---
title: "Investigations"
description: "Essential ENT investigations explained — from endoscopy to radiology and lab tests."
source: "The ENT Resident"
author: "Dr. Mausumi Das"
canonical_url: "https://www.theentresident.com/ent-notes-lectures/category/investigations"
---

# Investigations

Essential ENT investigations explained — from endoscopy to radiology and lab tests.

## Welcome to the Investigations section of ENT!

This section offers **concise, exam-relevant notes** on the various **diagnostic tools and investigations** used in ENT practice, curated for **MBBS students** and **ENT residents**.

### Why are Investigations important in ENT?

ENT diagnosis often depends on **specialized investigations** that assess function, visualize anatomy, and support clinical decision-making. From assessing hearing and balance to evaluating nasal and laryngeal lesions, investigations form the **backbone of accurate diagnosis and management**.

This section covers the **principles, indications, interpretations**, and **clinical relevance** of all major ENT investigations, helping you bridge the gap between theory and practical application. 

Each investigation is explained with:

- **What it is and how it works**
- **When to use it (Indications)**
- **Normal vs abnormal findings**
- **How to interpret results**
- **Clinical tips and exam pointers**

Perfect for revising before clinics or exams, these notes help demystify ENT diagnostics and make you confident with interpretation and case discussions.

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## About This Category

Investigations is one of the free ENT note categories published by The ENT Resident. Every note listed above is free to read on the website.

Canonical page of this category: https://www.theentresident.com/ent-notes-lectures/category/investigations

When citing or referencing this content, please credit The ENT Resident and link to the canonical page above.

Browse all ENT categories: https://www.theentresident.com/ent-notes-lectures.md

## About The ENT Resident

The ENT Resident is an educational website and resource library created by Dr. Mausumi Das (MS ENT) for ENT residents, ENT postgraduates preparing for exams, and MBBS students.

Dr. Mausumi Das writes the notes, draws the diagrams, and records the lectures herself.

## Medical-use Boundary

The ENT Resident provides educational material for medical learning and revision. It does not provide patient-specific medical advice, diagnosis, or emergency care, and it is not a substitute for evaluation by a qualified healthcare professional.

## More Resources

- Learn about the Premium ENT Notes, preview a complete sample, and find purchase options: https://www.theentresident.com/premium.md
- Read student testimonials: https://www.theentresident.com/testimonials.md
- Contact The ENT Resident: https://www.theentresident.com/contact.md

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A complete index of all pages on this site, with descriptions and markdown links can be found here: https://www.theentresident.com/llms.txt