Progressive intra-individual radiation dose reduction during CT surveillance of a patient with alcapa syndrome

Meyer, Mathias; Schoepf, U. Joseph; Fink, Christian; Hlavacek, Anthony M.; Henzler, Thomas

doi:10.4261/1305-3825.dir.5380-11.1

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…As the number of slices obtained in multi detector CTPA is higher, the dose with CTPA is higher than for other CT applications and it is possible to decrease the kilovolt (kV) value to do the same with the radiation dose received [6,7]. Thus, using the lowest kV value in CTPA that will not affect the sensitivity of PTE diagnosis may help decrease the radiation dose received.…”

Section: Introductionmentioning

confidence: 99%

Diagnostic quality of CT pulmonary angiography in pulmonary thromboembolism: A comparison of three different kV values

et al. 2013

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BackgroundOur purpose was to evaluate the effectiveness of different kilovolt (kV) uses in computed tomography pulmonary angiography (CTPA) in the diagnosis of pulmonary thromboembolism (PTE). We also aimed to establish the optimal kV value and investigate the possibility of obtaining appropriate imaging quality with minimal radiation dose.Material/MethodsWe compared 120, 100, and 80 kV CTPA for 90 patients in whom PTE was clinically considered. The examinations were carried out using a 128 multislice CT device (Definition AS, Siemens Medical Solutions, Forchheim, Germany). Each kV value was used on 30 patients in 3 groups. Patients in all groups were compared with respect to the mean radiation dose they received, pulmonary arterial attenuation values, image quality, and motion artefacts.ResultsWith respect to pulmonary arterial attenuation values, imaging with 80 kV yielded significantly higher values (p<0.05). However, no difference was found between 120 kV, 100 kV, and 80 kV with respect to image quality. Similarly, no significant difference was detected between the groups with respect to pulmonary artery contrasting and motion artefacts. Statistically significant differences were present in DLP values and effective dose among all 3 groups (p<0.001).ConclusionsUsing 80 kV as the low value in CTPA imaging for patients pre-diagnosed with PTE will increase the density of pulmonary arteries and decrease the amount of radiation received.

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Section: Introductionmentioning

confidence: 99%