MRI Left Hand: Purpose, Procedure & Benefits

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Learn everything about an MRI left hand scan. Our guide covers the purpose, procedure, preparation, and how it helps diagnose hand injuries and conditions.

Procedure of NT NB USG Test

Overview

The USG NT NB scan is one of most important first trimester prenatal screening examinations. During the scan the sonography carefully measures the thickness of nuchal translucency and checks whether the fetal nasal bone is present and appropriately developed. In addition to NT and nasal bone assessment the examination confirms fetal viability, estimates gestational age, measures the crown rump length CRL evaluates the fetal heartbeat and assesses the uterus placenta and amniotic fluid. The NT NB scan is often combined with maternal blood tests as part of first trimester combined screening which improves the accuracy of estimating the risk of chromosomal disorders.

What is the Procedure of USG NT NB?

The Procedure of USG NT NB as follows:

Confirmation of gestational age
The patient lies comfortably on the examination table
Ultrasound gel is applied to the abdomen
A handheld ultrasound transducer is moved over the abdomen
A transvaginal ultrasound may be performed if required
Measurement of the fetal crown-rump length (CRL)
Measurement of the nuchal translucency (NT)
Assessment of the fetal nasal bone (NB)
Evaluation of the fetal heartbeat
Examination of early fetal anatomy
Assessment of the uterus, placenta, and amniotic fluid
Recording of ultrasound images and measurements
Interpretation of findings by the radiologist or fetal medicine specialist
Preparation of the final ultrasound report

What are the Limitations of USG NT NB?

The Limitations of USG NT NB are as follows:

The scan is a screening test and cannot confirm or exclude chromosomal abnormalities.
Not all birth defects can be detected during the first trimester.
Image quality may be affected by fetal position, maternal body habitus, or gestational age.
Additional blood tests are often required to improve screening accuracy.
Abnormal results do not always indicate that the baby has a genetic condition.
Normal results do not completely eliminate the possibility of fetal abnormalities.
Further diagnostic tests such as CVS, amniocentesis, or NIPT may still be recommended.
The examination depends on operator expertise and image quality.
Some congenital abnormalities develop later in pregnancy.
Results should always be interpreted together with clinical findings and prenatal screening tests.

Why choose Ganesh Diagnostic for USG NT NB test?

This diagnostic centre is also recognized by NABL and NABH for quality standards and operating procedures. Ganesh Diagnostic provides quality tests for USG NT NB with expert doctors and advanced machines.