Results 21 to 30 of about 13,337,459 (299)

Towards prospective identification of optimal scan parameters for CT-guided interventions: a phantom study [PDF]

Scientific Reports
CT-guided interventions require balance between radiation dose and image quality. This study evaluates the impact of tube voltage and tube load on the contrast-to-noise ratio (CNR) across different patient sizes and target tissues. A modular multi-energy
Constantin Schareck, Neele Blumhoff, Malte M. Sieren, Roman Kloeckner, Franz Wegner   +4 more
doaj   +2 more sources

Relationship between Water-equivalent Diameter, Computed Tomography Dose Indices, and Image Noise in Pediatric Head Computed Tomography Under Active and Inactive Tube Current Modulation [PDF]

Journal of Medical Physics
Purpose: This study investigated the relationships among water-equivalent diameter (Dw), volume computed tomography dose index (CTDIvol), size-specific dose estimate (SSDE), and image noise in pediatric head computed tomography (CT) under active and ...
Evi Setiawati, Choirul Anam, Bella Diani Safitri, Much Azam, Qidir Maulana Binu Soesanto, Agus Margiantono   +5 more
doaj   +2 more sources

Determination of Patient Dose on Head Computed Tomography Scan on Risk Factors of Cataract Using Size-Specific Dose Estimate (SSDE) [PDF]

Buletin Fisika
Research has been done on determining the patient's dose on a Computed Tomography (CT) Scan of the head using the Size Specific Dose Estimate (SSDE) method and the risk factors for cataracts.
Shinta Palupi, Ni Luh Putu Trisnawati, Winardi Tjahyo Baskoro, Rozi Irhas   +3 more
doaj   +2 more sources

A Segmentation-based Automated Calculation of Patient Size and Size-specific Dose Estimates in Pediatric Computed Tomography Scans

Journal of Medical Physics
Background and Purpose: Size-specific dose estimates (SSDE) have been introduced into computed tomography (CT) dosimetry to tailor patients’ unique sizes to facilitate accurate CT radiation dose quantification and optimization.
Muhammad Kabir Abdulkadir, Noor Diyana Osman, Anusha Achuthan, Radin A. Nasirudin, Muhammad Zabidi Ahmad, Noor Hasyima Mat Zain, Ibrahim Lutfi Shuaib   +6 more
doaj   +2 more sources

The Evaluation of the Effective Diameter (D_eff) Calculation and its Impact on the Size-Specific Dose Estimate (SSDE)

Atom Indonesia, 2017
Information on the effective diameter (Deff) is essential for estimating the dose for patients undergoing CT examinations. The purpose of this study was to calculate the effective diameter using the maximum values of lateral (LAT) and anterior-posterior (
C. Anam, F. Haryanto, R. Widita, I. Arif, G. Dougherty   +4 more
doaj   +2 more sources

Size-specific dose estimate (SSDE) provides a simple method to calculate organ dose for pediatric CT examinations. [PDF]

Med Phys, 2014
Moore BM, Brady SL, Mirro AE, Kaufman RA.   +3 more
europepmc   +2 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 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