Class Notes (890,439)
CA (532,781)
Western (51,415)
Lecture 6

Medical Biophysics 3503G Lecture 6: MEDICAL BIOPHYSICS LEC 4

2 Pages
119 Views

Department
Medical Biophysics
Course Code
Medical Biophysics 3503G
Professor
James Lacefield

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
MEDICAL BIOPHYSICS From last lecture Contrast detail analysis some advantages and disadvantages has direct link tto labbratory imae qualiteies we studied previously, contrast detail anlaysis allows to get intiuition, what type of fetures imporving reosuiton would help us detect better, what type of features imporivng SNR would help better weakness was it was limited to idealized test images, where you have circular feature you wanted to test aginst uniform background and in cancer imaging context, you’re more likely to counter something more complicated today we learn about tool that has ability to be applied to clinical images, but has disandavantage, that connection of this tool to basic image parrameters like resolution, and SNR is more abstract Reciever operating characteristic (ROC) this tool is applied in any situation where you want ti study ability to detect something tool is easiest to understand by describing its procedure, there’s a multistep procedure to use this tool, procedure is: Select one condition to detect or classify (ex. patient has tumour or not) focus on detecting To do experiment must image a large propulaion of indivieduals, including many individuals with/without disease (preselect individuals based on clinical criteria) Need a method to objectively or subjectively rate the image choose orginal parameter or criteria as basis for diagnosis Objective: size, contrast, etc. Subjective: N-pint scale indicating radiologists certainty about diagnosis (typically N = 5) ROC procedure Have 100 indivisuals, and rank on a 5 point scale Works by: No disease in patient, thye score 1 Pretty sure theres no cancer, score 2 Can’t diceide based on images, score 3 Pretty sure there is cancer based on images score
More Less
Unlock Document
Subscribers Only

Only 80% of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
Subscribers Only
You're Reading a Preview

Unlock to view full version

Unlock Document
Subscribers Only

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit