High-Pitch Dual-Source Computed Tomography Renal Angiography Comparison With Conventional Low-Pitch Computed
LiFang Pang1, Yue Zhao, HaiPeng Dong
1From the *Department of Radiology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine; †Department of Nuclear Medicine, Zhongshan Hospital Affiliated to Fudan University; and ‡Healthcare Sector, Siemens Ltd, Shanghai, China.
Objective:
The objective of this study was to compare the image quality (IQ), contrast medium (CM) volume, and radiation dose of the high-pitch renal computed tomography angiography (CTA) with low-pitch protocol.
Methods:
Fifty patients underwent renal CTA on a dual-source 128-slice scanner via a high-pitch mode (pitch = 2.05) with 0.5-mL/kg CM injection, whereas 50 patients were also scanned on the same scanner with low-pitch (pitch = 0.6) and 1.0 mL/kg CM injection. Subjective IQ was evaluated. Objective IQ was determined by the signal-to-noise ratio and contrast-to-noise ratio. Effective radiation dose was also evaluated.
Results:
The contrast-to-noise ratio and signal-to-noise ratio values as well as the IQ scores between the 2 groups had no significant differences (P > 0.05). The effective radiation dose of the high-pitch group was significantly lower (P < 0.05).
Conclusions:
High-pitch scan can provide similar subjective and objective IQ compared with low-pitch protocol for renal CTA, whereas CM volume and radiation exposure were significantly reduced.
More Related Videos
09:49Dual-phase Cone-beam Computed Tomography to See, Reach, and Treat Hepatocellular Carcinoma during Drug-eluting Beads Transarterial Chemo-embolization
Published on: December 2, 2013
06:02Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens
Published on: April 18, 2013
Related Concept Videos
Imaging Studies III: Computed Tomography
Computed Tomography
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imaging Studies for Cardiovascular System V: CT
Imaging Studies VII: Vascular Imaging
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies II: Ultrasonography
