Results 251 to 260 of about 5,827,281 (280)

Volume CT Dose Index and Dose-Length Product Displayed during CT: What Good Are They?

Radiology, 2011
The average medical radiation effective dose to the U.S. population in 2006 was estimated at approximately 3.0 mSv, an increase of 600% in a single generation. Computed tomography (CT) alone accounts for approximately half of this medical radiation dose.

exaly   +3 more sources

Dose-length-product determination on cone beam computed tomography through experimental measurements and dose-area-product conversion

Medical Imaging 2021: Physics of Medical Imaging, 2021
The dosimetry of cone beam computed tomography (CBCT) is not fully elaborated yet, and some of these systems presents dose-area-product (DAP) values after an examination rather than, as in the case of traditional CT, the doselength- product (DLP). The purpose of this study was to provide a reproducible and straight-forward method for DLP measurements ...
Veronica Fransson, Anders Tingberg
openaire   +2 more sources

How to Appropriately Calculate Effective Dose for CT Using Either Size-Specific Dose Estimates or Dose-Length Product

American Journal of Roentgenology, 2015
The purpose of this study is to show how to calculate effective dose in CT using size-specific dose estimates and to correct the current method using dose-length product (DLP).Data were analyzed from 352 chest and 241 abdominopelvic CT images. Size-specific dose estimate was used as a surrogate for organ dose in the chest and abdominopelvic regions ...
Samuel Brady, Robert Kaufman
exaly   +3 more sources

Cost-effective shielding design based on the dose length product method for shielding calculations in X-ray computed tomography systems

Radiation Protection Dosimetry
Abstract In medical facilities, pre-shielding calculations are essential when introducing new X-ray equipment to protect the staff from radiation. For computed tomography (CT), the dose length product (DLP) method is commonly used for shielding calculations. This method allows the evaluation of the dose at any wall position.
Kimiya Noto, Wataru Mitsui, Tadanori Takata, Hironori Kojima, Kosuke Matsubara, Ichiro Yamaguchi   +5 more
openaire   +3 more sources

Effective Dose and Dose-Length Product in CT

Radiology, 2009
Terry T Yoshizumi, Philip C Goodman
exaly   +3 more sources

Conversion from dose-length product to effective dose in computed tomography venography of the lower extremities

Journal of Radiological Protection, 2022
Abstract For radiation dose assessment of computed tomography (CT), effective dose (ED) is often estimated by multiplying the dose-length product (DLP), provided automatically by the CT scanner, by a conversion factor. We investigated such conversion in CT venography of the lower extremities performed in conjunction with CT pulmonary ...
Yusuke Inoue, Yuka Yonekura, Kazunori Nagahara, Ayuka Uehara, Hideki Ikuma   +4 more
openaire   +2 more sources

A Monte Carlo investigation of dose length product of cone beam computed tomography scans

Journal of Radiological Protection, 2020
Abstract The dose length product ( DLP ) provides a measurement related to energy imparted from a computed tomography (CT) scan. The DLP is based on the volume-averaged CT dose index ( CTDI vol
Abdullah Abuhaimed, Colin J Martin
openaire   +2 more sources

Monte Carlo simulations of organ and effective doses and dose–length product for dental cone-beam CT

Oral Radiology, 2023
The use of dental cone-beam CT (CBCT) has increased in recent years. We aimed to calculate the organ and effective doses in dental CBCT using Monte Carlo simulation (MCS) and to correlate the effective dose with the dose-length product (DLP), which is a radiation dose index.Organ and effective doses were calculated by MCS using the adult male and ...
Shingo Terashima, Junta Sano, Minoru Osanai, Keisuke Toshima, Kentaro Ohuchi, Yoichiro Hosokawa   +5 more
openaire   +2 more sources

MONITORING DOSE–LENGTH PRODUCT IN COMPUTED TOMOGRAPHY OF THE CHEST CONSIDERING SEX AND BODY WEIGHT

Radiation Protection Dosimetry, 2015
Dose-length product (DLP) is widely used as an indicator of the radiation dose in computed tomography. The aim of this study was to investigate the significance of sex and body weight in DLP-based monitoring of the radiation dose. Eight hundred computed tomographies of the chest performed using four different scanners were analysed.
Yusuke, Inoue, Kazunori, Nagahara, Naomichi, Hayakawa, Hironori, Hanawa, Hirofumi, Hata   +4 more
openaire   +2 more sources

Factors affecting dose-length product of computed tomography component in whole-body positron emission tomography/computed tomography

Journal of Radiological Protection, 2022
Abstract In whole-body positron emission tomography (PET)/computed tomography (CT), it is important to optimise the CT radiation dose. We have investigated factors affecting the dose-length product (DLP) of the CT component of whole-body PET/CT and derived equations to predict the DLP.
Yusuke Inoue, Keita Takahashi, Hiroki Miyatake, Kazunori Nagahara, Rie Iwasaki   +4 more
openaire   +2 more sources