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A
- Abdominal aortic aneurysm
- Abdominal hernias
- Abducens nerve (CN VI)
- ABER position
- Aberrant internal carotid artery
- Aberrant right subclavian artery
- Accessory middle cerebral artery
- Accessory ossicle at the ulnar styloid
- Accessory right inferior hepatic vein
- Achalasia
- Achilles tendon tear
- Achondroplasia
- ACL ganglion cysts
- ACL mucoid degeneration
- Acoustic artery
- Acoustic schwannoma
- Acquired aortic conditions
- Acquired cholesteatoma
- Acromial types
- Acromio-clavicular Dislocation
- Acromioclavicular joint configuration
- Acromioclavicular joint injury grading
- Acute Airspace Opacities - bilateral
- Acute Airspace Opacities - unilateral
- Acute Airspace Opacities with lymph node enlargement
- Acute disseminated encephalomyelitis (ADEM)
- Acute epiploic appendagitis
- Acute otomastoiditis
- Acute Pancreatitis
- Acute respiratory distress syndrome
- Acute sinusitis
- Adenomatoid odontogenic tumour
- Adenomyomatosis
- Adrenal adenoma
- Adrenal haemorrhage
- Adult cystic renal disease
- AEIOU
- Agenesis of the corpus callosum
- Agger nasi cells
- Aggressive angiomyxoma
- AIDS cholangiopathy
- Air bronchogram
- Air crescent sign
- Airspace Opacities
- Alberta Stroke Program Early CT Score (ASPECTS)
- All Idiopathic Chronic Lung Diseases aRe Nonspecific
- Allergic bronchopulmonary aspergillosis
- Alpha angle (DDH)
- ALS
- Ameloblastic fibroma
- Ameloblastoma
- AMEN
- American Spinal Injury Association impariment scale
- Amyotrophic lateral sclerosis
- Aneurysmal bone cyst (ABC)
- Aneurysms
- Aneurysms and dissection
- Angel wing sign
- Angiographic string sign
- Angiomyolipoma
- Angiosarcoma
- Angiosarcoma (MSK)
- Animal and animal produce inspired signs
- Ankylosing spondylitis
- Annular tear
- Anterior cerebral artery (ACA)
- Anterior communicating artery (ACOM)
- anterior forceps
- Anterior forceps
- Anterior hip pain
- Anterior inferior cerebellar artery (AICA)
- Anterior inferior iliac spine avulsion injury
- Anterior labroligamentous periosteal sleeve avulsion (ALPSA) lesion
- Anterior mediastinal mass (DDx)
- Anterior shoulder capsular insertion
- Antral nipple sign
- Aorta
- Aorta - variants
- Aortic arch
- Aortic arch - variants
- Aortic dissection
- Aortic intramural haematoma
- Aphthoid uclers
- Appendicitis
- Apple Core sign
- Apple-peel intestinal atresia
- Aqueduct stenosis
- Arachnoid cyst
- Arnold's nerve
- Arteriosclerosis
- Arteriovenous malformation (AVM)
- Asbestosis
- Ascending aorta
- aseptic haemogenic meningitis
- ASIA impariment scale
- ASPECTS score
- Aspergillosis
- Astrocytoma
- Astrocytoma grading
- Asymmetrically large jugular bulb
- Atlantoaxial subluxation
- auditory tube
- Autosomal recessive polycystic kidney disease (ARPKD)
- Avascular necrosis (AVN)
- Avascular necrosis of the hip classification (FICAT)
- Avulsion fracture 5th metatarsal styloid
- Avulsion injuries
- Azygos lobe
- Azygous vein
-
B
- Baastrup syndrome
- Bamboo spine
- Banana sign
- Bankart lesion
- Barton's fracture
- Basal gangila T2 hypointensity
- Basal ganglia calcification
- Basal ganglia T1 hyperintensity
- Basal ganglia T2 hyperintensity
- Basilar artery
- Basilar artery thrombosis
- Bat's wing pulmonary opacities
- BBBBB
- Bell's palsy
- Benign CNS arteriopathy
- Benign lymphoepithelial lesions
- Benign lytic bone lesion
- Benign mixed tumour (BMT)
- Benign prostatic hypertrophy
- Benign vascular tumours
- Benign vs Malignant features on ultrasound - Stavros
