Image Credits

Effective October 6, 2026

Some images in our study games come from Wikimedia Commons. Each one is in the public domain or is shared under a Creative Commons licence that allows reuse. We thank the authors listed below.

We resized these images to fit our pages and made no other changes. Images under a CC BY-SA licence are shared under the same licence. The rest of IvyMed's content, including questions and explanations, is not covered by these licences.

If you are an author and something below is wrong, email hello@ivytutoring.net and we will fix it or remove the image.

ECG tracings

Used in: ECG Stripes game (Step 1 games).

Normal sinus rhythm (/cdn/commons/ecg/normal-sinus-rhythm.jpg). Source: Normal Sinus Rhythm Unlabeled.jpg on Wikimedia Commons. Author: Andrewmeyerson. Licence: CC BY-SA 3.0.
Atrial fibrillation (/cdn/commons/ecg/atrial-fibrillation.jpg). Source: Atrial Fibrillation in two leads.jpg on Wikimedia Commons. Author: PeaBrainC. Licence: CC BY-SA 4.0.
ST elevation myocardial infarction (/cdn/commons/ecg/inferior-stemi.jpg). Source: ST Segment Elevation Myocardial Infarction Unlabeled.jpg on Wikimedia Commons. Author: Andrewmeyerson. Licence: CC BY-SA 4.0.
Hyperkalemia (/cdn/commons/ecg/hyperkalemia.jpg). Source: Hyperkalemia ECG.jpg on Wikimedia Commons. Author: Dr. Michael-Joseph F. Agbayani and Dr. Eddieson Gonzales. Licence: CC BY 4.0.
Ventricular tachycardia (/cdn/commons/ecg/ventricular-tachycardia.jpg). Source: Electrocardiogram of Ventricular Tachycardia.png on Wikimedia Commons. Author: Ksheka (English Wikipedia). Licence: CC BY-SA 2.5.
Left bundle branch block (/cdn/commons/ecg/left-bundle-branch-block.jpg). Source: Left Bundle Branch Block ECG Unlabeled.jpg on Wikimedia Commons. Author: Andrewmeyerson. Licence: CC BY-SA 3.0.
Acute pericarditis (/cdn/commons/ecg/acute-pericarditis.jpg). Source: PericarditisECG.JPG on Wikimedia Commons. Author: James Heilman, MD. Licence: CC BY-SA 3.0.
Atrial flutter (/cdn/commons/ecg/atrial-flutter.jpg). Source: Aflutr ecg (CardioNetworks ECGpedia).jpg on Wikimedia Commons. Author: CardioNetworks ECGpedia. Licence: CC BY-SA 3.0.
Second-degree AV block, Mobitz I (Wenckebach) (/cdn/commons/ecg/mobitz-i-wenckebach.jpg). Source: De-Wenckebach (CardioNetworks ECGpedia).png on Wikimedia Commons. Author: Googletrans / CardioNetworks ECGpedia. Licence: CC BY-SA 3.0.
Third-degree AV block (/cdn/commons/ecg/third-degree-av-block.jpg). Source: 3rd degree heart block.PNG on Wikimedia Commons. Author: Gregory Marcus, MD, MAS, FACC. Licence: CC BY 3.0.
Right bundle branch block (/cdn/commons/ecg/right-bundle-branch-block.jpg). Source: Right Bundle Branch Block ECG Unlabeled.jpg on Wikimedia Commons. Author: Andrewmeyerson. Licence: CC BY-SA 3.0.
Torsades de pointes (/cdn/commons/ecg/torsades-de-pointes.jpg). Source: Torsades de Pointes TdP.png on Wikimedia Commons. Author: Jer5150. Licence: CC BY-SA 3.0.
Sinus bradycardia (/cdn/commons/ecg/sinus-bradycardia.jpg). Source: Sinus Bradycardia.jpg on Wikimedia Commons. Author: Andrewmeyerson. Licence: CC BY-SA 3.0.
Anterior STEMI (/cdn/commons/ecg/anterior-stemi.jpg). Source: ST elevation myocardial infarction ECG (cropped).jpg on Wikimedia Commons. Author: Case report authors, Cureus 2018;10(4):e2523. Licence: CC BY 4.0.

