Swallowing computed tomography: Dose estimation in a phantom study conducted at various patient reclining angles

Masanao Kobayashi, Yasuki Asada, Kosuke Matsubara, Kazuyuki Minami, Shouichi Suzuki, Yuta Matsunaga, Tomonobu Haba, Ai Kawaguchi, Tomihiko Daioku, Hiroshi Toyama, Ryoichi Kato

研究成果: Article

抄録

Swallowing computed tomography (SCT) is a relatively new technique for the morphological and kinematic analyses of swallowing. However, no optimal scan protocols are available till date. We conducted the present SCT study to estimate the patient dose at various patient reclining positions. A RANDO phantom with a thermoluminescent dosemeter was placed on a hard Table board in a semi-reclining position at the centre and off-centre. According to predetermined scan protocols, irradiation was performed to acquire scanograms at reclining angles of 55° and 65°. The effective dose was the lowest at the centre 45° (3.8 mSv) reclining angle. Comparison between the off-centre (4.6 mSv at 55°, 6.8 mSv at 65°) and centre (4.5 mSv, 5.8 mSv) values suggested that the off-centre position is undesirable with regard to the patient dose. Accordingly, we believe that SCT methods must be revised on the basis of these factors.

元の言語English
記事番号ncx078
ページ(範囲)87-94
ページ数8
ジャーナルRadiation protection dosimetry
178
発行部数1
DOI
出版物ステータスPublished - 01-01-2018

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Deglutition
tomography
Tomography
dosage
Biomechanical Phenomena
kinematics
irradiation
estimates

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

これを引用

Kobayashi, Masanao ; Asada, Yasuki ; Matsubara, Kosuke ; Minami, Kazuyuki ; Suzuki, Shouichi ; Matsunaga, Yuta ; Haba, Tomonobu ; Kawaguchi, Ai ; Daioku, Tomihiko ; Toyama, Hiroshi ; Kato, Ryoichi. / Swallowing computed tomography : Dose estimation in a phantom study conducted at various patient reclining angles. :: Radiation protection dosimetry. 2018 ; 巻 178, 番号 1. pp. 87-94.
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title = "Swallowing computed tomography: Dose estimation in a phantom study conducted at various patient reclining angles",
abstract = "Swallowing computed tomography (SCT) is a relatively new technique for the morphological and kinematic analyses of swallowing. However, no optimal scan protocols are available till date. We conducted the present SCT study to estimate the patient dose at various patient reclining positions. A RANDO phantom with a thermoluminescent dosemeter was placed on a hard Table board in a semi-reclining position at the centre and off-centre. According to predetermined scan protocols, irradiation was performed to acquire scanograms at reclining angles of 55° and 65°. The effective dose was the lowest at the centre 45° (3.8 mSv) reclining angle. Comparison between the off-centre (4.6 mSv at 55°, 6.8 mSv at 65°) and centre (4.5 mSv, 5.8 mSv) values suggested that the off-centre position is undesirable with regard to the patient dose. Accordingly, we believe that SCT methods must be revised on the basis of these factors.",
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Kobayashi, M, Asada, Y, Matsubara, K, Minami, K, Suzuki, S, Matsunaga, Y, Haba, T, Kawaguchi, A, Daioku, T, Toyama, H & Kato, R 2018, 'Swallowing computed tomography: Dose estimation in a phantom study conducted at various patient reclining angles', Radiation protection dosimetry, 巻. 178, 番号 1, ncx078, pp. 87-94. https://doi.org/10.1093/rpd/ncx078

Swallowing computed tomography : Dose estimation in a phantom study conducted at various patient reclining angles. / Kobayashi, Masanao; Asada, Yasuki; Matsubara, Kosuke; Minami, Kazuyuki; Suzuki, Shouichi; Matsunaga, Yuta; Haba, Tomonobu; Kawaguchi, Ai; Daioku, Tomihiko; Toyama, Hiroshi; Kato, Ryoichi.

:: Radiation protection dosimetry, 巻 178, 番号 1, ncx078, 01.01.2018, p. 87-94.

研究成果: Article

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T2 - Dose estimation in a phantom study conducted at various patient reclining angles

AU - Kobayashi, Masanao

AU - Asada, Yasuki

AU - Matsubara, Kosuke

AU - Minami, Kazuyuki

AU - Suzuki, Shouichi

AU - Matsunaga, Yuta

AU - Haba, Tomonobu

AU - Kawaguchi, Ai

AU - Daioku, Tomihiko

AU - Toyama, Hiroshi

AU - Kato, Ryoichi

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Swallowing computed tomography (SCT) is a relatively new technique for the morphological and kinematic analyses of swallowing. However, no optimal scan protocols are available till date. We conducted the present SCT study to estimate the patient dose at various patient reclining positions. A RANDO phantom with a thermoluminescent dosemeter was placed on a hard Table board in a semi-reclining position at the centre and off-centre. According to predetermined scan protocols, irradiation was performed to acquire scanograms at reclining angles of 55° and 65°. The effective dose was the lowest at the centre 45° (3.8 mSv) reclining angle. Comparison between the off-centre (4.6 mSv at 55°, 6.8 mSv at 65°) and centre (4.5 mSv, 5.8 mSv) values suggested that the off-centre position is undesirable with regard to the patient dose. Accordingly, we believe that SCT methods must be revised on the basis of these factors.

AB - Swallowing computed tomography (SCT) is a relatively new technique for the morphological and kinematic analyses of swallowing. However, no optimal scan protocols are available till date. We conducted the present SCT study to estimate the patient dose at various patient reclining positions. A RANDO phantom with a thermoluminescent dosemeter was placed on a hard Table board in a semi-reclining position at the centre and off-centre. According to predetermined scan protocols, irradiation was performed to acquire scanograms at reclining angles of 55° and 65°. The effective dose was the lowest at the centre 45° (3.8 mSv) reclining angle. Comparison between the off-centre (4.6 mSv at 55°, 6.8 mSv at 65°) and centre (4.5 mSv, 5.8 mSv) values suggested that the off-centre position is undesirable with regard to the patient dose. Accordingly, we believe that SCT methods must be revised on the basis of these factors.

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