Comparison of 3D reconstructed images between the standard-dose and the low-dose chest CT / 中国医学科学院学报
Acta Academiae Medicinae Sinicae
;
(6): 53-57, 2006.
Article
in Chinese
| WPRIM
| ID: wpr-281264
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the difference of the 3D image quality between the low-dose and the standard-dose chest CT.</p><p><b>METHODS</b>Eleven patients were randomly scanned with the standard-dose CT and 9 with the low-dose CT. Quality of the images from both groups was evaluated by different postprocessing techniques.</p><p><b>RESULTS</b>The effective tube current, total tube current, and CT dose index volume were (114.55 +/- 26.20) mAs, (1578.27 +/- 353.09) mAs, and (7.76 +/- 1.77) mGy, respectively, in the standard-dose scanning group, and were 20 mAs, (566.11 +/- 46.23) mAs, and (1.46 +/- 0.07) mGy, respectively, in the low-dose scanning group. All these indicators had significant differences between these two groups (P < 0.001). The image noises were (17.67 +/- 3.24) HU in standard-dose group and (31.61 +/- 9.42) HU in low-dose group (P < 0.001). As shown by different postprocessing techniques, the median score of the standard-dose group and the low-dose group were 4.52 and 4.78, respectively, which was not significantly different (P = 0.92).</p><p><b>CONCLUSION</b>The low-dose CT scanned with 20 mAs effective tube current can remarkably reduce the radiation dose, and provide satisfactory postprocessing images for diagnosis.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Radiation Dosage
/
Radiography, Thoracic
/
Tomography, X-Ray Computed
/
Imaging, Three-Dimensional
/
Methods
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Acta Academiae Medicinae Sinicae
Year:
2006
Type:
Article
Similar
MEDLINE
...
LILACS
LIS