PMID- 34722401
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220427
IS  - 2251-7200 (Print)
IS  - 2251-7200 (Electronic)
IS  - 2251-7200 (Linking)
VI  - 11
IP  - 5
DP  - 2021 Oct
TI  - Investigation of Eye Lens Dose Estimate based on AAPM Report 293 in Head Computed 
      Tomography.
PG  - 563-572
LID - 10.31661/jbpe.v0i0.2104-1304 [doi]
AB  - BACKGROUND: Estimation of eye lens dose is important in head computed tomography 
      (CT) examination since the eye lens is a sensitive organ to ionizing radiation. 
      OBJECTIVE: The purpose of this study is to compare estimations of eye lens dose 
      in head CT examinations using local size-specific dose estimate (SSDE) based on 
      size-conversion factors of the American Association of Physicists in Medicine 
      (AAPM) Report No. 293 with those based on size-conversion factors of the AAPM 
      Report No. 220. MATERIAL AND METHODS: This experimental study is conducted on a 
      group of patients who had undergone nasopharyngeal CT examination. Due to the 
      longitudinal (z-axis) dose fluctuation, the average global SSDE and average local 
      SSDE (i.e. particular slices where the eyes are located) were investigated. All 
      estimates were compared to the measurement results using thermo-luminescent 
      dosimeters (TLDs). The estimated and measured doses were implemented for 14 
      patients undergoing nasopharyngeal CT examination. RESULTS: It was found that the 
      percentage differences of the volume CT dose index (CTDI(vol)), average global 
      SSDE based on AAPM No. 220 (SSDE(o,g)), average local SSDE based on AAPM No. 220 
      (SSDE(o,l)), average global SSDE based on AAPM No. 293 (SSDE(n,g)) and average 
      local SSDE based on AAPM No. 293 (SSDE(n,l)) against the measured TLD doses were 
      22.5, 21.7, 15.0, 9.3, and 2.1%, respectively. All comparisons between dose 
      estimates and TLD measurements gave p-values less than 0.001, except for 
      SSDE(n,l) (p-value = 0.566). CONCLUSION: SSDE based on AAPM Report No. 293 can be 
      used to accurately estimate eye lens radiation doses by performing the 
      calculations on a number of specific slices containing the eyes.
CI  - Copyright: (c) Journal of Biomedical Physics and Engineering.
FAU - Anam, Choirul
AU  - Anam C
AD  - PhD, Department of Physics, Faculty of Sciences and Mathematics, Diponegoro 
      University, Jl. Prof. Soedarto SH, Semarang 50275, Central Java, Indonesia.
FAU - Kusuma Dewi, Winda
AU  - Kusuma Dewi W
AD  - MSc, Department of Physics, Faculty of Sciences and Mathematics, Diponegoro 
      University, Jl. Prof. Soedarto SH, Semarang 50275, Central Java, Indonesia.
FAU - Masdi, Masdi
AU  - Masdi M
AD  - BSc, Department of Radiology, Prof. Margono Hospital, Purwokerto, Indonesia.
FAU - Haryanto, Freddy
AU  - Haryanto F
AD  - PhD, Department of Physics, Faculty of Mathematics and Natural Sciences, Institut 
      Teknologi Bandung Jl. Ganesha 10 Bandung 40132, Indonesia.
FAU - Fujibuchi, Toshioh
AU  - Fujibuchi T
AD  - PhD, Department of Health Sciences, Faculty of Medical Sciences, Kyushu 
      University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
FAU - Dougherty, Geoff
AU  - Dougherty G
AD  - PhD, Department of Applied Physics and Medical Imaging, California State 
      University Channel Islands, Camarillo, CA 93012, USA.
LA  - eng
PT  - Journal Article
DEP - 20211001
PL  - Iran
TA  - J Biomed Phys Eng
JT  - Journal of biomedical physics & engineering
JID - 101589641
PMC - PMC8546161
OTO - NOTNLM
OT  - Algorithms
OT  - Computed Tomography
OT  - Eye Lens Dose
OT  - Ionizing
OT  - Organ Dose
OT  - Radiation
OT  - Size-Specific Dose Estimates
OT  - X-Rays
EDAT- 2021/11/02 06:00
MHDA- 2021/11/02 06:01
PMCR- 2021/10/01
CRDT- 2021/11/01 09:25
PHST- 2021/04/09 00:00 [received]
PHST- 2021/06/22 00:00 [accepted]
PHST- 2021/11/01 09:25 [entrez]
PHST- 2021/11/02 06:00 [pubmed]
PHST- 2021/11/02 06:01 [medline]
PHST- 2021/10/01 00:00 [pmc-release]
AID - JBPE-11-5 [pii]
AID - 10.31661/jbpe.v0i0.2104-1304 [doi]
PST - epublish
SO  - J Biomed Phys Eng. 2021 Oct 1;11(5):563-572. doi: 10.31661/jbpe.v0i0.2104-1304. 
      eCollection 2021 Oct.