Pathology, microbiology and radiology images

Used in: HY Picture Quiz (Step 1 games).

Asbestosis (/cdn/commons/quiz/asbestosis.jpg). Source: Ferruginous body.jpg on Wikimedia Commons. Author: Nephron. Licence: CC BY-SA 3.0.
Alzheimer's Disease (/cdn/commons/quiz/alzheimer-s-disease.jpg). Source: Neurofibrillary tangles in the Hippocampus of an old person with Alzheimer-related pathology, Gallyas silver stain.JPG on Wikimedia Commons. Author: Patho. Licence: CC BY-SA 3.0.
Schwannoma (/cdn/commons/quiz/schwannoma.jpg). Source: Antoni A area of schwannoma with Verocay bodies.png on Wikimedia Commons. Author: Pezzali LG, Rostirolla GF, Luiz CB, et al.. Licence: CC BY 4.0.
Pilocytic astrocytoma (/cdn/commons/quiz/pilocytic-astrocytoma.jpg). Source: Rosenthal fibers.jpg on Wikimedia Commons. Author: Armed Forces Institute of Pathology (AFIP). Licence: Public domain.
Meningioma (/cdn/commons/quiz/meningioma.jpg). Source: Histopathology of meningioma.jpg on Wikimedia Commons. Author: Mikael Häggström, M.D.. Licence: CC0.
Glioblastoma multiforme (/cdn/commons/quiz/glioblastoma-multiforme.jpg). Source: GBM pseudopalisading necrosis.jpg on Wikimedia Commons. Author: Jensflorian. Licence: CC BY-SA 3.0.
Ependymoma (/cdn/commons/quiz/ependymoma.jpg). Source: Ependymoma true ependymal rosettes and pseudorosettes.jpg on Wikimedia Commons. Author: Jensflorian. Licence: CC BY-SA 3.0.
Craniopharyngioma (/cdn/commons/quiz/craniopharyngioma.jpg). Source: Adamantinomatous craniopharyngioma - low mag.jpg on Wikimedia Commons. Author: Nephron. Licence: CC BY-SA 3.0.
Choriocarcinoma (/cdn/commons/quiz/choriocarcinoma.jpg). Source: Metastatic choriocarcinoma (5433741268).jpg on Wikimedia Commons. Author: Yale Rosen. Licence: CC BY-SA 2.0.
Cardiac Myxoma (/cdn/commons/quiz/cardiac-myxoma.jpg). Source: Atrial myxoma.jpg on Wikimedia Commons. Author: Armed Forces Institute of Pathology (AFIP). Licence: Public domain.
Candida (/cdn/commons/quiz/candida.jpg). Source: Vaginal candidiasis, Gram stain.jpg on Wikimedia Commons. Author: Dr Graham Beards. Licence: CC BY-SA 4.0.
Aspergillus (/cdn/commons/quiz/aspergillus.jpg). Source: Cerebral aspergillosis in an immunocompromised child, HE.jpg on Wikimedia Commons. Author: Patho. Licence: CC BY-SA 3.0.
Aortic Dissection (/cdn/commons/quiz/aortic-dissection.jpg). Source: DissectionCT.png on Wikimedia Commons. Author: James Heilman, MD. Licence: CC BY-SA 3.0.
Sickle Cell Anemia (/cdn/commons/quiz/sickle-cell-anemia.jpg). Source: Sickle Cell Anemia (5610746554).jpg on Wikimedia Commons. Author: Ed Uthman. Licence: CC BY 2.0.
Iron Deficiency Anemia (/cdn/commons/quiz/iron-deficiency-anemia.jpg). Source: Iron-deficiency Anemia, Peripheral Blood Smear (4422704616).jpg on Wikimedia Commons. Author: Ed Uthman. Licence: CC BY 2.0.
