Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for the ‘bone’ Category

Blount’s disease

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  • tibia vara, causes genu varum.
  • metaphyseal-diaphyseal angle >11 degrees
  • bilateral ~infantile type
  • pain in adolescent
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Written by lmwong

May 8, 2012 at 8:41 am

Posted in bone, msk, pediatrics

Red Marrow

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  • more water content, bright on T2
  • amorphous and feathery, flame shaped
  • metaphyseal and metadiaphyseal
  • smoking and obesity, middle aged females

Written by lmwong

July 12, 2011 at 7:32 am

Posted in bone, mri, msk

MRI Ankle Checklist

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Written by lmwong

December 16, 2010 at 10:00 am

Posted in bone, checklist, msk

MRI Shoulder Checklist

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Written by lmwong

December 16, 2010 at 9:59 am

Posted in bone, checklist, msk

MRI Knee Checklist

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Extensor mechanism:

  • patellar cartilage (axial T2 SPIR, sag PD)
  • femoral trochlear cartilage (axial T2 SPIR, sag PD)
  • patellar tendon / quad tendon (sag PD)
  • effusion, meniscal and synovial cysts (T2W sequences)
  • meniscii (PD sequences)

Ligaments:

  • ACL – (ax T2 SPIR, sag PD, sag T2 SPIR)
  • PCL – (ax T2 SPIR, sag PD, sag T2 SPIR)
  • MCL, LCL – (coronal PD)

Lateral Compartment:

  • Femoral Condylar Cartilage (sag and coronal PD and sag T2)
  • Lateral Meniscus – (coronal PD and sag T2 SPIR)

Medial Compartment:

  • Femoral Condylar Cartilage (sag and coronal PD and sag T2)
  • Medial Meniscus – (coronal PD and sag T2 SPIR)

Other:

  • Baker’s cyst (Ax T2 SPIR)
  • Knee effusion (sag T2 SPIR)
  • Prepatellar edema

Taken from: RadDaily.com

See dictation

Written by lmwong

December 16, 2010 at 9:38 am

Posted in bone, checklist, msk

Bankart and Bankart variant lesion

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Classification of Bankart and Bankart variant lesions. a Bankart lesion, b bony Bankart lesion, c Perthes lesion, d ALPSA (anterior labro-ligamentous periosteal sleeveavulsion) lesion, e GLAD (glenolabral articular disruption) lesion, f HAGL (humeralavulsion of glenohumeral ligaments) lesion. (LLC anteroinferior labro-ligamentous complex, P scapular periosteum, HH humeral head, AC articular cartilage of glenoid,IGHL inferior glenohumeral ligament)

Written by lmwong

December 12, 2010 at 10:33 am

Lytic Bone Lesions Based on Margin

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Geographic IA: (well defined, geographic, sclerotic)

  • bone cyst
  • brodie abscess
  • cartilage lesions (chondroblastoma, chondromyxoid fibroma, enchondroma)
  • fibroxanthoma
  • fibrous dysplasia

Geographic IB: (no sclerosis)

  • giant cell tumor
  • myeloma/mets
  • bone cyst
  • cartilage lesions

Geographic 1C: (ill-define border, single focal lesion)

  • chondrosarcoma
  • enchondroma
  • MFH/ibrosarcoma
  • Giant cell tumor/ABC/CMF
  • Osteosarcoma
  • Mets/myeloma

Permeative/Motheaten:

  • Ewing sarcoma
  • round cell tumors
  • malignant fibrous histiocytoma/fibrosarcoma
  • osteomyelitis
  • osteosarcoma
  • Langerhans cell histiocytosis
  • mets/myeloma

Written by lmwong

May 1, 2010 at 9:10 am

Posted in bone, differential, lytic, msk