CRANIUM POSITIONING

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Author:
defyinglabels
ID:
219321
Filename:
CRANIUM POSITIONING
Updated:
2013-05-12 21:35:14
Tags:
SKULL
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Description:
SKULL POSITIONING
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  1. RIGHT OR LEFT LATERAL
    • IR: 10X12 CW
    • PT POS: SEMI-PRONE
    • PART POS: SIDE OF INTEREST CLOSEST TO IR; MSP PARALLEL / IOML & IPL PERP TO IR
    • CR: PERP, 2" SUPERIOR TO EAM
    • ANATOMY: ENTIRE CRANIUM, SUPERIMPOSED ORBITAL ROOFS, SELLA TURCICA IN PROFILE 
  2. PA
    • IR: 10X12 LW
    • PT POS: PRONE; FOREHEAD & NOSE ON IR
    • PART POS: OML & MSP PERP TO IR
    • CR: PERP TO EXIT NASION
    • ANATOMY: FRONTAL BONE - ORBITS FILLED BY PETROUS PYRAMIDS
  3. PA AXIAL - CALDWELL METHOD
    • IR: 10X12 LW 
    • PT POS: PRONE; FOREHEAD & NOSE ON IR  
    • PART POS: OML & MSP PERP TO IR  
    • CR: 15* CAUDAD EXITING NASION
    • ANATOMY: FRONTAL BONE- PETROUS PYRAMIDS IN LOWER 1/3 OF ORBITS 
  4. PA AXIAL - SUPERIOR ORBITAL FISSURES OR ROTUNDUM FORAMINA
    • IR: 10X12 LW
    • PT POS: PRONE
    • PART POS: OML & MSP PERP TO IR
    • CR: 20-25* CAUDAD THROUGH MID ORBITS FOR SUPERIOR ORBITAL FISSURES
    • 25-20* CAUDAD TO NASION FOR ROTUNDUM FORAMINA
    • ANATOMY: SUPERIOR ORBITAL FISSURES OR ROTUNDUM FORAMINA
  5. AP / AP AXIAL
    • IR: 10X12 LW
    • PT POS: SUPINE
    • PART POS: OML & MSP PERP TO IR
    • CR: PERP OF 15* CEPHALAD TO NASION
    • ANATOMY: SIMILAR STRUCTURES AS PA PROJECTION BUT ORBITS ARE MAGNIFIED DUE TO INCREASED OID
  6. AP AXIAL - TOWNE METHOD
    • IR: 10X12 LW
    • PT POS: SUPINE
    • PART POS: OML & MSP PERP TO IR - IOML PERP TO IR IF PT CAN'T FLEX NECK
    • CR: OML: 30* CAUDAD / IOML: 37* CAUDAD
    • 2 1/2" ABOVE GLABELLA, PASSING THROUGH THE EAM
    • ANATOMY: OCCIPITAL - DORSUM SELLAE & POSTERIOR CLINOID PROCESSES VISABLE WITHIN FORAMEN MAGNUM
  7. PA AXIAL - HAAS METHOD
    • IR: 10X12 LW
    • PT POS: PRONE; FOREHEAD & NOSE ON IR
    • PART POS: OML & MSP PERP TO IR
    • CR: 25* CEPHALAD, 1 1/2" BELOW INION & EXITING 1 1/2" ABOVE NASION
    • ANATOMY: OCCIPITAL - DORSUM SELLAE & POSTERIOR CLINOID PROCESSES WITHIN FORAMEN MAGNUM
    • *THIS IS AN ALTERNATIVE METHOD FOR THE AP AXIAL (TOWNE) PROJECTION*
  8. SUBMENTOVERTICAL (SMV) - SCHULLER METHOD
    • IR: 10X12 LW
    • PT POS: SUPINE
    • PART POS: MSP PERP TO IR / IOML PARALLEL TO IR
    • CR: PERP BETWEEN ANGLES OF MANDIBLE & PASSING THROUGH POINT 3/4" ANTERIOR TO LEVEL OF EAM
    • ANATOMY: CRANIAL BASE - MANDIBULAR CONDYLES ANTERIOR TO PETROUS PYRAMIDS

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