Essential Guide for Practical Orthopaedics Volume - I by Sharma Jayant

Author:Sharma, Jayant [Sharma, Jayant]
Language: eng
Format: epub
ISBN: 9789388022637
Publisher: IP Innovative Publication Pvt. Ltd.
Published: 2020-11-10T00:00:00+00:00

Low intensity T1 mode– for intramedullary lesion.

High intensity T2 mode– extra osseous lesion.

Q. 64 What is the role of electromyography in patients of a Disc prolapse?

It is done in order to differentiate radicular symptoms from neuropathy or UMN lesion or myopathy if present.

Q. 65 On what principle does the MRI work?

It uses a magnetic field, not ionizing radiation to obtain direct multiplanar images, with excellent soft tissue contrast.

Q. 66 What superiority does the MRI have over CT scan?

It is more sensitive than CT for diagnosing herniated lumbar disc It is accurate in detecting disc herniation and degeneration, but, It is comparable to CT in detecting bony changes. Extremely sensitive to marrow abnormalities.

Q. 66 What do you understand by the T1 and T2 images?

T1 = stands for longitudinal relation time it is the time required by the protons excited to a higher energy state by MR magnet to return to their equillibrium

T2 = Transverse relation time - it is the time required to loose transverse magnetization.

Q. 67 What is the role of the T1 and T2 image in study of the Spine disorders?

T1 weighted sequence evaluates:

Spine anatomy.

Medullary bone.

Discovertebral joints.

Neural foramen.

Facet joints.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.