engineering

Biomedical Imaging & Diagnostics

The science of visualizing living tissue — from CT back-projection and MRI spin echoes to ultrasound pulse-echo, PET tracer kinetics, and X-ray attenuation. These modalities transform raw physical signals into diagnostic images that drive modern medicine.

biomedical imagingCT scanMRIultrasoundPET scanX-raymedical diagnosticsradiologyHounsfield units

Biomedical imaging encompasses the physics and engineering behind every modality used to peer inside the human body without surgery. Computed tomography reconstructs cross-sectional slices from X-ray projections, MRI exploits nuclear spin relaxation to distinguish soft tissues, ultrasound maps acoustic impedance boundaries in real time, PET traces metabolic activity through radioactive decay, and conventional X-ray leverages differential attenuation to reveal bone and contrast-filled structures.

These simulations let you manipulate the core parameters of each modality — projection angles, relaxation times, pulse frequencies, tracer uptake rates, and photon energies — to build intuition for how raw physics becomes a clinical image. Every visualization runs in real time with physically grounded equations.

5 interactive simulations

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CT Back-Projection & Hounsfield Units

Simulate filtered back-projection in computed tomography — explore how projection count, filter kernel, and tissue density map to Hounsfield units

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MRI Spin Echo & Relaxation Times

Simulate MRI spin-echo signal formation — explore how T1, T2, TR, and TE control tissue contrast in magnetic resonance imaging

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PET Tracer Kinetics & SUV

Simulate PET tracer uptake and clearance — explore how injection dose, body weight, uptake rate, and decay constant determine standardized uptake values

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Ultrasound Pulse-Echo & B-Mode Resolution

Simulate ultrasound pulse-echo imaging — explore how frequency, depth, and tissue impedance affect B-mode resolution and penetration

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X-ray Beer-Lambert Attenuation & Contrast

Simulate X-ray attenuation through tissue layers — explore how photon energy, tissue thickness, and material density affect transmitted intensity and image contrast