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Physics - CT

Content Reviewed: July 13, 2026

Mastery Series
Preview Course

2.5 CME

32 Videos

2 hr. 37 min.

Course Description

Join Dr. M. Mahesh as he presents a comprehensive review of CT physics and technology, guiding learners through the fundamental principles that underpin modern CT practice.

Beginning with the history and evolution of CT, he explores advanced imaging technologies and current trends in CT utilization. Follow along to learn how CT systems operate and how technological advancements continue to expand clinical applications across radiology. Dr. Mahesh also examines image quality optimization, the key scan parameters that influence both image qualily and radiation exposure.

This course also provides an in-depth review of CT dosimetry, covering dose measurement, dose descriptors, effective dose estimation, and dose modulation strategies. Dr. Mahesh concludes the course with an exploration of advanced CT applications and emerging technologies like physics and clinical implementation of cardiac CT, CT perfusion imaging, Dual-Energy CT (DECT), and Photon-Counting CT (PCCT).

Take this course to get an understanding of acquisition techniques, clinical applications, safety considerations, and the advantages of these evolving technologies, while gaining insight into the future direction of CT imaging.

Join Dr. M. Mahesh as he presents a comprehensive review of CT physics and technology, guiding learners through the fundamental principles that underpin modern CT practice.

Faculty

Mahadevappa Mahesh, PhD, FACR, MS, FAAPM, FACMP, FSCCT, FIOMP

Professor of Radiology and Cardiology

Johns Hopkins University School of Medicine

Overview and History of CT

10 m

Basics of CT

10 m

Fundamentals of MDCT

5 m

Advanced CT Technologies

5 m

CT Utilization

3 m

Fundamentals of CT Image Quality

4 m

Scan Parameters Impacting Radiation Dose and Image Quality - Tube Current (mA)

9 m

Scan Parameters Impacting Radiation Dose and Image Quality - Tube Voltage (kV)

10 m

Scan Parameters Impacting Radiation Dose and Image Quality - Scan Time

3 m

Scan Parameters Impacting Radiation Dose and Image Quality - Pitch

7 m

Scan Parameters Impacting Radiation Dose and Image Quality - Scanner Fundamentals

3 m

Scan Parameters Impacting Radiation Dose and Image Quality - Reconstruction Algorithms

3 m

Measures of Image Quality - Spatial Resolution

7 m

Measures of Image Quality - Contrast Resolution and Noise

5 m

Measures of Image Quality - Trade Offs

6 m

Introduction to Advanced CT Functions

1 m

Cardiac CT Acquisitions

5 m

Advancements in Cardiac CT

6 m

How CT Doses Are Measured

5 m

CT Dose Descriptors

5 m

Understanding CT Dose Displays and Effective Dose Estimation

5 m

CT Dose Modulation

6 m

Overview of CT Perfusion

4 m

Applications for CT Perfusion

1 m

How to Do CT Perfusion Safely

7 m

Overview of Dual Energy CT (DECT)

2 m

Techniques for Obtaining DECT

4 m

Advantages of DECT

4 m

Overview of Photon Counting CT (PCCT)

2 m

Energy Integrating Detector (EID) vs Photon Counting Detector (PCD)

6 m

Key Takeaways

3 m

CT Physics Resources

2 m

Course Evaluation

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