorber needed to reduce beam intensity by half, reflecting beam quality/penetrability."
    },
    {
      "id": "Q33",
      "domain": "Positioning: Shoulder",
      "stem": "To demonstrate the lesser tubercle of the humerus in profile, the shoulder should be positioned in:",
      "choices": [
        "Internal rotation",
        "External rotation",
        "Neutral rotation",
        "AP axial (inferosuperior)"
      ],
      "answer": 0,
      "explanation": "Internal rotation places the lesser tubercle in profile medially; external rotation shows the greater tubercle in profile laterally."
    },
    {
      "id": "Q34",
      "domain": "Positioning: Hip",
      "stem": "For an AP hip, internal rotation of the leg (when trauma is not suspected) is used to:",
      "choices": [
        "Place the femoral neck parallel to the IR",
        "Demonstrate the lesser trochanter in profile",
        "Open the SI joints",
        "Reduce magnification of the acetabulum"
      ],
      "answer": 0,
      "explanation": "Internal rotation places the femoral neck parallel to the IR, reducing foreshortening. Prominent lesser trochanter suggests external rotation."
    },
    {
      "id": "Q35",
      "domain": "Positioning: Spine",
      "stem": "Which projection best demonstrates the intervertebral foramina of the cervical spine?",
      "choices": [
        "45\u00b0 oblique cervical spine",
        "AP cervical spine",
        "Lateral cervical spine",
        "Open-mouth odontoid"
      ],
      "answer": 0,
      "explanation": "Cervical obliques (approximately 45\u00b0) are designed to show intervertebral foramina."
    },
    {
      "id": "Q36",
      "domain": "Positioning: Cervical Spine",
      "stem": "For an open-mouth odontoid view, the key alignment is to:",
      "choices": [
        "Align the lower edge of upper incisors with the base of skull (mastoid tip)",
        "Flex the chin to the chest",
        "Extend the chin excessively",
        "Rotate the head 15\u00b0 to the right"
      ],
      "answer": 0,
      "explanation": "The goal is to align the occlusal plane and skull base so the dens and C1\u2013C2 are seen without superimposition."
    },
    {
      "id": "Q37",
      "domain": "Patient Care",
      "stem": "During a portable exam in an isolation room, the most appropriate workflow is to:",
      "choices": [
        "Don appropriate PPE before entry and disinfect equipment per protocol after the exam",
        "Bring minimal PPE to save time and clean later",
        "Reuse PPE between isolation rooms if no visible contamination",
        "Disinfect only the detector and ignore the portable unit handles"
      ],
      "answer": 0,
      "explanation": "Isolation procedures require correct PPE and thorough disinfection of all contact surfaces on equipment according to policy."
    },
    {
      "id": "Q38",
      "domain": "Ethics and Law",
      "stem": "A student technologist takes a phone photo of an image on the workstation to study later, without patient identifiers visible. This action is:",
      "choices": [
        "Not acceptable, because it can violate privacy and facility policy",
        "Acceptable if no identifiers are visible",
        "Required for educational competence",
        "Acceptable only if shared on social media privately"
      ],
      "answer": 0,
      "explanation": "Photography of clinical images on personal devices is typically prohibited by policy and can create privacy and data security risk even if identifiers are not obvious."
    },
    {
      "id": "Q39",
      "domain": "Ethics and Law",
      "stem": "Which scenario best reflects the ALARA principle in routine imaging?",
      "choices": [
        "Use the lowest technique that yields diagnostic quality and avoid repeats",
        "Use higher technique than necessary to ensure very high exposure indicator",
        "Increase field size to avoid repeats due to clipping",
        "Avoid shielding and collimation because they may obscure anatomy"
      ],
      "answer": 0,
      "explanation": "ALARA focuses on minimizing dose while achieving diagnostic quality, with collimation, technique optimization, and repeat reduction."
