Ultrasound is defined as sound a frequency above the upper length of normal hearing (ULKHZ) Ultrasound image are formed from the reflected sound waves(2.5-30 MHz ). Sound waves are generated
Day: June 16, 2017
Why does USG is gaining popularity in modern medicine? What are the advantage of USG?Why does USG is gaining popularity in modern medicine? What are the advantage of USG?
Doppler USG allows the imaging of blood flow in vessels an important adjustment to grey scale imaging and has allowed greater diagnostic confidence in image inter preparation. It is gaining
Mention at least six different morphological features of malignant infiltrated cervical lymphnode detected by modern USG?Mention at least six different morphological features of malignant infiltrated cervical lymphnode detected by modern USG?
The following are the different morphological features of malignant infiltrated cervical lymph node detected by modern USG: Round shape short axis diameter of 8mm or more. Heterogeneous echo-texture Cystic or
What is pixels and voxels?What is pixels and voxels?
Two dimensional slice section are composed of pixels which are the smallest picture elements. The more the pixels in a certain distance the better the resolution. Currently the highest resolution
What are the advantages and clinical application of image guided surgery in ENT?What are the advantages and clinical application of image guided surgery in ENT?
Image guided surgery is the general term used for any surgical procedure where the surgeon employs tracked surgical instruments in conjunction with preoperative or intraoperative images in order to indirectly
Define PET scan? When do you say a positive and false negative result in PET CT?Define PET scan? When do you say a positive and false negative result in PET CT?
Positron emission tomography (PET) is a nuclear medicine fundamental imaging technique that is used to observed the pathology and identify based on the altered metabolism. The scan is said to
What are the application/ current indication of PET scan in otorhinolaryngology?What are the application/ current indication of PET scan in otorhinolaryngology?
SCC patients with Equivocal nodal disease following conventional assessment, especially if the nodes in question are not accessible USG or USG FNAC has not provided conclusive result. Suspicion of recurrent/ residual
What are the advantage of PET scan?What are the advantage of PET scan?
It helps to measure difference aspects of tissue metabolism such as Distribution of blood flow Oxygen utilization Protein synthase It helps to improve the staging of neck. FDG-PET can detect
What is fundamental mechanism (principle of PET) of FDG-PET scan?What is fundamental mechanism (principle of PET) of FDG-PET scan?
Position emission tomography (PET) identifies pathology based on altered tissue metabolism The fundamental imaging relies on radioactive molecule (radio tracer) that decays with positron emission . Method The radiotracer (FDG
What do you know about f-MRI? Discuss how it is beneficial in ENT practice?What do you know about f-MRI? Discuss how it is beneficial in ENT practice?
Functional magnetic resonance imaging techniques. This technique relies on the fact the cerebral blood flow and neuronal activation are coupled. When an area of the brain is active, blood flow