Position: Oblique Ribs Posterior Posterior oblique rib projections rotate the patient 45 degrees to demonstrate axillary ribs. They evaluate fractures and lesions. Proper rotation prevents superimposition. These projections complement AP rib views. They are frequently tested on ARRT exams.
Position: Oblique Ribs Anterior Anterior oblique rib projections rotate the patient to demonstrate the opposite side ribs. They improve visualization of rib fractures. Proper rotation is essential. These projections complement posterior oblique views. They are recognized ARRT competencies.
Position: AP Sacrum The AP sacrum projection demonstrates the sacrum free of foreshortening. A cephalic angle opens the sacral foramina. This projection evaluates fractures and congenital anomalies. Proper centering ensures diagnostic quality. It is a standard ARRT requirement.
Position: AP Coccyx The AP coccyx projection demonstrates the coccyx with minimal superimposition. A caudal angle reduces overlap with the sacrum. This projection evaluates fractures and dislocations. Proper centering ensures full visualization. It is frequently tested on ARRT exams.
Position: Lateral Sacrum The lateral sacrum projection demonstrates the sacrum in profile. It evaluates fractures and alignment. Proper positioning prevents rotation. This projection complements AP sacrum views. It is a core ARRT competency.
Position: Lateral Coccyx The lateral coccyx projection demonstrates the coccyx in profile. It evaluates fractures and soft tissue swelling. Proper positioning prevents superimposition. This projection complements AP coccyx views. It is frequently tested on ARRT exams.
Position: AP SI Joints The AP SI joint projection demonstrates the sacroiliac joints symmetrically. A cephalic angle opens the joint spaces. This projection evaluates degenerative changes and inflammation. Proper centering prevents pelvic rotation. It is a standard ARRT requirement.
Position: Oblique SI Joints Oblique SI joint projections rotate the patient 25 to 30 degrees to demonstrate the elevated SI joint. They evaluate joint space narrowing and pathology. Proper rotation ensures diagnostic clarity. These projections complement AP SI views. They are frequently tested on ARRT exams.
Position: AP Thoracic Spine The AP thoracic spine projection demonstrates vertebral bodies and intervertebral spaces. Proper exposure penetrates the thoracic region. This projection evaluates fractures, scoliosis, and degenerative changes. It complements lateral thoracic views. It is a core ARRT competency.
Position: Lateral Thoracic Spine The lateral thoracic spine projection demonstrates vertebral alignment and disk spaces. A breathing technique may blur ribs for improved visualization. This projection evaluates trauma and pathology. Proper positioning prevents rotation. It is frequently tested on ARRT exams.