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Biophysics & Medical Physics

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Biophysics & Medical Physics

Bio-optics

The study of light interaction with biological tissues and the development of optical diagnostic and therapeutic instruments.

Radiative Transport Equation (RTE) in Turbid Tissues Scattering Coefficient μ_s (cm⁻¹) & Absorption μ_a (cm⁻¹)
Biophysics & Medical Physics

Bioenergetics

The branch of biophysics and biochemistry studying energy transformation, transfer, and coupling mechanisms in living organisms.

ΔG = ΔH - T ΔS, ΔG'° = -R T ln K_eq kJ/mol (Gibbs Free Energy)
Biophysics & Medical Physics

Bioimpedance

The measure of a biological tissue's opposition to the flow of electric alternating current.

Z = R + i X_c = √(R² + X_c²) Ω (Ohms)
Biophysics & Medical Physics

Biological Transducers

Specialized sensory receptor cells that convert external physical or chemical stimuli into graded bioelectrical signals.

Transduction: Physical Stimulus Energy → Receptor Potential (mV) mV / pA (Receptor Signal Output)
Biophysics & Medical Physics

Bioluminescence

The enzymatic production and emission of light by living organisms through chemical reactions converting ATP into photon energy.

Luciferin + O₂ + ATP → Oxyluciferin + AMP + PPi + h ν (Light) Photons/s (Bioluminescent Flux)
Biophysics & Medical Physics

Biomechanics of Gait

The quantitative analysis of human locomotion mechanics, muscle force coordination, and ground reaction forces during walking or running.

Center of Mass Inverted Pendulum Energy Exchange (T ↔ V) m/s (Walking Speed) & Ground Reaction Force (N)
Biophysics & Medical Physics

Bone Mechanics

The study of mechanical structural behavior, anisotropy, and remodeling of bone tissue under physical loads.

Stress σ = F / A, Young's Modulus E_cortical ≈ 18 GPa MPa / GPa (Tensile & Compressive Strength)
Biophysics & Medical Physics

Brachytherapy

An internal radiation therapy technique where sealed radioactive sources are placed directly inside or adjacent to a tumor.

Inverse Square Dose Falloff: D(r) ∝ 1 / r² Gy/h (High or Low Dose Rate)