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Did you mean: densitometry (142069 items)

Select item 32839161.

Light sensitometry of mammography films at varying development temperatures and times

Reena Sharma, Sunil Dutt Sharma, Y. S. Mayya

J Med Phys. 2012 Jan-Mar; 37(1): 40–45. doi: 10.4103/0971-6203.92719

PMCID:: PMC3283916

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Extension of the open-source TIGRE toolbox for proton imaging

Stefanie Kaser, Thomas Bergauer, Ander Biguri, Wolfgang Birkfellner, Sepideh Hatamikia, Albert Hirtl, Christian Irmler, Benjamin Kirchmayer, Felix Ulrich-Pur

Z Med Phys. 2023 Nov; 33(4): 552–566. Published online 2022 Oct 1. doi: 10.1016/j.zemedi.2022.08.005

PMCID:: PMC10751710

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Cone‐Beam CT image contrast and attenuation‐map linearity improvement (CALI) for brain stereotactic radiosurgery procedures

SayedMasoud Hashemi, Christopher Huynh, Arjun Sahgal, William Y. Song, Håkan Nordström, Markus Eriksson, James G. Mainprize, Young Lee, Mark Ruschin

J Appl Clin Med Phys. 2018 Nov; 19(6): 200–208. Published online 2018 Oct 19. doi: 10.1002/acm2.12477

PMCID:: PMC6236823

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The impact of secondary fragments on the image quality of helium ion imaging

Lennart Volz, Pierluigi Piersimoni, Vladimir A. Bashkirov, Stephan Brons, Charles-Antoine Collins-Fekete, Robert P. Johnson, Reinhard W. Schulte, Joao Seco

Phys Med Biol. Author manuscript; available in PMC 2019 Oct 2.

Published in final edited form as: Phys Med Biol. 2018 Oct 2; 63(19): 195016. Published online 2018 Oct 2. doi: 10.1088/1361-6560/aadf25

PMCID:: PMC6380898

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A likelihood‐based particle imaging filter using prior information

Ryan Fullarton, Lennart Volz, Nikolaos Dikaios, Reinhard Schulte, Gary Royle, Philip M. Evans, Joao Seco, Charles‐Antoine Collins‐Fekete

Med Phys. 2023 Apr; 50(4): 2336–2353. Published online 2023 Feb 18. doi: 10.1002/mp.16258

PMCID:: PMC10947404

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Assessment of the dosimetric accuracies of CATPhan 504 and CIRS 062 using kV-CBCT for performing direct calculations

James Kwame Annkah, Ivan Rosenberg, Naina Hindocha, Syed Ali Moinuddin, Kate Ricketts, Abiodun Adeyemi, Gary Royle

J Med Phys. 2014 Jul-Sep; 39(3): 133–141. doi: 10.4103/0971-6203.139001

PMCID:: PMC4154180

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Evaluation of imaging performance of major image guidance systems

MF Chan, J Yang, Y Song, C Burman, P Chan, S Li

Biomed Imaging Interv J. 2011 Apr-Jun; 7(2): e11. Published online 2011 Apr 1. doi: 10.2349/biij.7.2.e11

PMCID:: PMC3265149

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Optimization of SPECT-CT Hybrid Imaging Using Iterative Image Reconstruction for Low-Dose CT: A Phantom Study

Oliver S. Grosser, Dennis Kupitz, Juri Ruf, Damian Czuczwara, Ingo G. Steffen, Christian Furth, Markus Thormann, David Loewenthal, Jens Ricke, Holger Amthauer

PLoS One. 2015; 10(9): e0138658. Published online 2015 Sep 21. doi: 10.1371/journal.pone.0138658

PMCID:: PMC4577107

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Technical Note: Volumetric computed tomography for radiotherapy simulation and treatment planning

Heather M. Young, Claire Keun Sun Park, Oi‐Wai Chau, Ting‐Yim Lee, Stewart Gaede

J Appl Clin Med Phys. 2021 Aug; 22(8): 295–302. Published online 2021 Jul 9. doi: 10.1002/acm2.13336

PMCID:: PMC8364284

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Accuracy of automatic matching of Catphan 504 phantom in cone‐beam computed tomography for tube current–exposure time product

Hui‐Su Won, Jin‐Beom Chung, Byung‐Don Choi, Jin‐Hong Park, Do‐Guwn Hwang

J Appl Clin Med Phys. 2016 Nov; 17(6): 421–428. Published online 2016 Nov 8. doi: 10.1120/jacmp.v17i6.6402

PMCID:: PMC5690535

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The accuracy of helium ion CT based particle therapy range prediction: An experimental study comparing different particle and X-ray CT modalities

L. Volz, C.-A. Collins-Fekete, E. Bär, S. Brons, C. Graeff, R. P. Johnson, A. Runz, C. Sarosiek, R. W. Schulte, J. Seco

Phys Med Biol. Author manuscript; available in PMC 2022 Nov 29.

