Comparison of Adsorbed Skin Dose Received by Patients in Cone Beam Computed Tomography, Spiral and Conventional Computed Tomography Scanninng
Background and Aims: The evaluation of absorbed dose received by patients could give useful information for radiation risk estimation. This study was performed to compare the entrance skin dose received by patients in cone beam computed tomography (CBCT), conventional and spiral computed tomography...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Tehran University of Medical Sciences
2011-12-01
|
| Series: | Journal of Dental Medicine |
| Subjects: | |
| Online Access: | http://journals.tums.ac.ir/upload_files/pdf/19312.pdf |
| _version_ | 1818346750706974720 |
|---|---|
| author | Rahimi A Rostampour N Eskandarlou A Ghazi Khanlou Sani K |
| author_facet | Rahimi A Rostampour N Eskandarlou A Ghazi Khanlou Sani K |
| author_sort | Rahimi A |
| collection | DOAJ |
| description | Background and Aims: The evaluation of absorbed dose received by patients could give useful information for radiation risk estimation. This study was performed to compare the entrance skin dose received by patients in cone beam computed tomography (CBCT), conventional and spiral computed tomography (CT).Materials and Methods: In this experimental study, 81 calibrated TLD chips were used. the TLD chips were placed on facial, thyroid and end of sternum skin surface in patients referred for CT of the paranasal sinuses(3 TLD chips for each area) to estimate the absorbed dose received by central part of radiation field, thyroid and out of field areas, respectively. The data were analyzed using one-way ANOVA and Tukey tests. Results: The dose delivered to the center of irradiated field was about 0.79±0.09 mGy in CBCT technique compared with 16.31±3.71 and 18.84±4.12 mGy for spiral and conventional CT, respectively. The received dose by the out of field areas was about 54 percent of central area dose. There was statistical significant relationship between the imaging modalities and absorbed dose received by patients (P=0.016). The least absorbed dose was for CBCT and the greatest dose was for conventional CT imaging technique.Conclusion: The dose delivered to central area of irradiated field in conventional and spiral CT imaging modalities was about 24 times greater than of that in CBCT. Also, the highest received dose was for central area of radiated field and the lowest dose was for the out of field areas. |
| first_indexed | 2024-12-13T17:23:14Z |
| format | Article |
| id | doaj.art-261d40455eda4d0f8a78d2a29a0ff5c5 |
| institution | Directory Open Access Journal |
| issn | 1024-641X 2008-2444 |
| language | fas |
| last_indexed | 2024-12-13T17:23:14Z |
| publishDate | 2011-12-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Journal of Dental Medicine |
| spelling | doaj.art-261d40455eda4d0f8a78d2a29a0ff5c52022-12-21T23:37:14ZfasTehran University of Medical SciencesJournal of Dental Medicine1024-641X2008-24442011-12-01243181187Comparison of Adsorbed Skin Dose Received by Patients in Cone Beam Computed Tomography, Spiral and Conventional Computed Tomography ScanninngRahimi ARostampour NEskandarlou AGhazi Khanlou Sani KBackground and Aims: The evaluation of absorbed dose received by patients could give useful information for radiation risk estimation. This study was performed to compare the entrance skin dose received by patients in cone beam computed tomography (CBCT), conventional and spiral computed tomography (CT).Materials and Methods: In this experimental study, 81 calibrated TLD chips were used. the TLD chips were placed on facial, thyroid and end of sternum skin surface in patients referred for CT of the paranasal sinuses(3 TLD chips for each area) to estimate the absorbed dose received by central part of radiation field, thyroid and out of field areas, respectively. The data were analyzed using one-way ANOVA and Tukey tests. Results: The dose delivered to the center of irradiated field was about 0.79±0.09 mGy in CBCT technique compared with 16.31±3.71 and 18.84±4.12 mGy for spiral and conventional CT, respectively. The received dose by the out of field areas was about 54 percent of central area dose. There was statistical significant relationship between the imaging modalities and absorbed dose received by patients (P=0.016). The least absorbed dose was for CBCT and the greatest dose was for conventional CT imaging technique.Conclusion: The dose delivered to central area of irradiated field in conventional and spiral CT imaging modalities was about 24 times greater than of that in CBCT. Also, the highest received dose was for central area of radiated field and the lowest dose was for the out of field areas.http://journals.tums.ac.ir/upload_files/pdf/19312.pdfAbsorbed DoseCone Beam CTSpiral CTDosimetry |
| spellingShingle | Rahimi A Rostampour N Eskandarlou A Ghazi Khanlou Sani K Comparison of Adsorbed Skin Dose Received by Patients in Cone Beam Computed Tomography, Spiral and Conventional Computed Tomography Scanninng Journal of Dental Medicine Absorbed Dose Cone Beam CT Spiral CT Dosimetry |
| title | Comparison of Adsorbed Skin Dose Received by Patients in Cone Beam Computed Tomography, Spiral and Conventional Computed Tomography Scanninng |
| title_full | Comparison of Adsorbed Skin Dose Received by Patients in Cone Beam Computed Tomography, Spiral and Conventional Computed Tomography Scanninng |
| title_fullStr | Comparison of Adsorbed Skin Dose Received by Patients in Cone Beam Computed Tomography, Spiral and Conventional Computed Tomography Scanninng |
| title_full_unstemmed | Comparison of Adsorbed Skin Dose Received by Patients in Cone Beam Computed Tomography, Spiral and Conventional Computed Tomography Scanninng |
| title_short | Comparison of Adsorbed Skin Dose Received by Patients in Cone Beam Computed Tomography, Spiral and Conventional Computed Tomography Scanninng |
| title_sort | comparison of adsorbed skin dose received by patients in cone beam computed tomography spiral and conventional computed tomography scanninng |
| topic | Absorbed Dose Cone Beam CT Spiral CT Dosimetry |
| url | http://journals.tums.ac.ir/upload_files/pdf/19312.pdf |
| work_keys_str_mv | AT rahimia comparisonofadsorbedskindosereceivedbypatientsinconebeamcomputedtomographyspiralandconventionalcomputedtomographyscanninng AT rostampourn comparisonofadsorbedskindosereceivedbypatientsinconebeamcomputedtomographyspiralandconventionalcomputedtomographyscanninng AT eskandarloua comparisonofadsorbedskindosereceivedbypatientsinconebeamcomputedtomographyspiralandconventionalcomputedtomographyscanninng AT ghazikhanlousanik comparisonofadsorbedskindosereceivedbypatientsinconebeamcomputedtomographyspiralandconventionalcomputedtomographyscanninng |