Low-dose whole-spine imaging using slot-scan digital radiography: a phantom study
Abstract Background Slot-scan digital radiography (SSDR) is equipped with detachable scatter grids and a variable copper filter. In this study, this function was used to obtain parameters for low-dose imaging for whole-spine imaging. Methods With the scatter grid removed and the beam-hardening (BH)...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2023-01-01
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| Series: | BMC Medical Imaging |
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| Online Access: | https://doi.org/10.1186/s12880-023-00971-1 |
| _version_ | 1811171485550641152 |
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| author | Shigeji Ichikawa Hiroe Muto Masashi Imao Takashi Nonaka Kouji Sakekawa Yasutaka Sato |
| author_facet | Shigeji Ichikawa Hiroe Muto Masashi Imao Takashi Nonaka Kouji Sakekawa Yasutaka Sato |
| author_sort | Shigeji Ichikawa |
| collection | DOAJ |
| description | Abstract Background Slot-scan digital radiography (SSDR) is equipped with detachable scatter grids and a variable copper filter. In this study, this function was used to obtain parameters for low-dose imaging for whole-spine imaging. Methods With the scatter grid removed and the beam-hardening (BH) filters (0.0, 0.1, 0.2, or 0.3 mm) inserted, the tube voltage (80, 90, 100, 110, or 120 kV) and the exposure time were adjusted to 20 different parameters that produce equivalent image quality. Slot-scan radiographs of an acrylic phantom were acquired with the set parameters, and the optimal parameters (four types) for each filter were determined using the figure of merit. For the four types of parameters obtained in the previous section, SSDR was performed on whole-spine phantoms by varying the tube current, and the parameter with the lowest radiation dose was determined by visual evaluation. Results The parameters for each filter according to the FOM results were 90 kV, 400 mA, and 2.8 ms for 0.0 mm thickness; 100 kV, 400 mA, and 2.0 ms for 0.1 mm thickness; 100 kV, 400 mA, and 2.8 ms for 0.2 mm thickness; and 110 kV, 400 mA, and 2.2 ms for 0.3 mm thickness. Visual evaluation of the varying tube currents was performed using these four parameters when the BH filter thicknesses were 0.0, 0.1, 0.2, and 0.3 mm. The entrance surface dose was 59.44 µGy at 90 kV, 125 mA, and 2.8 ms; 57.39 µGy at 100 kV, 250 mA, and 2.0 ms; 46.89 µGy at 100 kV, 250 mA, and 2.8 ms; and 39.48 µGy at 110 kV, 250 mA, and 2.2 ms, indicating that the 0.3-mm BH filter was associated with the minimum dose. Conclusion Whole-spine SSDR could reduce the dose by 79% while maintaining the image quality. |
| first_indexed | 2024-04-10T17:14:43Z |
| format | Article |
| id | doaj.art-0cef36b291124e3dbf7179a40b41eddc |
| institution | Directory Open Access Journal |
| issn | 1471-2342 |
| language | English |
| last_indexed | 2024-04-10T17:14:43Z |
| publishDate | 2023-01-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Medical Imaging |
| spelling | doaj.art-0cef36b291124e3dbf7179a40b41eddc2023-02-05T12:27:14ZengBMCBMC Medical Imaging1471-23422023-01-012311810.1186/s12880-023-00971-1Low-dose whole-spine imaging using slot-scan digital radiography: a phantom studyShigeji Ichikawa0Hiroe Muto1Masashi Imao2Takashi Nonaka3Kouji Sakekawa4Yasutaka Sato5Suzuka University of Medical Science, Graduate School of Health Science Division of Health ScienceSuzuka University of Medical Science, Graduate School of Health Science Division of Health ScienceDepartment of Radiology, Faculty of Health Science, Gunma Paz UniversityDepartment of Radiological Technology, Fussa HospitalDepartment of Radiological Technology, Fussa HospitalDepartment of Radiological Technology, Fussa HospitalAbstract Background Slot-scan digital radiography (SSDR) is equipped with detachable scatter grids and a variable copper filter. In this study, this function was used to obtain parameters for low-dose imaging for whole-spine imaging. Methods With the scatter grid removed and the beam-hardening (BH) filters (0.0, 0.1, 0.2, or 0.3 mm) inserted, the tube voltage (80, 90, 100, 110, or 120 kV) and the exposure time were adjusted to 20 different parameters that produce equivalent image quality. Slot-scan radiographs of an acrylic phantom were acquired with the set parameters, and the optimal parameters (four types) for each filter were determined using the figure of merit. For the four types of parameters obtained in the previous section, SSDR was performed on whole-spine phantoms by varying the tube current, and the parameter with the lowest radiation dose was determined by visual evaluation. Results The parameters for each filter according to the FOM results were 90 kV, 400 mA, and 2.8 ms for 0.0 mm thickness; 100 kV, 400 mA, and 2.0 ms for 0.1 mm thickness; 100 kV, 400 mA, and 2.8 ms for 0.2 mm thickness; and 110 kV, 400 mA, and 2.2 ms for 0.3 mm thickness. Visual evaluation of the varying tube currents was performed using these four parameters when the BH filter thicknesses were 0.0, 0.1, 0.2, and 0.3 mm. The entrance surface dose was 59.44 µGy at 90 kV, 125 mA, and 2.8 ms; 57.39 µGy at 100 kV, 250 mA, and 2.0 ms; 46.89 µGy at 100 kV, 250 mA, and 2.8 ms; and 39.48 µGy at 110 kV, 250 mA, and 2.2 ms, indicating that the 0.3-mm BH filter was associated with the minimum dose. Conclusion Whole-spine SSDR could reduce the dose by 79% while maintaining the image quality.https://doi.org/10.1186/s12880-023-00971-1Slot-scan technologyWhole spineRadiation doseBeam-hardening filterWhole spine radiography |
| spellingShingle | Shigeji Ichikawa Hiroe Muto Masashi Imao Takashi Nonaka Kouji Sakekawa Yasutaka Sato Low-dose whole-spine imaging using slot-scan digital radiography: a phantom study BMC Medical Imaging Slot-scan technology Whole spine Radiation dose Beam-hardening filter Whole spine radiography |
| title | Low-dose whole-spine imaging using slot-scan digital radiography: a phantom study |
| title_full | Low-dose whole-spine imaging using slot-scan digital radiography: a phantom study |
| title_fullStr | Low-dose whole-spine imaging using slot-scan digital radiography: a phantom study |
| title_full_unstemmed | Low-dose whole-spine imaging using slot-scan digital radiography: a phantom study |
| title_short | Low-dose whole-spine imaging using slot-scan digital radiography: a phantom study |
| title_sort | low dose whole spine imaging using slot scan digital radiography a phantom study |
| topic | Slot-scan technology Whole spine Radiation dose Beam-hardening filter Whole spine radiography |
| url | https://doi.org/10.1186/s12880-023-00971-1 |
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