- Bennett lesion
- Bennett's fracture dislocation
- Berry aneurysm
- Beta angle (DDH)
- Betz cells
- Bezoars
- Bezold's abscess
- Bicornuate uterus
- Bifid rib
- Bilateral megalencephaly
- Bilateral testicular masses
- Biliary tree
- Bill's bar
- Bizarre parosteal osteochondromatous proliferation
- Bladder calculus
- Blade of grass sign
- Blake’s pouch cyst
- Blighted ovum
- Blount’s disease
- Blow-out fracture
- Bochdalek hernia
- Boehler angle
- BOLD imaging
- Bone marrow
- Bony humeral avulsion of the glenohumeral ligament (BHAGL lesion)
- Bony ossicles
- Bosniak renal cyst classification
- Bouthillier classification of ICA segments
- Bovine arch
- Boxer's fracture
- Brain metastases
- Brain tumours
- Brain tumours in infancy
- Breast cancer staging
- Breast lesions - ultrasound
- Breast lymphoma
- Breast neoplasms
- Breast Ultrasound
- Bright rim sign
- Brodie Abscess
- Brodie's Abscess
- Bronchial atresia
- Bronchiectasis
- Bronchogenic carcinoma
- Buccinator artery
- Budd-Chiari syndrome
- Buford complex
- Bull's eye
- Butterfly glioma
-
C
- CADASIL
- Caecal volvulus
- Calcaneal tuberosity avulsion fracture
- Calcarine artery
- Calcification of the globe
- Calcifying epithelial odontogenic tumour
- Call syndrome
- Call-Fleming syndrome
- Canavan's disease
- Capillary haemangioma
- Caplan syndrome
- Cardiac blood pool scan
- Cardiac myxoma
- Carney complex
- Carney triad
- Caroticocavernous fistula
- Caroticocavernous fistula classification
- Caroticotympanic artery
- Carotid body tumour
- Carpal dislocations
- Cataract
- Caval abnormalities
- Cavernous malformation
- Cavernous sinus thrombosis
- CAVITY (mnemonic)
- Cavum septum pellucidum
- Cavum vergae
- Celery stalk sign (ACL)
- Cementoblastoma
- Central bronchiectasis
- Central giant cell granuloma
- Central nervous system - vascular anatomy
- Central neurocytoma
- Central pontine myelinolysis
- Cephalohematoma
- Cerebellopontine angle lipoma
- Cerebellopontine angle mass
- Cerebellum
- Cerebral herniation
- Cerebral metastases
- Cerebral microhaemorrhage
- Cerebral oedema
- Cerebral radiation necrosis
- Cerebral vascular malformations
- Cerebral vascular territories
- Cerebral vasospasm (post SAH)
- Cerebral venous thrombosis
- Cervical canal stenosis
- Cervical cancer staging
- Cervical ectopic
- Cervical incompetence
- Cervical intraepithelial neoplasia
- Cervical spine
- Cervical Spine - Arcuate foramina
- Cervical Spine Fractures
- Cervix
- Cervix sign of pyloric stenosis
- Charcot-Marie-Tooth disease
- CHARGE syndrome
- Chasing the dragon - Toxic leukoencephalopathy
- Chauffeur's fracture
- Chemical shift artifact
- chemodectomas
- Chemotherapy induced cholangitis
- Cherubism
- Chiari 1 malformation
- Cholangiocarcinoma
- Choledochal cyst
- Cholesteatoma
- Cholesterol granuloma
- ChOMP
- Chondrocalcinosis
- Chondromalacia grading
- Chondrosarcoma
- Chordoma
- Choristoma
- Choroid plexus tumours
- Chronic Airspace Opacities - bilateral
- Chronic Airspace Opacities - unilateral
- Chronic otomastoiditis
- Circle of Willis
- Cirrhosis
- Clavicular fracture
- Cleft sign
- Clinically isolated syndrome (CIS)
- Clival mass
- CNS lymphoma
- CNS tumours
- Coal workers' pneumoconiosis
- Coalescent mastoiditis
- Codman triangle periosteal reaction
- Coeliac artery compression syndrome
- Coeliac axis syndrome
- Coffee-bean sign
- Cognard classification of dAVF
- Colles' fracture
- Colloid cyst
- Colon cancer staging
- Colonic stricture
- Colorectal carcinoma (CRC)
- Common carotid artery
