Welander, Ulf: search on Z-Library

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1

Resolution as defined by line spread and modulation transfer functions for four digital intraoral radiographic systems

Ulf Welander, William D. McDavid, Gerard C.H. Sanderink, Gunilla Tronje, Ann-Catherine Mörner, S.Brent Dove

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1994

Language:

english

File:

PDF, 954 KB

english, 1994

2

A color coding method for radiographic images

Xie-Qi Shi, Pehr Sällström, Ulf Welander

Journal:

Image and Vision Computing

Year:

2002

Language:

english

File:

PDF, 1.18 MB

english, 2002

3

Comparison of the diagnostic potential of direct digital and conventional intraoral radiography in the evaluation of peri-implant conditions

Ann-Catherine Mörner-Svalling, Gunilla Tronje, Lars G. Andersson, Ulf Welander

Journal:

Clinical Oral Implants Research

Year:

2003

Language:

english

File:

PDF, 154 KB

english, 2003

4

A three-dimensional photographic method for documentation and measurement of dental conditions

Berit Lindqvist, Ulf Welander, Roger Mähler

Journal:

Journal of Orofacial Orthopedics/Fortschritte der Kieferorthopädie

Year:

1998

Language:

english

File:

PDF, 1.87 MB

english, 1998

5

Exposure parameters in sens-a-ray direct digital radiography and their effects on diagnostic accuracy of carious lesions

Bjön Svenson, Xie-Qi Shi, Harry Stamatakis, Ulf Welander, Björn Söderfeldt, Gunilla Tronje, Kazunori Yoshiura, John Kristoffersen, Charlotte Strömberg

Journal:

Year:

1997

Language:

english

File:

PDF, 923 KB

english, 1997

6

Linear or curved display of digital radiographs: Results of a “beauty contest”

Ann-Catherine Mörner, Ulf Welander, Gunilla Tronje, William D. McDavid, Hajime Fuchihata, Osamu Tokuoka

Journal:

Year:

1998

Language:

english

File:

PDF, 660 KB

english, 1998

7

Physical properties of a system for direct acquisition of digital intraoral radiographs

Gang Li, Kazumori Yoshiura, Xie-Qi Shi, Ulf Welander, William D McDavid

Journal:

Year:

2003

Language:

english

File:

PDF, 318 KB

english, 2003

8

Analysis of different approaches to constructing perceptibility curves

Kazunori Yoshiura, Ulf Welander, Gang Li, Xie-Qi Shi, William D. McDavid, Toshiyuki Kawazu, Masato Tatsumi, Kazutoshi Okamura, Shigenobu Kanda

Journal:

Year:

2003

Language:

english

File:

PDF, 700 KB

english, 2003

9

Point spread functions for rotational panoramic radiography: An experimental test

Masaru Shiojima, Åke Bäckström, Ulf Welander, Doss McDavid, Gunilla Tronje, Munetaka Naitoh

Journal:

Year:

1992

Language:

english

File:

PDF, 670 KB

english, 1992

10

Panoramic radiography incorporating an inclined film plane

Masaru Shiojima, Ulf Welander, William D. McDavid, Gunilla Tronje

Journal:

Year:

1994

Language:

english

File:

PDF, 795 KB

english, 1994

11

Two-dimensional modulation transfer functions for rotational panoramic radiography

Åke Bäckström, Ulf Welander, W. Doss McDavid, Gunilla Tronje, Masaru Shiojima

Journal:

Year:

1990

Language:

english

File:

PDF, 918 KB

english, 1990

12

A general mathematical theory of rotational panoramic radiography incorporating non-rotational scanographic methods

Ulf Welander, Masaru Shiojima, Doss McDavid, Gunilla Tronje

Journal:

Year:

1990

Language:

english

File:

PDF, 1.31 MB

english, 1990

13

A new method for image layer analysis in rotational panoramic radiography

William D. McDavid, Ulf Welander, Charles R. Morris

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1981

Language:

english

File:

PDF, 5.93 MB

english, 1981

14

Effects of errors in film speed and beam alignment on the image layer in rotational panoramic radiography

William D. McDavid, Gunilla Tronje, Ulf Welander, Charles R. Morris

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1981

Language:

english

File:

PDF, 322 KB

english, 1981

15

The Intrex—a constant-potential x-ray unit for periapical dental radiography

William D. McDavid, Ulf Welander, Bhas K. Pillai, Charles R. Morris

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1982

Language:

english

File:

PDF, 295 KB

english, 1982

16

Blurring effects in rotational panoramic radiography

William D. McDavid, Ulf Welander, Charles R. Morris

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1982

Language:

english

File:

