title: Evaluating the performance of a MOSFET dosimeter at diagnostic X-ray energies for interventional radiology.
abstract: For reducing the risk of skin injury during interventional radiology (IR) procedures, it has been suggested that physicians track patients' exposure doses. The metal-oxide semiconductor field effect transistor (MOSFET) dosimeter is designed to measure patient exposure dose during radiotherapy applications at megavoltage photon energies. Our purpose in this study was to evaluate the feasibility of using a MOSFET dosimeter (OneDose system) to measure patients' skin dose during exposure to diagnostic X-ray energies used in IR. The response of the OneDose system was almost constant at diagnostic X-ray energies, although the sensitivity was higher than that at megavoltage photon energies. We found that the angular dependence was minimal at diagnostic X-ray energies. The OneDose is almost invisible on X-ray images at diagnostic energies. Furthermore, the OneDose is easy to handle. The OneDose sensor performs well at diagnostic X-ray energies, although real-time measurements are not feasible. Thus, the OneDose system may prove useful in measuring patient exposure dose during IR.
authors.affiliation: Department of Radiological Technology, School of Health Sciences, Faculty of Medicine, Tohoku University, Aoba-ku, Sendai, Japan. chida@mail.tains.tohoku.ac.jp
authors.forename: Koichi
authors.initials: K
authors.lastname: Chida
authors.forename: Youhei
authors.initials: Y
authors.lastname: Inaba
authors.forename: Hanako
authors.initials: H
authors.lastname: Masuyama
authors.forename: Isao
authors.initials: I
authors.lastname: Yanagawa
authors.forename: Issei
authors.initials: I
authors.lastname: Mori
authors.forename: Haruo
authors.initials: H
authors.lastname: Saito
authors.forename: Shin
authors.initials: S
authors.lastname: Maruoka
authors.forename: Masayuki
authors.initials: M
authors.lastname: Zuguchi
mesh_terms: D005240:Feasibility Studies; D008670:Metals / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D011829:Radiation Dosage; D015641:Radiography, Interventional; D011874:Radiometry / Q000379:methods*; D012867:Skin / Q000528:radiation effects; D014057:Tomography, X-Ray Computed; D014173:Transistors, Electronic
chemical_list: D008670:Metals; D010087:Oxides
references.citation: Cathet Cardiovasc Diagn. 1998 Apr;43(4):367-70; discussion 371
references.pmid: 9554759
references.citation: Int J Radiat Oncol Biol Phys. 2005 Apr 1;61(5):1603-6
references.pmid: 15817369
references.citation: Catheter Cardiovasc Interv. 2006 Aug;68(2):236-41
references.pmid: 16830342
references.citation: J Am Coll Cardiol. 2004 Dec 7;44(11):2259-82
references.pmid: 15582335
references.citation: Phys Med Biol. 2004 Sep 7;49(17):4031-48
references.pmid: 15470921
references.citation: Acta Radiol. 2007 Oct;48(8):846-50
references.pmid: 17924214
references.citation: AJR Am J Roentgenol. 2006 Mar;186(3):774-8
references.pmid: 16498105
references.citation: Radiol Phys Technol. 2008 Jan;1(1):55-61
references.pmid: 20821164
references.citation: AJR Am J Roentgenol. 2007 Oct;189(4):W224-7
references.pmid: 17885036
references.citation: AJR Am J Roentgenol. 2004 Oct;183(4):1111-4
references.pmid: 15385315
references.citation: N Engl J Med. 2004 Jun 17;350(25):e23
references.pmid: 15201428