Imaging Collection: One sentence makes it easy for you to learn imaging diagnosis

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Blue tympanic membrane: The normal tympanic membrane is an oval translucent membrane.

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X-ray:

Week 1: "Bloat": shows swelling of soft tissue, blurred and thickened subcutaneous fat layer;

Week 2: "Broken": bone destruction and changes; I won't go into details, it's in the book;

Week 3: "Tsubaki-Periosteal Reaction": Periosteal hyperplasia appears;

2 months or so: "Sequestrum": Sequestrum appears
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This is also the evolution of acute osteomyelitis
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The X-ray characteristics of chronic osteomyelitis (long bones) are: two broad and two exist
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Extensive bone hyperplasia and sclerosis, extensive periosteal hyperplasia and sclerosis;
sequestrum exists, dead space exists
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Diagnosis of pulmonary embolism : The tip of the consolidation shadow points to the hilum of the lung, and a small cavity can be seen in it, and the small cavity is close to the pleura
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Plus the symptoms of coughing up blood
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The diagnosis is clear

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Osteomegaly occurs at the end of the metaphyseal healed bone, and chondromatosis occurs at the unhealed epiphyseal area of ​​the metaphysis
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Bone destruction of the spine: tuberculosis is mainly vertebral body, and the metastasis is mainly attachment

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Going up and going down quickly is HCC, leaving early and returning late is hepatic hemangioma

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Double room shadow on the right edge of the heart, four-arc sign on the left edge, mitral valve stenosis in rheumatic heart disease

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Small bladder, urinary tract tuberculosis

Image symptom analysis:

optic nerve orbit sign - optic nerve sheath meningioma

Tail sign, white matter collapse sign - meningioma

Fruit hanging sign - multiple liver metastases

Silhouette sign, air bronchus sign—inflammation in the lungs

scabbard-like trachea - chronic obstructive pulmonary disease

Bronchial double track sign - COPD, bronchiectasis

Impression sign, curly hair sign - bronchiectasis

Lobulation sign, burr sign, crab foot sign, rabbit ear sign, vacuole sign, halo sign, posterior wall cavity sign - lung cancer

Triple Obstruction (obstructive pneumonia, obstructive atelectasis, obstructive emphysema) - central lung cancer

Inflammation sign, dry branch sign, vascular enhancement sign - bronchioloalveolar sign

Crescent sign, ball sign, halo sign - fungal infection in the lungs

Sail sign - normal thymus in children

Horizontal S sign (reverse S sign) - lung cancer

Interface sign (bronchial cuff sign) - simple lesion (interstitial pulmonary edema)

Tree in bud sign - bronchiolitis, bronchial dissemination of tuberculosis

Ground glass sign - early peripheral lung cancer, bronchioloalveolar carcinoma

Paving road sign - alveolar microlithiasis sign

Tempest sign - pulmonary fat embolism

Double-barreled sign - occupying the head of the pancreas

Dumbbell Sign - Paravertebral Neurogenic Tumors

Bird's beak sign, carrot sign - achalasia

Adnexal laminar flow sign - endometriosis sign (chocolate cyst)

Twisted fossa sign, rope hold sign - volvulus

Concentric circle sign, beak sign - intussusception

cobblestone sign - intestinal lymphoma

Pen sign - multiple small polyps in the intestine