Podcast
Questions and Answers
What does a narrower distance from the left pedicles to the spinous process indicate?
What does a narrower distance from the left pedicles to the spinous process indicate?
- The lumbosacral junction is misaligned.
- The patient is aligned properly.
- The patient has scoliosis.
- The patient was rotated toward the right side. (correct)
What should be done if the superior and inferior articular processes are not in profile?
What should be done if the superior and inferior articular processes are not in profile?
- Decrease the degree of rotation. (correct)
- Position the patient upright.
- Change the imaging angle.
- Increase the degree of rotation.
If the posterior surfaces of the vertebral bodies are not superimposed in a lateral projection, what does this suggest?
If the posterior surfaces of the vertebral bodies are not superimposed in a lateral projection, what does this suggest?
- The right side of the patient was rotated anteriorly. (correct)
- Wrong imaging technique.
- The patient is suffering from a fracture.
- An issue with the contrast used.
What is indicated by pedicles being closer to the vertebral body midline in an AP oblique projection?
What is indicated by pedicles being closer to the vertebral body midline in an AP oblique projection?
In an AP projection, how should the midcoronal plane align for proper imaging?
In an AP projection, how should the midcoronal plane align for proper imaging?
What correction is needed if the patient's right side is rotated anteriorly?
What correction is needed if the patient's right side is rotated anteriorly?
What is the key visual indicator of correct positioning in an AP lumbar spine projection?
What is the key visual indicator of correct positioning in an AP lumbar spine projection?
What is suggested if the zygapophyseal joints are closed in an AP oblique view?
What is suggested if the zygapophyseal joints are closed in an AP oblique view?
What is a necessary correction when the L5 vertebral body is distorted in a lateral projection of the L5-S1 junction?
What is a necessary correction when the L5 vertebral body is distorted in a lateral projection of the L5-S1 junction?
What was likely the reason for the distortion observed in the L5 vertebral body and sacrum during a lateral projection?
What was likely the reason for the distortion observed in the L5 vertebral body and sacrum during a lateral projection?
What adjustment should be made if the cephalic CR angulation is excessive during an AP axial projection of the sacrum?
What adjustment should be made if the cephalic CR angulation is excessive during an AP axial projection of the sacrum?
Which correction is needed when the L5-S1 intervertebral disk space is closed during a lateral projection?
Which correction is needed when the L5-S1 intervertebral disk space is closed during a lateral projection?
When performing an AP axial projection of the coccyx, what is a common error made by the patient?
When performing an AP axial projection of the coccyx, what is a common error made by the patient?
What is indicated by a closed L5-S1 intervertebral disk space in a lateral projection analysis?
What is indicated by a closed L5-S1 intervertebral disk space in a lateral projection analysis?
In lateral projection of the coccyx, what correction should be made if the patient is rotated toward the right side?
In lateral projection of the coccyx, what correction should be made if the patient is rotated toward the right side?
What is the best practice to ensure proper alignment of the lumbar vertebral column during lateral projection?
What is the best practice to ensure proper alignment of the lumbar vertebral column during lateral projection?
What are the two specific types of oblique projections that are considered in the analysis?
What are the two specific types of oblique projections that are considered in the analysis?
What is the name of the joint that connects the superior and inferior articular processes?
What is the name of the joint that connects the superior and inferior articular processes?
In an AP oblique projection, the superior and inferior articular processes should be in profile.
In an AP oblique projection, the superior and inferior articular processes should be in profile.
In a lateral projection, the posterior surfaces of the vertebral bodies should be superimposed.
In a lateral projection, the posterior surfaces of the vertebral bodies should be superimposed.
What is the name of the space between the 5th lumbar vertebra and the sacrum?
What is the name of the space between the 5th lumbar vertebra and the sacrum?
What specific procedure can be performed to correct the rotation of the lumbar vertebrae?
What specific procedure can be performed to correct the rotation of the lumbar vertebrae?
What is the name of the bony projection that allows for the attachment of muscles and tendons to the lumbar vertebrae?
What is the name of the bony projection that allows for the attachment of muscles and tendons to the lumbar vertebrae?
What is the name of the bony structure that forms the joint between the sacrum and the ilium?
What is the name of the bony structure that forms the joint between the sacrum and the ilium?
What is the name of the structure that allows the passage of nerves and blood vessels through the vertebral arch?
What is the name of the structure that allows the passage of nerves and blood vessels through the vertebral arch?
Closing the L5-S1 intervertebral disk space is a sign of a well-positioned lateral lumbar projection.
Closing the L5-S1 intervertebral disk space is a sign of a well-positioned lateral lumbar projection.