Human Herpesvirus 8 (HHV-8) (/cdn/commons/quiz/human-herpesvirus-8-hhv-8.jpg). Source: Kaposi's Sarcoma.jpg on Wikimedia Commons. Author: National Cancer Institute. Licence: Public domain.
Hodgkin's lymphoma (/cdn/commons/quiz/hodgkin-s-lymphoma.jpg). Source: Hodgkin Disease, Reed-Sternberg Cell.jpg on Wikimedia Commons. Author: Ed Uthman. Licence: CC BY-SA 2.0.
Endometriosis (/cdn/commons/quiz/endometriosis.jpg). Source: Endometriosis of the ovary.jpg on Wikimedia Commons. Author: Nephron. Licence: CC BY-SA 3.0.
Blastomycosis (/cdn/commons/quiz/blastomycosis.jpg). Source: Blastomyces dermatitidis GMS.jpeg on Wikimedia Commons. Author: Medmyco. Licence: CC0.
Basal Cell Carcinoma (/cdn/commons/quiz/basal-cell-carcinoma.jpg). Source: Basal cell carcinoma - high mag.jpg on Wikimedia Commons. Author: Nephron. Licence: CC BY-SA 3.0.
Actinomyces (/cdn/commons/quiz/actinomyces.jpg). Source: Actinomycosis (5287304877).jpg on Wikimedia Commons. Author: Yale Rosen. Licence: CC BY-SA 2.0.
Tubular adenoma (/cdn/commons/quiz/tubular-adenoma.jpg). Source: Tubular adenoma - colon, intermed. mag.jpg on Wikimedia Commons. Author: CoRus13. Licence: CC BY-SA 4.0.
Villous adenoma (/cdn/commons/quiz/villous-adenoma.jpg). Source: Villous Adenoma of the Sigmoid Colon.jpg on Wikimedia Commons. Author: Ed Uthman. Licence: CC BY-SA 2.0.
Subdural hematoma (SDH) (/cdn/commons/quiz/subdural-hematoma-sdh.jpg). Source: Trauma subdural.jpg on Wikimedia Commons. Author: Glitzy queen00 (English Wikipedia). Licence: Public domain.
Epidural hematoma (EDH) (/cdn/commons/quiz/epidural-hematoma-edh.jpg). Source: Traumatic acute epidual hematoma.jpg on Wikimedia Commons. Author: Jpogi. Licence: CC BY-SA 3.0.
Squamous Cell Carcinoma (/cdn/commons/quiz/squamous-cell-carcinoma.jpg). Source: Squamous cell carcinoma skin, Well differentiated 10X.jpg on Wikimedia Commons. Author: Department of Pathology, Calicut Medical College. Licence: CC BY-SA 4.0.
Seborrheic keratosis (/cdn/commons/quiz/seborrheic-keratosis.jpg). Source: Seborrheic keratosis on human back.jpg on Wikimedia Commons. Author: James Heilman, MD. Licence: CC BY-SA 3.0.
RBC cast (/cdn/commons/quiz/rbc-cast.jpg). Source: Red blood cell cast in urine sediment.jpg on Wikimedia Commons. Author: Rian Kabir. Licence: CC BY 2.0.
Pseudomembranous colitis (/cdn/commons/quiz/pseudomembranous-colitis.jpg). Source: Clostridioides (pseudomembranous) colitis– close-up.jpg on Wikimedia Commons. Author: Narraburra. Licence: CC0.
Multiple Myeloma (/cdn/commons/quiz/multiple-myeloma.jpg). Source: Multiple myeloma.jpg on Wikimedia Commons. Author: Dr. Roshan Nasimudeen. Licence: CC BY-SA 3.0.
Keloid (/cdn/commons/quiz/keloid.jpg). Source: Keloid, Trunk.JPG on Wikimedia Commons. Author: Htirgan. Licence: CC BY-SA 3.0.
Hydatidiform mole (/cdn/commons/quiz/hydatidiform-mole.jpg). Source: Complete Hydatidiform Mole (39611782015).jpg on Wikimedia Commons. Author: Ed Uthman. Licence: CC BY 2.0.