- Complex Regional Pain Syndrome
- Concha bullosa
- Congenital aortic anomalies
- Congenital cardiac abnormalities
- Congenital cholesteatoma
- Congenital Cystic Adenomatoid Malformation (CCAM)
- Congenital diaphragmatic hernia
- Congenital facial palsy
- Congenital Lobar Emphysema
- Congenital megacalycosis
- Congenital megaureter
- Congenital ossicular anomalies
- Congenital vascular anomalies
- Conoid tubercle
- Constrictive pericarditis
- Conventional Central Osteosarcoma
- Coraco-clavicular ligament injury
- Coracoclavicular joint
- Corkscrew sign
- Corpus callosum
- Cotton wool appearance of bone
- Couinaud classification
- Cowdry bodies
- CPPD
- Cranial nerve (remove)
- Cranial nerves
- Craniopharyngioma
- Craniosynostosis
- crash migraine
- Crazy paving
- CREST syndrome
- Cricopharyneal muscle spasm
- CRITOE
- Croup
- Crown rump length (CRL)
- CT Angiogram Sign
- Cyclops lesion
- Cyst with dot sign
- Cystic extratesticular masses
- Cystic fibrosis
- Cystic hygroma
- Cystic lung disease
- Cystic mediastinal masses
- Cystic meningioma
- Cystic neck nodes
- Cystic necrotic nodes
- Cystic pancreatic mass
- Cystic parotid lesions
- Cystic renal diseases
- Cytomegalovirus (CMV) encephalitis
-
D
- Dagger sign
- Dandy-Walker complex
- Dawson's fingers
- DeBakey classification
- Deep cerebral vein thrombosis
- Deep temporal branches
- Deep vein thrombosis (DVT)
- Dehiscent jugular bulb
- Delphian node
- Demyelination
- Denervation changes in muscles
- Dense middle cerebral artery sign
- Dentigerous cysts
- Dermoid cyst
- Developmental Dysplasia of the Hip (DDH)
- Developmental venous anomaly
- Deviated nasal septum
- Deviation of the azygoesophageal recess line
- Devic disease
- Diabetic osteomyelitis
- Diaphragmatic hernia
- Diencephalon
- Dilated azygos vein
- Discitis osteomyelitis of the spine
- Discoid meniscus
- Discrete colonic ulceration
- Disorganised periosteal reaction
- Dissection
- Distal clavicle erosion
- DNET
- Dolichoectasia
- Dorello's canal
- Double decidual sign
- Double line sign
- Double PCL sign
- Double wall sign
- DRIPPC
- Ductus diverticulum
- Dunbar crescent
- Dunbar syndrome
- Duodenal diverticulum
- Duodenal haematoma
- Duplex kidney
- Dural arteriovenous fistula (DAVF)
- Dural sinus occlusive disease (DSOD)
- Dural tail
- Dural venous sinus thrombosis
- Duverney fracture
- Dyke-Davidoff-Masson Syndrome
- Dysembryoplastic neuroepithelial tumour
- Dysphagia lusoria
-
E
- Early pregnancy
- ECA
- Echogenic bowel
- Ectopia lentis
- Ectopic pregnancy
- Edward's syndrome
- Eggshell calcification
- Elbow ossification centers
- Elevated hemidiaphragm DDx
- Empty delta sign
- Empty gestational sac
- en coup de sabre
- Endobronchial metastases
- Endoleak
- Endoleak types
- Endolymphatic sac tumor
- Endometrial cancer staging
- Endotension
- Endovascular aneurysm repair (EVAR)
- Enlarged posterior fossa 'CSF' space
- Eosinophilic pneumonia
- Ependymal cyst
- Ependymoma
- Epibasal thumb fracture
- Epidermoid cyst
- Epidermolysis bullosa
- Epidural lipomatosis
- Epiploic appendagitis
- Erdheim-Chester Disease
- Erlenmeyer flask deformity
- Erosion of the dens
- Erosion of the odontoid process
- Essex lopresti fracture dislocation
- Ethmoid bone
- Eustachian tube
- Eustachian tube dysfunction
- Exostosis of the ear canal (Surfer's Ear)
- Extension teardrop fracture
- Extensor mechanism of the knee injuries
- External Auditory Canal Atresia
- External carotid artery
- External ear
- External petrosal nerve
- Extradural haemorrhage
