Biophysics & Medical Physics
6 terms
Patch Clamp Technique
Biophysics & Medical Physics
pA (Picoamperes) & GΩ (Gigaohm Resistance)
An electrophysiological laboratory technique used to record ion currents flowing through single individual ion channel proteins in cell membranes.
I_single_channel ~ 1–10 pA (Gigaohm Seal Measurement)
Poiseuille's Law of Blood Flow
Biophysics & Medical Physics
m³/s or L/min (Volumetric Flow Rate)
A fluid dynamics equation governing laminar viscous fluid flow through a cylindrical vascular pipe.
Q = (π r⁴ ΔP) / (8 η L)
Positron Emission Tomography (PET Scan)
Biophysics & Medical Physics
MBq (Activity) & Standardized Uptake Value (SUV)
A 3D nuclear medicine imaging technique detecting pairs of 511 keV gamma photons emitted during positron annihilation to map metabolic activity.
Coincidence Detection of 180° Back-to-Back 511 keV Gamma Photons
Protein Folding
Biophysics & Medical Physics
kJ/mol (Conformational Stability)
The physical process by which a polypeptide chain folds spontaneously into a characteristic 3D functional native structure.
Energy Funnel Concept: Minimizing Native State Free Energy G
Proton Therapy
Biophysics & Medical Physics
MeV (Proton Beam Energy ~70–250 MeV)
An advanced form of external beam radiation therapy utilizing accelerated proton beams to destroy cancerous tumors.
Bragg Peak Energy Deposition Curve: (-dE/dx) ∝ 1 / v²
Pulse Oximetry
Biophysics & Medical Physics
Percentage (% SpO₂)
A non-invasive medical monitoring method measuring arterial blood oxygen saturation (SpO₂) using differential optical absorption of red and infrared light.
Ratio R = (AC₆₆₀/DC₆₆₀) / (AC₉₄₀/DC₉₄₀) ⇒ % SpO₂