Translation of Dose Coefficients From ICRP 53 to ICRP 80

Moussa, Hanna; Melanson, Mark A

doi:10.1097/hp.0b013e3182758035

Cited by 2 publications

(3 citation statements)

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“…To evaluate the significance of additional doses irradiated from diapers, the estimated diaper-introduced gonadal doses were compared to internal gonadal doses from injected radioactivity. Although standard MIRD (Medical Internal Radiation Dosimetry) provides guidance to calculate organ dose from internal radioisotopes in general population [10][11][12][13][14][15][16], the absorbed fractions of infants differ from those of children and adults, not only in size but also due to the organs of infants being smaller and closer together. Specific anatomical relationship of organs and different radiopharmaceutical biokinetic in infants has to be considered while estimating effective dose and the organ-absorbed dose [24].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, it is incumbent on practitioners of pediatric nuclear medicine to have an understanding of dosimetry and radiation risk to communicate effectively with patients and families. Standard MIRD (Medical Internal Radiation Dosimetry) methods based on ICRP (the International Commission on Radiological Protection) publications provide guidance to calculate organ doses from internal radioisotopes in the general population [10][11][12][13][14][15][16]. The absorbed fractions of infants differ from those of children and adults, because the organs of infants are smaller and closer together.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of infant gonadal dose irradiated from urine-contaminated diapers during diuretic renal scintigraphy

Lu,

Kumbhar,

Liu

et al. 2023

Nuclear Medicine Communications

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Objective To estimate the gonadal doses irradiated from urine- contaminated diapers during diuretic renal scintigraphy. Methods Images of 31 patients (18 males and 13 females) with urine-contaminated diapers during 99mTc-MAG3 renal scintigraphy were analyzed. The count rate of the diapers was converted into a time-activity curve based on the calibrated factor of the gamma camera system. The cumulative activity was determined from the area under the curve. By incorporating dose per unit cumulative activity pre-calculated from Monte Carlo simulation with 0-year phantom, the gonadal dose irradiated from diaper was calculated. To assess the degree of this additionally introduced dose from diapers, the calculated gonadal dose was compared to the internal gonadal dose from injected radiotracer activity. Results The cumulative activities irradiated from urine-contaminated diapers were 1.12 E04 ± 1.29E04 MBq.s in male infants, which was nearly half of the 1.94 E04 ± 1.80E04 MBq.s (P = 0.15) in female infants. However, the absorbed doses for testes in male infants were 7.37E-01 ± 8.50E-01 mGy, which was approximately 10 times the 6.38E-02 ± 5.94E-02 mGy for ovaries in female infants (P < 0.01). The diaper-introduced dose for testes and ovaries was 91.7% and 3.9% of the gonadal doses from the injected activity in patients with normal renal function, and 99.0% and 4.3% of those in patients with abnormal renal function. Conclusion Urine-contaminated diapers introduced additional radiation doses to infant patients during 99mTc-MAG3 renal scintigraphy. The gonadal doses were of significance in male infants who had nearly double the absorbed dose for the testes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of infant gonadal dose irradiated from urine-contaminated diapers during diuretic renal scintigraphy

Lu,

Kumbhar,

Liu

et al. 2023

Nuclear Medicine Communications

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“…The average 18F-FDG PET effective dose was 6.23 mSv. The CT effective doses varied between 7.22 mSv and 27.3 mSv [12] [13] [14].…”

Section: Radiation-induced Health Riskmentioning

confidence: 99%

Strategies to Improve CT Dose Optimization for Hybrid PET/CT Imaging

Yaseen¹,

Radzi²,

Almohiy³

et al. 2021

OJMI

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Background: To evaluate whether current dose reduction strategies for the CT component of hybrid Positron Emission Tomography-Computed Tomography (PET/CT) systems could reduce patient dose with maintaining adequate image quality for PET/CT studies. Materials and Methods: Literature survey was initially based on the selection of keywords and years of publication to identify potentially relevant articles, then the further search was conducted on the authors and references from these articles. The abstract of each article was first appraised to decide whether the content was relevant to this research question. The articles were classified into five groups: studies on dosimetry, studies on radiation-induced diseases, studies on dose reduction methods for CT-based attenuation correction (CTAC), studies on dose reduction methods for CT localization, and studies on reducing the need for a full-dose diagnostic CT in PET/CT imaging. 58 peer-reviewed articles were selected and appraised and 29 articles were used to compose this literature review. Results: The published nuclear medicine and medical physics literature were reviewed. CT dose contributed 47% -81% of the total effective dose of a standard PET/CT study and was associated with radiation-induced diseases. The dose reduction techniques were extracted and divided into three categories: reducing the CT dose for attenuation correction (AC) and localization, selectively localizing CT use, and reducing the need for a full-dose diagnostic CT. Conclusion: Three strategies have been demonstrated, with high potential for reducing patient dose while maintaining an adequate CT image quality, used for CTCA localization and diagnosis, respectively.

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Translation of Dose Coefficients From ICRP 53 to ICRP 80

Cited by 2 publications

References 0 publications

Assessment of infant gonadal dose irradiated from urine-contaminated diapers during diuretic renal scintigraphy

Assessment of infant gonadal dose irradiated from urine-contaminated diapers during diuretic renal scintigraphy

Strategies to Improve CT Dose Optimization for Hybrid PET/CT Imaging

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