Type of CT Scan used to characterise the chemical composition of kidney stones?: (A) Spiral CT, (B) Multidetector CT, (C) Dual source CT, (D) HRCT
Answer is C. Dual source CT uses two different x-ray sources with different Kvp and based on the interaction with different elements can characterize the type of kidney stones. Clinical dual-energy applications include: Characterization of abdominal masses, Chemical composition of renal calculi, Myocardial and pulmonary perfusion imaging.