Low kV settings CT angiography (CTA) with low dose contrast medium volume protocol in the assessment of thoracic and abdominal aorta disease: a feasibility study

Ippolito, Davide; Franzesi, Cammillo Talei; Fior, Davide; Bonaffini, Pietro Andrea; Minutolo, O; Sironi, Sandro

doi:10.1259/bjr.20140140

Cited by 67 publications

(35 citation statements)

References 22 publications

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“…Regarding the DLP, the median value of our study was more or less comparable to Cornea et al [9] and Ippolito et al [6] and higher than Zhang et al [7], Manheimer et al [10] and Beeres et al [8]. Christensen et al [5] 32x0.6 120 2.4 13.9 -Zhang et al [7] 64x0.6 100 1.2 5.6 191.3 Cornea et al [9] 64x0.625 100 1.375 -648.71 Manheimer et al [10] 64x0.625 120 --325.6 Beeres et al [8] 128x0.6 100 3.0 3.70 273.0 Ippolito et al [6] 128x0 Figure 1. The distribution of DLP values from chest CTA examinations using a 16-slice system.…”

Section: Resultssupporting

confidence: 89%

“…The median value of CTDI vol from our study was comparable to Christensen et al [5] and Ippolito et al [6] and higher than Zhang et al [7] and Beeres et al [8]. Regarding the DLP, the median value of our study was more or less comparable to Cornea et al [9] and Ippolito et al [6] and higher than Zhang et al [7], Manheimer et al [10] and Beeres et al [8].…”

Section: Resultssupporting

confidence: 81%

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Institutional doses for chest CTA examinations using a 16-slice system

Messaris

Panayiotakis

2017

J. Phys.: Conf. Ser.

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Abstract. According to the council directive 2013/59/EURATOM, an important tool for the optimization of the radiation doses delivered to patients is the Diagnostic Reference Levels (DRLs). The Greek Atomic Energy Commission (GAEC) reports the national DRLs, based on institutional dose levels reported from various hospitals. There is a lack of national DRLs regarding various examinations and among them is the Computed Tomography Angiography (CTA). In this work, the dose delivered to patients during chest CTA examinations, at the University Hospital of Patras (UHP), is presented. Thirty standard sized patients were evaluated using a 16-slice CT system. The median value of the volume Computed Tomography Dose Index (CTDIvol) was 12.07 mGy and the median value of the Dose Length Product (DLP) was 429.66 mGy•cm. These values were comparable or higher than the corresponding values of the existing bibliography. The values reported could contribute in the establishment of the national DRLs.

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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 81%

Institutional doses for chest CTA examinations using a 16-slice system

Messaris

Panayiotakis

2017

J. Phys.: Conf. Ser.

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“…Ippolito D. et al [2], using a 256-row CT, significantly decreased the radiation exposure by ECGgated Aortic CT.…”

Section: Discussionmentioning

confidence: 99%

“…Concerning contrast reduction, a significant contribution came from Ippolito D. et al [2] who, using 256-row CT, administered only 30 ml of contrast medium.…”

Section: Discussionmentioning

confidence: 99%

Low Radiation and Contrast Medium Dose in 64- Slices Multidtector Ct Angiography of Thoracic Aorta

Molfetta¹,

Monte²,

Guerrisi³

et al. 2017

RadJ

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Abstract. The evaluation of chronic aortic diseases, many protocols of low radiation dose and low medium iodine contrast dose are performed. The main aim of this study is to give a preliminary evaluation of dose reduction and iodine dose reduction. In our hospital, from February 2013 to November 2016 we selected 150 patients divided into two groups: 60 for our study and a control group of 90 cases. All CT examinations were performed with a 64-MDCT scan (Optima-CT GE Healtcare). Tube voltage was reduced in our study (80 kVp versus 120 in our standard) with automated current modulation system in both groups. Concerning the iodine dose reduction, in the study groups it was strongly reduced (40 cc of 370 mg/ml versus 90 cc of 370 mg/ml): a mechanical power injector was used to administer the contrast material via catheters (20-gauge) placed in the antecubital vein at a flow rate of 4.5 ml/sec. Two radiologists qualitatively graded the image quality of all cases, defining the walls and the enhancement of the lumen of the aorta. On the basis of the criteria reported in the literature, a five-point subjective scale was used to grade image quality, from excellent (1) to non-diagnostic quality (5). The reasons for the degraded image quality were due to high BMI and consisted especially in low signal/noise ratio, and in two cases it was due to the suboptimal contrast enhancement owing to poor bolus timing. In the cases of low signal/noise ratio, a smooth filter was applied to reduce the noise. The results of this study provide useful information about the reduction of the radiation dose and the medium iodine contrast. The diagnostic quality of the scan performed with a low dose of iodine and radiation overlays with the scans performed with the standard protocol. The study groups revealed a strong reduction dose in terms of DLP, and the quality of images was similar to the control group.

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“…The key feature of the “double‐low” CTA technique is improvement of the contrast between the contrast medium in the vessels and the adjacent tissues. At present, it is a frequent practice to apply the “double‐low” technique in abdominal CTA for individuals with low‐to‐medium BMI by lowering tube voltage . With the decrease in tube voltage, X‐ray photon energy is reduced, and the photoelectric effect is significantly increased when the photon energy level approaches that of tissues or structures containing elements of high atomic number (e.g.…”

Section: Discussionmentioning

confidence: 99%

Feasibility of spectral imaging with low-concentration contrast medium in abdominal CT angiography of obese patients

Liu

Лю

et al. 2016

Int J Clin Pract

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Low kV settings CT angiography (CTA) with low dose contrast medium volume protocol in the assessment of thoracic and abdominal aorta disease: a feasibility study

Abstract: Minutolo O, Sironi S. Low kV settings CT angiography (CTA) with low dose contrast medium volume protocol in the assessment of thoracic and abdominal aorta disease: a feasibility study. Br J Radiol 2015;88:20140140.

Cited by 67 publications

References 22 publications

Institutional doses for chest CTA examinations using a 16-slice system

Institutional doses for chest CTA examinations using a 16-slice system

Low Radiation and Contrast Medium Dose in 64- Slices Multidtector Ct Angiography of Thoracic Aorta

Feasibility of spectral imaging with low-concentration contrast medium in abdominal CT angiography of obese patients

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