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Soft tissue neckAP & Lateral
WEEK 8 (9 for 2014)RTEC 124 -
Reasons for exam Swelling of soft tissue structures Epiglotitis, Tonsilits, etc
CROUP in infants
ST Neck Similar to AP & Lat CSP Some change in techinque and central ray
To visualize nasopharygeal and laryngeal stuctures
Done in Inspiration
AP ST NECKAP C/R is ┴ at laryngeal
prominence (adams apple)
Align chin with back of head
TECHNIQUE CHANGES LOWER KVP AND/OR MAS SEE SOFT TISSUE NOT SPINE C.SP = 70 KVP, 20 MAS, 72 “ ST Neck = 65 kvp 15 mas 72”
Lateral ST neckCh. 15 – Merrills guidelines: 1” below EAM for nasopharynx At mandible angle for oropharynx At adam’s apple for larynx
AT THE CLINICAL: (Should have top of the cassette –
above the ear to include nasopharynx)
Anatomical Features:
1 Nasopharynx 2Oral cavity 3Oropharynx 4Soft palate
5Laryngopharynx 6Body of hyoid bone 7Greater horn of hyoid
bone 8Epiglottis 9Aryepiglottic folds 10Laryngeal ventricle 11Arytenoid cartilage 12Cricoid cartilage 13Esophagus 14Trachea
Anatomical Features: 1Vestibule 2Vestibular fold 3Laryngeal ventricle 4Vocal fold 5Rima glottidis 6Subglottic space 7Trachea
Lateral projection showing calcified hematoma of thyroid gland (arrows).