ArticleAsia Oceania journal of nuclear medicine & biology2020
Size specific dose estimate (SSDE) for estimating patient dose from CT used in myocardial perfusion SPECT/CT.
Article in Asia Oceania journal of nuclear medicine & biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 18 citations in OpenAlex.
- Size-specific dose estimation in pediatric computed tomography: From dose characterization to individualized optimization.World journal of radiology · 2026Review
- Contemporary strategies for dose optimization in pediatric congenital heart disease CT: size-specific acquisition and detector-level advances.Radiological physics and technology · 2026Review
- Computed Tomography Diagnostic Reference Levels Worldwide and in Jordan: Implications for Patient Dose Reduction.Drug, healthcare and patient safety · 2026Review
- Radiation Dose of Abdominal and Lung Computed Tomography Based on Body Mass Index as an Indicator.The Malaysian journal of medical sciences : MJMS · 2025Article
- A multi-institutional CT practices survey of pediatric head, chest, and abdomen-pelvis examinations.Acta radiologica open · 2025Article
- Size-specific dose estimates calculated using patient size measurements from scanned projection radiograph in high-resolution chest computed tomography.Journal of medical radiation sciences · 2025Article
- Computed Tomography Doses Calculation: Do We Really Need a New Dose Assessment Tool?Journal of clinical medicine · 2025Article
- Optimization of Bolus-Tracking Thresholds levels in Cerebral CT Angiography: Influence of Patient Characteristics on contrast enhancement dynamics and radiation dose metrics.F1000Research · 2025Article
- Fast prediction of personalized abdominal organ doses from CT examinations by radiomics feature-based machine learning models.Scientific reports · 2024Article
- Computed Tomography Effective Dose and Image Quality in Deep Learning Image Reconstruction in Intensive Care Patients Compared to Iterative Algorithms.Tomography (Ann Arbor, Mich.) · 2024Article
- Size-Specific Dose Estimates for Thoracic and Abdominal Computed Tomography Examinations at Two Moroccan Hospitals.Journal of digital imaging · 2022Article
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3 authors at 1 institution in 1 country.
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Abstract
objectivesSize 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. The objective of the study was to find out if there is a relationship between patient size and each of the parameters, SSDE and CTDIvol, when AEC is used.
methodsCT data of consecutively selected 111 patients were included for analysis. CTDIvol values of the CT scans were extracted for each patient. Effective diameter of each patient was calculated as geometric mean of anteroposterior and lateral diameters measured on axial CT images. Corresponding conversion factors for effective diameters were obtained from American Association of Physicists in Medicine (AAPM) report 204. SSDE was obtained as the product of CTDIvol and conversion factor values. Linear regression model was used to evaluate the relationship between patient size and the parameters SSDE and CTDIvol.
resultsMean weight was 62 (11.5) and range was 34 - 103 kg. Median CTDIvol (mGy) on AEC mode was 7.27(IQ range 7.27, 7.65) and mean effective diameter was 26.2 cm (2.4). Mean SSDE (mGy) was 10.6 (0.84). Good positive correlation was obtained between CTDIvol and effective diameter (r=0.536; p<0.0005). Strong inverse correlation was noted between SSDE and effective diameter (r=-0.777; p<0.0005). Linear regression model for establishing relationship between CTDIvol and effective diameter showed slope of 0.314mGy/cm (R=0.561; R2=0.314; P<0.0005) whereas between effective diameter and SSDE slope was -0.23mGy/cm (R=0.676; R2=0.457; P< 0.0005).
conclusionThe study shows that CTDIvol and SSDE vary but divergently, with patient size. SSDE is a better estimate of patient radiation dose from CT of MPI SPECT/CT than CTDIvol in systems that use automated exposure control.
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