Optimisation of swallowing ct examination: Dose reduction and image quality

Masanao Kobayashi; Yasuki Asada; Tomonobu Haba; Yuta Matsunaga; Kosuke Matsubara; Kazuyuki Minami

doi:10.1093/rpd/ncz029

Optimisation of swallowing ct examination: Dose reduction and image quality

Masanao Kobayashi, Yasuki Asada, Tomonobu Haba, Yuta Matsunaga, Kosuke Matsubara, Kazuyuki Minami

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

This study sought to optimise the swallowing computed tomography (SCT) scan protocol for use with the new wide-area detector-row CT (ADCT) scanner and to estimate patient dose in terms of the organ-absorbed dose and the effective dose. The conventional ADCT (ADCT_ViSION) and the new ADCT (ADCT_GENESIS) scanner were compared using: (1) the organ-absorbed dose and the effective dose, with a phantom study, (2) the detailed organ-absorbed doses of the neck region, using a Monte Carlo simulation and (3) a relative visual quality analysis. The effective energy differed significantly between the ADCT_ViSION (50 keV) and the ADCT_GENESIS (57 keV). The effective doses were 2.9 and 1.9 mSv, respectively. Compared with the ADCT_ViSION, the absorbed dose was reduced by 34% with the ADCT_GENESIS. With the ADCT_GENESIS, the tube current could be reduced from 40 to 30 mA. With the optimised scan protocol, a further 25% dose reduction can be achieved.

Original language	English
Pages (from-to)	421-431
Number of pages	11
Journal	Radiation protection dosimetry
Volume	185
Issue number	4
DOIs	https://doi.org/10.1093/rpd/ncz029
Publication status	Published - 31-12-2019
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1093/rpd/ncz029

Cite this

@article{3ab1b39c8c744bd789eba777044af7f8,

title = "Optimisation of swallowing ct examination: Dose reduction and image quality",

abstract = "This study sought to optimise the swallowing computed tomography (SCT) scan protocol for use with the new wide-area detector-row CT (ADCT) scanner and to estimate patient dose in terms of the organ-absorbed dose and the effective dose. The conventional ADCT (ADCTViSION) and the new ADCT (ADCTGENESIS) scanner were compared using: (1) the organ-absorbed dose and the effective dose, with a phantom study, (2) the detailed organ-absorbed doses of the neck region, using a Monte Carlo simulation and (3) a relative visual quality analysis. The effective energy differed significantly between the ADCTViSION (50 keV) and the ADCTGENESIS (57 keV). The effective doses were 2.9 and 1.9 mSv, respectively. Compared with the ADCTViSION, the absorbed dose was reduced by 34% with the ADCTGENESIS. With the ADCTGENESIS, the tube current could be reduced from 40 to 30 mA. With the optimised scan protocol, a further 25% dose reduction can be achieved.",

author = "Masanao Kobayashi and Yasuki Asada and Tomonobu Haba and Yuta Matsunaga and Kosuke Matsubara and Kazuyuki Minami",

note = "Publisher Copyright: {\textcopyright} 2019 The Author(s).",

year = "2019",

month = dec,

day = "31",

doi = "10.1093/rpd/ncz029",

language = "English",

volume = "185",

pages = "421--431",

journal = "Radiation protection dosimetry",

issn = "0144-8420",

publisher = "Oxford University Press",

number = "4",

}

TY - JOUR

T1 - Optimisation of swallowing ct examination

T2 - Dose reduction and image quality

AU - Kobayashi, Masanao

AU - Asada, Yasuki

AU - Haba, Tomonobu

AU - Matsunaga, Yuta

AU - Matsubara, Kosuke

AU - Minami, Kazuyuki

PY - 2019/12/31

Y1 - 2019/12/31

N2 - This study sought to optimise the swallowing computed tomography (SCT) scan protocol for use with the new wide-area detector-row CT (ADCT) scanner and to estimate patient dose in terms of the organ-absorbed dose and the effective dose. The conventional ADCT (ADCTViSION) and the new ADCT (ADCTGENESIS) scanner were compared using: (1) the organ-absorbed dose and the effective dose, with a phantom study, (2) the detailed organ-absorbed doses of the neck region, using a Monte Carlo simulation and (3) a relative visual quality analysis. The effective energy differed significantly between the ADCTViSION (50 keV) and the ADCTGENESIS (57 keV). The effective doses were 2.9 and 1.9 mSv, respectively. Compared with the ADCTViSION, the absorbed dose was reduced by 34% with the ADCTGENESIS. With the ADCTGENESIS, the tube current could be reduced from 40 to 30 mA. With the optimised scan protocol, a further 25% dose reduction can be achieved.

AB - This study sought to optimise the swallowing computed tomography (SCT) scan protocol for use with the new wide-area detector-row CT (ADCT) scanner and to estimate patient dose in terms of the organ-absorbed dose and the effective dose. The conventional ADCT (ADCTViSION) and the new ADCT (ADCTGENESIS) scanner were compared using: (1) the organ-absorbed dose and the effective dose, with a phantom study, (2) the detailed organ-absorbed doses of the neck region, using a Monte Carlo simulation and (3) a relative visual quality analysis. The effective energy differed significantly between the ADCTViSION (50 keV) and the ADCTGENESIS (57 keV). The effective doses were 2.9 and 1.9 mSv, respectively. Compared with the ADCTViSION, the absorbed dose was reduced by 34% with the ADCTGENESIS. With the ADCTGENESIS, the tube current could be reduced from 40 to 30 mA. With the optimised scan protocol, a further 25% dose reduction can be achieved.

UR - http://www.scopus.com/inward/record.url?scp=85079322658&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85079322658&partnerID=8YFLogxK

U2 - 10.1093/rpd/ncz029

DO - 10.1093/rpd/ncz029

M3 - Article

C2 - 30916307

AN - SCOPUS:85079322658

SN - 0144-8420

VL - 185

SP - 421

EP - 431

JO - Radiation protection dosimetry

JF - Radiation protection dosimetry

IS - 4

ER -

Optimisation of swallowing ct examination: Dose reduction and image quality

Abstract

All Science Journal Classification (ASJC) codes

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this