Results 21 to 30 of about 13,693,867 (238)

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

Comparisons of Water-Equivalent Diameter Measured on Images of Abdominal Routine Computed Tomography with and without A Contrast Agent

Atom Indonesia, 2021
The size-specific dose estimate (SSDE) is a metric for an estimation of patient dose in computed tomography (CT). The SSDE strongly depends on the water-equivalent diameter (DW).
A. Nitasari, C. Anam, W. S. Budi, A. L. Wati, S Syarifudin, G. Dougherty   +5 more
doaj   +1 more source

Comparative Study of Image Quality and Radiation Dose between 120kVp Filtered Back Projection and 80kVp Iterative Reconstructed Computed Tomography Images

Journal of Karnali Academy of Health Sciences, 2023
Background: Iterative Reconstruction techniques have been shown to produce diagnostically acceptable images at low doses to the patient. This study aimed to compare the image quality and radiation dose between 120kVp Filtered Back Projection and 80kVp ...
Sweta Joshi, Sharma Paudel, Sundar Suwal, Shanta Lall Shrestha, Benu Lohani, Shashi Shekhar Shingh   +5 more
doaj   +1 more source

Size-specific Dose Estimates for Adult Patients at CT of the Torso [PDF]

Radiology, 2012
To determine relationships among patient size, scanner radiation output, and size-specific dose estimates (SSDEs) for adults who underwent computed tomography (CT) of the torso.Informed consent was waived for this institutional review board-approved study of existing data from 545 adult patients (322 men, 223 women) who underwent clinically indicated ...
Jodie A, Christner, Natalie N, Braun, Megan C, Jacobsen, Rickey E, Carter, James M, Kofler, Cynthia H, McCollough   +5 more
openaire   +2 more sources

Violin plot comparison of size-specific dose estimation.

, 2023
The blue graph represents the reduction protocol group, while the red graph represents the standard protocol group in the violin plot chart. The Y-axis represents the size-specific dose estimate of the portal phase.
In Jae Lee (10003351), Hong Il Ha (6260846), Hyun Kyung Lim (9547300), Min Su Park (744914), Jhii-Hyun Ahn (12565060)   +4 more
core   +1 more source

DEVELOPMENT OF A SPECIALISED TAPE MEASURE TO ESTIMATE THE SIZE-SPECIFIC DOSE ESTIMATE

Radiation Protection Dosimetry, 2020
Abstract The risk in computed tomography (CT) examinations is radiation exposure. We aimed to develop a specialised tape measure for determining the size-specific dose estimate (SSDE) for patients undergoing CT scans. The scanning parameters used were those of the abdominal protocol in our institute.
Tomokazu, Shohji, Kazuki, Kuriyama, Nobutaka, Yanano, Yo, Katoh   +3 more
openaire   +2 more sources

The Comparison of Size-Specific Dose Estimate in CT Examination Based on Head and Body PMMA Phantom [PDF]

, 2018
Nowadays, a dose estimate for individual patients undergoing CT examination is carried out using the metric of size-specific dose estimate (SSDE), which is calculated by multiplying a volume CT dose index (CTDIvol) and a correction factor that is a ...
Geoff Dougherty
core   +2 more sources

Investigation of Eye Lens Dose Estimate based on AAPM Report 293 in Head Computed Tomography [PDF]

Journal of Biomedical Physics and Engineering, 2021
Background: Estimation of eye lens dose is important in head computed tomography (CT) examination since the eye lens is a sensitive organ to ionizing radiation.
Choirul Anam, Winda Kusuma Dewi, Masdi Masdi, Freddy Haryanto, Toshioh Fujibuchi, Geoff Dougherty   +5 more
doaj   +1 more source

PATIENTS DOSE ESTIMATION IN CT EXAMINATIONS USING SIZE SPECIFIC DOSE ESTIMATES

Radiation Protection Dosimetry, 2018
Abstract The present work reports data of radiation exposure to the patients during head, chest, pelvis and abdomen CT examinations performed on a third-generation 16-slice CT machine. Radiation exposure was estimated using size specific dose estimates (SSDE) method, which takes into account patient’s physical dimensions in phantom ...
Neha Choudhary, Bhupendra Singh Rana, Arvind Shukla, Arun Singh Oinam, Narinder Paul Singh, Sanjeev Kumar   +5 more
openaire   +2 more sources

Consideration of the usefulness of a size-specific dose estimate in pediatric CT examination [PDF]

Journal of Radiation Research, 2018
Computed tomography (CT) has recently been utilized in various medical settings, and technological advances have resulted in its widespread use. However, medical radiation exposure associated with CT scans accounts for the largest share of examinations using radiation; thus, it is important to understand the organ dose and effective dose in detail. The
Tsujiguchi, Takakiyo, Obara, Hideki, Ono, Shuichi, Saito, Yoko, Kashiwakura, Ikuo   +4 more
openaire   +2 more sources