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Questions and Answers
What is the minimum SID required for lateral-mediolateral or lateromedial projections of the toes?
What is the minimum SID required for lateral-mediolateral or lateromedial projections of the toes?
- 40 inches (correct)
- 30 inches
- 60 inches
- 50 inches
In which clinical indications would lateromedial projections be particularly useful?
In which clinical indications would lateromedial projections be particularly useful?
- Spinal disc herniation
- Ligament tears in the knee
- Rotator cuff injuries
- Fractures of the phalanges of the toes (correct)
Where should the CR be directed for the first digit during the projection?
Where should the CR be directed for the first digit during the projection?
- To the interphalangeal joint (correct)
- To the metatarsophalangeal joint
- To the distal phalanx
- To the proximal interphalangeal joint
What adjustment is necessary for collimation during the examination?
What adjustment is necessary for collimation during the examination?
What positioning adjustment should be made for the fourth and fifth digits?
What positioning adjustment should be made for the fourth and fifth digits?
What feature indicates optimal exposure in the radiographic images?
What feature indicates optimal exposure in the radiographic images?
In evaluating the positioning of the digit, what should be aligned with the long axis of the image receptor?
In evaluating the positioning of the digit, what should be aligned with the long axis of the image receptor?
What is the recommended kVp range for taking lateral-mediolateral or lateromedial projections of the toes?
What is the recommended kVp range for taking lateral-mediolateral or lateromedial projections of the toes?
What is the minimum Source-Image Distance (SID) required for an AP projection of the foot?
What is the minimum Source-Image Distance (SID) required for an AP projection of the foot?
Which part of the patient's position is NOT required for the AP projection of the foot?
Which part of the patient's position is NOT required for the AP projection of the foot?
What angle should the Central Ray (CR) be directed for the AP projection of the foot?
What angle should the Central Ray (CR) be directed for the AP projection of the foot?
Which of the following is a clinical indication for performing an AP projection of the foot?
Which of the following is a clinical indication for performing an AP projection of the foot?
What is the recommended IR size for the AP projection of the foot?
What is the recommended IR size for the AP projection of the foot?
Which criterion is essential for evaluating the AP projection of the foot?
Which criterion is essential for evaluating the AP projection of the foot?
What should be done for a high arch when performing the AP projection of the foot?
What should be done for a high arch when performing the AP projection of the foot?
What is the primary purpose of shielding during the AP projection of the foot?
What is the primary purpose of shielding during the AP projection of the foot?
What is the minimum SID recommended for an AP projection of the toes?
What is the minimum SID recommended for an AP projection of the toes?
Which pathologies are specifically mentioned for the AP projection of toes?
Which pathologies are specifically mentioned for the AP projection of toes?
How should the CR be angled for the AP projection of the toes?
How should the CR be angled for the AP projection of the toes?
What is the primary reason for using the tangential projection of the toes?
What is the primary reason for using the tangential projection of the toes?
What should be included in the collimation for the AP projection of a toe?
What should be included in the collimation for the AP projection of a toe?
Which aspect is evaluated to ensure no rotation in the AP projection of the toes?
Which aspect is evaluated to ensure no rotation in the AP projection of the toes?
What is the minimum required source-to-image distance (SID) for this projection?
What is the minimum required source-to-image distance (SID) for this projection?
What is the recommended Image receptor (IR) size for the AP projection of the toes?
What is the recommended Image receptor (IR) size for the AP projection of the toes?
What patient position is recommended for the tangential projection?
What patient position is recommended for the tangential projection?
What should the evaluation criteria indicate about joint spaces in the AP projection?
What should the evaluation criteria indicate about joint spaces in the AP projection?
Which of the following describes the correct angulation of the central ray (CR) for the tangential projection?
Which of the following describes the correct angulation of the central ray (CR) for the tangential projection?
Why is close collimation important in digital radiography for the AP projection of the toes?
Why is close collimation important in digital radiography for the AP projection of the toes?
What angle should the plantar surface of the foot form relative to the vertical during positioning?
What angle should the plantar surface of the foot form relative to the vertical during positioning?
Which of the following should be visible in the evaluation criteria for the tangential projection?
Which of the following should be visible in the evaluation criteria for the tangential projection?
What condition is noted regarding the pain experienced by the patient during positioning?
What condition is noted regarding the pain experienced by the patient during positioning?
If a patient cannot tolerate the prone position, what alternative projection can be used?
If a patient cannot tolerate the prone position, what alternative projection can be used?
What size should the imaging receptor (IR) be for the tangential projection?
What size should the imaging receptor (IR) be for the tangential projection?
Which of the following factors should be ensured for optimal exposure during the tangential projection?
Which of the following factors should be ensured for optimal exposure during the tangential projection?
What is the minimum source-to-image distance (SID) for an AP oblique projection of the toes?