What does the AP axial projection of the sacrum show?
What does the AP axial projection of the sacrum show?
What does the lateral projection of the sacrum show?
What does the lateral projection of the sacrum show?
What is the name of the bony structure located at the base of the sacrum?
What is the name of the bony structure located at the base of the sacrum?
The femoral heads should be visible in a lateral projection of the sacrum.
The femoral heads should be visible in a lateral projection of the sacrum.
What are the three coccygeal segments seen in an AP axial projection of the coccyx?
What are the three coccygeal segments seen in an AP axial projection of the coccyx?
In a lateral projection of the coccyx, the greater sciatic notches should be visualized.
In a lateral projection of the coccyx, the greater sciatic notches should be visualized.
What are the critical structures that should be included in a lateral projection of the coccyx?
What are the critical structures that should be included in a lateral projection of the coccyx?
In an AP axial projection of the coccyx, what is the name of the structure that is located below the coccyx?
In an AP axial projection of the coccyx, what is the name of the structure that is located below the coccyx?
Flashcards
Closed L5-S1 Intervertebral Disk Space (Lateral Projection)
Closed L5-S1 Intervertebral Disk Space (Lateral Projection)
The space between the L5 vertebra and the sacrum is closed, indicating potential compression or misalignment.
Distorted L5 Vertebral Body (Lateral Projection)
Distorted L5 Vertebral Body (Lateral Projection)
The positioning of the L5 vertebral body is distorted, often due to incorrect positioning of the patient.
Sagging Lumbar Vertebral Column (Lateral Projection)
Sagging Lumbar Vertebral Column (Lateral Projection)
The lumbar vertebral column is not parallel to the table, leading to inaccurate projection of the L5-S1 joint.
Sacrum Rotation (AP Axial Projection)
Sacrum Rotation (AP Axial Projection)
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Excessive Cephalic CR Angulation (Sacrum, AP Axial)
Excessive Cephalic CR Angulation (Sacrum, AP Axial)
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Sagging Lumbar Vertebral Column (Sacrum, Lateral Projection)
Sagging Lumbar Vertebral Column (Sacrum, Lateral Projection)
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Coccyx Rotation (AP Axial Projection)
Coccyx Rotation (AP Axial Projection)
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Insufficient Caudal CR Angulation (Coccyx, AP Axial)
Insufficient Caudal CR Angulation (Coccyx, AP Axial)
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AP Lumbar Vertebrae Projection
AP Lumbar Vertebrae Projection
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AP Lumbar Rotation Error
AP Lumbar Rotation Error
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Lateral Lumbar Vertebrae Projection
Lateral Lumbar Vertebrae Projection
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Lateral Lumbar Rotation Error
Lateral Lumbar Rotation Error
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L5-S1 Lumbosacral Junction Lateral Projection
L5-S1 Lumbosacral Junction Lateral Projection
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AP Axial Sacrum Projection
AP Axial Sacrum Projection
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Lateral Sacrum Projection
Lateral Sacrum Projection
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AP Axial Coccyx Projection
AP Axial Coccyx Projection
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Where is the obturator internus fat plane located?
Where is the obturator internus fat plane located?
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Where is the iliopsoas fat plane located?
Where is the iliopsoas fat plane located?
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Where is the pericapsular fat plane located?
Where is the pericapsular fat plane located?
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Where is the gluteal fat plane located?
Where is the gluteal fat plane located?
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What are the differences in shape between a male and female pelvis?
What are the differences in shape between a male and female pelvis?
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How do the iliac wings differ in males and females?
How do the iliac wings differ in males and females?
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What's the difference in pubic arch angle between males and females?
What's the difference in pubic arch angle between males and females?
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How does the pelvic inlet differ in males and females?
How does the pelvic inlet differ in males and females?
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How does the obturator foramen differ in males and females?
How does the obturator foramen differ in males and females?
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What is the kV range for an AP pelvis image?
What is the kV range for an AP pelvis image?
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Which AEC cells should be activated for an AP pelvis image?
Which AEC cells should be activated for an AP pelvis image?
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What is the SID for an AP pelvis?
What is the SID for an AP pelvis?
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How should the feet be positioned for an AP pelvis image?
How should the feet be positioned for an AP pelvis image?
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Why do we rotate the toes internally for an AP pelvis?
Why do we rotate the toes internally for an AP pelvis?
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What should be at the center of the exposure field for an AP pelvis?
What should be at the center of the exposure field for an AP pelvis?
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What anatomy must be demonstrated for a good AP pelvis image?
What anatomy must be demonstrated for a good AP pelvis image?
