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Characterization of MOSkin detector forin vivoskin dose measurement during megavoltage radiotherapy
| Content Provider | Scilit |
|---|---|
| Author | Jong, Wei Loong Wong, Jeannie Hsiu Ding Ung, Ngie Min Ng, Kwan Hoong Ho, Gwo Fuang Cutajar, Dean L. Rosenfeld, Anatoly B. |
| Copyright Year | 2014 |
| Description | Journal: Journal of applied clinical medical physics In vivo dosimetry is important during radiotherapy to ensure the accuracy of the dose delivered to the treatment volume. A dosimeter should be characterized based on its application before it is used for in vivo dosimetry. In this study, we characterize a new MOSFET-based detector, the MOSkin detector, on surface for in vivo skin dosimetry. The advantages of the MOSkin detector are its water equivalent depth of measurement of 0.07 mm, small physical size with submicron dosimetric volume, and the ability to provide real-time readout. A MOSkin detector was calibrated and the reproducibility, linearity, and response over a large dose range to different threshold voltages were determined. Surface dose on solid water phantom was measured using MOSkin detector and compared with Markus ionization chamber and GAFCHROMIC EBT2 film measurements. Dependence in the response of the MOSkin detector on the surface of solid water phantom was also tested for different (i) source to surface distances (SSDs); (ii) field sizes; (iii) surface dose; (iv) radiation incident angles; and (v) wedges. The MOSkin detector showed excellent reproducibility and linearity for dose range of 50 cGy to 300 cGy. The MOSkin detector showed reliable response to different SSDs, field sizes, surface, radiation incident angles, and wedges. The MOSkin detector is suitable for in vivo skin dosimetry. PACS number: 87.55.Qr |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5711095/pdf |
| Ending Page | 132 |
| Page Count | 13 |
| Starting Page | 120 |
| e-ISSN | 15269914 |
| DOI | 10.1120/jacmp.v15i5.4869 |
| Journal | Journal of applied clinical medical physics |
| Issue Number | 5 |
| Volume Number | 15 |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2014-09-08 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of applied clinical medical physics Radiology, Nuclear Medicine and Imaging in Vivo Dosimetry Quality Assurance (qa) |
| Content Type | Text |
| Resource Type | Article |
