Abstract
Objectives: To determine the dose response function for the Digora® (Soredex Orion Corporation, Helsinki, Finland) storage phosphor system for intra-oral radiography. Methods: Specially designed software provided by the manufacturer was used to register data from the pre-scanning that takes place prior to readout. These data contain information about the signal from the photomultiplier and the amplification that forms the basis for the AD conversion to 8 bit image data. Dose response functions were determined for different calibration settings and also combined into one single function. Results: The dose response function is linear irrespective of calibration. The gray levels of the final radiographs are directly proportional to the amplified signal. The Digora® does not fully compensate for exposure differences. Increased exposure results in slightly darker radiographs. Conclusions: Since the gray levels of the final radiographs are directly proportional to the amplified signal, the gray levels may be used as a relative measure of the exposure in the Digora® system provided that they are subtracted from the maximum value of 255.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 272-276 |
| Number of pages | 5 |
| Journal | Dentomaxillofacial Radiology |
| Volume | 28 |
| Issue number | 5 |
| State | Published - 1999 |
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Keywords
- Digital radiography, dental
- Radiography, dental
- Technology, radiologic
ASJC Scopus subject areas
- Otorhinolaryngology
- Radiology Nuclear Medicine and imaging
- Dentistry(all)
- Radiological and Ultrasound Technology
Cite this
Dose response of a storage phosphor system for intraoral radiography. / Stamatakis, H. C.; Welander, U.; McDavid, W. D.
In: Dentomaxillofacial Radiology, Vol. 28, No. 5, 1999, p. 272-276.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dose response of a storage phosphor system for intraoral radiography
AU - Stamatakis, H. C.
AU - Welander, U.
AU - McDavid, W. D.
PY - 1999
Y1 - 1999
N2 - Objectives: To determine the dose response function for the Digora® (Soredex Orion Corporation, Helsinki, Finland) storage phosphor system for intra-oral radiography. Methods: Specially designed software provided by the manufacturer was used to register data from the pre-scanning that takes place prior to readout. These data contain information about the signal from the photomultiplier and the amplification that forms the basis for the AD conversion to 8 bit image data. Dose response functions were determined for different calibration settings and also combined into one single function. Results: The dose response function is linear irrespective of calibration. The gray levels of the final radiographs are directly proportional to the amplified signal. The Digora® does not fully compensate for exposure differences. Increased exposure results in slightly darker radiographs. Conclusions: Since the gray levels of the final radiographs are directly proportional to the amplified signal, the gray levels may be used as a relative measure of the exposure in the Digora® system provided that they are subtracted from the maximum value of 255.
AB - Objectives: To determine the dose response function for the Digora® (Soredex Orion Corporation, Helsinki, Finland) storage phosphor system for intra-oral radiography. Methods: Specially designed software provided by the manufacturer was used to register data from the pre-scanning that takes place prior to readout. These data contain information about the signal from the photomultiplier and the amplification that forms the basis for the AD conversion to 8 bit image data. Dose response functions were determined for different calibration settings and also combined into one single function. Results: The dose response function is linear irrespective of calibration. The gray levels of the final radiographs are directly proportional to the amplified signal. The Digora® does not fully compensate for exposure differences. Increased exposure results in slightly darker radiographs. Conclusions: Since the gray levels of the final radiographs are directly proportional to the amplified signal, the gray levels may be used as a relative measure of the exposure in the Digora® system provided that they are subtracted from the maximum value of 255.
KW - Digital radiography, dental
KW - Radiography, dental
KW - Technology, radiologic
UR - http://www.scopus.com/inward/record.url?scp=0033187197&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033187197&partnerID=8YFLogxK
M3 - Article
C2 - 10490744
AN - SCOPUS:0033187197
VL - 28
SP - 272
EP - 276
JO - Dentomaxillofacial Radiology
JF - Dentomaxillofacial Radiology
SN - 0250-832X
IS - 5
ER -