    },
    {
      "id": "Q40",
      "domain": "Contrast and Pharmacology",
      "stem": "Which symptom is more consistent with a severe contrast reaction than a mild reaction?",
      "choices": [
        "Wheezing or stridor",
        "Limited nausea",
        "A few hives with stable vitals",
        "Warm sensation"
      ],
      "answer": 0,
      "explanation": "Airway compromise (wheezing/stridor) suggests a severe reaction requiring immediate emergency response. Nausea, warmth, and limited hives are often mild but still require monitoring and policy-based escalation."
    },
    {
      "id": "Q41",
      "domain": "Digital Imaging",
      "stem": "In digital radiography, why is tight collimation still important even though images can be cropped electronically?",
      "choices": [
        "Because it reduces patient exposure and scatter, improving image quality",
        "Because electronic cropping automatically lowers dose",
        "Because cropping prevents motion blur",
        "Because cropping increases spatial resolution"
      ],
      "answer": 0,
      "explanation": "Electronic cropping does not reduce patient dose. Physical collimation reduces exposed tissue and scatter and improves contrast."
    },
    {
      "id": "Q42",
      "domain": "Image Quality",
      "stem": "Which factor most directly increases subject contrast in radiography?",
      "choices": [
        "Lower kVp (within diagnostic limits)",
        "Higher kVp",
        "Higher SID",
        "Using a larger focal spot"
      ],
      "answer": 0,
      "explanation": "Lower kVp increases differential attenuation and subject contrast, producing a shorter gray scale. The other options do not primarily increase subject contrast."
    },
    {
      "id": "Q43",
      "domain": "Image Quality",
      "stem": "A grid is primarily used to:",
      "choices": [
        "Reduce scatter reaching the detector",
        "Increase spatial resolution by reducing pixel size",
        "Reduce motion blur",
        "Increase magnification"
      ],
      "answer": 0,
      "explanation": "Grids improve contrast by absorbing scatter before it reaches the detector. They do not change pixel size, motion, or magnification."
    },
    {
      "id": "Q44",
      "domain": "Image Quality",
      "stem": "Grid cutoff is most likely when:",
      "choices": [
        "The grid is off-level or off-center relative to the x-ray beam",
        "kVp is too low",
        "mAs is too high",
        "The patient is too thin"
      ],
      "answer": 0,
      "explanation": "Improper alignment (off-level, off-center, or wrong SID with focused grids) can cause grid cutoff, reducing receptor exposure in parts of the image."
    },
    {
      "id": "Q45",
      "domain": "Positioning: Wrist/Hand",
      "stem": "For a PA hand radiograph, the central ray is typically directed to the:",
      "choices": [
        "Third metacarpophalangeal (MCP) joint",
        "Ulnar styloid",
        "Second MCP joint",
        "Anatomic snuffbox"
      ],
      "answer": 0,
      "explanation": "A standard PA hand is centered at the third MCP joint to include the entire hand and digits when properly collimated."
    },
    {
      "id": "Q46",
      "domain": "Positioning: Wrist/Hand",
      "stem": "To demonstrate the scaphoid most clearly when a fracture is suspected, the best approach is to:",
      "choices": [
        "Use a PA wrist with ulnar deviation and additional scaphoid views per protocol",
        "Use only a lateral wrist",
        "Use an AP pelvis technique chart",
        "Collimate broadly to include the elbow"
      ],
      "answer": 0,
      "explanation": "Scaphoid evaluation commonly includes ulnar deviation and dedicated scaphoid series views to elongate and better visualize the scaphoid."
    },
    {
      "id": "Q47",
      "domain": "Quality Assurance",
      "stem": "A consistent overall dark appearance on multiple DR exams with normal positioning most likely indicates:",
      "choices": [
        "Technique factors too high or incorrect exposure index target",
        "Insufficient mAs",
        "Excessive OID",
        "Grid cutoff due to off-level"
      ],
      "answer": 0,
      "explanation": "If many exams appear overly dark and exposure indicators suggest overexposure, technique factors or exposure index targets may be too high. Grid cutoff typically causes localized underexposure, not uniform darkness."
