Zobrazeno 1 - 10
of 169
pro vyhledávání: '"D. McDavid"'
Autor:
M, Noujeim, T, Prihoda, W D, McDavid, K, Ogawa, T, Yamakawa, K, Seki, T, Okano, T, Sue, R P, Langlais
Publikováno v:
Dentomaxillofacial Radiology. 40:42-46
The purpose of the study was to compare the image generated by a classic panoramic machine equipped with a cadmium telluride sensor capable of digital tomosynthesis and special software with images produced by other popular panoramic X-ray machines u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd6f843aad98c6645233a6ddcb6144f1
https://doi.org/10.1259/dmfr/73312141
https://doi.org/10.1259/dmfr/73312141
Publikováno v:
Dentomaxillofacial Radiology. 39:323-335
Objectives: An in vitro study was performed to investigate the relationship between grey levels in dental cone beam CT (CBCT) and Hounsfield units (HU) in CBCT scanners. Methods: A phantom containing 8 different materials of known composition and den
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a74a6674176b7652f46724978f1de2dd
https://doi.org/10.1259/dmfr/19603304
https://doi.org/10.1259/dmfr/19603304
Publikováno v:
Dentomaxillofacial Radiology. 33:188-195
Objectives: To introduce and test a new tomographic technique, namely transtomography, making it possible to expose tomographic images employing the narrow beam of an advanced panoramic machine. Methods: The working principle of the new technique is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3d9a814c6de1e67c9732c6702b91c08
https://doi.org/10.1259/dmfr/55001955
https://doi.org/10.1259/dmfr/55001955
Publikováno v:
Dentomaxillofacial Radiology, 33, 6-11. British Institute of Radiology
Li, G, Sanderink, G C H, Welander, U S, McDavid, W D & Nasstrom, K 2004, ' Evaluation of endodontic files in digital radiographs before and after employing three image processing algorithms ', Dentomaxillofacial Radiology, vol. 33, pp. 6-11 . https://doi.org/10.1259/dmfr/26782200
Li, G, Sanderink, G C H, Welander, U S, McDavid, W D & Nasstrom, K 2004, ' Evaluation of endodontic files in digital radiographs before and after employing three image processing algorithms ', Dentomaxillofacial Radiology, vol. 33, pp. 6-11 . https://doi.org/10.1259/dmfr/26782200
Two digital image processing algorithms, one aimed at correction for exponential attenuation and one at correction for visual response, have been developed. The aims of the present study were to test whether digital radiographs processed with these a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fc025985f091c68e67eed34bbb6f778
https://hdl.handle.net/11245/1.233623
https://hdl.handle.net/11245/1.233623
Publikováno v:
Dentomaxillofacial Radiology. 32:372-378
Two digital image processing methods, correction for X-ray attenuation and correction for attenuation and visual response, have been developed. The aim of the present study was to compare digital radiographs before and after correction for attenuatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5940e6857a8843709cd0312fe7fca8d
https://doi.org/10.1259/dmfr/64530544
https://doi.org/10.1259/dmfr/64530544
Autor:
Masato Tatsumi, Kazutoshi Okamura, William D. McDavid, Gang Li, Ulf Welander, Shigenobu Kanda, Kazunori Yoshiura, Xie-Qi Shi, Toshiyuki Kawazu
Publikováno v:
Oral Radiology. 19:38-48
Objectives To construct and analyze perceptibility curves (PCs) according to two different approaches.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f40d0f4df86ccf03ce2f998e8bffd4cb
https://doi.org/10.1007/bf02493290
https://doi.org/10.1007/bf02493290
Publikováno v:
Oral Radiology. 19:22-27
Objective To determine technical properties for a direct digital intraoral radiographic system, F1iOX (Fimet Oy, Moninkyla, Finland).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae5ef026bae10e14212128e6a9134ffc
https://doi.org/10.1007/bf02493288
https://doi.org/10.1007/bf02493288
Publikováno v:
Dentomaxillofacial Radiology. 31:131-136
Objectives: To derive and test a method to linearize the visual response of the display of digital radiographs so that equal steps in gray levels will be perceived as equal steps in brightness. Method: A mathematical analysis was performed and expres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad00b85a85c5ea13d84fe2562932aa3c
https://doi.org/10.1038/sj.dmfr.4600663
https://doi.org/10.1038/sj.dmfr.4600663
Publikováno v:
Astronomy & Astrophysics, 383, 580-590. EDP Sciences
Polarimetric data associated with multi-parameter observational campaigns of selected bright O-type stars and their variable winds, are analysed in relation to the outcomes of the UV and optical spectroscopic studies. For the stars $\xi\,$Per and $\l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2623c061e177eca385f0cc32df530494
https://doi.org/10.1051/0004-6361:20011787
https://doi.org/10.1051/0004-6361:20011787
Publikováno v:
Dentomaxillofacial Radiology. 31:113-116
Objective: To evaluate if digital compensation for exponential attenuation and the characteristics of the human visual system improves the diagnosis of approximal caries from digital radiographs. Material and methods: Forty premolar teeth were mounte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75a2eff41c5acc4960f58763b961a37b
https://doi.org/10.1038/sj.dmfr.4600675
https://doi.org/10.1038/sj.dmfr.4600675