Patient dose in CT angiography examinations: An institutional survey

Metaxas, Vasileios I; Dimitroukas, Christos P.; Efthymiou, Fotios O.; Zampakis, Petros; Panayiotakis, George; Kalogeropoulou, Christina

doi:10.1016/j.radphyschem.2022.110083

Cited by 9 publications

(5 citation statements)

References 72 publications

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“…Since by using iterative reconstruction, good-quality images can be provided via lower kV and mAs ( Klink et al, 2014 ; Solomon et al, 2017 ). Other studies also show the effect of imaging protocols and reconstruction on radiation dose ( Dimitroukas et al, 2022 ; Metaxas et al, 2022 ). In this study, H2 and H4 were equipped with CT scanners with almost the same features that were eqqipped with iterative reconstruction.…”

Section: Discussionmentioning

confidence: 99%

Is it necessary to define new diagnostic reference levels during pandemics like the Covid19-?

Zeinali-Rafsanjani

Alavi

Lotfi

et al. 2023

Radiation Physics and Chemistry

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Section: Discussionmentioning

confidence: 99%

Is it necessary to define new diagnostic reference levels during pandemics like the Covid19-?

Zeinali-Rafsanjani

Alavi

Lotfi

et al. 2023

Radiation Physics and Chemistry

View full text Add to dashboard Cite

“…CT imaging to assess CF lung disease is routinely performed at low dose and without contrast material application at most centres, which is not suitable to detect BAD [ 40 ]. Further, contrast-enhanced CT angiography of the chest which would be required to detect BAD is reserved for the emergency setting and is associated with a much higher radiation dose of ∼5 mSv in adults compared with low-dose CT which averages typically ∼1 mSv [ 41 , 42 ]. Second, we were not able to determine the relationship between the presence of BAD and events of haemoptysis in our study, as this event has not been systematically documented in the database of our study cohort.…”

Section: Discussionmentioning

confidence: 99%

Magnetic resonance imaging detects onset and association with lung disease severity of bronchial artery dilatation in cystic fibrosis

et al. 2023

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RationaleBronchial artery dilatation (BAD) is associated with haemoptysis in advanced cystic fibrosis (CF) lung disease. Our aim was to evaluate BAD onset and its association with disease severity by magnetic resonance imaging (MRI).Materials and Methods188 CF patients (mean age 13.8±10.6 y, range 1.1–55.2 y) underwent annual chest MRI (median three exams, range one to six), contributing a total of 485 MRI examinations incl. perfusion MRI. Presence of BAD was evaluated by two radiologists in consensus. Disease severity was assessed using the validated MRI score and spirometry (ppFEV1).ResultsMRI demonstrated BAD in 71 (37.8%) CF patients consistently from the first available examination, and further ten (5.3%) patients first developed BAD during surveillance. Mean MRI global score in patients with BAD was 24.5±8.3 compared to 11.8±7.0 without BAD (p<0.001), and ppFEV1was lower in BAD compared to patients without (60.8versus82.0%, respectively, p<0.001). BAD was more prevalent in patients with chronicP. aeruginosainfectionversusin patients without (63.6%versus28.0%, p<0.001). In the ten patients who newly developed BAD the MRI global score increased from 15.1±7.8 before to 22.0±5.4 at first detection of BAD (p<0.05). Youden indices for presence of BAD were 0.57 for age (cut-off 11.2 y), 0.65 for ppFEV1(cut-off 74.2%), and 0.62 for MRI global score (cut-off 15.5) (p<0.001).ConclusionMRI detects BAD in patients with CF without radiation exposure. Onset of BAD is associated with increased MRI scores, worse lung function, and chronicP. aeruginosainfection, and may serve as a marker of disease severity.

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“…Duplex ultrasound, computer tomographic angiography, magnetic resonance angiography, and invasive angiography have a different sensibility and specificity for detecting peripheral artery disease. For example, when comparing multidetector computer tomography with angiography, the sensitivity and specificity of multidetector computer tomography for detecting peripheral artery disease is 90% [ 97 , 98 , 99 ].…”

Section: Diagnostic Approach To Peripheral Artery Diseasementioning

confidence: 99%

Acute Coronary Syndrome: Disparities of Pathophysiology and Mortality with and without Peripheral Artery Disease

Gherasie

Popescu

Bartos

2023

JPM

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There are a number of devastating complications associated with peripheral artery disease, including limb amputations and acute limb ischemia. Despite the overlap, atherosclerotic diseases have distinct causes that need to be differentiated and managed appropriately. In coronary atherosclerosis, thrombosis is often precipitated by rupture or erosion of fibrous caps around atheromatous plaques, which leads to acute coronary syndrome. Regardless of the extent of atherosclerosis, peripheral artery disease manifests itself as thrombosis. Two-thirds of patients with acute limb ischemia have thrombi associated with insignificant atherosclerosis. A local thrombogenic or remotely embolic basis of critical limb ischemia may be explained by obliterative thrombi in peripheral arteries of patients without coronary artery-like lesions. Studies showed that thrombosis of the above-knee arteries was more commonly due to calcified nodules, which are the least common cause of luminal thrombosis associated with acute coronary events in patients with acute coronary syndrome. Cardiovascular mortality was higher in peripheral artery disease without myocardial infarction/stroke than in myocardial infarction/stroke without peripheral artery disease. The aim of this paper is to gather published data regarding the disparities of acute coronary syndrome with and without peripheral artery disease in terms of pathophysiology and mortality.

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Patient dose in CT angiography examinations: An institutional survey

Cited by 9 publications

References 72 publications

Is it necessary to define new diagnostic reference levels during pandemics like the Covid19-?

Is it necessary to define new diagnostic reference levels during pandemics like the Covid19-?

Magnetic resonance imaging detects onset and association with lung disease severity of bronchial artery dilatation in cystic fibrosis

Acute Coronary Syndrome: Disparities of Pathophysiology and Mortality with and without Peripheral Artery Disease

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