Liz Åkesson

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Methods based on radiological, distinguishable stages of tooth formation can be used to estimate chronological age in young persons. The best precision and accuracy of these methods of age estimation is obtained when many teeth are under development and when the individual growth rate is rapid. That is during early years-in childhood. After an age of about(More)
Panoramic, bitewing and periapical radiography and probing for measurement of the marginal bone level were compared. Altogether 237 sites of 23 patients were examined. Radiographs were taken with a splint containing steel balls to allow calculation of the enlargement of the radiographs. Probing was done before and during flap surgery using the same splint.(More)
Software packages are widely used for quantification of myocardial perfusion defects. The quantification is used to assist the physician in his/her interpretation of the study. The purpose of this study was to compare the quantification of reversible perfusion defects by three different commercially available software packages. We included 50 consecutive(More)
The aim of this study was to investigate both the actual and the radiographic tooth lengths of the maxillary first molar and second premolar and the mandibular premolars in panoramic radiographs. The actual length of 64 extracted teeth was measured. Steel balls were then attached to the cusp and apex and the teeth embedded in plastic moulds. Each pair of(More)
The diagnostic image quality of panoramic radiographs originating from different clinics was examined. Two samples of 98 and 100 radiographs, respectively, were from a department of oral radiology. The radiographs of one of these samples were checked using immediate subjective analysis of the image quality before inclusion in the study whereas the(More)
Five observers assessed the panoramic and full-mouth (14 periapical and four posterior bitewing) radiographs of 20 patients each for the ability to interpret and measure the marginal bone level. The image quality of each site was classified as excellent, acceptable or unacceptable. Depiction errors affecting interpretability and measurability were also(More)
Panoramic and periapical radiography was performed on 100 patients. Five observers each registered the scores for marginal bone level, presence of bone defects and furcation involvement in the radiographs of 20 patients and the results were compared. The overall concordance in scoring the marginal bone level was high when panoramic and periapical(More)
The purpose of this study was to evaluate variability in the quantification of myocardial perfusion images obtained by a group of experienced operators using two widely used programs. The Cedars Emory quantitative analysis program (CEqual) was used to quantify the size of perfusion defects and the Cedars-Sinai quantitative gated single-photon emission(More)
  • L Akesson
  • Swedish dental journal. Supplement
  • 1991
The radiation dosage for the Orthopantomograph model OP5 was measured using two different sizes of collimators. The concordance between and accuracy of panoramic radiography and periapical and bitewing radiography was examined regarding assessment of the marginal bone level. The measurability of panoramic and periapical and bitewing radiographs was(More)
OBJECTIVE The purpose of this study was to compare magnetic resonance (MR) imaging and surgical observations of fluid in simple bone cysts. STUDY DESIGN Findings during MR imaging of 7 simple bone cysts were compared with surgical observations 1 day or 1.8 months (mean) after MR imaging. RESULTS All MR images showed cavities filled with fluid. In 2(More)