# Centring Point Questions

rename
mwhyett's
version from
2016-05-23 22:52

## Section

Question | Answer |
---|---|

What is the centring point for an AP supine abdomen? | 1cm below the iliac crests. |

What is the centring point for an AP ankle mortice? | Midway between the malleoli. |

What is the centring point for a lateral ankle? | Medial malleolus. |

What is the centring point for an axial calcaneum? | Base of 5 metatarsal on the plantar aspect of heel. |

What is the centring point for an AP (C3-C7) cervical spine? | 5cm above the jugular notch. |

What is the centring point for a lateral cervical spine? | 2.5cm below and behind the angle of the mandible. |

What is the centring point for an AP (C1-C2) open mouth cervical spine? | To the centre of the open mouth. |

What is the centring point for a DP hand? | Head of the 3rd metacarpal. |

What is the centring point for a DP oblique hand? | Head of the 3rd metacarpal. |

What is the centring point for a lateral hand? | Head of the 2nd metacarpal. |

What is the centring point for a PA wrist? | Midway between the radial and ulnar styloid processes. |

What is the centring point for a lateral wrist? | Radial styloid process. |

What are the five scaphoid views? | 1. PA with ulnar deviation. 2. Anterior oblique. 3. Lateral. 4. Posterior oblique. 5. Elongated scaphoid. |

What is the centring point for a PA scaphoid with ulnar deviation? | Midway between the radial and ulnar styloid processes. |

What is the centring point for an anterior oblique scaphoid with ulnar deviation? | Midway between the radial and ulnar styloid processes. |

What is the centring point and angulation for an elongated scaphoid? | The scaphoid at 30 degrees. |

What is the centring point for an AP elbow? | 2.5cm distal to the midway point between the medial and lateral epicondyles of the humerus. |

What is the centring point for a lateral elbow? | Lateral epicondyle of the humerus. |

What is the centring point for an AP forearm? | Midway between the elbow and wrist. |

What is the centring point for a lateral forearm? | Midway between the elbow and the wrist. |

What is the centring point for an AP humerus? | Midway between the shoulder and elbow. |

What is the centring point for a lateral humerus? | Midway between the shoulder and the elbow. |

What is the centring point for a finger? | Proximal interphalangeal of the affected finger. |

What is the centring point for a DP foot? | Cuboid-navicular joint, midway between navicular tuberosity and tuberosity of the 5th metatarsal. |

What is the centring point for a DP oblique foot? | Cuboid navicular joint. |

What is the centring point for a DP toe? | Metatarsophalangeal joint of affected toe. |

What is the centring point for an oblique toe? | Metatarsophalangeal joint of affected toe. |

What is the centring point for a lateral hallux view? | First metatarsophalangeal joint. |

What is the centring point for an AP tibia and fibula? | Midway between the ankle and knee. |

What is the centring point for a lateral tibia and fibula? | Midway between the ankle and knee. |

What is the centring point for a an AP knee? | 2.5cm below apex of patella. |

What is the centring point for an axial elbow? | 2.5cm distal to the olecranon process. |

What is the centring point of a skyline patella? | Apex of patella. |

What is the centring point of a lateral calcaneum? | Immediately distal to the medial malleolus. |

What is the centring point of an OF 20 projection? | The occiput to exit the nasion. |

What is the centring point of an AP pelvis? | 5cm above symphysis pubis. |

What is the centring point for AP both hips? | 2.5cm above symphysis pubis. |

What is the centring point for an AP single hip? | 2.5cm above symphysis pubis. |

What is the centring point for a horizontal beam lateral? | Skin fold of the groin. |

What is the centring point for a lateral cervical spine? | 2.5cm below and behind the angle of the mandible. |

What is the centring point for an AP cervical spine? | 5cm above sternal notch. |

What is the centring point for an AP cervical spine (1-3)? | Lower border of incisors. |

What is the centring point for an AP thoracic spine? | Midway between the sternal notch and the xiphoid process. |

What is the centring point for a lateral thoracic spine? | 5 cm anterior to the spinous process of T6. |

What is the centring point for an AP lumbar spine? | At the level of the lower costal margin. |

What is the centring point for a lateral lumbar spine? | 7.5cm anterior to the spinous process of L3. |

What is the centring point for an AP femur? | Between the two femoral condyles, midway between the knee and hip. |

What is the centring point and angulation for a PA sacrum? | Posterior superior iliac spine (PSIS), with 5-15 degree caudal angulation. |

What is the centring point for a lateral sacrum? | Midway between the PSIS and the coccygeal junction. |

What is the centring point for a PA mandible? | In the midline at the angles of the mandible. |

What is the centring point and angulation for a lateral oblique mandible? | 5cm inferior to the angle of the mandible with 30 degree cranial angulation. |

What is the centring point for a clavicle? | Midway between both ends of the clavicle. |

What is the centring point for an AP shoulder? | Coracoid process of the scapula. |

What is the centring point for an axial shoulder? | Proximal end of the humerus. |

What is the centring point for a 'Y' view lateral shoulder? | Medial border of the scapula. |

What is the centring point for an OM 30 projection? | Through the occiput to exit anterior nasal spine. |

What is the centring point for an OM projection? | Through the occiput to exit the nasion. |

What is the centring point for a lateral skull? | 5cm superior to the external auditory meatus. |

What is the centring point for a lateral sinus projection? | 2.5cm posterior to the outer canthus of the eye. |

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