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Figure 5: Iterative reconstruction techniques in computed tomography (CT) for urolithiasis. Iterative reconstruction (IR) techniques reduce image noise and allow acquisition of CT scans with low radiation dose, preserving diagnostic accuracy. Coronal images from a patient with medullary sponge kidney acquired in different dates. (a) Image reconstructed with Filter back projection (CTDIvol: 11.45 mGy) and (b) image reconstructed with an IR technique (adaptive statistical iterative reconstruction 60%) (CTDIvol: 7.01 mGy). Note the decreased image noise, preserved image quality and visualization of the calculi in the image obtained with the IR technique compared that obtained with Filtered Back Projection (FBP). Also note the radiation dose reduction obtained using the IR technique and different image texture on the images obtained with the IR technique

Figure 5: Iterative reconstruction techniques in computed tomography (CT) for urolithiasis. Iterative reconstruction (IR) techniques reduce image noise and allow acquisition of CT scans with low radiation dose, preserving diagnostic accuracy. Coronal images from a patient with medullary sponge kidney acquired in different dates. (a) Image reconstructed with Filter back projection (CTDIvol: 11.45 mGy) and (b) image reconstructed with an IR technique (adaptive statistical iterative reconstruction 60%) (CTDIvol: 7.01 mGy). Note the decreased image noise, preserved image quality and visualization of the calculi in the image obtained with the IR technique compared that obtained with Filtered Back Projection (FBP). Also note the radiation dose reduction obtained using the IR technique and different image texture on the images obtained with the IR technique