Magnetic resonance imaging (MRI) is useful in the presence of atypical symptoms or in the setting of a normal ultrasound in a highly suspected patient.

• Magnetic resonance venography with 100% sensitivity and 97% specificity is one of the most accurate non-invasive diagnostic tools for Paget-Schroetter disease.^[1]
• MR venography is capable of detecting thrombus in the venous system.^[2]

• MR venography has some disadvantages which may limit its usage. Such as :
  • Limited availability^[3]
  • High price

• Magnetic resonance imaging (MRI) is helpful to confirm or exclude the diagnosis when Paget-Schroetter disease is highly suspected, but there are no abnormal ultrasound findings. This imaging method could also be used to study other possible etiologies of Subclavian–Axillary vein compression.^[4]
• MR angiography is an accurate diagnostic tool capable of :
  • Detecting Axillary–Subclavian vein occlusion
  • Point stenosis of Axillary–Subclavian vein at level of the first rib^[5]
  • Determining the presence of dilated collateral veins (could be helpful to determine thrombus chronicity)^[6]
  • Positional Subclavian vein obstruction (performed at rest with elevated upper limb)^[7]