    },
    {
      "id": "Q48",
      "domain": "Patient Care",
      "stem": "A patient with possible cervical spine injury arrives from the ED on a backboard. The technologist should:",
      "choices": [
        "Maintain spinal precautions and follow the trauma imaging protocol",
        "Remove the collar to improve positioning",
        "Sit the patient upright for a better lateral",
        "Ask the patient to rotate the head for the odontoid"
      ],
      "answer": 0,
      "explanation": "Potential C-spine injury requires immobilization, trauma protocol projections, and coordination with the care team. Removing collars or encouraging motion is unsafe."
    },
    {
      "id": "Q49",
      "domain": "Radiation Protection",
      "stem": "For staff protection during mobile radiography, the best practice is to:",
      "choices": [
        "Maximize distance and use shielding when available",
        "Stand next to the tube to monitor exposure",
        "Hold the detector for every exam to prevent repeats",
        "Use higher kVp because it reduces scatter"
      ],
      "answer": 0,
      "explanation": "Distance is a powerful protective factor (inverse square relationship), and shielding further reduces exposure. Staff should avoid holding detectors when possible and follow policy. Higher kVp can increase scatter; it is not a protection strategy."
    },
    {
      "id": "Q50",
      "domain": "Professional Practice",
      "stem": "When a requested projection seems inappropriate for the clinical question, the technologist should:",
      "choices": [
        "Communicate with the radiologist or ordering provider per protocol to clarify the request",
        "Refuse the exam and document refusal only",
        "Perform any projection requested without question",
        "Decide to substitute a different exam without informing anyone"
      ],
      "answer": 0,
      "explanation": "Professional practice requires clarification through appropriate channels. Technologists should not unilaterally refuse or substitute without communication and protocol alignment."
    }
  ],
  "suggested_reading": {
    "Radiation Protection": [
      "Bushong, S. C. Radiologic Science for Technologists (latest edition): chapters on radiation biology and protection.",
      "NCRP guidance relevant to diagnostic radiology dose optimization (institutional access)."
    ],
    "Radiation Physics": [
      "Bushong, S. C. Radiologic Science for Technologists: x-ray production and interactions."
    ],
    "Image Quality": [
      "Carlton, R. R., & Adler, A. M. Principles of Radiographic Imaging: exposure, contrast, resolution, noise."
    ],
    "Digital Imaging": [
      "Seeram, E. Digital Radiography: detector technology, exposure indicators, artifacts."
    ],
    "Quality Assurance": [
      "AAPM resources for imaging QA concepts and artifact troubleshooting (institutional access)."
    ],
    "Patient Care": [
      "Ehrlich, R. A., & Daly, J. A. Patient Care in Radiography: communication, safety, reactions."
    ],
    "Infection Control": [
      "CDC Standard Precautions guidance (clinical training materials)."
    ],
    "Ethics and Law": [
      "ARRT Standards of Ethics and institutional privacy/security policy."
    ],
    "Contrast and Pharmacology": [
      "ACR Manual on Contrast Media (current edition): reaction recognition and management."
    ],
    "Positioning: Chest": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: chest positioning."
    ],
    "Positioning: Abdomen": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: abdomen positioning."
    ],
    "Positioning: Spine": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: spine positioning."
    ],
    "Positioning: Cervical Spine": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: cervical spine positioning."
    ],
    "Positioning: Upper Extremity": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: upper extremity positioning."
    ],
    "Positioning: Lower Extremity": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: lower extremity positioning."
    ],
    "Positioning: Skull/Sinuses": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: skull and facial bones."
    ],
    "Positioning: Shoulder": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: shoulder girdle."
    ],
    "Positioning: Hip": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: pelvis and hip."
    ],
    "Positioning: Wrist/Hand": [
      "Merrill's Atlas of Radiographic Positioning & Procedures: hand and wrist."
    ],
    "Professional Practice": [
      "ASRT educational standards and departmental policy on protocol clarification."
    ]
  }
}

Radiography Student Practice Test Study Guide Download

Kelly Emrick, DHSc, PhD, MBA

Kelly Emrick, DHSc, PhD, MBA