Anatomy-Weighted CTDIvol From Routine CT Metadata: A Patient-Specific, Multi-Vendor Study Using Deep-Learning Segmentation [PDF]
TomographyBackground/Objectives: The volume computed tomography (CT) dose index (CTDIvol) is a scanner output, not an organ dose, and cannot express how tube-current modulation varies along a patient. An organ-specific weighted CTDIvol addressing this has been reported before, in single-institution cohorts and often from inputs routine archives do not retain ...
Shuji Yamamoto
exaly +6 more sources
Comparison of Size Specific Dose Estimates (SSDE) and CTDIvol Values in Patients Undergoing CT Examinations of Abdomen and Pelvis [PDF]
Radiography OpenIntroduction: Computed Tomography Dose Index volume (CTDIvol) is a measure of radiation output of the CT scanner and does not represent patient dose. It often underestimates the radiation dose being given to small children and smaller adults and overestimates the dose to larger patients.
Sharma Paudel +2 more
exaly +7 more sources
The Effect of Age and Body Mass on CTDIvol and DLP Values in CT Scan Patients at Andalas University Hospital [PDF]
Jurnal Pendidikan Fisika Dan TeknologiMeningkatnya penggunaan sinar-X di bidang medis disertai dengan kemajuan teknologi yang pesat dan telah berdampak signifikan pada radiologi terapeutik dan diagnostik. Di bidang radiologi diagnostik, modalitas dengan teknologi canggih yang memanfaatkan sinar-X adalah Computed Tomography Scanner (CT Scan).
Dian Milvita, Rani Delvihardini
exaly +7 more sources
Evaluation of the Influence of Factors on CTDIvol and CNR in CT-Scan Thorax Procedures [PDF]
ORBITA Jurnal Kajian Inovasi Dan Aplikasi Pendidikan FisikaThis study investigates the effect of exposure parameter variations in CT-Scan on image quality and radiation dose during thoracic examinations. The exposure parameters analyzed were tube voltages of 80, 100, and 120 kV, along with tube currents of 100, 200, and 300 mA.
Nadhia Nortania Sari +2 more
exaly +4 more sources
The feasibility of a scanner-independent technique to estimate organ dose from MDCT scans: Using CTDIvol to account for differences between scanners [PDF]
Medical Physics, 2010 Monte Carlo radiation transport techniques have made it possible to accurately estimate the radiation dose to radiosensitive organs in patient models from scans performed with modern multidetector row computed tomography (MDCT) scanners. However, there is considerable variation in organ doses across scanners, even when similar acquisition conditions ...
Adam C, Turner +9 more
openaire +3 more sources
Is there correlation between measured and console CTDIvol in multislice CT scanners? [PDF]
Journal of Nursing & Healthcare, 2022 Abstract This study investigated the relationship between measured and console volume computed tomography dose index (CTDIvol) in multislice CT scanners. The measured CTDI values were determined from kerma length product measured using pencil ionization chamber inserted in the holes of standard CT phantoms with diameters 16 and 32 cm, which ...
openaire +3 more sources
Assessment of chest CT at CTDIvol less than 1 mGy with iterative reconstruction techniques [PDF]
The British Journal of Radiology, 2017 Objective: To assess the image quality of chest CT reconstructed with image-based iterative reconstruction (SafeCT; MedicVision®, Tirat Carmel, Israel), adaptive statistical iterative reconstruction (ASIR; GE Healthcare, Waukesha, WI) and model-based iterative reconstruction (MBIR; GE Healthcare, Waukesha, WI ...
Atul Padole +6 more
openaire +2 more sources
Establishing how patient size and degree of miscentring affect CTDIvol, using patient data from a dose tracking system [PDF]
The British Journal of Radiology, 2019 Objectives: The work aimed to investigate and model the relationship between CT dose index (CTDIvol), patient size and miscentring metrics using data extracted from a dose tracking software tool. Further, using the established model we aimed to extract and estimate further AEC metrics and, finally, demonstrate how ...
Sean, Cournane +2 more
openaire +2 more sources
Evaluation and Validation of Computed Tomography Dose Accuracy(CTDIw AND CTDIvol)
, 2017 Weighted and average dose within a scan volume of a phantom have been evaluated and validated using two different devices and techniques. The Barracuda electrometer and Ion Chamber techniques were applied on a 16 slice Siemens CT scanner and the results compared to the console displayed CTDIw and CTDIvol values for accuracy and compared to each other ...
Sintim, Abrokwa +3 more
openaire +2 more sources
Radiation Dose Assessment In Pediatric Chest Ct Protocols With Emphasis On Ctdivol And Dlp
Journal of CarcinogenesisPediatric chest computed tomography (CT) is an essential diagnostic tool, children's increased radiosensitivity and extended life expectancy present serious difficulties. With an emphasis on the Computed Tomography Dose Index volume (CTDIvol) and Dose Length Product (DLP), this paper evaluates the state of the art on radiation dose assessment in ...
Rashmi Singh +6 more
openaire +1 more source