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).