# Nuclear Cardiology visual attributions

Licensed and public-domain media used in the Nuclear Cardiology Guide. Page captions retain a short credit; this file records the complete source and license trail.

| Local file | Work / creator | Source | License | Display or modification note |
|---|---|---|---|---|
| `first-tc99m-generator-public-domain.jpg` | *First technetium-99m generator, 1958* — Brookhaven National Laboratory | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:First_technetium-99m_generator_-_1958.jpg) | Public-domain U.S. Department of Energy work | Downsampled for web delivery; no additional crop or content edit. |
| `tc99m-generator-ingrowth-cc-by-sa-3.svg` | *Technetium-99m generator content versus time* — Dirk Hünniger; modified by Hbf878 | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:Technetium-99m_Generator_Tc-99m-Contend_verus_Time.svg) | [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/) | Source SVG unmodified; displayed with CSS sizing only. |
| `parallel-hole-collimator-public-domain.svg` | *Gamma Camera Parallel-Hole Collimator* — Dirk Hünniger, based on Kieran Maher | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:Gamma_Camera_Parallel_Hole_Collimator-de.svg) | Public domain | Source SVG unmodified; displayed with CSS sizing only. |
| `hybrid-spect-ct-public-domain.png` | *Hybrid SPECT/CT Scanner, labeled* — Kieran Maher; cropped/labeled by Dirk Hünniger | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:HybridSpectCTScannerLabeled.png) | Public domain | Source file unmodified; displayed with CSS sizing only. |
| `pet-schema-public-domain.png` | *PET-schema* — Jens Maus | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:PET-schema.png) | Public domain | Source file unmodified; displayed with CSS sizing only. |
| `spect-sinogram-cc-by-3.jpg` | *SPECT Camera Sinogram* — CSIRO | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:CSIRO_ScienceImage_257_SPECT_Camera_Sinogram.jpg) | [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/) | Downsampled for web delivery; no crop or content edit. |
| `cardiac-attenuation-correction-public-domain.jpg` | *Cardiac nuclear medicine scans comparing attenuation correction* — Kieran Maher | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:Cardiac_nuclear_medicine_scans_comparing_attenuation_correction.jpg) | Public domain | Source file unmodified; displayed at modest size because the source is low resolution. |
| `gamma-camera-off-peak-cc-by-sa-4.jpg` | *Fugt-spect off peak2* — LasseRS | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:Fugt-spect_off_peak2.jpg) | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) | Downsampled for web delivery; no crop or content edit. |
| `spect-vs-pet-balanced-ischemia-cc-by-4.jpg` | *Tetrafosmin SPECT versus H₂¹⁵O cardiac PET* — Driessen et al. | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:Tetrafosmin_SPECT_vs_H2O_cardiac_PET.jpg) | [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) | Source file unmodified; displayed with CSS sizing/crop only. |
| `pet-scanner-cc0.png` | *Positron emission tomography machine* — Spacecoastcreative | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:Positron_emission_tomography.png) | [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/) | Source file unmodified; displayed with CSS sizing only. |
| `gamma-camera-diagram-cc-by-sa-4.jpg` | *Gamma Camera Diagram* — Educate-UK | [Wikimedia Commons source](https://commons.wikimedia.org/wiki/File:6-5-2-1_Gamma_Camera_Diagram.jpg) | [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/) | Source file unmodified; displayed with CSS sizing/crop only. |

The project-authored HTML/CSS teaching diagrams are original UI components, not copies of textbook figures. No AI-generated clinical images are used in this guide.

October 17, 2026 review: retained images and asset-specific license checks are recorded in `review-attribution.json`. Original files were not changed. Chapter 27 additionally reuses Al Taha et al. (2023), Figure 3 under CC BY 4.0, intact from the cardiac-amyloidosis guide. Original flow-comparison SVG artwork and source licensing are in `review-originals-license.txt`.