When taking X Rays of the Lumbar and Pelvis, what are the most common images?

Oblique Posterior, L5-S1 Spot Lateral and AP

When taking an Oblique Lumbar Spine x ray image, how should the patient be positioned and where should the central ray be focused?

AP, at an angle of 30-45 degrees to the Bucky and the Central Ray should be focused through 1" above the Iliac crest

AP, at an angle of 15-20degrees to the Bucky and the Central Ray should be focused through 1.5" above the Iliac crest

PA, at an angle of 15-20 degrees to the Bucky and the Central Ray should be focused through 1" above the Iliac crest

PA, at an angle of 30-45 degrees to the Bucky and the Central Ray should be focused through 1.5" above the Iliac crest

When doing an AP Pelvis view, how should the patient position their feet?

However is most comfortable for the patient

When taking a Lumbar x ray, how should the collimation generally be set?

1" inside the film size on all sides

Which of the Lumbar and Sacral x ray views involves a tube tilt of 15 degrees?

AP Lumbo-Pelvic & Lateral Lumbar

Oblique Lumbar Spine, Posterior Position

When taking the AP Lumbar x ray image, how should the patient be positioned and what should their instructions be?

Standing, arms at side, "Take a deep breath in, push it out, hold it out, and stay very still"

Sitting, arms at side, "Take a deep breath in, push it out, hold it out, and stay very still"

Sitting, humeri parallel to the floor, "Take a deep breath in, hold it in, and stay very still"

Standing, humeri parallel to the floor, "Take a deep breath in, hold it in, and stay very still"

When taking a L5-S1 Spot, a L5-S1 AP Spot, or an AP Pelvis view of the spine, what are the ideal patient instructions?

"Hold your breath and stay very still"

"Take a deep breath in, push it out, hold it out, and stay very still"

"Take a deep breath in, hold it in, and stay very still"

"Take shallow breaths and stay very still"

When taking the Lateral Lumbar x ray image, how should the patient be positioned and what should their instructions be?

Standing, humeri parallel to the floor, "Take a deep breath in, push it out, hold it out, and stay very still"

Standing, arms at sides, "Take a deep breath in, hold it in, and stay very still"

Standing, humeri parallel to the floor, "Take a deep breath in, hold it in, and stay very still"

Sitting, arms at sides, "Take a deep breath in, push it out, hold it out, and stay very still"

Positioning For Lumbar And Sacral Spine X Rays

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| By Whclinic

Whclinic

Community Contributor

Quizzes Created: 3 | Total Attempts: 9,651

Questions: 11 | Attempts: 1,015 | Updated: Mar 21, 2023

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Test to practice taking X Ray images of the cervical spine. Practice Tube Tilt, Distance, KVP levels, and Positioning.

Questions and Answers

1.

When taking the Lateral Lumbar x ray, where should the central ray be positioned?
- A.
  
  1-2" below the Iliac crest
- B.
  
  1" above the Iliac crest
- C.
  
  L1
- D.
  
  Either B or C
Correct Answer
B. 1" above the Iliac crest

Explanation
The correct answer is 1" above the Iliac crest. This is the optimal position for the central ray when taking a Lateral Lumbar x-ray. Placing the central ray 1" above the Iliac crest ensures that the lumbar vertebrae are properly visualized on the x-ray image.

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2.

When taking X Rays of the Lumbar and Pelvis, what are the most common images?
- A.
  
  AP, Lateral
- B.
  
  Oblique Posterior, L5-S1 Spot Lateral and AP
- C.
  
  AP Pelvis
- D.
  
  A and C
- E.
  
  All of the Above
Correct Answer
E. All of the Above

Explanation
The most common images when taking X-rays of the Lumbar and Pelvis are AP (Anteroposterior) and Lateral views. The AP view provides a front-to-back image of the lumbar and pelvis region, while the lateral view provides a side view. Additionally, oblique posterior and L5-S1 spot lateral views may also be taken to provide more specific views of certain areas. Therefore, the correct answer is "All of the Above."

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3.

When taking an Oblique Lumbar Spine x ray image, how should the patient be positioned and where should the central ray be focused?
- A.
  
  AP, at an angle of 15-20degrees to the Bucky and the Central Ray should be focused through 1.5" above the Iliac crest
- B.
  
  PA, at an angle of 15-20 degrees to the Bucky and the Central Ray should be focused through 1" above the Iliac crest
- C.
  
  AP, at an angle of 30-45 degrees to the Bucky and the Central Ray should be focused through 1" above the Iliac crest
- D.
  
  PA, at an angle of 30-45 degrees to the Bucky and the Central Ray should be focused through 1.5" above the Iliac crest
Correct Answer
C. AP, at an angle of 30-45 degrees to the Bucky and the Central Ray should be focused through 1" above the Iliac crest

Explanation
The correct answer is AP, at an angle of 30-45 degrees to the Bucky and the Central Ray should be focused through 1" above the Iliac crest. In an Oblique Lumbar Spine x-ray image, the patient should be positioned in an AP (Anteroposterior) position. The central ray should be angled at 30-45 degrees to the Bucky, providing a oblique view of the lumbar spine. Additionally, the central ray should be focused through 1" above the Iliac crest, which is the bony prominence at the top of the hip bone. This positioning and angulation allows for a clear visualization of the lumbar spine in an oblique view.

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4.

When doing an AP Pelvis view, how should the patient position their feet?
- A.
  
  However is most comfortable for the patient
- B.
  