PDF, 422 KB

english, 1982

17

The effect of viewing conditions on the perceptibility of radiographic details

Ulf Welander, William D. McDavid, Nick M. Higgins, Charles R. Morris

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1983

Language:

english

File:

PDF, 2.48 MB

english, 1983

18

Definitions of unsharpness and layer thickness in rotational panoramic radiography

William D. McDavid, Ulf Welander, Heikka Kanerva, Gunilla Tronje, Charles R. Morris

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1984

Language:

english

File:

PDF, 1.24 MB

english, 1984

19

The central plane of the image layer determined experimentally in various rotational panoramic x-ray machines

Birgit Junfin Glass, William D. McDavid, Ulf Welander, Charles R. Morris

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1985

Language:

english

File:

PDF, 1.33 MB

english, 1985

20

Comparison of conventional dental radiographs and xeroradiographs using perceptibility curves

Dale A. Miles, William D. McDavid, Ulf Welander, Steven Hockett

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1986

Language:

english

File:

PDF, 1.04 MB

english, 1986

21

Dental and mandibular arch widths in three ethnic groups in Texas: A radiographic study

Pirkka Nummikoski, Tom Prihoda, Robert P. Langlais, William D. McDavid, Ulf Welander, Gunilla Tronje

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1988

Language:

english

File:

PDF, 1.44 MB

english, 1988

22

Nonrotational scanning in panoramic radiography

William D. McDavid, Gunilla Tronje, Ulf Welander

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1990

Language:

english

File:

PDF, 1.14 MB

english, 1990

23

Reversed layer position in rotational panoramic radiography

William D. McDavid, Gunilla Tronje, Ulf Welander

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1990

Language:

english

File:

PDF, 1.38 MB

english, 1990

24

Electronic system for digital acquisition of rotational panoramic radiographs

William D. McDavid, S. Brent Dove, Ulf Welander, Gunilla Tronje

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1991

Language:

english

File:

PDF, 1.19 MB

english, 1991

25

Preliminary evaluation of a digital system for rotational panoramic radiography

S.Brent Dove, William D. McDavid, Ulf Welander, Gunilla Tronje

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1992

Language:

english

File:

PDF, 4.17 MB

english, 1992

26

Direct digital extraoral radiography of the head and neck with a solid-state linear x-ray detector

William D. McDavid, S.Brent Dove, Ulf Welander, Gunilla Tronje

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1992

Language:

english

File:

PDF, 3.76 MB

english, 1992

27

Sens-A-Ray: A new system for direct digital intracral radiography

Per Nelvig, Kenneth Wing, Ulf Welander

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1992

Language:

english

File:

PDF, 3.07 MB

english, 1992

28

Radiographic interproximal angulations: Implications for rotational panoramic radiography

William C. Scarfe, Pirkka Nummikoski, William D. McDavid, Ulf Welander, Gunilla Tronje

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1993

Language:

english

File:

PDF, 1.23 MB

english, 1993

29

Dimensional reproduction in direct digital rotational panoramic radiography

William D. McDavid, S.Brent Dove, Ulf Welander, Gunilla Tronje

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1993

Language:

english

File:

PDF, 1.31 MB

english, 1993

30

Basic technical properties of a system for direct acquisition of digital intraoral radiographs

Ulf Welander, Per Nelvig, Gunilla Tronje, Willam D. McDavid, S.Brent Dove, Ann-Catherine Mörner, Torsten Cederlund

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1993

Language:

english

File:

PDF, 3.16 MB

english, 1993

31

Layer thickness in panoramic radiography as defined by different noise-equivalent passbands

Masaru Shiojima, Åke Bäckström, Ulf Welander, William D. McDavid, Gunilla Tronje, Munetaka Naitoh

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1993

Language:

english

File:

PDF, 740 KB

english, 1993

32

Exposure parameters and their effects on diagnostic accuracy

Björn Svenson, Ulf Welander, Göran Anneroth, Björn Söderfeldt

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1994

Language:

english

File:

PDF, 3.04 MB

english, 1994

33

Color coding of radiographic changes over time by means of image addition

Ulf Welander, Inger Eklund, Gunilla Tronje, William D. McDavid, S.Brent Dove, Roger Mähler, C.Donald Wilcox, Ann-Catherine Mörner, Afsoun Uddhammar

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1994

Language:

english

File:

PDF, 12.95 MB

english, 1994

34

A simple method for measuring MTF in direct digital intraoral radiography: Technical note

William D. McDavid, Ulf Welander, Gerard C.H. Sanderink, S.Brent Dove, Gunilla Tronje

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1994

Language:

english

File:

PDF, 418 KB

english, 1994

35

Image quality of direct digital intraoral x-ray sensors in assessing root canal length: The RadioVisioGraphy, Visualix/VIXA, Sens-A-Ray, and Flash Dent systems compared with Ektaspeed films

