PMID- 20841460
OWN - NLM
STAT- MEDLINE
DCOM- 20101130
LR  - 20220331
IS  - 0250-832X (Print)
IS  - 1476-542X (Electronic)
IS  - 0250-832X (Linking)
VI  - 39
IP  - 7
DP  - 2010 Oct
TI  - Perception of anatomical structures in digitally filtered and conventional 
      panoramic radiographs: a clinical evaluation.
PG  - 424-30
LID - 10.1259/dmfr/30570374 [doi]
AB  - OBJECTIVES: The aims of the study were to compare subjective image quality of 
      clinical images obtained with a storage phosphor plate (SPP)-based digital and 
      conventional film-based panoramic system for the visualization of various 
      anatomical structures and to evaluate the effect of various processing algorithms 
      on image interpretation. METHODS: Panoramic radiographs were taken in 42 patients 
      both with film and with a SPP system. SPP images were treated with shadow, 
      sharpen, negative, greyscale sigma and greyscale exponential filters. Four 
      observers subjectively evaluated films and unfiltered and filtered SPP images for 
      the visibility of anatomical structures with various radiodensities as well as 
      for overall image quality on a three-point rating scale. The statistical methods 
      used were Kruskal-Wallis, odds ratio analysis and Cohen's kappa. RESULTS: No 
      statistically significant difference was found between film and unfiltered 
      digital images except for low-contrast structures (P > 0.05). Film images were 
      preferred for the visibility of low-contrast structures (P < 0.05). Best overall 
      image quality was obtained with sharpened images (P < 0.05) followed by films and 
      unfiltered digital images. Among all filtered images, sharpened ones received the 
      highest ratings for the visibility of all anatomical structures (P < 0.05). The 
      intra- and interobserver agreement ranged between moderate and substantial and 
      between fair and moderate, respectively. CONCLUSIONS: Film and unfiltered 
      SPP-based panoramic images performed equally well in terms of overall quality; 
      however, films were best for the perception of low-contrast structures. The 
      sharpening filter may be recommended for enhancing SPP panoramic images to 
      improve the visual perception of most of the anatomical structures as well as 
      overall quality.
FAU - Baksi, B G
AU  - Baksi BG
AD  - Department of Oral Diagnosis & Radiology, School of Dentistry, Ege University, 
      Turkey.
FAU - Alpoz, E
AU  - Alpoz E
FAU - Sogur, E
AU  - Sogur E
FAU - Mert, A
AU  - Mert A
LA  - eng
PT  - Comparative Study
PT  - Evaluation Study
PT  - Journal Article
PL  - England
TA  - Dentomaxillofac Radiol
JT  - Dento maxillo facial radiology
JID - 7609576
MH  - Female
MH  - Filtration/instrumentation
MH  - Humans
MH  - Jaw/*diagnostic imaging
MH  - Male
MH  - Observer Variation
MH  - Odds Ratio
MH  - Radiographic Image Enhancement
MH  - Radiography, Dental, Digital/*instrumentation
MH  - Radiography, Panoramic/*methods
MH  - Statistics, Nonparametric
PMC - PMC3520188
EDAT- 2010/09/16 06:00
MHDA- 2010/12/14 06:00
PMCR- 2011/10/01
CRDT- 2010/09/16 06:00
PHST- 2010/09/16 06:00 [entrez]
PHST- 2010/09/16 06:00 [pubmed]
PHST- 2010/12/14 06:00 [medline]
PHST- 2011/10/01 00:00 [pmc-release]
AID - 39/7/424 [pii]
AID - D9081 [pii]
AID - 10.1259/dmfr/30570374 [doi]
PST - ppublish
SO  - Dentomaxillofac Radiol. 2010 Oct;39(7):424-30. doi: 10.1259/dmfr/30570374.