نتایج جستجو برای: radiographic magnification

تعداد نتایج: 34506  

Journal: :European journal of orthodontics 2001
C Mason P Papadakou G J Roberts

This study compared two different radiographic techniques for localization of impacted maxillary canines: vertical parallax (from a panoramic and a maxillary anterior occlusal radiograph) and magnification (from a single panoramic radiograph). The radiographs and the information regarding the impacted canines were obtained retrospectively from records of patients treated in the Day Stay Unit of...

Journal: :Annals of the rheumatic diseases 1995
J C Buckland-Wright D G Macfarlane S A Williams R J Ward

OBJECTIVES To improve the reproducibility and accuracy of joint space width (JSW) measurement as an assessment of cartilage loss in patients with osteoarthritis (OA) of the knee by determining how precision and accuracy of JSW measurement were altered by a computerised method of measurement, correction for radiographic magnification, radiography of the knee in the standing semiflexed view, and ...

L Hafezi, M Mohebbi,

Background and aim: Considering the widespread development of implants in dental treatment plans, linear measurements on panoramic radiography are of especial importance. In the present study we investigated the effect of head misalignment up to 15° around vertical and horizontal axes on the magnification rate of digital panoramic radiography in each part of upper and lower jaws. Materia...

  The Akhal-Teke is an ancient horse originat-ing from Asia where it was used by nomadic tribes and used as a warhorse. Lameness examinations require proper interpretation of clinical and radiographic findings. Therefore, understanding of normal radiographic findings of the foot is necessary. Although the radiographic appearance of the normal foot must be understood to recognize abnormalities ...

Journal: :AJNR. American journal of neuroradiology 1983
H Gahbauer V Sturm W Schlegel O Pastyr H Scharfenberg H J Zabel G van Kaick G Netzeband K E Scheer S Schabbert

A Riechert Mundinger stereotaxic device was modified to enable artifact-free computed tomographic (CT) scanning with the stereotaxic frame attached to the patient's head. A localization system was developed allowing determination of the XYZ coordinates of the target point directly from the CT cut. Angiography was performed intraoperatively with the stereotaxic frame attached. Coronal and sagitt...

Journal: :Radiology 1986
Y Nakano K Togashi K Nishimura K Itoh I Fujisawa R Asato H Adachi H Itoh K Torizuka

We performed direct radiographic magnification (X3) using a 0.1-mm microfocal tube and computed radiography (CR) in air-barium double-contrast studies of the stomach and duodenum. To eliminate blurring of the image due to motion, we used the maximum kilovolt peak rate possible (102 kVp), the maximum milliampere second rate possible (64 mAs), the shortest possible exposure time (0.1 second), and...

Journal: :Klinische Monatsblatter fur Augenheilkunde 2008
P Kloos P Bernasconi S Estermann B Bachmann Y Rutishauser A Thölen

BACKGROUND The purpose of this study was to examine the visual outcome by measuring visual acuity (VA) and magnification requirement (MR) in patients with wet AMD after repeated intravitreal injections of ranibizumab. PATIENTS AND METHODS A total of 195 eyes were treated with repeated intravitreal injections of ranibizumab "as needed". VA (Snellen chart) and MR (SZB reading chart) at baseline...

Journal: :مجله تحقیق در علوم دندانپزشکی و فک و دهان 0
hafezi l mohebbi m

abstract background and aim: considering the widespread development of implants in dental treatment plans, linear measurements on panoramic radiography are of especial importance. in the present study we investigated the effect of head misalignment up to 15° around vertical and horizontal axes on the magnification rate of digital panoramic radiography in each part of upper and lower jaws. mater...

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