| A | B |
|---|
| How many cervical vertebrae are there? | 7 (C1–C7) |
| What is the name of the first cervical vertebra? | Atlas (C1) |
| What is the name of the second cervical vertebra? | Axis (C2) |
| What structure on the Axis (C2) allows for rotation of the head? | Dens (Odontoid process) |
| What is the SID (Source-to-Image Distance) typically used for lateral cervical spine imaging? | 72 inches (183 cm) |
| What projection best shows the intervertebral foramina of the cervical spine? | Oblique cervical spine |
| What angle and direction are used for an anterior oblique cervical spine projection? | 15–20° caudad angle |
| What angle and direction are used for a posterior oblique cervical spine projection? | 15–20° cephalad angle |
| What projection best shows the zygapophyseal joints in the cervical spine? | Lateral view |
| What does the swimmer’s lateral (Twining method) view demonstrate? | Cervicothoracic junction (C5–T3) |
| What is the CR (central ray) location for an AP cervical spine projection? | C4 (typically at the level of the thyroid cartilage) |
| What is the breathing instruction for a lateral cervical spine? | Suspend respiration at the end of full expiration |
| What is the correct patient position for an open mouth (odontoid) view? | Mouth open wide, upper incisors and base of skull perpendicular to the IR |
| Why is the AP axial projection angled 15–20° cephalad? | To open intervertebral disc spaces |
| What anatomy must be clearly visible in a lateral cervical spine? | All 7 cervical vertebrae and C7–T1 junction |
