CT Imaging: Basic Technical Concepts

Computed tomography (CT) imaging utilizes various scanning and presentation parameters to generate detailed cross-sectional images of the body. Adjusting these parameters is a balance between image quality and radiation dose. Radiologists and technologists carefully optimize these parameters based on the clinical needs of each individual patient, aiming to achieve a balance between diagnostic image quality and minimizing radiation exposure.

Chapters:
00:00 – Introduction
01:12 – X-Ray Tubes work like Incandescent Light Bulbs
04:28 – Tube Current
05:08 – Gantry Rotation Time
05:59 – Tube Current-Time Product (mAs)
06:27 – Peak Tube Voltage (kVp)
07:28 – Field of View (FOV)
09:19 – Coverage
11:35 – Acquisition Mode
12:42 – Pitch
13:56 – Reconstruction Algorithm
16:34 – Convolution Algorithm (Kernel)
17:14 – Slice Thickness & Interval
18:47 – Window Width & Level
24:41 – Effects of Scanning & Presentation Parameters
28:10 – CTDIvol & DLP
30:11 – Indications for IV Contrast
31:12 – Adverse Outcomes from IV Contrast
33:37 – Intravenous Accesses
35:28 – IV Contrast Injection Volumes
35:59 – Injection Delays & Bolus Tracking
39:04 – Oral Contrast

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