Andrew Dixon ◉

MBBS (Hons) FRANZCR

Andrew is a Consultant Radiologist at the Alfred Hospital in Melbourne, Australia. He has primary subspecialty expertise in neuroradiology, with secondary interests in musculoskeletal imaging and trauma radiology.

He is a keen radiology educator, having achieved international recognition for his courses including Radiopaedia's Trauma Radiology Course, Emergency Radiology Course and Medical Imaging Anatomy Course. He founded the Radiology Channel on YouTube.

He is currently Radiopaedia's academic director and was co-convenor of the Radiopaedia Virtual Conference in 2020, 2021, 2022 and 2023. His favourite emoji is 🍍

Andrew is a director of Radiopedia Events Pty Ltd

Disclosures:

Nothing to disclose

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Andrew Dixon ◉

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TIPIC syndrome

Posterior dislocation of sternoclavicular joint

Sclerotic rib lesion simulating a pulmonary nodule

Mandible fractures

Inferior frontal contusion increased over 24 hours

Small carotid body tumor

Jugular foramen schwannoma

Sacral and parasymphyseal insufficiency fractures

Rib fibrous dysplasia

Crowned dens - CPPD

Milwaukee shoulder (probable)

Longus colli calcific tendinitis

Prepatellar gout on dual energy CT

Polyarticular foot gout on dual energy CT

Osteoporosis circumscripta

Right hemipelvis metastases simulating Paget disease

Hamate fracture subluxation

Lung cancer with pathological humerus fracture

Distal intestinal obstruction syndrome

Vertebral Paget disease with picture frame appearance

Herpes zoster ophthalmicus with orbital myositis

Acute PCA infarct

Jugulotympanic paraganglioma

Liver laceration with biloma

Right diaphragmatic injury initially missed

Amoebic liver abscesses

Acute internal carotid artery dissection

Delayed traumatic diaphragm rupture

Traumatic dural venous sinus thrombosis

Prominent pericardial recess on trauma CT

Blood on the tentorium simulating hyperdense transverse sinus

Thoracic spine fracture dislocation

Traumatic dural venous sinus thrombosis with intrasinus gas

Iatrogenic pulmonary hemorrhage related to chest drain in trauma patient

Traumatic dural venous sinus gas with thrombosis

Splenic and renal injuries

Lumbar disc extrusion on CT

Accessory left horizontal fissure with lingular pneumonia

Cord compression due to osseous metastases

Symptomatic foramen tympanicum

Skin fold mimicking pneumothorax

Images for MCQs

iPhone 6+ on CT scout film

Eroded gastric band

Active colonic bleed on CT

Dural venous sinus thrombosis and intracranial hypertension

Patella fracture simulating bipartite patella

Sternal fracture on CT

Occipital extradural hematoma simulating venous sinus thrombosis

Normal pelvic bone CT (age 16)

Movement artifact simulating sternal fracture

Hepatic hemangioma simulating hepatic laceration

Bilateral perched facets with cord injury

Traumatic vertebral artery to jugular vein arteriovenous fistula

Subtle sacral fracture with trace pre-sacral hemorrhage

Splenic injury with active bleeding treated with embolization

Penetrating wood injury to axilla

Penetrating wood foreign body injury to axilla

Inferior frontal lobe traumatic contusion

Traumatic aortic rupture

Traumatic pneumomediastinum

Normal trauma spine imaging (age 16)

Sternal fracture with retrosternal hemorrhage

Falx and cavernous sinus fat

Prominent cervical vertebral venous channels

Normal thymus and pericardial recess

Normal thymus on trauma CT

Pelvic fracture with extraperitoneal hemorrhage

Normal CT angiogram of pelvis

Chance fracture

Apical pneumothorax on cervical spine CT

Tension pneumocephalus secondary to frontal sinus fracture

Normal wrist CT including 3D

Aneursym related subarachnoid hemorrhage with hydrocephalus

MCA infarct with CT perfusion and clot retrieval

Prominent perivascular space

Acute cholecystitis and ureteric colic

Tympanic paraganglioma

Disclosures: