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C spine
Radiographic positioning of the Cspine
| Question | Answer |
|---|---|
| What is the SID for the AP axial projection of the C spine? | 40 inches |
| What is the SID for the AP oblique projection of the C spine? | 72 inches |
| What is the SID for the lateral projection of the C spine? | 72inches |
| Another name for C1? | Atlas |
| Another name for C2? | Axis |
| What is the name of the bony prominence on C2 that articulates with the anterior arch of C1? | Dens |
| What artery runs though the transverse foramen of the C spine? | Vertebral artery |
| What is the CR angle for the AP axial of the Cspine? | 15-20 cephalic |
| What is the centering point for the AP oblique projection? | C4 |
| What is the CR angle for the PA oblique projection of the Cspine? | 15-20 Caudal |
| What projection would demonstrate the apophyseal joints of the Cspine? | Lateral |
| What position would demonstrate the right intervertebral foramen of the Cspine? | LPO or RAO |
| What makes up the intervertebral foramen of the Cspine? | the inferior and superior articular notches |
| What makes up the spinous processes of the Cspine? | The fusion of the Lamina |
| What is the centering point for the AP axial projection of the Cspine? | C4 |
| Describe how to position the head for the Odontoid position? | Align the inferior surface of the upper incisors with the base of the Occipital bone so that they are perpendicular to the IR, then drop the jaw of the patient while keeping head still. |
| If you want to visualize the Intervertebral Formina of the C spine, what degree of rotation is needed? | 45 degree oblique (upside, posterior oblique) |
| If you want to visualize the Zygapophyseal joints of the C spine, what degree of rotation is needed? | A lateral projection. 90 Degrees. |
| Boom | SHoCk A LoCkA |
| What is the SID for the AP axial projection | 40in |
| What is the SID for the AP oblique projection | 72in. |
| What is the other name for C1_______ C2______? | Atlas, C2 Axis |
| What is the name of the bony prominence on C2 that articulates with the anterior arch of C1 | dens or odontoid process |
| What artery runs through the transverse foramen | vertebral artery |
| What is the CR angle for the AP axial of the C-spine | C4 |
| What is the centering point for the PA oblique projection of the C-spine | 15 caudad |
| What is the SID for a lateral C-spine | 72in. |
| What projection would demonstrate the apopyseal joints of the cervical spine | lateral C spine |
| What position would demonstrate the right intervertebral foramen of the cervical spine | RAO and LPO |
| What makes up the intervertebral foramen of the cervical spine_____ and _____ ? | inferior and superior vertebral notch |
| What makes up the spinous process of the cervical spine | fusing of the lamina |
| What is the centering point for the AP axial projection | C4 |
| Describe how to position a patient for the odontoid position | adjust head so mouth is open, form a line from lower margin of upper incisors to base of skull (mastoid tips) is perpendicular to the IR |
| What anatomical landmark is at the level of C3 | Gonion or angle of the jaw |
| What anatomical landmark is at the level of C5 | thyroid cartilage or Adams apple |
| What is the kV for cervical exams | 70-80kV |
| All cervical images are taken on an 8X10LW except | swimmers projection is taken 10X12LW |
| What are other names for the swimmers projection of the C spine | cervicothoracic or Twining method |
| For a lateral and swimmers projection of the C spine breathing should be on inspiration or expiration to drop the shoulders | suspended full expiration |
| For the odontoid, AP axial and obliques of the C spine breathing should be on inspiration or expiration | suspend respiration ( stop breathing) |
| Why don’t you move a trauma C spine patient in a neck collar, some pathology | fractures, sublaxation, or cervical instability |
| What does the Fuch (AP) or Judd (PA) methods for the C spine visualize | C1 to C2 (Dens) |
| How much is the patient rotated for a Cervical oblique projection to see the intervertebral formina | 45deg oblique |
| Is the tube angled 15deg cephalic or caudad for LPO and RPO projections? Will upside or downside be visualized? | CR 15 deg cephalic PO’s visualize upsides |
| What projection of the C spine visualizes the zygapophyseal joints | 90deg lateral projection |
| Does C1 the atlas have a vertebral body | no, an anterior arch |
| This Cervical vertebrae contains the Dens | C2 the axis |
| What vertebrae have short spinous processes with bifid tips | C2 to C6 |
| How many foramina do each cervical vertebrae have | 3 each |
| What is C7 also known as | vertebra prominens because of its long spinous process |
| What are Cervical examinations usually done erect vs. recumbrent like a T spine | demonstrate alignment and ligament stability , allows natural curvature of spine to be demonstrated |
| What is a Jefferson fracture | anterior and posterior arches of C1 are fractured as the skull slams into the ring |
| What are the basic projections for a cervical spine exam | AP open mouth, AP axial, obliques, lateral, swimmers |
| What vertebrae is 1in below the external acoustic meatus or EAM | C1 which is the level of the mastoid tip |
| An open atlantoaxial joint can be visualized with what projection of the C spine | AP open mouth projection |
| What can you do if C7 was not demonstrated on lateral C spine image | take image on expiration, have patient hold weights, take a swimmers |
| What cervical projection aligns the midcoronal plane at a 45 deg angle with their and the CR has a 15deg caudad angle | anterior oblique C spine projection |
| What does a LPO and RAO of the C spine demonstrate? | the Right cervical intervertebral foramina |
| If the AP axial oblique cervical image demonstrates closed joint spaces and distorted bodies what is likely to be the fault | CR angle inaccurate |
| What is lordosis? | abnormal lumbar curvature with increased concavity aka swayback |
| what is kyphosis? | abnormal thoracic curvature with increased convexity aka humpback |
| what is scoliosis? | abnormal lateral curvature |
| what is unique about the C-spine spinous processes? | they are bifid |
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