The recommendations concern annual check-ups for certain patients the use of low-dose computed tomography (LDCT) scans. It discusses an article by USPSTF chair Virginia Moyer published in an issue of the periodical "Annals of Internal Medicine" wherein she talked about patient exceptions, preferred...
The term refers to CT scans where, compared to a “normal” or “standard” dose scan, the image quality has been deliberately modified to reduce the exposure dose while preserving the diagnostic performance [20]. Renal colic is particularly appropriate for low-dose CT because of the excellent...
CT screening for lung cancer: implication of lung biopsy recommendations. AJR Am J Roentgenol. 2012;198(2):351-358. doi:10.2214/AJR.11.6726 PubMedGoogle ScholarCrossref 64. Croswell JM, Baker SG, Marcus PM, Clapp JD, Kramer BS. Cumulative incidence of false-...
Dose rates of 0.50 to 0.65 Gy/h are suggested for intracavitary brachytherapy. Dose rates of 0.50 to 0.70 Gy/h to the periphery of the implant are suggested for interstitial implant. Use of differential source activity or loading minimizes excessive central dose rates. These recommendations are ...
The CT scanner was operated at a tube voltage of 100 kVp, 40 mm collimation, pitch 0.98 and a gantry rotation time of 0.35 seconds. A total of six helical scan series were taken at different dose levels. The applied volumetric CT dose index (CTDIvol) values were 6.04 mGy (routine ...
US panel narrows recommendations for low dose aspirin for cardiovascular disease preventiondoi:10.1136/bmj.h4991BMJBmjMichaelMcCarthy
Hérin E, Gardavaud F, Chiaradia M et al (2015) Use of Model-Based Iterative Reconstruction (MBIR) in reduced-dose CT for routine follow-up of patients with malignant lymphoma: dose savings, image quality and phantom study. European radiology:1–9 Puchner SB, Ferencik M, Maurovich-Horvat...
Protocols for CT acquisition allowed to estimate radiation doses during every CT scan. In every patient, the dose-length product (DLP) was assessed. Also, the effective radiation dose (ED) was measured in each case with the formula “ED (mSv) ≈DLP × k”, where k is a conversion ...
Low-dose CT in combination with appropriate diagnostic algorithms has been shown to detect many asymptomatic, small, early stage, resectable NSCLC with a low proportion of invasive procedures for benign lesions. Because of the huge implications of general screening recommendations definite proof of the...
Scans are considered ‘ultra-low-dose’ if they are <1 mSv; however, these definitions are the subject of debate.41 More scans can be carried out to meet so-called ‘low’ or ‘ultra-low’ dose standards, thanks to improved CT technology, meaning individual scan dose is kept acceptably ...