SUMMARY OF LARYNX IMAGING SCAN PROTOCOL MRI Scout

SUMMARY OF LARYNX IMAGING SCAN PROTOCOL MRI Scout Axials Sagital Slice Thickness FOV MANDATORY CT Axial "Both Hips" T 1 & T 2 & PD Scout Position Scan Lateral Supine – Hyperextended neck Tounge base : Trachea Windows = Soft Tissue "main" = Bone Cartilage Invasion 2 – 3 mm T 1 o T 2 for disased 5 mm 20 cm FAT SUPREES Pre & post Contrast LESIONS OF THE LARYNX 1. LARYNGEOCELE ىﺮﻻ – ﻧﻮﻳﻠﺒﺎﻥﺑﻴﺒﻂ. ﺩ ﻣﺴﺎ ﻳﻠﻊ Voice abuse Dilated laryngeal sacule Contains : air – fluid or air/fluid Three Types : Internal - External - Maixed 15 % + Cancer 40% Cyst Inside Larynx 16% Outpouch through thyro-hyoid membrane 44% Cyst on both sides of thyroid membrane By A. M. Abodahab – Ass. Lecturer of Radiology - Sohag University

SUMMARY OF LARYNX IMAGING Air fluid level in External & Mixed 2. CANCER LARYNX Mostly Squamous cell carcinoma Incidence Supra-glotic 70 : 60 % Glottic 25 : 35% Sub Glottic 5 % Transglottic Involve 3 levels Lymphatic spread 30 % 1% 30 % Role of Imaging : o CT & MRI Assess site & extension of Mass o In supraglottic lesions : Extension to pre epiglottic space & Para Glottic Space & Ant. Commisure By A. M. Abodahab – Ass. Lecturer of Radiology - Sohag University

SUMMARY OF LARYNX IMAGING Lt Laryngeal mass invading Lt ary-epiglottic fold By A. M. Abodahab – Ass. Lecturer of Radiology - Sohag University

SUMMARY OF LARYNX IMAGING 3. OTHERS HAMANGIOMA POLYP Voice Abuse By A. M. Abodahab – Ass. Lecturer of Radiology - Sohag University

SUMMARY OF LARYNX IMAGING By A. M. Abodahab – Ass. Lecturer of Radiology - Sohag University

SUMMARY OF LARYNX IMAGING By A. M. Abodahab – Ass. Lecturer of Radiology - Sohag University