Published in final edited form as: Phys Med Biol. 2021 Nov 29; 66(23): 10.1088/1361-6560/ac33ec. Published online 2021 Nov 29. doi: 10.1088/1361-6560/ac33ec

PMCID:: PMC8792995

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Performance evaluation of iterative reconstruction algorithms for achieving CT radiation dose reduction — a phantom study

Cristina T. Dodge, Eric P. Tamm, Dianna D. Cody, Xinming Liu, Corey T. Jensen, Wei Wei, Vikas Kundra, X. John Rong

J Appl Clin Med Phys. 2016 Mar; 17(2): 511–531. Published online 2016 Mar 8. doi: 10.1120/jacmp.v17i2.5709

PMCID:: PMC5875046

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Analyzing the Possibility of Utilizing CBCT Radiomics as an Independent Modality: A Phantom Study

Dharmendran Palani, Senthilkumar Shanmugam, Kesavan Govindaraj

Asian Pac J Cancer Prev. 2021 May; 22(5): 1383–1391. doi: 10.31557/APJCP.2021.22.5.1383

PMCID:: PMC8408395

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Implementation and experimental evaluation of Mega-voltage fan-beam CT using a linear accelerator

Hao Gong, Shengzhen Tao, Justin D. Gagneur, Wei Liu, Jiajian Shen, Cynthia H. McCollough, Yanle Hu, Shuai Leng

Radiat Oncol. 2021; 16: 139. Published online 2021 Jul 28. doi: 10.1186/s13014-021-01862-x

PMCID:: PMC8317342

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100 days with scans of the same Catphan phantom on the same CT scanner

Ellen Husby, Elisabeth D Svendsen, Hilde K Andersen, Anne Catrine T Martinsen

J Appl Clin Med Phys. 2017 Nov; 18(6): 224–231. Published online 2017 Sep 18. doi: 10.1002/acm2.12186

PMCID:: PMC5689914

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Stopping power accuracy and achievable spatial resolution of helium ion imaging using a prototype particle CT detector system

Lennart Volz, Charles-Antoine Collins-Fekete, Pierluigi Piersimoni, Robert P. Johnson, Vladimir Bashkirov, Reinhard Schulte, Joao Seco

Curr Dir Biomed Eng. Author manuscript; available in PMC 2022 Oct 17.

Published in final edited form as: Curr Dir Biomed Eng. 2017 Sep; 3(2): 401–404. Published online 2017 Sep 7. doi: 10.1515/cdbme-2017-0084

PMCID:: PMC9576402

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Performance Evaluation of a Multichannel All-In-One Phantom Dosimeter for Dose Measurement of Diagnostic X-ray Beam

Hyesu Jeon, Wook Jae Yoo, Sang Hun Shin, Guwon Kwon, Mingeon Kim, Hye Jin Kim, Young Beom Song, Kyoung Won Jang, Won Sik Youn, Bongsoo Lee

Sensors (Basel) 2015 Nov; 15(11): 28490–28501. Published online 2015 Nov 11. doi: 10.3390/s151128490

PMCID:: PMC4701291

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Evaluation of gantry speed on image quality and imaging dose for 4D cone-beam CT acquisition

Andrew P. Santoso, Kwang H. Song, Yujiao Qin, Stephen J. Gardner, Chang Liu, Indrin J. Chetty, Benjamin Movsas, Munther Ajlouni, Ning Wen

Radiat Oncol. 2016; 11: 98. Published online 2016 Jul 29. doi: 10.1186/s13014-016-0677-8

PMCID:: PMC4966562

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Select item 571452019.

Physical characterization of a new CT iterative reconstruction method operating in sinogram space

Caterina Ghetti, Francesca Palleri, Giulio Serreli, Ornella Ortenzia, Livia Ruffini

J Appl Clin Med Phys. 2013 Jul; 14(4): 263–271. Published online 2013 Jul 8. doi: 10.1120/jacmp.v14i4.4347

PMCID:: PMC5714520

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Select item 689730520.

Dynamic fluence field modulation in computed tomography using multiple aperture devices

Grace J Gang, Andrew Mao, Wenying Wang, Jeffrey H Siewerdsen, Aswin Mathews, Satomi Kawamoto, Reuven Levinson, J Webster Stayman

Phys Med Biol. Author manuscript; available in PMC 2020 May 21.

Published in final edited form as: Phys Med Biol. 2019 May 21; 64(10): 105024. Published online 2019 May 21. doi: 10.1088/1361-6560/ab155e

PMCID:: PMC6897305

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PMC Images search for sensitometry

Fig 5CNR of different sensitometry samples of the Catphan® phantom.

CNR of four different sensitometry samples of head geometry (Catphan^® phantom, top row A-D) and of the body geometry (Catphan^® phantom with additional annulus, bottom row, E-H) for FBP and ASIR reconstructions. The CNRs were examined for Teflon (A, E), Acrylic (B, F), LDPE (C, G), and air (D, H). Due to the definition of the CNR, the slopes of LDPE and air are negative.

Optimization of SPECT-CT Hybrid Imaging Using Iterative Image Reconstruction for Low-Dose CT: A Phantom Study

PLoS One. 2015;10(9):e0138658.
Fig 4HU values of different sensitometry samples of the Catphan® phantom.

Mean HU versus X-ray tube current for FBP and ASIR reconstructions within three different sensitometry samples: (A) Teflon, (B) water equivalent and (C) air. All measurements were performed with a phantom for the head geometry (standard Catphan^® phantom) and for the body geometry (Catphan^® phantom with additional annulus). The tube voltage was always U = 120 kVp.

Optimization of SPECT-CT Hybrid Imaging Using Iterative Image Reconstruction for Low-Dose CT: A Phantom Study

PLoS One. 2015;10(9):e0138658.
Figure 4

CT# linearity of the sensitometry module in CatPhan.

Cone‐Beam CT image contrast and attenuation‐map linearity improvement (CALI) for brain stereotactic radiosurgery procedures

J Appl Clin Med Phys. 2018 Nov;19(6):200-208.
Figure 8

Axial image of CATPHAN sensitometry module with ROI measurement tool. Note the radial streaks characteristic of photon starvation.

Evaluation of the quality of CT-like images obtained using a commercial flat panel detector system

Biomed Imaging Interv J. 2006 Oct-Dec;2(4):e48.