Low-Dose High-Resolution CT of the Chest in Children and Young Adults

Abstract

Low-dose high-resolution CT provided a significant reduction in radiation dose (72% for 50 mAs and 80% for 34 mAs) and good-quality images of the lung when performed with 50 mAs in noncooperative and 34 mAs in cooperative pediatric and young adult patients.

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

“…2 CTA allows the proper visualization of main vascular structures and has several advantages: minimal invasiveness, with a lower complication rate than that of angiography; generation of high spatial resolution images of both the arterial wall and the lumen; availability of multiplanar reconstructions (MPR) and three-dimensional (3D) reconstructions; and short examination times, allowing extended scan ranges. 1,3 The extended use of MDCT in the clinical practice, however, may result in an increase of both the frequency of CTA studies and patient's radiation exposure compared with single-slice CT. 4 Therefore, CT protocols should be properly designed and carefully applied in order to obtain the highest amount of information by using the lowest radiation dose achievable, [5][6][7][8][9][10] since the theoretical risk of radiation-induced cancer from CT examinations has been reported as not negligible. 1 As the radiation exposure is linearly dependent on the tube current, a helpful technique for reducing radiation dose involves the modulation of tube current itself, according to real-time local attenuation (i.e.…”

Description and validation of a scoring system for tomosynthesis in pulmonary cystic fibrosis

“…The role for CT as a routine assessment method in the management of CF lung disease is still controversial owing to dose issues and is under investigation [37][38][39][40]. As tomosynthesis exposes the patient to a comparatively low radiation dose of only about 10% of the dose from CT with low-dose protocols [41] and is performed on the same X-ray system as chest radiography (adding only about 1 min to the normal examination time), it may become useful in the regular follow-up of CF patients as well as in the everyday clinical practice.…”

Correlation between Bhalla score and spirometry in children and adolescents with Cystic Fibrosis

“…Within this perspective, studies have been conducted in an attempt to reduce doses while maintaining the quality of the images. 8,9 A classic work by Lucaya et al evaluated the effect of the reduction of this dose on the quality of the images and standards the so-called "low dose HRCT". Low dose HRCT presents a significant reduction in the dose of radiation received by the patient (72% when using 50 mAs and 80% when using 34 mAs) compared to the exam with the usual dose (180 mAs).…”

“…In the majority of cases, a positive correlation can be noted between them, with the exception of patients with diseases considered as mild, who may present alterations in the tomography examinations and normal pulmonary function tests. [8][9][10] Comparing the different evaluation parameters of pneumonopathy in CF is important for understanding the evolution of the changes and establishing criteria for realizing preliminary and therapeutic interventions at the appropriate time.…”