Chest MRI Basics

We delves into the advantages and disadvantages of MRI versus CT scans in this talk. While MRI excels in providing detailed soft tissue characterization, motion capture, and lacks ionizing radiation, its limitations include poorer spatial resolution, susceptibility to motion artifacts, and difficulty imaging certain tissues like bone and lungs. Unlike CT's reliance on x-ray beams, MRI visualizes hydrogen atoms, allowing various property-based imaging sequences. Grasping MRI's grayscale representations and diverse sequences poses challenges compared to the more intuitive grayscale-based interpretation in CT scans. Protocoling for MRI involves selecting sequences tailored to specific organs, considering imaging volume, resolution, duration, and the need for contrast. Specific sequences serve distinct purposes. Overall, MRI offers multiple ways to view tissues, akin to experiencing the world with multiple senses, but its complexity requires a nuanced understanding for effective usage.

Chapters:
00:00 - Introduction
01:44 - CT: a One Trick Pony
03:24 - MRI: a Multi-Trick Pony
05:35 - Grayscale Appearances of Normal Tissues on CT vs. MRI
06:54 - MR Sequence Nomenclature
09:20 - Different MR Sequences for Different Body Parts
10:24 - Coverage of Acquisition
11:00 - 2D vs 3D Acquisitions
12:51 - Duration of Acquisition
13:30 - Resolution of Acquisition
15:06 - MR Sequences used in Chest
19:07 - Example MR Protocol for Basic Anatomy
19:35 - Example MR Protocol for Lymphoma
20:28 - Example MR Protocol for Anterior Mediastinal Mass
21:08 - Example MR Protocol for Pulmonary Embolus

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