Digital Subtraction Angiography

The newly installed "Digital Subtraction Angiography (DSA)" machine allows visualization of blood vessels in human body without artifacts and bony structures blocking the way-they have all been "digitally subtracted" out of the background.

Our DSA machine is installed with a 40 cm square detector – one of the largest in its class.  The larger detector means increased anatomical coverage allowing optimal performance of a wider range of angiographic procedures.

The machine is also a powerful armament to enable interventional radiologists to perform minimally invasive vascular and non vascular intervention procedures. Compared with open surgery, there is no large incisions and blood loss. Successfully treated cases would often save patients major surgical resection and morbidity.

Clinical Use of Digital Subtraction Angiography

Diagnostic procedures:

  • Evaluation of vascular function
  • Identification of bleeding site
  • Diagnose lesions in the arteries

Interventional procedures:

  • For treatment of peripheral vascular diseases, such as Angioplasty or stenting
  • To dissolve blood clots in patients suffering from strokes or other thromboembolic diseases
  • Uterine fibroids embolisation
  • For targeted treatment of cancer with drugs and clot-inducing substances delivered directly into the tumor's feeding artery.
  • Hemostasis
  • Percutaneous nephrostomy
    (both for drainage and for establishment of tract for percutaneous nephrolithotomy)
  • Perctaneous transhepatic biliary drainage (PTBD)
  • Antegrade ureteric stenting, oesophageal stenting and colonic stenting