What is the minimum source-to-image distance (SID) for an AP oblique projection of the toes?
Which digit requires medial rotation for optimal positioning in an AP oblique projection?
Which digit requires medial rotation for optimal positioning in an AP oblique projection?
What should be the alignment of the long axis of the digit in relation to the IR?
What should be the alignment of the long axis of the digit in relation to the IR?
Which of the following is NOT a clinical indication for an AP oblique projection of the toes?
Which of the following is NOT a clinical indication for an AP oblique projection of the toes?
What is the recommended collimation for the AP oblique projection of the toes?
What is the recommended collimation for the AP oblique projection of the toes?
What angle is recommended for lateral rotation of the foot for the fourth and fifth digits?
What angle is recommended for lateral rotation of the foot for the fourth and fifth digits?
Which of the following indicates that motion is present during the examination?
Which of the following indicates that motion is present during the examination?
What should be used to prevent motion during the AP oblique projection?
What should be used to prevent motion during the AP oblique projection?
Which imaging modality is primarily used to evaluate soft tissue injuries in the lower limbs?
Which imaging modality is primarily used to evaluate soft tissue injuries in the lower limbs?
What condition is characterized by cartilage softening under the patella, leading to pain and tenderness?
What condition is characterized by cartilage softening under the patella, leading to pain and tenderness?
Which of the following is primarily used to measure bone density in patients?
Which of the following is primarily used to measure bone density in patients?
What is a common feature of Ewing Sarcoma as detected on radiographs?
What is a common feature of Ewing Sarcoma as detected on radiographs?
What benign tumor typically appears in small bones of the hands and feet in adolescents and young adults?
What benign tumor typically appears in small bones of the hands and feet in adolescents and young adults?
Which condition is known to cause inflammation of the bone and cartilage affecting the anterior proximal tibia?
Which condition is known to cause inflammation of the bone and cartilage affecting the anterior proximal tibia?
What imaging method is helpful for detecting osteomyelitis and metastatic bone lesions?
What imaging method is helpful for detecting osteomyelitis and metastatic bone lesions?
Which of the following conditions involves the accumulation of fluid in the joint cavity?
Which of the following conditions involves the accumulation of fluid in the joint cavity?
Which type of bone tumor is more common in individuals aged 40-70 arising from plasma cells?
Which type of bone tumor is more common in individuals aged 40-70 arising from plasma cells?
What condition involves excessive uric acid in the blood and commonly affects the first metatarsophalangeal joint?
What condition involves excessive uric acid in the blood and commonly affects the first metatarsophalangeal joint?
What condition is characterized by bone softening due to a lack of mineralization?
What condition is characterized by bone softening due to a lack of mineralization?
What is a common radiographic appearance of Paget's disease?
What is a common radiographic appearance of Paget's disease?
Which of the following conditions leads to excessive production of soft but dense bone?
Which of the following conditions leads to excessive production of soft but dense bone?
What is a common radiographic examination for osteomalacia?
What is a common radiographic examination for osteomalacia?
What exposure factor adjustment is often required for osteomalacia?
What exposure factor adjustment is often required for osteomalacia?
Which of the following best describes Ewing sarcoma on imaging?
Which of the following best describes Ewing sarcoma on imaging?
Which condition shows a classic 'sunburst' pattern in imaging?
Which condition shows a classic 'sunburst' pattern in imaging?
Which condition is NOT typically associated with bone loss or destruction?
Which condition is NOT typically associated with bone loss or destruction?
In which condition are uric acid deposits typically found in the joint space?
In which condition are uric acid deposits typically found in the joint space?
What is a characteristic of osteoclastoma as seen on radiograph?
What is a characteristic of osteoclastoma as seen on radiograph?
What is the recommended source-image receptor distance (SID) for lower limb radiography?
What is the recommended source-image receptor distance (SID) for lower limb radiography?
Which practice is essential when radiographing the lower limb to protect sensitive regions?
Which practice is essential when radiographing the lower limb to protect sensitive regions?
What should be done to maintain constant SID when using IRs directly on the tabletop?
What should be done to maintain constant SID when using IRs directly on the tabletop?
Which position should the long axis of the part being radiographed generally be in relation to the IR?
Which position should the long axis of the part being radiographed generally be in relation to the IR?
Why is collimation important in lower limb radiography?
Why is collimation important in lower limb radiography?
What is the recommended practice for images on a single digital imaging plate?
What is the recommended practice for images on a single digital imaging plate?
What should be done to prevent distortion in lower limb radiography?
What should be done to prevent distortion in lower limb radiography?
When are grids generally used in lower limb radiography?
When are grids generally used in lower limb radiography?
What is a common exposure factor for lower limb radiographs?
What is a common exposure factor for lower limb radiographs?
Which imaging plate is commonly used for examinations distal to the knee?
