From the primary site the tumour may spread in one or more of the following directions: Anteriorly to the nasal cavity and paranasal sinuses, pterygopalatine fossa and apex of the
Day: June 21, 2017
What is optical coherence tomography? What are its advantages?What is optical coherence tomography? What are its advantages?
Optical coherence tomography (OCT) is relatively new optical imaging modality that allows high resolution, cross sectional imaging of tissue microstructure. OCT can image c an axial resolution of 1-15 mm
What is contact endoscopy? How is it done? Describe the normal appearance of larynx by contact endoscopy?What is contact endoscopy? How is it done? Describe the normal appearance of larynx by contact endoscopy?
It represent the new phase in the development of endoscopy. Contact endoscopy is a new method for studying disease of the head and neck which clearly shows the cell morphology
What is photodynamic therapy? What is its mechanism of action? List ENT disease where this modality of treatment is applicable?What is photodynamic therapy? What is its mechanism of action? List ENT disease where this modality of treatment is applicable?
Photodynamic therapy (PDT) is a subset of photo-chemotherapy where in addition to an administration of drug and application of light, oxygen is required to complete the process. Th administrated of
What are the advantages of CO2 laser beam in comparison to other laser beam?What are the advantages of CO2 laser beam in comparison to other laser beam?
Immediate tissue destruction by vaporization unlike cryotherapy which needs many days to allows the tissue destroy by freezing and separately CO2 doesn’t cause pain, oedema and slough or minimal compared
what safety precautions should be taken to avoid LASER hazard?what safety precautions should be taken to avoid LASER hazard?
The principles of the safety are as follows: A laser may hit or damage object outside the target area and cause a fire, tissue damage or eye visual damage. The