Automatic Selection of Tube Potential for Radiation Dose Reduction in Vascular and Contrast-Enhanced Abdominopelvic CT

Abstract

Automatic tube potential selection provides an efficient and quantitativeway to guide the selection of the optimal tube potential for CTA and abdominopelvic CT examinations.

100 kVp Low-Tube Voltage Abdominal CT in Adults: Radiation Dose Reduction and Image Quality Comparison of 120 kVp Abdominal CT

“…The mean CT number of each organ and background image noise were higher at 100 kVp, in agreement with reports of other studies (10,11,19). According to the SNR equation, SNR is inversely related to background noise.…”

“…With this advanced technique, a clear trend towards the use of lower tube voltage CT scans for the brain, heart, chest, and body has been observed in recent years (11)(12)(13)(14). In accordance with reduced streaming radiation dose, a low tube voltage of 100 kVp is routinely selected for abdominal CT application of recent state-of-the-art multidetector row CT scanners (10,18,22,23).…”

“…With the advances in ATCM, recent CT scanner can automatically select tube voltage depending on the patients' attenuation profile from CT topogram, thus enabling us to lower tube voltage from 120 kVp to 100 kVp or even 80 kVp (10). 100 kVp chest, pulmonary, or head CT angiographies has been proven to be useful for diagnostic purposes (11)(12)(13)(14).…”

Imaging the Parasinus Region with a Third-Generation Dual-Source CT and the Effect of Tin Filtration on Image Quality and Radiation Dose

“…13,14 The dose-reduction potential is highest in CT angiography because of the high vascular attenuation. [15][16][17][18] In nonenhanced CT, there is less potential of dose reduction by using low-kilovolt protocols, though the CT numbers of bone increase with decreasing kilovolt settings and the higher image noise in low kilovolts is a limiting factor. We demonstrated that the Sn100-kV protocol provided superior image quality compared with 70-to 90-kV protocols at equivalent dose levels.…”

Image quality and radiation dose of brain computed tomography in children: effects of decreasing tube voltage from 120 kVp to 80 kVp

“…The marked increase in CT utilization during the last two decades has generated public concern regarding the potential cancer risks associated with the radiation exposure resulting from CT [1][2][3]. CT represents up to 17% of the radiologic departmental workload, while it accounts for 70-75% of the collective dose derived from medical radiation [4].…”