Mri neck

imaging of soft tissue neck using mri
preparation,positioning and protocol of mri neck

1. MRI SOFT TISSUE NECK MAAJID MOHI UD DIN MALIK LECTURER COPMS ADESH UNIVERSITY BATHINDA,PUNJAB

2. Magnetic resonance imaging (MRI) is a medical imaging technique that uses magnets and radio waves to create pictures of the organs and tissues within the body. These images can be used to evaluate your body’s structure and function. It is especially useful for the musculoskeletal system. INTRODUCTION

3. Abnormalities noted on other imaging or endoscopic studies Staging of known malignancy of head and neck Congenital anomalies Treatment planning for radiation therapy Evaluation for response to treatment INDICATIONS

4. Pre-operative evaluation of tumours Presence of a foreign body Upper airway obstruction Obstructive thyroid disease Head/neck abscess Retropharyngeal abscess Tracheal stenosis CONT…

5. Vocal cord paralysis Nasopharynx tumours Parotid tumor Orbital tumours Trauma CONT…

6. Any electrically, magnetically or mechanically activated implant (e.g. cardiac pacemaker, insulin pump biostimulator, neurostimulator, cochlear implant, and hearing aids) Intracranial aneurysm clips (unless made of titanium) Contraindications

7. Pregnancy (risk vs benefit ratio to be assessed) Ferromagnetic surgical clips or staples Metallic foreign body in the eye Metal shrapnel or bullet CONT…

8. A satisfactory written consent form must be taken from the patient before entering the scanner room Ask the patient to remove all metal object including keys, coins, wallet, any cards with magnetic strips, jewellery, hearing aid and hairpins Ask the patient to undress and change into a hospital gown Patient preparation

9. Contrast injection risk and benefits must be explained to the patient before the scan Gadolinium should only be given to the patient if GFR is >30 If possible provide a chaperone for claustrophobic patients (e.g. relative or staff ) Offer earplugs or headphones, possibly with music for extra comfort CONT…

10. Explain the procedure to the patient Instruct the patient to keep still Note the weight of the patient CONT…

11. Head first supine Position the head in the head and neck coil and immobilise with cushions Give cushions under the legs for extra comfort Centre the laser beam localiser over the mid neck (1 inch below the chin in chin down position) Positioning

12. POSITION

13. Localiser A three plane localiser must be taken in the beginning to localise and plan the sequence Localisers are normally less than 25sec. T1 weighted low resolution scans. Suggested protocols, parameters and planning

14. Localiser

15. NASOPHARYNX

16. OROPHARYNX

17. LARYNX

18. SALIVARY GLAND

19. RECURRENT TUMOUR IN NECK