Lymph node imaging

Lymph node imaging has become an important task for the radiologist in present days where it helps the surgeon or physician to differentiate them from benign and malignant nodes . Multiple modalities have been developed for the assessment and characterization of lymph nodes .Each modality has its own advantages and disadvantages .

Modalities

Ultrasound

  • size 
  • number
  • shape
  • echotexture
  • vascularity
  • contour
  • hilum
  • calcification
  • long to short axis ratio
CT

  • size 
  • shape
  • number
  • attenuation characteristics
  • enhancement with contrast
MRI
Diffusion weighted imaging
Contrast MRI 

  • enhancement kinetics 
  • flow kinetics
  • blood volume
  • microvascular permeability
MR spectroscopy

  • another adjunct technique for characterization is spectroscopy 
  • elevated choline levels have been associated with metastastatic lymph nodes and even further studies are being evaluated for other metabolites in metastatic nodes.
USPIO imaging on MR

  • it is a promising technique for lymphnode evaluation with usage of ultra small superparamagnetic iron oxide particles .
  • several patterns of uptake have been defined which are helpful in characterisation of lymphnodes
Interstitial administration of lymphangiographic contrast with MRI

  • a different approach which helps in visualisation of lymphatic system on MRI
  • helps in identification of sentinel nodes and draining lymphatics course
PET

  • has gained importance in recent days in identifying small nodal metastases
  • 18F -FDG has been used which is avidly taken up by malignant cells with high rate of glycolysis
Share article

Article information

rID: 25896
Synonyms or Alternate Spellings:
  • imaging of lymph nodes

Support Radiopaedia and see fewer ads

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.