- Extramural air cell
- Eye of tiger sign
-
F
- Facet joint injection
- Facial colliculus
- Facial colliculus syndrome
- Facial nerve (CN VII)
- Facial nerve choristoma
- Facial nerve haemangioma
- Facial nerve schwannoma
- Falciform crescent
- Fallopian canal
- Fallopian tube
- False aneurysm
- Fat halo sign
- Fatty falx cerebri
- Fatty nodal metaplasia
- Feline oesophagus
- Fibrinous pericarditis
- Fibromatosis colli
- Fibromuscular dysplasia
-
F
- Fibromuscular dysplasia (FMD)
- Fibromuscular dysplasia classification
- Fibrous dysplasia
- Fibroxanthoma
- Finger-in-glove opacity
- Fischer scale
- Fishhook ureters
- Flat Waist Sign
- Focal hepatic steatosis
- Foetal death
- Foetal dosimetry
- Foetal PCOM
- Follicular cyst of the mandible
- Forceps major
- Forceps minor
- Foreign bodies
- Fossa of Rosenmüller
- Fournier's gangrene
- Fracture Patella
- Fragile X tremor-ataxia syndrome (FXTAS)
- Frontotemporal lobar degeneration (FTLD)
- Fruit inspired signs
- Funnel trachea
-
G
- Galassi classification of arachnoid cysts
- Galeazzi fracture dislocation
- Gallstone ileus
- Gamekeeper's thumb
- Ganglioglioma
- Garden classification (hip fractures)
- Gardner syndrome
- Garland triad
- Garland's triad
- Gas in the urinary bladder
- Gastric lymphoma
- Gastrointestinal string sign
- Gaucher’s disease
- Gelatinous transformation
- Geniculate ganglion
- Germinoma
- Germinoma (CNS)
- Gerstmann syndrome
- Gestational sac
- Gestational trophoblastic disease
- Giant cell tumour of bone
- Glenolabral articular disruption (GLAD lesion)
- Glioblastoma Multiforme
- Glioblastoma multiforme (GBM)
- Gliomatosis cerebri
- Glomangioma (glomus tumour)
- Gluteal injection site granulomas
- Golden S sign
- Gonadal vein
- Gout
- Gradenigo syndrome
- Greater sciatic foramen
- Greater sciatic notch
- Greater superfical petrosal nerve
- Grey matter heterotopias
- Griesinger's sign
- Grisel's syndrome
- Groove for popliteus tendon
- Ground-glass opacity
- Growing teratoma syndrome
- Grynfeltt-Lesshaft hernia
-
H
- H-shaped vertebrae
- Haemangioblastoma
- Haemangioendothelioma
- Haemangioendothelioma (MSK)
- Haemangioma
- Haemangiopericytoma (MSK)
- Haemochromatosis
- Haemorrhagic metastases
- Haglund's syndrome
- Haller cells
- Hallervorden-Spatz syndrome
- Hamburger sign
- Hangman's fracture
- Head cheese sign
- Healed varicella pneumonia
- Heart and Great vessels
- Heerfordt syndrome
- Hemangiopericytoma
- Hemangiopericytoma (CNS)
- Hemifacial spasm
- Hemimegalencephaly
- Hemithorax white-out
- Hepatic adenoma
- Hepatic alveolar echinococcosis (HAE)
- Hepatic hydatid infection
- Hepatic veno-occlusive disease
- Hepatocellular carcinoma
- Hereditary haemorrhagic telangiectasia
- Hereditary multiple exostoses
- HHH therapy
- Hiatus Hernia
- High riding jugular bulb
- Hilgenreiner's line
- Hill Sach's deformity
- Hinchey Classification of Acute Diverticulitis
- Hippocampus
- Hirschsprung Disease
- Hodgkin disease
- Hodgkin's lymphoma staging (Ann Arbor)
- Hoffman-Rigler sign
- HOGWASH
- Holoprosencephaly
- Honeycombing
- Horseshoe kidney
- HSV encephalitis
- Humeral avulsion of the glenohumeral ligament (HAGL lesion)
- Hunt and Hess grading system
- Huntington's disease
- Hyaline Membrane Disease
- Hydatid disease
- Hydrocolpos
- Hydrometrocolpos
- Hydromyelia
- Hyper-reninaemic hypertension - DDx
- Hyperostosis frontalis interna
- Hyperostosis fronto-parietalis
- Hyperostosis of the skull
- Hyperparathyroidism
- Hypertension
- Hypertrophic olivary degeneration