  Rotate towards the outside
- C.
  
  Rotate towards the inside
- D.
  
  One foot in front of the other
Correct Answer
C. Rotate towards the inside

Explanation
The correct answer is to rotate the feet towards the inside. This positioning is important in an AP Pelvis view because it helps to align the femoral necks parallel to the image receptor. By rotating the feet towards the inside, the femoral necks will be in a more neutral position, allowing for better visualization of the pelvis and hip joints.

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5.

When taking an AP or Lateral x ray of the lumbar area, what is the OID and the KVP settings?
- A.
  
  40" and 80 kvp
- B.
  
  40" and 90 kvp
- C.
  
  72" and 80 kvp
- D.
  
  72" and 90 kvp
Correct Answer
B. 40" and 90 kvp

Explanation
The correct answer is 40" and 90 kvp. In radiography, OID refers to the object-to-image distance, which is the distance between the object being imaged and the image receptor. In this case, the OID is 40", indicating that the lumbar area is 40 inches away from the image receptor. KVP, on the other hand, stands for kilovolt peak and refers to the amount of voltage applied to the x-ray tube. The correct setting for KVP is 90, indicating that 90 kilovolts are being used for the x-ray exposure.

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6.

When taking a Lumbar x ray, how should the collimation generally be set?
- A.
  
  1" inside the film size on all sides
- B.
  
  7" x 17"
- C.
  
  10" x 17"
- D.
  
  To the film size
Correct Answer
D. To the film size

Explanation
The collimation should generally be set to the film size when taking a Lumbar x-ray. This means that the collimation should be adjusted to match the size of the film being used. This ensures that only the necessary area is exposed to radiation, reducing unnecessary radiation exposure to the patient and improving image quality by reducing scatter radiation.

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7.

Which of the Lumbar and Sacral x ray views involves a tube tilt of 15 degrees?
- A.
  
  AP Lumbo-Pelvic & Lateral Lumbar
- B.
  
  AP Pelvis & L5-S1 Spot
- C.
  
  Oblique Lumbar Spine, Posterior Position
- D.
  
  L5-S1 Spot AP
- E.
  
  A and B
Correct Answer
D. L5-S1 Spot AP

Explanation
The L5-S1 Spot AP view involves a tube tilt of 15 degrees.

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8.

When taking the AP Lumbar x ray image, how should the patient be positioned and what should their instructions be?
- A.
  
  Sitting, arms at side, "Take a deep breath in, push it out, hold it out, and stay very still"
- B.
  
  Sitting, humeri parallel to the floor, "Take a deep breath in, hold it in, and stay very still"
- C.
  
  Standing, arms at side, "Take a deep breath in, push it out, hold it out, and stay very still"
- D.
  
  Standing, humeri parallel to the floor, "Take a deep breath in, hold it in, and stay very still"
Correct Answer
C. Standing, arms at side, "Take a deep breath in, push it out, hold it out, and stay very still"

Explanation
The correct answer is standing with arms at the side and the instruction to take a deep breath in, push it out, hold it out, and stay very still. This position and instruction are appropriate for an AP Lumbar x-ray image because standing allows for better visualization of the lumbar spine and surrounding structures. The arms at the side help to minimize any interference with the image. Taking a deep breath in and pushing it out helps to ensure that the diaphragm is in a consistent position, and holding the breath and staying still minimizes motion artifacts on the image.

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9.

When taking a L5-S1 Spot, a L5-S1 AP Spot, or an AP Pelvis view of the spine, what are the ideal patient instructions?
- A.
  
  "Take a deep breath in, push it out, hold it out, and stay very still"
- B.
  
  "Take a deep breath in, hold it in, and stay very still"
- C.
  
  "Take shallow breaths and stay very still"
- D.
  
  "Hold your breath and stay very still"
Correct Answer
D. "Hold your breath and stay very still"

Explanation
The ideal patient instructions for taking a L5-S1 Spot, a L5-S1 AP Spot, or an AP Pelvis view of the spine is to "hold your breath and stay very still." This is because holding the breath helps to minimize motion artifacts and blurring on the X-ray image, ensuring a clear and accurate view of the spine. Staying very still further reduces the risk of any movement that could affect the quality of the image.

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10.

When taking an AP Lumbar x ray image, where should the central ray be focused?
- A.
  
  1" above the Iliac crest
- B.
  
  1-2" below the Iliac crest
- C.
  
  At the belly button
- D.
  
  Halfway between ASIS and PSIS
Correct Answer
B. 1-2" below the Iliac crest

Explanation
The central ray should be focused 1-2" below the Iliac crest when taking an AP Lumbar x-ray image. This is the correct positioning to ensure that the lumbar vertebrae are properly visualized on the x-ray. Focusing the central ray at this specific location allows for accurate assessment of the lumbar spine and any potential abnormalities or injuries.

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11.

When taking the Lateral Lumbar x ray image, how should the patient be positioned and what should their instructions be?
- A.
  
  Standing, arms at sides, "Take a deep breath in, hold it in, and stay very still"
- B.
  
  Standing, humeri parallel to the floor, "Take a deep breath in, push it out, hold it out, and stay very still"
- C.
  
  Standing, humeri parallel to the floor, "Take a deep breath in, hold it in, and stay very still"
- D.
  
  Sitting, arms at sides, "Take a deep breath in, push it out, hold it out, and stay very still"
Correct Answer
B. Standing, humeri parallel to the floor, "Take a deep breath in, push it out, hold it out, and stay very still"