Renal Ultrasonography – To Detect Renal Calculi

Renal Ultrasonography is an important imaging technology that helps in the detection of renal calculi. The ultrasonography has superior sensitivity as compared to abdominal films that helps in the detection of renal calculi by their marked echogenicity and associated acoustic shadowing.

This imaging technique offers anatomical details without exposure to radiation or contrast material. This screening tool helps in the demonstration of renal stones and evaluation of hydronephrosis in patients with suspected renal calculi. The renal calculi, as small as 3 mm can be detected by using transducers in the range of 6 to 10 Megahertz. Renal Ultrasonography is especially useful where intravenous contrast or radiation is contraindicated. Bilateral renal obstruction that may lead to acute renal failure can be excluded using this technique. The protection of the renal calculus is based on the presence a of highly echogenic focus with posterior acoustic shadowing of the stone.

Doppler Renal Ultrasonography plays a pivotal role in the evaluation of renal trauma and can prevent renal vein thrombosis. Its primary role is to identify unilateral hydronephrosis in patients with suspected renal colic.

Various Applications Of This Imaging Technique Are As Given Below:

  • Determination of the size, shape and position of the kidneys, their internal structure and tissues near them
  • Evaluate and determination of the location of urinary obstruction and abnormal accumulation of fluid
  • Assessment and diagnosis of complications that may arise after kidney transplant
Renal ultrasound is considered to be an important technique that visualizes the presence of kidney stones, renal blockages, cysts and tumours. This technique gives invaluable information as to why possible symptoms exist and kidney functions.



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