Which imaging plate is commonly used for examinations distal to the knee?
What adjustment should be made for pediatric patients due to their tissue characteristics?
What adjustment should be made for pediatric patients due to their tissue characteristics?
Which position-related concern is crucial when treating geriatric patients?
Which position-related concern is crucial when treating geriatric patients?
What element is essential for obtaining radiographic quality in bariatric patients?
What element is essential for obtaining radiographic quality in bariatric patients?
When imaging a lower limb with a cast, what is the recommended increase in exposure for a large plaster cast?
When imaging a lower limb with a cast, what is the recommended increase in exposure for a large plaster cast?
What classification of joint is the distal tibiofibular joint?
What classification of joint is the distal tibiofibular joint?
What is the purpose of using grids in digital imaging for thicker anatomy?
What is the purpose of using grids in digital imaging for thicker anatomy?
Which surface of the foot is referred to as the dorsum?
Which surface of the foot is referred to as the dorsum?
What is the minimum kVp value recommended for most digital imaging cases?
What is the minimum kVp value recommended for most digital imaging cases?
What type of movement does plantar flexion involve?
What type of movement does plantar flexion involve?
Which is a recommended practice when using four-sided collimation for radiography?
Which is a recommended practice when using four-sided collimation for radiography?
What does the ALARA principle emphasize in radiographic imaging?
What does the ALARA principle emphasize in radiographic imaging?
Which joint type does the ankle joint represent?
Which joint type does the ankle joint represent?
What should be considered when imaging knees in bariatric patients?
What should be considered when imaging knees in bariatric patients?
What type of movements do intertarsal joints primarily provide?
What type of movements do intertarsal joints primarily provide?
Which of the following describes dorsiflexion?
Which of the following describes dorsiflexion?
Which aids can be used to enhance patient comfort during imaging?
Which aids can be used to enhance patient comfort during imaging?
Which statement is true about the interphalangeal joints?
Which statement is true about the interphalangeal joints?
What is the function of the fibrous capsule in synovial joints?
What is the function of the fibrous capsule in synovial joints?
Which motions are not allowed by the tibiofibular joint?
Which motions are not allowed by the tibiofibular joint?
What are the primary movements that the ankle joint permits?
What are the primary movements that the ankle joint permits?
Flashcards
AP Oblique Toe Projection
AP Oblique Toe Projection
A radiographic technique used to visualize specific toes for diagnosis of fractures, dislocations, or pathologies such as osteoarthritis.
Medial Rotation
Medial Rotation
Rotating the foot and leg 30° to 45° inwards towards the midline of the body, typically for visualizing the 1st, 2nd, and 3rd toes.
Lateral Rotation
Lateral Rotation
Rotating the foot and leg 30° to 45° outwards away from the midline of the body, typically for visualizing the 4th and 5th toes.
MTP Joint
MTP Joint
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Distal Half of Metatarsals
Distal Half of Metatarsals
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Collimate to Area of Interest
Collimate to Area of Interest
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Optimal Contrast and Density
Optimal Contrast and Density
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No Motion
No Motion
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AP Foot Projection
AP Foot Projection
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Clinical Indications for AP Foot
Clinical Indications for AP Foot
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SID for AP Foot
SID for AP Foot
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CR Angle in AP Foot
CR Angle in AP Foot
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Patient Position for AP Foot
Patient Position for AP Foot
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Collimation for AP Foot
Collimation for AP Foot
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Evaluation Criteria for AP Foot
Evaluation Criteria for AP Foot
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Exposure for AP Foot
Exposure for AP Foot
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Tangential Projection
Tangential Projection
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Sesamoid Bones
Sesamoid Bones
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First Metatarsophalangeal (MTP) Joint
First Metatarsophalangeal (MTP) Joint
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Dorsiflexion
Dorsiflexion
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Technical Factors
Technical Factors
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Shielding
Shielding
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Patient Position
Patient Position
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Central Ray (CR)
Central Ray (CR)
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Collimation
Collimation
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Evaluation Criteria
Evaluation Criteria
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AP Projection: Toes
AP Projection: Toes
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Technical Factors for AP Toes
Technical Factors for AP Toes
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Shielding for AP Toes
Shielding for AP Toes
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Positioning for AP Toes
Positioning for AP Toes
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CR Angulation for AP Toes
CR Angulation for AP Toes
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Evaluation of AP Toes
Evaluation of AP Toes
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Lateral-Mediolateral Projections: Toes
Lateral-Mediolateral Projections: Toes
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Clinical Indications
Clinical Indications
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Patient Positioning: Lateromedial
Patient Positioning: Lateromedial
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Patient Positioning: Mediolateral
Patient Positioning: Mediolateral
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CR Direction
CR Direction
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Osteomalacia
Osteomalacia
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Rickets
Rickets
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Paget Disease
Paget Disease
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Bone Softening
Bone Softening
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Lytic Areas
Lytic Areas
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Sclerotic Areas
Sclerotic Areas
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Cotton Wool Appearance
Cotton Wool Appearance
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Common Paget Disease Locations
Common Paget Disease Locations
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Exposure Factor Adjustment in Osteomalacia
Exposure Factor Adjustment in Osteomalacia
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Exposure Factor Adjustment in Paget Disease
Exposure Factor Adjustment in Paget Disease
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Arthrography
Arthrography
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CT Scan
CT Scan
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MRI
MRI
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What is Bone Densitometry used for?
