+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Evaluation of the panoramic image formation in different anatomic positions



Evaluation of the panoramic image formation in different anatomic positions



Brazilian Dental Journal 21(5): 458-462



The aim of this study was to determine size, shape and position of the image layer by evaluation of the radiographic image formation in different anatomic positions. A customized phantom was made of a rectangular acrylic plate measuring 14 cm² and 0.3 cm thick, with holes spaced 0.5 cm away and arranged in rows and columns. Each column was separately filled with 0.315 cm diameter metal spheres to acquire panoramic radiographs using the Orthopantomograph OP 100 unit. The customized phantom was placed on the mental support of the device, with its top surface kept parallel to the horizontal plane, and was radiographed at three different heights from the horizontal plane, i.e., the orbital, occlusal and mandibular symphysis levels. The images of the spheres were measured using a digital caliper to locate the image layer. The recorded data were analyzed statistically by the Student'-t test, ANOVA and Tukey' test (?=0.05). When the image size of spheres in horizontal and vertical axes were compared, statistically significant differences (p<0.05) were observed in all areas, portions of the image layer and heights of horizontal plane evaluated. In the middle portion of the image layer, differences in the image size of spheres were observed only along the horizontal axis (p<0.05), whereas no differences were observed along the vertical axis (p>0.05). The methodology used in this determined the precise size, shape and position of the image layer and differences in magnification were observed in both the horizontal and vertical axes.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 053086700

Download citation: RISBibTeXText

PMID: 21180804


Related references

Evaluation of the panoramic image formation in different anatomic positions. Brazilian Dental Journal 21(5): 458-462, 2010

Evaluation of the accuracy of linear and angular measurements on panoramic radiographs taken at different positions. Imaging Science in Dentistry 43(3): 191-196, 2013

Formation of a panoramic tomographic image. Biomedical Engineering 14(1): 14-16, 1980

Image guided surgery system including a unit for transforming patient positions to image positions. Official Gazette of the United States Patent & Trademark Office Patents 1222(2), 02-AUG-99, 1999

The evaluation of vertical heights of maxillary and mandibular bones and the location of anatomic landmarks in panoramic radiographs of edentulous patients for implant dentistry. Journal of Oral Rehabilitation 32(10): 741-746, 2005

Clinical evaluation of dose reduction on image quality of panoramic radiographs. Journal of Contemporary Dental Practice 9(5): 34-41, 2008

Development of a new ball-type phantom for evaluation of the image layer of panoramic radiography. Imaging Science in Dentistry 48(4): 255-259, 2018

Clinical image quality evaluation for panoramic radiography in Korean dental clinics. Imaging Science in Dentistry 42(3): 183-190, 2012

A study for determination of various positioning errors in digital panoramic radiography for evaluation of diagnostic image quality. Indian Journal of Dental Research 28(6): 666-670, 2018

Marginal bone in periodontal disease: an evaluation of image quality in panoramic and intra-oral radiography. Dento Maxillo Facial Radiology 18(3): 105-112, 1989

Can adaptive post-processing of storage phosphor plate panoramic radiographs provide better image quality? A comparison of anatomical image quality of panoramic radiographs before and after adaptive processing. Acta Odontologica Scandinavica 77(5): 328-333, 2019

An evaluation of image quality for the assessment of the marginal bone level in panoramic radiography. A comparison of radiographs from different dental clinics. SwedishDentalJournal17(1-2):9, 1993

Quantitative evaluation of alveolar bone resorption on dental panoramic radiographs by standardized dentition image transformation and probability estimation. Conference Proceedings 2016: 1038-1041, 2016

The loss of image quality in digital panoramic radiography using image compression. Farman, A G, Ruprecht, A, Gibbs, S J, Scarfe, W C International Congress Series; IADMFR/CMI'97 Advances in maxillofacial imaging: 299-305, 1997

Japanese tooth positions and their relation to panoramic radiography. Oral Surgery Oral Medicine and Oral Pathology 41(6): 797-802, 1976