Horseshoe Kidney (/cdn/commons/quiz/horseshoe-kidney.jpg). Source: HorseshoeKid2.png on Wikimedia Commons. Author: James Heilman, MD. Licence: CC BY-SA 4.0.
Diverticulosis (/cdn/commons/quiz/diverticulosis.jpg). Source: Diverticulum of the colon.jpg on Wikimedia Commons. Author: MAC 06. Licence: CC BY 4.0.
Diffuse type gastric carcinoma (/cdn/commons/quiz/diffuse-type-gastric-carcinoma.jpg). Source: Gastric signet ring cell carcinoma histopatholgy (1).jpg on Wikimedia Commons. Author: KGH. Licence: CC BY-SA 3.0.
Leiomyoma (/cdn/commons/quiz/leiomyoma.jpg). Source: Multiple uterine leiomyoma.jpg on Wikimedia Commons. Author: علاء. Licence: CC BY-SA 4.0.
Hemangioblastoma (/cdn/commons/quiz/hemangioblastoma.jpg). Source: Cerebellar hemangioblastoma high mag.jpg on Wikimedia Commons. Author: Nephron. Licence: CC BY-SA 3.0.
Taenia Solium (/cdn/commons/quiz/taenia-solium.jpg). Source: Taenia solium tapeworm scolex with its four suckers and two rows of hooks 5262 lores.jpg on Wikimedia Commons. Author: CDC Public Health Image Library (PHIL 5262). Licence: Public domain.
Alcoholic hepatitis (/cdn/commons/quiz/alcoholic-hepatitis.jpg). Source: Mallory body high mag cropped.jpg on Wikimedia Commons. Author: Nephron. Licence: CC BY-SA 3.0.
Rubeola (/cdn/commons/quiz/rubeola.jpg). Source: Koplik spots, measles 2019.jpg on Wikimedia Commons. Author: Dctrzl. Licence: CC BY-SA 4.0.
Rapidly progressive glomerulosclerosis (RPGN) (/cdn/commons/quiz/rapidly-progressive-glomerulosclerosis-rpgn.jpg). Source: Crescentic glomerulonephritis Periodic acid silver methanamine stain.JPEG on Wikimedia Commons. Author: Ramaswami A, Kandaswamy T, Rajendran T, et al.. Licence: CC BY 2.0.
Parkinson's Disease (/cdn/commons/quiz/parkinson-s-disease.jpg). Source: Lewy body in the substantia nigra from a person with Parkinson's disease.jpg on Wikimedia Commons. Author: Tulemo. Licence: CC BY-SA 4.0.
Paracoccidioidomycosis (/cdn/commons/quiz/paracoccidioidomycosis.jpg). Source: Paracoccidioides brasiliensis 01.jpg on Wikimedia Commons. Author: CDC / Dr. Lucille K. Georg (PHIL 527). Licence: Public domain.
Gardnerella vaginalis (/cdn/commons/quiz/gardnerella-vaginalis.jpg). Source: Clue cells in bacterial vaginosis.jpg on Wikimedia Commons. Author: Dr Graham Beards. Licence: CC BY-SA 4.0.
Cirrhosis (/cdn/commons/quiz/cirrhosis.jpg). Source: Cirrosi micronodular.1427.jpg on Wikimedia Commons. Author: Amadalvarez. Licence: CC BY-SA 4.0.
Autosomal dominant polycystic kidney disease (ADPKD) (/cdn/commons/quiz/autosomal-dominant-polycystic-kidney-disease-adpkd.jpg). Source: Adult Polycystic Kidney.jpg on Wikimedia Commons. Author: Ed Uthman. Licence: CC BY 2.0.
Bronchiectasis (/cdn/commons/quiz/bronchiectasis.jpg). Source: Massive Bronchiektasen - CT LF axial 001.jpg on Wikimedia Commons. Author: Hellerhoff. Licence: CC BY-SA 3.0.