Results 261 to 270 of about 2,962,605 (298)

Computation Speeds and Memory Requirements of Mesh-Type ICRP Reference Computational Phantoms in Geant4, MCNP6, and PHITS

Health Physics, 2019
Recently, Task Group 103 of the International Commission on Radiological Protection completed the development of new adult male and female mesh-type reference computational phantoms, which are planned for use in future International Commission on ...
Y. Yeom, M. Han, Chansoo Choi, Haegin Han, B. Shin, T. Furuta, Chan Hyeong Kim   +6 more
semanticscholar   +1 more source

WE-D-303-00: Computational Phantoms

Medical Physics, 2015
Modern medical physics deals with complex problems such as 4D radiation therapy and imaging quality optimization. Such problems involve a large number of radiological parameters, and anatomical and physiological breathing patterns. A major challenge is how to develop, test, evaluate and compare various new imaging and treatment techniques, which often ...
Jing Cai, John Lewis
openaire   +1 more source

Designing Phantoms for Industrial Computed Tomography

2011 First ACIS International Symposium on Software and Network Engineering, 2011
The increasing use of computed tomography (CT) as a diagnostic tool creates the need for an efficient means of evaluating the performance of the CT systems now in use. Usually the metal products have the defects during manufacturing and are inevitable.
In-Sung Cho, Seung-Mok Yoo, Chae-Ho Lim, Jeong-Ho Hwang, Jin-Seok Yang, Kyoonyun Kim   +5 more
openaire   +1 more source

Computer Tomography Phantom Applications

2013
Computed tomography (CT) using X-rays was the first imaging modality used in Medicine associating computer processing with data obtained from patients’ X-ray transmission. This innovative technique developed during the second half of the 1960s and available for clinical use in 1972 has brought a new vision about the contrast details of the patient’s ...
openaire   +1 more source

Computed tomography unmasks a phantom tumour

International Journal of Cardiology, 2011
We describe a patient with left sided congestive heart failure and a round-shaped mass on the chest X-ray. Using computed tomography, the mass is diagnosed as a phantom tumour consisting of loculated effusion in the interlobular fissure that vanishes after treatment for heart failure is initiated.
Timo Baks, Marc C. Kock, Marcel J.M. Kofflard   +2 more
openaire   +1 more source

Dose estimation for cone-beam computed tomography in image-guided radiation therapy for pelvic cancer using adult mesh-type reference computational phantoms

Radiological Physics and Technology, 2023
Ceyda Cumur, T. Fujibuchi, Hiroyuki Arakawa, Keisuke Hamada   +3 more
semanticscholar   +1 more source

Applications of Computational Phantoms

2013
Significant progress has been made in the development of computational anthropomorphic phantoms over the last few decades. A historical overview and discussion on computational phantoms can be found in Chap. 12. Such progress would not have been possible without the availability of large amounts of affordable random access memory (RAM)
openaire   +1 more source

A new calibration phantom for quantitative computed tomography

Medical Physics, 1987
We report on a new calibration phantom for quantitative computed tomography which has been improved with respect to reference materials and geometrical setup. Instead of liquid calibration solutions, we use polyethylene‐based water‐ and bone‐equivalent plastics. The size of the phantom is considerably reduced by using only two samples.
W A, Kalender, C, Suess
openaire   +2 more sources

A simple test phantom for stereotactic computed tomography

Medical Physics, 1993
An easy‐to‐use phantom has been constructed for checking the accuracy of a stereotactic computed tomography localization system. This phantom has been used on a commercially available stereotactic radiosurgery system. With this system, the phantom reference point, whose location is established by means of a precision measuring implement, can be ...
K E, Ekstrand, W W, Olds, C L, Branch
openaire   +2 more sources

New low‐contrast resolution phantoms for computed tomography

Medical Physics, 1999
Computed tomography (CT) has been established as a major imaging modality in diagnostic radiology. Accordingly, acceptance testing and quality control of CT scanners is of great importance. While most procedures and phantoms for testing are widely accepted, there is still discussion and uncertainty about low‐contrast (LC) sensitivity.
C, Suess, W A, Kalender, J M, Coman
openaire   +2 more sources