Comparison of image quality and radiation dose between combined automatic tube current modulation and fixed tube current technique in CT of abdomen and pelvis

Lee, Sang‐Hee; Yoon, Sang-Wook; Yoo, Seung-Min; Ji, Young Geon; Kim, Kyoung Ah; Kim, Sang Heum; Lee, Jong Tae

doi:10.1258/ar.2011.100295

Cited by 37 publications

(21 citation statements)

References 30 publications

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“…Major efforts are therefore being made by vendors of CT equipment, radiologists and technicians to minimise the radiation dose of CT examination protocols while maintaining adequate diagnostic image quality. Among the different strategies for radiation-dose reduction, the optimisation of CT hardware like X-ray tube and detectors, the use of X-ray dose modulation [3] and the choice of the most adequate CT examination protocol obviously play a key role. Major progress has also recently been made with regard to the algorithms used for reconstruction of CT images.…”

Section: Introductionmentioning

confidence: 99%

Computed tomography of the chest with model-based iterative reconstruction using a radiation exposure similar to chest X-ray examination: preliminary observations

et al. 2012

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Section: Introductionmentioning

confidence: 99%

Computed tomography of the chest with model-based iterative reconstruction using a radiation exposure similar to chest X-ray examination: preliminary observations

et al. 2012

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“…For example, a tube voltage in the range of 80-100 kV can reduce radiation dose and increase contrast resolution [64]. The use of automated tube current modulation is also recommended with good data showing dose reduction with maintained image quality [69, 70]. It is recommended that cumulative radiation dose should be recorded for patients with chronic conditions requiring multiple radiological examinations.…”

Section: Discussionmentioning

confidence: 99%

The first joint ESGAR/ ESPR consensus statement on the technical performance of cross-sectional small bowel and colonic imaging

et al. 2016

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ObjectivesTo develop guidelines describing a standardised approach to patient preparation and acquisition protocols for magnetic resonance imaging (MRI), computed tomography (CT) and ultrasound (US) of the small bowel and colon, with an emphasis on imaging inflammatory bowel disease.MethodsAn expert consensus committee of 13 members from the European Society of Gastrointestinal and Abdominal Radiology (ESGAR) and European Society of Paediatric Radiology (ESPR) undertook a six-stage modified Delphi process, including a detailed literature review, to create a series of consensus statements concerning patient preparation, imaging hardware and image acquisition protocols.ResultsOne hundred and fifty-seven statements were scored for agreement by the panel of which 129 statements (82 %) achieved immediate consensus with a further 19 (12 %) achieving consensus after appropriate modification. Nine (6 %) statements were rejected as consensus could not be reached.ConclusionsThese expert consensus recommendations can be used to help guide cross-sectional radiological practice for imaging the small bowel and colon.Key points• Cross-sectional imaging is increasingly used to evaluate the bowel • Image quality is paramount to achieving high diagnostic accuracy • Guidelines concerning patient preparation and image acquisition protocols are provided

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“…The dose-reducing effectiveness of ATCM compared to FTC has been demonstrated in several studies [48][49][50] with Lee et al [48] showing an average reduction of 45 % in the abdomen and pelvis CT with images of an acceptable diagnostic level.…”

Section: Automatic Tube Current Modulation (Atcm)mentioning

confidence: 95%

SPECT/CT radiation dosimetry

Ferrari

Marco

Origgi

et al. 2014

Clin Transl Imaging

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Single-photon emission computed tomography combined with X-ray computed tomography (SPECT/CT) improves diagnostic accuracy by allowing better localization and definition of scintigraphic findings. However, the combined acquisition of functional and anatomical images can substantially increase radiation exposure to patients, particularly when using a hybrid system with diagnostic CT capabilities. At the same time, the introduction of new SPECT and CT reconstruction techniques (based on the use of iterative algorithms), and of CT automatic dose modulation techniques, has opened the way for possible reductions in patient dose and/or improvements of image quality. It is, therefore, essential to carefully balance the diagnostic needs and the radiation protection requirements, optimizing the choice of radiopharmaceutical and administered activity, and the image acquisition and processing modalities both in SPECT and in CT. This is particularly important in the case of pediatric examinations. In short, to maximize benefit to patients, SPECT/CT studies have to be optimized, adopting dose-reduction measures both from CT and SPECT practices. In SPECT, shorter lived gamma emitters should be preferred and the amount of activity administered must be carefully adjusted to the patient's size. In CT, scanning parameters (scanning length, tube current, tube voltage, filtration, collimation, slice thickness, pitch, automatic dose modulation method, reconstruction technique, and image processing) must be chosen carefully, remembering that normally the scanned images are used only for the purposes of attenuation correction and/or a more precise localization of scintigraphic findings, which require lower quality and consequently entail a lower dose to the patient. On the other hand, good quality diagnostic CT images, obtained at higher dose levels, are necessary if a diagnostic CT examination must still be planned for the patient. The purpose of this review on SPECT/CT radiation dosimetry is to provide updated information on the total effective dose and total equivalent doses to critical organs due to both radiopharmaceutical administration and CT scan modality for both adults and pediatric patients. The use of new solid-state detectors (cadmium zinc telluride) for SPECT cameras will also be considered. Finally, the means of easily determining SPECT/CT dose to patients will be provided.

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Comparison of image quality and radiation dose between combined automatic tube current modulation and fixed tube current technique in CT of abdomen and pelvis

Abstract: The ATCM for CT of the abdomen and pelvis substantially reduced radiation dose while maintaining diagnostic image quality. Patients with lower BMI showed more reduction in radiation dose.

Cited by 37 publications

References 30 publications

Computed tomography of the chest with model-based iterative reconstruction using a radiation exposure similar to chest X-ray examination: preliminary observations

Computed tomography of the chest with model-based iterative reconstruction using a radiation exposure similar to chest X-ray examination: preliminary observations

The first joint ESGAR/ ESPR consensus statement on the technical performance of cross-sectional small bowel and colonic imaging

SPECT/CT radiation dosimetry

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