Results 1 to 10 of about 13,693,867 (238)

Optimizing Radiation Dose in High-Resolution Chest CT: The Impact of Patient-Specific Factors and Size-Specific Dose Estimates

Diagnostics
Background/Objectives: High-resolution chest computed tomography (HRCT) is a critical diagnostic tool, but radiation dose optimization remains a significant concern. Traditional dose metrics such as the volume CT dose index (CTDIvol) and dose-length product (DLP) do not adequately account for patient size variations.
Mohamed M Abuzaid
exaly   +5 more sources

Multivariate analysis of effective dose and size-specific dose estimates for thorax and abdominal computed tomography

Journal of Medical Physics, 2023
The study aimed to compute the effective dose (E) and size-specific dose estimate (SSDE) of routine adult patients undergoing thorax and abdominal computed tomography (CT) imaging and to present their multivariate analysis. All adult thorax and abdominal
Mudasir Ashraf Shah, Mehtab Ahmad, Saifullah Khalid, Syed M Danish Qaseem, Shaista Siddiqui, Sayema Talib, Sajad Ahmed Rather, Arfat Firdous   +7 more
doaj   +3 more sources

Size-Specific Dose Estimate and Effective Dose for Pediatric Computed Tomography

Journal of Medical Physics
The purpose of this study is to present the multivariate analysis of the size-specific dose estimate (SSDE) and E in pediatric computed tomography (CT) imaging.
Rukhsar Khan, Mudasir Ashraf Shah, Shagufta Wahab, Rizwan Ahmad Khan   +3 more
doaj   +3 more sources

Size specific dose estimate (SSDE) for estimating patient dose from CT used in myocardial perfusion SPECT/CT [PDF]

Asia Oceania Journal of Nuclear Medicine and Biology, 2020
Objective(s): Size specific dose estimate (SSDE) is a new parameter that includes patient size factor in its calculation. Recent studies have produced mixed results on the utility of SSDE, especially when automatic exposure control (AEC) was used.
Vishnukumar Rajaraman, Madhusudhanan Ponnusamy, Dhanapathi Halanaik   +2 more
doaj   +3 more sources

Evaluation of Size-Specific Dose Estimates for Optimizing Pediatric Chest CT Protocol [PDF]

Iranian Journal of Medical Physics, 2022
Introduction: The importance of estimating patient-sized adjusted radiation dose for pediatric computed tomography (CT) has long been accepted. High doses of ionizing radiation to children are often common in chest CT examinations, as the volume CT dose ...
Fariba Zarei, Mahdokht Nasiri, Zahra Etemadi, Rezvan Ravanfar Haghighi, Sabysachi chatterjee, Pouria Abdollahi Khaneghah, Vani Vardhan Chatterjee   +6 more
doaj   +1 more source

Size-specific Dose Estimate for Lower-limb CT

Physical and Engineering Sciences in Medicine, 2022
Abstract The Computed Tomography Dose Index (CTDI) is an indicator for dose management in computed tomography (CT), but has limited use for patient dosimetry. To evaluate the patient dose, the size-specific dose estimate (SSDE), reported by the American Association of Physics in Medicine task groups 204, 220, and 293, must be calculated by the ...
Masanao Kobayashi, Yusei Nishihara, Tomonobu Haba, Yuta Matsunaga, Yasuki Asada, Shigeki Kobayashi   +5 more
openaire   +2 more sources

SIZE-SPECIFIC DOSE ESTIMATES IN FETAL COMPUTED TOMOGRAPHY

Radiation Protection Dosimetry, 2022
Abstract During fetal computed tomography (CT) imaging, because of differences in the pregnancy period and scanning conditions, different doses of radiation are absorbed by the fetus. We propose a correction coefficient for determining the fetal size-specific dose estimate (SSDE) from the CT dose index (CTDI) displayed on the console at ...
Masanao Kobayashi, Yusei Nishihara, Tomonobu Haba, Yuta Matsunaga, Kazuyuki Minami, Yasuki Asada   +5 more
openaire   +2 more sources

Body-Mass Index-Based Effective Dose Determination in Commonly Performed Computed Tomography Examinations in Adults

Frontiers in Biomedical Technologies, 2022
Purpose: With the widespread application of ionizing radiation in medical practice, concerns have been increased regarding the hazardous effects of radiation.
Mohammad Reza Deevband, Seyed Mohammad Bagher Hosseini Nasab, Habib Mohammadi, Yazdan Salimi, Ahmad Mostaar, Niloofar Deravi, Mobina Fathi, Kimia Vakili, Shirin Yaghoobpoor, Mehdi Ghorbani   +9 more
doaj   +1 more source

Determinação da dose em pacientes submetidos a exames de tomografia computadorizada de abdome em um serviço de radiologia e diagnóstico por imagem

Brazilian Journal of Radiation Sciences, 2020
A incorporação de novas tecnologias nos últimos anos proporcionou um aumento expressivo no número de exames de tomografia computadorizada (TC) realizados no mundo e no Brasil e consequentemente seus efeitos deletérios relacionados à radiação ionizante. O
Fabricio Maia Torres Alves, Linda Viola Ehlin Caldas   +1 more
doaj   +1 more source

Determination of Diagnostic Reference Level (DRL) in Common Computed Tomography Examinations with the Modified Quality Control-Based Dose Survey Method in Four University Centers: A Comparison of Methods [PDF]

Journal of Biomedical Physics and Engineering, 2021
Background: The diagnostic reference level (DRL) is measured with different methods in the common Computed tomography (CT) exams, but it has not been measured through the size-specific dose estimate (SSDE) method in Iran, yet. Objective: This study aimed
Jalal Tabesh, Maziyar Mahdavi, Gholamhasan Hadadi, Rezvan Ravanfar Haghighi, Reza Jalli   +4 more
doaj   +1 more source