Friday, November 29, 2024

Willi Kalender (1949–2024)

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Medical physicist Willi Kalender died on October 20 at the age of 75. Kalender was an inventor of spiral computed tomography . Russ Hobbie ...
Friday, November 22, 2024

From Brownian Motion to Virtual Biopsy: A Historical Perspective from 40 years of Diffusion MRI

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From Brownian Motion to Virtual Biopsy: A Historical Perspective from 40 years of Diffusion MRI, by Denis Le Bihan Denis Le Bihan recently ...
Friday, November 15, 2024

Trusted Information on Public Health

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Where can you find trusted information about public health ? Ordinarily, I would say from the National Institutes of Health (NIH), the Cent...
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Friday, November 8, 2024

International Day of Medical Physics Poster

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Yesterday was the International Day of Medical Physics . This event is organized by the International Organization for Medical Physics , and...
Friday, November 1, 2024

Why Are Oxygen and Nitrogen Not Greenhouse Gases But Carbon Dioxide and Water Vapor Are?

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In last week’s blog post about A Toy Model for Climate Change , I wrote “The main constituents of the atmosphere—oxygen and nitrogen—are tr...
Friday, October 25, 2024

A Toy Model of Climate Change

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Introduction A screenshot of the online book Math for the People . In Introductory Physics for Medicine and Biology , Russ Hobbie and I mak...
Friday, October 18, 2024

A Continuum Model for Volume and Solute Transport in a Pore

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As Gene Surdutovich and I prepare the 6th edition of Intermediate Physics for Medicine and Biology , we have to make many difficult decisio...
Friday, October 11, 2024

Extracellular Magnetic Measurements to Determine the Transmembrane Action Potential and the Membrane Conduction Current in a Single Giant Axon

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Forty years ago today I was attending my first scientific meeting: The Society for Neuroscience 14 th Annual Meeting, held in Anaheim, Cal...
Friday, October 4, 2024

The Difference between Traditional Magnetic Stimulation and Microcoil Stimulation: Threshold and the Electric Field Gradient

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In Chapter 7 of Intermediate Physics for Medicine and Biology , Russ Hobbie and I discuss electrical stimulation of nerves . In particular,...
Friday, September 27, 2024

Taylor Diffusion

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In Chapter 1 of Intermediate Physics for Medicine and Biology , Russ Hobbie and I discuss Poiseuille flow : the flow of a viscous fluid in ...