- Hypertrophic osteoarthropathy
- Hypervascular liver lesions
- Hypoglossal Artery
- Hypoglossal canal
- Hypoglossal nerve (CN XII)
- Hypothalamic hamartoma
- Hypothalamic lesions
- Hypothalamic-optochiasmatic glioma
- Hypothalamus
- Hypothenar hammer syndrome
-
I
- I Love Going To Makeover Parties
- I'M SLOW
- ICA
- Idiopathic interstitial pneumonias
- Idiopathic Transient Osteoporosis of the Hip (ITOH)
- Inanimate object inspired signs
- Incisional hernia
- Increased size of the globe (eye)
- Incus
- Indirect inguinal hernia
- Indusium griseum
- Ineffective spondylitis
- Infantile polycystic kidney disease
- Infective or inflammatory vascular conditions
- inferior anastomotic vein
- inferior capsular arterial rete
- Inferior hypophyseal arterial circle
- Inferior nasal concha
- Inferolateral trunk
- Inflammatory abdominal aortic aneurysm
- Infraorbital artery
- Infraorbital ethmoidal air cells
- Infraorbital ethmoidal air cells
- Insall-Salvati ratio
- Installing MIRC on a Linux Server
- Insufficiency fracture
- Internal acoustic meatus
- Internal acoustic meatus (IAM)
- Internal auditory meatus
- Internal carotid artery
- Internal epicondyle fracture
- Internal maxillary artery
- Internal spermatic vein
- Interstitial ectopic pregnancy
- Interstitial line sign
- Intervertebral disc calcification
- Intestinal ascariasis
- Intestinal ischemia
- Intestinal lipoma
- Intraarticular loose bodies
- Intracranial arteries
- Intracranial arteries - variants
- Intracranial haemorrhage
- Intracranial hypotension
- Intracranial infections
- Intracranial lipoma
- Intracranial metastasis
- Intracranial metastatic melanoma
- Intracranial teratoma
- Intraductal papillary mucinous neoplasms (IPMN)
- Intraosseous Ganglion
- Intrauterine device (IUD)
- Intraventricular meningioma
- Intraventricular neoplasms
- Intraventricular tumours
- Intussusception
- Inverted Napoleon hat sign
- Iodophenylundecylic acid
- Ischaemic Colitis
-
J
-
K
-
L
- Labral variants
- Labyrinth of ethmoid
- Labyrinthine artery
- Labyrinthitis
- Langerhan’s cell histiocytosis
- Large bowel
- Large for date foetus
- Laryngeal SCC staging
- Laryngocoele
- Larynx
- Lateral lenticulostriate arteries
- Lateral posterior choroidal artery
- Lazy French Tarts Sit Nakedly In Anticipation
- Le Fort Fracture Classification
- Lead Poisoning
- Left sided SVC
- Legg-Calvé-Perthes disease
- Leigh syndrome
- Lemierre's syndrome
- Lemon sign
- Lentiform nodule
- Leptomeningeal carcinomatosis
- Leptomeningitis
- Leriche syndrome
- Lesser petrosal nerve
- Leukocoria
- leukokoria
- Lhermitte-Duclos disease
- Limbus fracture types
- Limbus vertebra
- Linear scleroderma
- Linguine sign
- Lipohaemarthrosis of the knee
- Lipoma of the filum terminale
- Lipomatous enlargement of the interatrial septum
- Liposarcoma
- Lisfranc injury
- Lissencephaly
- Lithopaedion
- Liver anatomy
- Liver trauma grade
- Liver, vascular conditions
- Long central artery
- Long head of biceps tendinopathy
- Long head of biceps tendon dislocation
- Lou Gehrig disease
- Low signal endplate on T1WI
- Lower Extremity Fractures
- Lower gastrointestinal bleeding DDx
- Lower lobe bronchiectasis
- Lumbar disc disease
- Lung abscess
- Lung cancer staging
- Lung hernia
- Lungs
- Lymph node enlargement
- Lymphangioma
- Lymphangitis carcinomatosis
- Lymphocytic adenohypophysitis
- Lynch syndrome
- Lynph node levels of the neck
- Lytic lesions of the jaw
-
M
- Macewen's triangle
- Maduromycosis
- Maffucci syndrome
- Magic angle
- MAGIC DR
- Malignant melanoma
