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16-MDCT Angiography in Living Kidney Donors at Various Tube Potentials: Impact on Image Quality and Radiation Dose

Dushyant V. Sahani1, Sanjeeva P. Kalva1, Peter F. Hahn1 and Sanjay Saini1

1 All authors: Department of Radiology, Massachusetts General Hospital, 55 Fruit St., Boston, MA 02114-2696.


Figure 1
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  		Fig. 1A —CT angiography in 46-year-old male donor (weight = 162 lb [73 kg], 100 kVp). Representative axial image (A) at level of renal artery origins and corresponding coronal maximum-intensity-projection (MIP) image (B) are shown. Axial image quality was rated as 3 (diagnostically acceptable) and MIP image quality, as 4 (good). Two accessory renal arteries were identified on right (arrows, B) and single renal artery on left. Left kidney was selected for transplantation and single artery was confirmed at surgery.

 

Figure 2
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  		Fig. 1B —CT angiography in 46-year-old male donor (weight = 162 lb [73 kg], 100 kVp). Representative axial image (A) at level of renal artery origins and corresponding coronal maximum-intensity-projection (MIP) image (B) are shown. Axial image quality was rated as 3 (diagnostically acceptable) and MIP image quality, as 4 (good). Two accessory renal arteries were identified on right (arrows, B) and single renal artery on left. Left kidney was selected for transplantation and single artery was confirmed at surgery.

 

Figure 3
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  		Fig. 2A —CT angiography of renal vessels in 53-year-old female donor (weight = 152 lb [68 kg], 120 kVp). Axial image (A) was rated as 4 (good) and corresponding coronal maximum-intensity-projection (MIP) image (B) was rated as 5 (excellent). Accessory renal artery was identified on both sides (arrows, B). Patient underwent left nephrectomy and these imaging findings were confirmed during surgery.

 

Figure 4
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  		Fig. 2B —CT angiography of renal vessels in 53-year-old female donor (weight = 152 lb [68 kg], 120 kVp). Axial image (A) was rated as 4 (good) and corresponding coronal maximum-intensity-projection (MIP) image (B) was rated as 5 (excellent). Accessory renal artery was identified on both sides (arrows, B). Patient underwent left nephrectomy and these imaging findings were confirmed during surgery.

 

Figure 5
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  		Fig. 3A —CT angiography in 34-year-old male kidney donor (weight = 174 lb [78 kg], 140 kVp). Axial image (A) and coronal maximum-intensity-projection (MIP) image (B) are shown. Axial image quality was rated as 4 (good), and MIP image quality was rated as 5 (excellent). On MIP image, right accessory renal artery is marked with arrow.

 

Figure 6
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  		Fig. 3B —CT angiography in 34-year-old male kidney donor (weight = 174 lb [78 kg], 140 kVp). Axial image (A) and coronal maximum-intensity-projection (MIP) image (B) are shown. Axial image quality was rated as 4 (good), and MIP image quality was rated as 5 (excellent). On MIP image, right accessory renal artery is marked with arrow.

 

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