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Training Collections
Library Memberships
On-demand course library with video lectures, expert case reviews, and more
Fellowship Certificate™ Programs
Practice-focused training programs designed to help you gain experience in a specific subspecialty area.
Ultimate Learning Pass
Unlock access to our full Course Library and all self-paced Fellowships.
Continuing Medical Education (State CME)
Complete all of your state CME requirements in one convenient place.
Noon Conference (Free)
Get access to free live lectures, every week, from top radiologists.
Case of the Week (Free)
Get a free weekly case delivered right to your inbox.
Case Crunch: Rapid Case Review (Free)
Register for free live board reviews.
Dr. Resnick's MSK Conference
Learn directly from the MSK Master himself.
Lower Extremities MRI Conference
Musculoskeletal Imaging
For Training Programs
Supplement your training program with case-based learning for residents, registrars, fellows, and more.
For Private Practices
Upskill in high growth, advanced imaging areas.
Compliance
NewTrack, fulfill, and report on all your radiologists' credentialing and licensing requirements.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
5 topics, 33 min.
10 topics, 57 min.
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)
11 m.Scan Parameters Impacting Radiation Dose and Image Quality - Scan Time
4 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
4 m.Measures of Image Quality - Spatial Resolution
8 m.Measures of Image Quality - Contrast Resolution and Noise
5 m.Measures of Image Quality - Trade Offs
7 m.3 topics, 11 min.
4 topics, 19 min.
9 topics, 33 min.
Overview of CT Perfusion
4 m.Applications for CT Perfusion
2 m.How to Do CT Perfusion Safely
8 m.Overview of Dual Energy CT (DECT)
2 m.Techniques for Obtaining DECT
5 m.Advantages of DECT
5 m.Overview of Photon Counting CT (PCCT)
3 m.Energy Integrating Detector (EID) vs Photon Counting Detector (PCD)
7 m.Key Takeaways
3 m.1 topic, 1 min.
0:01
So here, one of the very great applications of CT
0:04
perfusion, which has now allowed for us to do
0:08
routinely,
0:10
is the brain perfusion CT.
0:12
And this has been proved to be very useful for diagnosing
0:16
and assessment of stroke. In fact, in the ICU or in
0:20
the emergency room, when patients come with a possibility of a
0:24
stroke, perfusion CT is often done to see what's the
0:28
vascularity in the brain or where it is blocking, and
0:32
so forth, as a quick assessment which provides the quantitative
0:36
information.
0:38
The other applications which are now penetrating into the field is the
0:42
body perfusion CT.
0:44
Especially this application has a lot of
0:48
value in it, especially used in oncology
0:51
purposes, where a lesion can be
0:54
characterized, and you can assess the tumor response to
0:58
any medication and radiation. And there are several studies showing
1:02
that especially liver tumors, when undergone
1:06
chemotherapy or radiation and going through a perfusion, you
1:09
can see the changes in the tumor
1:12
vascularity, which can basically follow the
1:16
evaluation of the treatment.
1:19
The other commonly done perfusion application is cardiac
1:23
perfusion CT, which is done to evaluate cardiac
1:26
functions.
Interactive Transcript
0:01
So here, one of the very great applications of CT
0:04
perfusion, which has now allowed for us to do
0:08
routinely,
0:10
is the brain perfusion CT.
0:12
And this has been proved to be very useful for diagnosing
0:16
and assessment of stroke. In fact, in the ICU or in
0:20
the emergency room, when patients come with a possibility of a
0:24
stroke, perfusion CT is often done to see what's the
0:28
vascularity in the brain or where it is blocking, and
0:32
so forth, as a quick assessment which provides the quantitative
0:36
information.
0:38
The other applications which are now penetrating into the field is the
0:42
body perfusion CT.
0:44
Especially this application has a lot of
0:48
value in it, especially used in oncology
0:51
purposes, where a lesion can be
0:54
characterized, and you can assess the tumor response to
0:58
any medication and radiation. And there are several studies showing
1:02
that especially liver tumors, when undergone
1:06
chemotherapy or radiation and going through a perfusion, you
1:09
can see the changes in the tumor
1:12
vascularity, which can basically follow the
1:16
evaluation of the treatment.
1:19
The other commonly done perfusion application is cardiac
1:23
perfusion CT, which is done to evaluate cardiac
1:26
functions.
Report
Faculty
Mahadevappa Mahesh, PhD, FACR, MS, FAAPM, FACMP, FSCCT, FIOMP
Professor of Radiology and Cardiology
Johns Hopkins University School of Medicine
Tags
Physics and Basic Science
Nuclear Medicine
CT
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