- Malignant vascular tumours
- Malleus
- Mallory bodies
- Malrotation
- Mammography
- Mandibular lesions
- Masseteric artery
- Mastitis
- Maxillary artery
- May-Thurner Syndrome
- MCA
- MCA infarct
- McDonald Diagnostic Criteria for MS
- Mean sac diameter (MSD)
- Meconium peritonitis
- Medial lenticulostriate arteries
- Medial posterior choroidal arteries
- Medial posterior choroidal artery
- Median arcuate ligament syndrome
- Medullary sponge kidney (MSK)
- Mega cisterna magna
- Megalencephaly
- MELAS
- Melkersson-Rosenthal syndrome
- Melkersson-Rosenthal_syndrome
- MELT
- MEN I
- MEN II
- MEN IIa
- MEN IIb
- Meninges
- Meningioangiomatosis
- Meningioma
- Meningitis
- Meningocele
- Meningohypophyseal trunk
- Meninx primitiva
- Meniscal flounce
- Mental artery
- Mercedes-Benz sign
- Mesenteric panniculitis
- Mesial temporal sclerosis
- Metacarpal index
- Metacarpal sign
- Metastases to breast
- Metastasis - Vertebral
- Methyl methacrylate cranial prosthesis
- Meyer loop
- Middle cerebral artery
- Middle ear effusion
- Middle ear granulation tissue
- Middle ear tumours
- Middle lobe bronchiectasis
- Middle nasal concha
- Midgut volvulus
- Migraine
- Migranous vasospasm
- Miliary opacities
- Milwaukee shoulder
- MIRC
- Miscarriage
- MISME
- Mitochondrial disorders
- Mitral annular calcification
- Mixed vascular malformation
- Monckeberg medial calcific sclerosis
- Monod's sign
- Monteggia fracture dislocation
- Mosaic pattern bone
- Moya moya
- Moya moya staging (Susuki)
- MR CT BB
- MR Spectroscopy (MRS)
- MRI arthrogram solution
- Mucoepidermoid carcinoma
- Mulitlocular cystic nephroma (MLCN)
- Multi cystic dysplastic kidney (MCDK)
- Multicentric riticulohistiocytosis
- Multicystic dysplastic kidney(MCDK)
- Multicystic lung disease
- Multifoetal pregnancy
- Multilayered periosteal reaction
- Multiple endocrine neoplasia syndromes
- Multiple sclerosis (MS)
- Muscles of mastication
- Muscles of the tongue
- Musculoskeletal
- Mycotic aneurysm
- Myelitis
- Myoepithelioma
- Myokymia
- Möbius syndrome
-
N
- Naegele's formula
- Nail-patella syndrome
- Nasal concha
- Nasal epidermoid
- Nasopharyngeal choristoma
- Neoplasms of the Spinal Cord and Filum Terminale
- Nephrocalcinosis
- Nephrogenic systemic fibrosis
- Nephrolithiasis
- Nephronophthosis - medullary cystic disease complex
- Nerve to stapedius
- Neuroblastoma
- Neurocysticercosis
- Neurofibromatosis type 1
- Neurofibromatosis type 2
- Neurogenic bladder
- NF2
- Nipple retraction
- Nodular filling defects of duodenum
- Non-ossifying fibroma
- Nonseminomatous germ cell tumour
- Normal facial nerve enhancement on MRI
- Normal vascular anatomy
- Notch sign
- Notochord
- Nottingham classification
- Nuchal lucency
- Nuchal thickness
- Nutcracker syndrome
- Nutmeg liver
-
O
- O'Donoghue's unhappy triad
- Obstructive hydrocephalus
- Occipital artery
- Oculomotor nerve (CN III)
- Oculomotor nerve palsy
- Odontogenic keratocyst
- Odontogenic myxoma
- Odontoma
- Oesophageal cancer
- Oesophageal cancer staging
- Oesophageal stricture
- Oesophageal web
- Oesophagus
- Olfactory nerve (CN I)
- Oligoastrocytoma
- Oligodendroglioma
- Oligohydramnios
- Omental cake
- Omphalocoele
- Onodi cells
- Open ring sign
- Ophthalmic artery
- Optic nerve (CN II)
- Orbit
- Orbital mass - superolateral quadrant - extraconal
- Orbital pseudotumour
- Orbital venous varix (OVV)
- Os acromiale
- Os odontoideum
- Os Supratalare
- Os tibiale externum
- Osgood-Schlatter disease
- Osler-Weber-Rendu syndrome
- Ossicles