Gerard C.H. Sanderink, Robert Huiskens, P.F. van der Stelt, Ulf S. Welander, Stephen E. Stheeman

Journal:

Oral Surgery, Oral Medicine, Oral Pathology

Year:

1994

Language:

english

File:

PDF, 4.32 MB

english, 1994

36

Orthodontic application of color image addition to visualize differences between sequential radiographs

Stavroula Papika, Hans Ulrik Paulsen, Xie-Qi Shi, Ulf Welander, Sten Linder-Aronson

Journal:

American Journal of Orthodontics and Dentofacial Orthopedics

Year:

1999

Language:

english

File:

PDF, 85 KB

english, 1999

37

Determination of the resolution of a digital system for panoramic radiography based on CCD technology

Mihalis Mastoris, Gang Li, Ulf Welander, W.D McDavid

Journal:

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology

Year:

2004

Language:

english

File:

PDF, 246 KB

english, 2004

38

Natural regeneration of Norway spruce, Scots pine and birch under Norway spruce shelterwoods of varying densities on a mesic-dry site in southern Sweden

Urban Nilsson, Pelle Gemmel, Ulf Johansson, Matts Karlsson, Torkel Welander

Journal:

Forest Ecology and Management

Year:

2002

Language:

english

File:

PDF, 359 KB

english, 2002

39

Absolute measures of image quality for the Sens-A-Ray direct digital intraoral radiography system

Ulf Welander, William D. McDavid, Ann-Catherine Mörner, Gunilla Tronje, Osamu Tokuoka, Hajime Fuchihata, Per Nelvig, S. Brent Dove

Journal:

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology

Year:

1995

Language:

english

File:

PDF, 671 KB

english, 1995

40

Mandibular rami osteotomies and their effect on the gonial angle

Jönsson, Erik, Svartz, Knut, Welander, Ulf, Åstrand, Per

Journal:

International Journal of Oral Surgery

Year:

1981

Language:

english

File:

PDF, 1.89 MB

english, 1981

41

The Effect of Hyaluronan on Bone and Soft Tissue and Immune Response in Wound Healing

Engstrüm, Per-Erik, Shi, Xie-Qi, Tronje, Gunilla, Larsson, Anders, Welander, Ulf, Frithiof, Lars, Engstrom, Gunilla Norhagen

Journal:

Journal of Periodontology

Year:

2001

Language:

english

File:

PDF, 208 KB

english, 2001

42

Measurement accuracy of marginal bone level in digital radiographs with and without color coding

Li, Gang, Engström, Per-Erik, Welander, Ulf

Journal:

Acta Odontologica Scandinavica

Year:

2007

Language:

english

File:

PDF, 152 KB

english, 2007

43

Age estimation with the aid of tooth development: a new method based on objective measurements

Mörnstad, Håkan, Staaf, Vera, Welander, Ulf

Journal:

European Journal of Oral Sciences

Year:

1994

Language:

english

File:

PDF, 6.09 MB

english, 1994

44

Computerized measurements of the lower third molar related to chronologic age in young adults

Kullman, Leif, Martinsson, Thore, Zimmerman, Mikael, Welander, Ulf

Journal:

Acta Odontologica Scandinavica

Year:

1995

Language:

english

File:

PDF, 498 KB

english, 1995

45

Acknowledgements

Journal:

Acta Radiologica

Year:

1969

Language:

english

File:

PDF, 221 KB

english, 1969

46

Angular Measurements in Orthopantomography

Frykholm, Anders, Malmgren, Olle, Sämfors, Kjell-Arne, Welander, Ulf

Journal:

Dentomaxillofacial Radiology

Year:

1977

Language:

english

File:

PDF, 914 KB

english, 1977

47

The Relationship between the Integral Dose and the Focus to Object Distance in Dental Radiography

Welander, Ulf, Wickman, Göran

Journal:

Dentomaxillofacial Radiology

Year:

1977

Language:

english

File:

PDF, 242 KB

english, 1977

48

Upper-arm hemodialysis access in Sweden

Hedin, Ulf, Welander, Gunilla

Journal:

The Journal of Vascular Access

Year:

2017

Language:

english

File:

PDF, 1.76 MB

english, 2017

49

Perceptibility of Radiation Contrast and Image Quality in Kodak Defilux Film

Frykholm, Anders, Welander, Ulf

Journal:

Dentomaxillofacial Radiology

Year:

1975

Language:

english

File:

PDF, 1.31 MB

english, 1975

50

Editorial Communications

Welander, Docent Ulf

Journal:

Dentomaxillofacial Radiology

Year:

1977

Language:

english

File:

PDF, 46 KB

english, 1977