1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Organ doses for reference adult male and female undergoing computed tomography estimated by Monte Carlo simulations
Rent:
Rent this article for
USD
10.1118/1.3544658
/content/aapm/journal/medphys/38/3/10.1118/1.3544658
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/38/3/10.1118/1.3544658

Figures

Image of FIG. 1.
FIG. 1.

3D drawing of the CT beam simulation including the fan-shaped x-ray beam and collimation cylinders. The locations of the ion chamber for beam profile measurements were also depicted by using a series of pencil ion chambers.

Image of FIG. 2.
FIG. 2.

3D frontal (left) and rear (right) views of hybrid adult (a) male and (b) female phantoms used in the Monte Carlo organ dose calculations in this study. Arms, including arm bones except the humeral head, were removed to more realistically simulate positioning of a patient during CT examination.

Image of FIG. 3.
FIG. 3.

Comparison of lateral dose profile from isocenter up to 30 cm obtained from ion chamber measurements with the values from Monte Carlo simulations for the tube potential of 120 kVp.

Image of FIG. 4.
FIG. 4.

Comparison of the organ doses obtained from the hybrid adult male phantom and the ORNL phantom using the established CT scanner model and the commercial programs, CT-EXPO and CTDOSIMETRY, for (a) head, (b) chest, and (c) abdomen/pelvis examinations for the tube potential of 120 kVp.

Image of FIG. 5.
FIG. 5.

Comparison of the positions of thyroid, adrenals, pancreas, kidneys, and testes in the rear views of (a) the adult male hybrid phantom and (b) adult male stylized phantom. The skin and muscle are made transparent to better view the internal structure. The scan ranges of chest scan (from clavicle to the middle of liver) and abdomen/pelvis scan (from the top of liver to the midfemoral head) are indicated in both phantoms.

Image of FIG. 6.
FIG. 6.

Comparison of the organ doses from the hybrid adult male phantom and the ORNL stylized phantom with the scaled organ doses from the commercial programs, CT-EXPO and CTDOSIMETRY, for (a) head, (b) chest, and (c) abdomen/pelvis examinations.

Tables

Generic image for table
TABLE I.

Comparison of (mGy/100 mA s) obtained from measurements and simulations for head and body CTDI phantoms and 10 mm collimation for the tube potentials of 80, 100, and 120 kVp.

Generic image for table
TABLE II.

Organ doses (mGy/100 mA s) obtained from the adult male hybrid phantom for head, chest, and abdomen/pelvis examinations for the tube potentials of 80, 100, and 120 kVp. Scan coverage (the distance from the top of head) and the corresponding anatomical landmarks are also included in rows 2 and 3, respectively.

Generic image for table
TABLE III.

Organ doses (mGy/100 mA s) obtained from the adult female hybrid phantom for head, chest, and abdomen/pelvis examinations for the tube potentials of 80, 100, and 120 kVp. Scan coverage (the distance from the top of head) and the corresponding anatomical landmarks are also included in rows 2 and 3, respectively.

Loading

Article metrics loading...

/content/aapm/journal/medphys/38/3/10.1118/1.3544658
2011-02-11
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Organ doses for reference adult male and female undergoing computed tomography estimated by Monte Carlo simulations
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/38/3/10.1118/1.3544658
10.1118/1.3544658
SEARCH_EXPAND_ITEM