- Ossification of the posterior longitudinal ligament (OPLL)
- Ossifying Fibroma
- Osteitis condensans ilii
- Osteitis pubis
- Osteoarthritis
- Osteochondral Defect
- Osteochondral injury staging
- Osteochondritis dissecans
- Osteochondritis dissecans of the knee
- Osteochondroma
- Osteogenesis Imperfecta
- Osteoid
- Osteoid osteoma
- Osteoma
- Ostmann's fat pad
- Otom cat
- Otomastoiditis
- Ovarian Cysts
- Ovarian dermoid
- Ovaries
-
P
- Pacchionian bodies
- Paediatric cystic renal diseases
- Paediatric renal tumours and masses
- Page kidney
- Paget's disease of bone
- Paget-Schroetter syndrome
- Paget’s disease
- Pancoast syndrome
- Pancoast tumours
- Pancreatic duct
- Pancreatic neoplasms
- Pancreatoblastoma
- Panda sign
- Panner's disease
- Papillary cystic neoplasm of the pancreas
- Papillary thyroid cancer
- Papilloedema
- Papillomatosis
- Paraganglioma
- Parosteal osteosarcoma
- Parsonage Turner syndrome
- Patau's syndrome
- Patellar tendon rupture
- Patulous tube syndrome
- PCA infarct
- PCOS
- Pear-shaped bladder
- Pectus excavatum
- Pedunculated Intratrcheal Mass
- Peg like tonsils
- Pelvic Masses (female)
- Pelvis
- Penumbra sign
- Periapical cyst
- Pericallosal artery
- Pericallosal moustache
- Pericardial calcifications
- Pericardial cyst
- perimesencephalic haemorrhage
- Periosteal reaction
- Peripheral bone metastases
- Peritoneal calcification
- Perivascular space
- Perkin's line
- Persistent carotid-vertebrobasilar anastomoses
- Persistent hypoglossal artery
- Persistent ossiculum terminale
- Persistent otic artery
- Persistent primitive trigeminal artery
- Persistent proatalantal intersegmental artery
- Petrous apicitis
- PHACE syndrome
- Phase mismapping
- Phrenic nerve palsy
- Phrygian cap
- Phthisis bulbi
- Phyllodes
- Pigmented villonodular synovitis (PVNS)
- Pilocytic astrocytoma
- Pine-cone bladder
- Pineal cyst
- Pineal mass
- Pineoblastoma
- Pineocytoma
- Piriformis muscle
- Piriformis syndrome
- Pitt's pit
- Pituicytoma
- Pituitary apoplexy
- Pituitary gland
- Pituitary stalk
- Pituitary stalk abnormal enhancement
- PLASTIC RAGS
- Platybasia
- Pleomorphic adenoma
- Pleomorphic xanthoastrocytoma (PXA)
- Pleural mouse
- Pneumatised dorsum sella
- Pneumobilia
- Pneumocystis carinii pneumonia
- Pneumomediastinum
- Pneumothorax and tension pneumothorax
- Pneumothorax in supine patient
- Polycystic Ovaries
- Polyglandular syndromes
- Polyhydramnios
- Polymicrogyria
- Polyposis syndromes
- Popliteal artery aneurysm
- Popliteal Tendon Groove
- Portal hypertension
- Portal hypertensive gastropathy/enteropathy/colopathy
- Portal venous gas
- Portal-systemic collateral pathways
- POSTCARD
- Posterior cerebral artery (PCA)
- Posterior choroidal artery
- Posterior choroidal artery (lateral)
- posterior choroidal artery (medial)
- Posterior choroidal artery stroke
- posterior forceps
- Posterior fossa tumour
- Posterior inferior cerebellar artery (PICA)
- Posterior reversible encephalopathy syndrome (PRES)
- Posterior trunk (ICA)
- Posterior vertebral scalloping
- Posterosuperior impingement
- Postpartum angiopathy
- Pott's puffy tumour
- Pregnancy related AVN
- Primary progressive aphasia
- Primordial cyst of the mandible
- Prion diseases
- Proatlantal artery
- Proatlantal intersegmental artery
- Probst bundles
- Progressive supranuclear palsy (PSP)
- Prostate cancer staging
- Protatlantal artery Type II
- Proximal femoral fracture
- Prune belly syndrome
- Psammoma bodies
- Pseudoaneurysm
- Pseudocysts of the germinal matrix
- Pseudogestational sac