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.

Andrew is a director of Radiopedia Events Pty Ltd

Disclosures:

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Andrew Dixon ◉

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Patchy right lower lobe consolidation

Sclerotic rib lesion simulating a pulmonary nodule

Ex vivo lung perfusion

Delayed traumatic diaphragm rupture

Endotracheal tube in bronchus intermedius

Iatrogenic pulmonary hemorrhage related to chest drain in trauma patient

Accessory left horizontal fissure with lingular pneumonia

Skin fold mimicking pneumothorax

Images for MCQs

Normal chest x-ray with diaphragmatic slips

Normal chest x-ray with Mach effect

Right upper lobe pneumonia

Pneumothorax on expiratory radiograph

Supine pneumothorax (deep sulcus sign)

Normal thymus and pericardial recess

Normal thymus on trauma CT

Lung point sign of pneumothorax on ultrasound

Diaphragmatic eventration

Acute epicardial fat necrosis

Apical segment left lower lobe consolidation

Saber sheath trachea

Nasogastric tube in left lower lobe with pneumothorax

Nasogastric tube in right lower lobe

Pulmonary edema

Normal CT chest

Right lower lobe sub-segmental pulmonary emboli

Large pulmonary embolism with right heart strain

Medial segment of right middle lobe consolidation

Left lower lobe pneumonia

Endotracheal tube in right main bronchus with left lung collapse in evolution

Pericarditis

Left lower lobe pneumonia

Acute pulmonary edema on CT

Traumatic aortic injury with small renal infarct

Thoracic distraction injury

Tension pneumothorax

Tension pneumothorax post knife stabbing

Normal supine trauma chest x-ray in an obese woman

Diaphragmatic rupture

Extensive pulmonary contusion and deep sulcus sign

Combined arterial and portal venous phase trauma CT

Traumatic flail chest

Chest crush injury

Rib and scapular fractures

Traumatic aortic injury

Multitrauma chest x-ray

Large traumatic hemothorax

Normal trauma series x-rays

Trauma chest x-ray with rib fractures and subcutaneous emphysema

Hemothorax due to rib fractures

Normal supine trauma chest x-ray

Normal supine trauma chest x-ray with rotation

Apical capping due to thoracic fractures, pelvic trauma

Normal trauma chest, pelvis and spine imaging

Normal trauma chest and pelvis x-rays

Pneumothorax and pelvic fractures

Traumatic aortic injury

Hemothorax

Perifissural nodule

Left upper lobe pneumonia and pectus excavatum

Limbic encephalitis - small cell lung cancer

Coarctation of the aorta

Re-expansion pulmonary edema

Chlamydia pneumonia

Absent clavicles

Partial anomalous pulmonary venous return (left upper lobe)

Bilateral anterior shoulder dislocation

Pneumocystis pneumonia

Intralobar pulmonary sequestration

Extramedullary hematopoiesis - thalassemia

Esophageal dilatation due to obstructing gastric band

Congenital lobar emphysema

Intralobar pulmonary sequestration

Dilated cardiomyopathy with pulmonary edema

Congenital lobar emphysema

Round pneumonia

Multiple pulmonary arteriovenous malformations with background hereditary hemorrhagic telangiectasia

Complete tracheal rings

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