What is Bone Densitometry used for?
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Nuclear Medicine
Nuclear Medicine
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Bone Cyst
Bone Cyst
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Chondromalacia Patellae
Chondromalacia Patellae
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Osteoarthritis
Osteoarthritis
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Gout
Gout
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Lisfranc Ligament Injury
Lisfranc Ligament Injury
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Synovial Joint
Synovial Joint
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Diarthrodial Joint
Diarthrodial Joint
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Fibrous Joint
Fibrous Joint
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Amphiarthrodial Joint
Amphiarthrodial Joint
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Plantar Flexion
Plantar Flexion
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Inversion
Inversion
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Eversion
Eversion
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Ginglymus (Hinge) Joint
Ginglymus (Hinge) Joint
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Modified Ellipsoidal (Condyloid) Joint
Modified Ellipsoidal (Condyloid) Joint
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SID for lower limb
SID for lower limb
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Shielding in lower limb radiography
Shielding in lower limb radiography
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Collimation in lower limb radiography
Collimation in lower limb radiography
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General positioning for lower limb radiography
General positioning for lower limb radiography
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Centering in lower limb radiography
Centering in lower limb radiography
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Pediatric Exposure Factors
Pediatric Exposure Factors
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Multiple images on the same imaging plate
Multiple images on the same imaging plate
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Geriatric Exposure Factors
Geriatric Exposure Factors
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Exposure factors for lower limb radiography
Exposure factors for lower limb radiography
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Bariatric Clothing Artifact
Bariatric Clothing Artifact
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Image receptors for lower limb radiography
Image receptors for lower limb radiography
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Grids in lower limb radiography
Grids in lower limb radiography
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Bariatric Central Ray
Bariatric Central Ray
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Bariatric Grid Use
Bariatric Grid Use
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Grids for the knee
Grids for the knee
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Cast Exposure Increase
Cast Exposure Increase
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Four-sided Collimation
Four-sided Collimation
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Grid Use with Cassette-less Systems
Grid Use with Cassette-less Systems
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Exposure Factors: ALARA
Exposure Factors: ALARA
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Post-processing Evaluation
Post-processing Evaluation
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Study Notes
Clinical Indications
- Fractures or dislocations of the phalanges of the digits in question
- Pathologies such as osteoarthritis and gouty arthritis (gout), especially in the first digit
Technical Factors
- Minimum SID—40 inches (100 cm)
- IR size—8 × 10 inches (18 × 24 cm)
- Landscape
- Kvp range: 50-60
Shielding
- Shield radio-sensitive tissues outside region of interest.
Patient Position
- Place patient supine or seated on table; knee should be flexed with plantar surface of foot resting on IR
Part Position
- Center and align long axis of digit to CR and long axis of portion of IR being exposed.
- Ensure that MTP joint of digit in question is centered to CR.
- Rotate the leg and foot 30° to 45° medially for the first, second, and third digits (Fig. 6.43) and laterally for the fourth and fifth digits (Fig. 6.44).
- Use 45° radiolucent support under elevated portion of foot to obviate.
CR
- CR perpendicular to IR, directed to MTP joint in question
Recommended Collimation
- Colliate closely to area of interest.
- Include at least the first, second, and third distal metatarsals for possible sesamoids but CR at first MTP joint.
Computed Radiography or Digital Radiography
- Close collimation is important over unexposed portions of IR to prevent fogging from scatter radiation.
Evaluation Criteria
- Anatomy Demonstrated: Digits in question and distal half of metatarsals should be included without overlap (superimposition).
- Position: Long axis of foot aligned to long axis of portion of IR being exposed.
- No rotation: Rotation is present if shafts of the phalanges and distal metatarsals appear equally concave on both sides.
- Correct obliquity: Side with increased concavity has been rolled away from IR.
- No motion: as evidenced by sharply defined cortical margins of bone and detailed bony trabeculae.
- Exposure: Optimal contrast and density (brightness) allow visualization of bony cortical margins and trabeculae and soft tissue structures.
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Description
This quiz focuses on the essential techniques for lateral-mediolateral and lateromedial projections of the toes. It covers minimum SID requirements, clinical indications, CR direction, collimation adjustments, and optimal exposure criteria. Test your knowledge on best practices for toe radiographic examinations.