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How should the greater trochanters be seen on an AP pelvis?
How should the greater trochanters be seen on an AP pelvis?
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How should the lesser trochanters be seen on an AP pelvis?
How should the lesser trochanters be seen on an AP pelvis?
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How should the obturator foramina be seen on an AP pelvis?
How should the obturator foramina be seen on an AP pelvis?
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How should the iliac wings be seen on an AP pelvis?
How should the iliac wings be seen on an AP pelvis?
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On an AP pelvis, what plane should be centered on the midline?
On an AP pelvis, what plane should be centered on the midline?
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On an AP pelvis, how do you align the ASIS to ensure the midcoronal plane is parallel to the IR?
On an AP pelvis, how do you align the ASIS to ensure the midcoronal plane is parallel to the IR?
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For longitudinal collimation on an AP pelvis, where should the light field extend?
For longitudinal collimation on an AP pelvis, where should the light field extend?
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For transverse collimation on an AP pelvis, where should the light field extend?
For transverse collimation on an AP pelvis, where should the light field extend?
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On an AP pelvis, if the pelvis is rotated in an LPO position, what happens to the left iliac wing?
On an AP pelvis, if the pelvis is rotated in an LPO position, what happens to the left iliac wing?
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On an AP pelvis, if the pelvis is rotated in an LPO position, what happens to the left obturator foramen?
On an AP pelvis, if the pelvis is rotated in an LPO position, what happens to the left obturator foramen?
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On an AP pelvis, if the pelvis is rotated in an LPO position, what happens to the sacrum/coccyx?
On an AP pelvis, if the pelvis is rotated in an LPO position, what happens to the sacrum/coccyx?
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On an AP pelvis, if the pelvis is rotated in an RPO position, what happens to the sacrum/coccyx?
On an AP pelvis, if the pelvis is rotated in an RPO position, what happens to the sacrum/coccyx?
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Study Notes
Lumbar Vertebrae: AP Projection
- Images of the lumbar vertebrae in an AP projection are used for analysis.
- Proper alignment is crucial to view the anatomical structures correctly.
- Important structures to identify include: transverse processes, superior articular process, pedicles, pars interarticularis, inferior articular processes, lamina, spinous processes, lateral edge of psoas muscle, sacroiliac joint, and sacrum.
- The distance from the left to the right pedicles to spinous processes should be similar to maintain proper image quality.
- Improper rotation can lead to one side having a narrower distance, requiring correction.
AP Oblique Projection (Right and Left Posterior Oblique Positions)
- Images should display the zygapophyseal joints in profile.
- The pedicles should be close to the vertebral body midline.
- The superior and inferior articular processes are not usually apparent in profile.
- Maintaining a rotation of less than 45 degrees helps to view the structures clearly.
- Excessive rotation might obscure important structures, affecting the analysis.
Lateral Projection
- In the lateral projection, the posterior surfaces of the vertebral bodies should not overlap, and the lumbar vertebral bodies' structures are visible in profile. Correct positioning is essential for a clear view of the intervertebral spaces and foramina.
- Ensure the right and left sides of the vertebral bodies are clear, and not superimposed. Incorrect rotation will result in the image being distorted.
L5-S1 Lumbosacral Junction: Lateral Projection
- Assess the L5-S1 intervertebral disc space, which should be open and unaffected in a healthy spine.
- Ensure that the lumbar spine's lateral vertebral body is clearly visible to detect any distortions or misalignments.
- To view the structure clearly, ensure the lumbar vertebral column is vertical.
- Greater sciatic notches and sacrum are also part of the anatomy of interest.
Sacrum: AP Axial Projection
- View from above to assess the sacral body, sacral ala, sacral foramina, median sacral crest, and related sections.
- Proper positioning from the anterior and superior perspective is required for a clear image.
Sacrum: Lateral Projection
- This projection shows features like the greater sciatic notches, sacral canal, and transverse ridges.
- Ensure that the structure is correctly aligned for proper visualization.
Coccyx: AP Axial Projection
- The coccyx, containing the 1st, 2nd, and 3rd coccygeal segments, is visualized in an AP projection.
- Proper alignment is needed.
Coccyx: Lateral Projection
- The greater sciatic notches are key features of interest when assessing the structure and alignment of the coccyx
- Correct positioning is necessary to prevent distortion or misalignment of the coccyx.
- Ensure proper alignment for visualization.
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Description
This quiz focuses on the AP projection, oblique projection, and lateral projection of lumbar vertebrae. It covers key anatomical structures and the importance of proper image alignment for accurate analysis. Test your knowledge on the various projection techniques and their significance in visualizing lumbar anatomy.
