Radiology Lab Rules and PA Chest Procedures

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Questions and Answers

What is the required tube angle for a lateral hand x-ray?

30 degrees

Straight tube (perpendicular to anatomy) (correct)

90 degrees

45 degrees

Which central ray location should be targeted for a PA oblique hand x-ray?

Wrist joint

5th MCP joint

1st MCP joint

3rd MCP joint (correct)

What is the recommended kVp setting for a lateral hand x-ray?

65 kVp

55 kVp (correct)

60 kVp

50 kVp

What is the minimum distance to be maintained from the x-ray tube for hand imaging?

100-110 cm Signup and view all the answers

In the PA oblique hand positioning, what aspect of the hand is elevated?

Radial aspect Signup and view all the answers

Which of the following accurately describes the density that should be demonstrated in a lateral hand x-ray?

Cortical outline and bony trabecular pattern Signup and view all the answers

Which of the following is NOT a requirement for the collimation of hand x-rays?

Limit to the midpoint of the hand Signup and view all the answers

What should be done to the fingers during the lateral hand positioning?

Fan the fingers out to visualize each digit Signup and view all the answers

What is the correct central ray positioning for a PA Chest radiograph?

Mid-sagittal plane at level of T7 Signup and view all the answers

What is the recommended kVp for an adult PA chest radiograph?

90-110 kVp Signup and view all the answers

Which positioning detail is critical for ensuring no rotation in a PA Chest radiograph?

Clavicles should be equidistant from the sternum Signup and view all the answers

What should be included in the collimation area for a PA Chest radiograph?

Lung apices to costophrenic angles Signup and view all the answers

What is the recommended distance from the x-ray tube to the IR for a PA Chest radiograph?

180 cm Signup and view all the answers

Which of the following serves as a marker of proper density in a PA Chest radiograph?

Vertebral bodies of thoracic spine just visible through cardiac shadow Signup and view all the answers

What breathing instruction should be given to the patient during a PA Chest radiograph?

Take a deep breath and hold during exposure Signup and view all the answers

What is the importance of using high kVp in a PA Chest radiograph?

It enhances grayscale in the radiograph Signup and view all the answers

What is the recommended distance for conducting a finger x-ray?

100-110cm Signup and view all the answers

What kVp setting should be used for a finger x-ray?

50kVp Signup and view all the answers

Which aspect is NOT included in the PA Oblique Finger criteria?

Joint spaces must appear closed Signup and view all the answers

What should be present in the image for proper identification during the x-ray process?

Side marker Signup and view all the answers

What type of tube angle is required for the lateral finger positioning?

Straight tube perpendicular to anatomy Signup and view all the answers

What is the recommended mAs setting for a standard finger x-ray?

2mAs Signup and view all the answers

During the x-ray procedure, what is a primary consideration for the positioning of the patient's fingers?

Fingers must be parallel to the image detector Signup and view all the answers

For the PA Oblique Finger position, what is a critical factor regarding artifacts?

Artifacts in the field of view should be removed Signup and view all the answers

What is the correct position of the thumb for a lateral thumb X-ray?

Palm facing down and fingers slightly arched Signup and view all the answers

What is the central ray location for a lateral thumb X-ray?

1st MCP Joint Signup and view all the answers

What is the recommended distance for performing a lateral thumb X-ray?

100-110 cm Signup and view all the answers

Which of the following is NOT part of the collimation requirements for a lateral thumb X-ray?

All of the thumb but excluding the trapezium Signup and view all the answers

What kVp setting should be used for a lateral thumb X-ray?

50 kVp Signup and view all the answers

What should be ensured about the finger position relative to the detector?

Finger should be parallel to the image detector Signup and view all the answers

Which of the following is important for patient preparation before a lateral thumb X-ray?

Remove any jewelry in the field of view Signup and view all the answers

What is an indicator of proper density on a lateral thumb X-ray?

Cortical outline and bony trabecular pattern clearly visible Signup and view all the answers

Study Notes

Lab Rules

TLD badges are mandatory while in the labs, failure to do so will be penalized
Only authorized personnel are allowed in the lab
Protective clothing such as enclosed footwear and UON placement uniform must be worn
Eating, drinking, or smoking is strictly prohibited in the lab

Radiation Rules

Do not expose radiation without the lab tutor's permission
Imaging fellow students is forbidden
Always close the door before exposing
Ensure the lab is empty before exposing
Follow the lab supervisor's guidance

PA Chest

The image receptor size is 35x43cm
kVp for adults is 90-110 kVp
mAs is approximately 1.2 mAs
The central ray should be directed at the mid-sagittal plane, at the level of T7
The anatomy should include the lung apices to the costophrenic angles, laterally to the skin border
Breathing should be suspended at inspiration
Pt prep - remove artifacts such as clothing, jewelry

PA Chest Criteria

The image should include the lung apices to the costophrenic angles
No rotation, both clavicles should be equidistant from the sternum
Visualization of the lungs, trachea, heart, great vessels, diaphragm, costophrenic angles, and bony thorax
The vertebral bodies of the thoracic spine should be just visible through the cardiac shadow
Markers should be evident
The image should have appropriate identification or deliberately anonymised

PA Oblique Hand

The central ray should be directed at the 3rd MCP joint
The distance should be 100-110cm
kVp is 50kVp
mAs is 2mAs

PA Oblique Hand Criteria

The image should include all the anatomy and skin edges
The midshafts of the third, fourth, and fifth metacarpals should not overlap
The tips of the digits to the distal radius and ulna should be visualized
The cortical outline and bony trabecular pattern should be clearly demonstrated
Markers should be evident
The image should have appropriate identification or deliberately anonymised

Lateral Hand

The central ray should be directed at the level of the MCP joint
The distance should be 100-110cm
kVp is 55kVp
mAs is 2.5mAs

Lateral Hand Criteria

The image should include all the anatomy and skin edges
The tips of the digits to the distal radius and ulna should be visualized
The cortical outline and bony trabecular pattern should be clearly demonstrated

Lateral Finger (Digits 2-5)

The central ray should be directed at the level of the joint in focus (PIPJ or DIPJ)
The distance should be 100-110cm
kVp is 50kVp
mAs is 2mAs

Lateral Finger Criteria

The image should include all the anatomy and skin edges
The tips of the digits to the distal metacarpal should be visualized
The cortical outline and bony trabecular pattern should be clearly demonstrated

PA Oblique Finger Criteria

The image should include all the anatomy and skin edges
The tips of the digits to the distal metacarpal should be visualized
The cortical outline and bony trabecular pattern should be clearly demonstrated
Markers should be evident
The image should have appropriate identification or deliberately anonymised

AP Thumb

The central ray should be directed at the 1st MCP joint
The distance should be 100-110cm
kVp is 50kVp
mAs is 2mAs

Lateral Thumb Criteria

The image should include all the anatomy and skin edges
The tips of the thumb to the trapezium should be visualized
The cortical outline and bony trabecular pattern should be clearly demonstrated
Markers should be evident
The image should have appropriate identification or deliberately anonymised

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Description

This quiz covers essential lab rules for radiology, including safety guidelines and procedures for conducting a PA chest radiograph. Understanding the specifics of protective measures and technical criteria for the imaging of chest anatomy is crucial for all lab personnel. Ensure you are familiar with both the lab rules and the proper techniques outlined in this material.