Radiographic Procedures: Essential Projections of the Leg, Knee, Intercondylar Fossa, Patella, and Femur

A set of vocabulary flashcards covering key concepts and terms from the lecture notes on radiographic procedures, focusing on leg, knee, patella, and femur projections.

General Procedural Guidelines

Instructions detailing the patient preparation, positioning, imaging plate size, radiation safety, and procedural specifics for leg, knee, patella, and femur radiographs.

Patient Preparation

Steps taken to ensure the patient is ready for imaging, including removing clothing and artifacts, and providing a gown.

SID (Source-to-Image Distance)

The distance from the radiation source to the imaging receptor, standardized at 40 inches for most projections.

ID Markers

Markers indicating the right or left side, included on radiographic images to identify patient orientation.

Radiation Protection

Measures taken to minimize exposure to radiation, particularly for vulnerable populations like children and those of reproductive age.

AP Leg Projection

Anteroposterior projection for leg imaging, requiring the pelvis to be without rotation and the foot to be positioned vertically.

Lateral Knee Projection

Mediolateral projection where the affected knee is flexed and turned toward the IR, with specific knee angling requirements.

AP Oblique Knee (Lateral Rotation)

Projection with lateral rotation of the limb to visualize the knee joint, involving alignment and CR positioning adjustments.

PA Axial (Holmblad) Projection

Intercondylar fossa view with the knee flexed 70 degrees from full extension, requiring specific patient positioning.

Tangential Patella (Settegast) Projection

Projection where the knee is flexed until the patella is perpendicular to the IR, requiring an angle adjustment for optimal imaging.

General Procedural Guidelines

Instructions detailing the patient preparation, positioning, imaging plate size, radiation safety, and procedural specifics for leg, knee, patella, and femur radiographs.

Patient Preparation

Steps taken to ensure the patient is ready for imaging, including removing clothing and artifacts, and providing a gown.

SID (Source-to-Image Distance)

The distance from the radiation source to the imaging receptor, standardized at 40 inches for most projections.

ID Markers

Markers indicating the right or left side, included on radiographic images to identify patient orientation.

Radiation Protection

Measures taken to minimize exposure to radiation, particularly for vulnerable populations like children and those of reproductive age.

AP Leg Projection

Anteroposterior projection for leg imaging, requiring the pelvis to be without rotation and the foot to be positioned vertically.

Lateral Knee Projection

Mediolateral projection where the affected knee is flexed and turned toward the IR, with specific knee angling requirements.

AP Oblique Knee (Lateral Rotation)

Projection with lateral rotation of the limb to visualize the knee joint, involving alignment and CR positioning adjustments.

PA Axial (Holmblad) Projection

Intercondylar fossa view with the knee flexed 70 degrees from full extension, requiring specific patient positioning.

Tangential Patella (Settegast) Projection

Projection where the knee is flexed until the patella is perpendicular to the IR, requiring an angle adjustment for optimal imaging.

Vulnerable Populations for Radiation Protection

Children and individuals of reproductive age, requiring minimized exposure to radiation during radiographic procedures.

Pelvis Positioning for AP Leg Projection

The pelvis must be without rotation for accurate anteroposterior (AP) imaging of the leg.

Foot Positioning for AP Leg Projection

The foot must be positioned vertically during an AP Leg Projection.

Knee Flexion for PA Axial (Holmblad) Projection

The knee is flexed 70^\circ from full extension to visualize the intercondylar fossa.

What specific items must be removed from a patient during preparation for radiography?

Clothing and artifacts.

What is the standardized Source-to-Image Distance (SID) for most radiographic projections?

40 inches.

How is the affected knee positioned in a Lateral Knee Projection?

It is flexed and turned toward the IR.

What is the primary anatomical structure visualized with the PA Axial (Holmblad) Projection?

The intercondylar fossa.

What is the specific patient positioning goal for the patella in a Tangential Patella (Settegast) Projection?

The knee is flexed until the patella is perpendicular to the IR.

What types of radiographs do the General Procedural Guidelines cover?

Leg, knee, patella, and femur radiographs.

What is one key item provided to the patient during preparation for radiography?

A gown.

What is the purpose of ID Markers on radiographic images?

To indicate the right or left side and identify patient orientation.

What is the overarching goal of Radiation Protection measures in radiography?

To minimize exposure to radiation.

What type of projection is the Lateral Knee Projection?

Mediolateral projection.

What type of rotation is involved in an AP Oblique Knee projection specifically for visualizing the knee joint?

Lateral