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2003 Volume 59 Issue 1 Pages
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2003 Volume 59 Issue 1 Pages
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Article type: Index
2003 Volume 59 Issue 1 Pages
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2003 Volume 59 Issue 1 Pages
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[in Japanese]
Article type: Article
2003 Volume 59 Issue 1 Pages
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Article type: Appendix
2003 Volume 59 Issue 1 Pages
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Article type: Appendix
2003 Volume 59 Issue 1 Pages
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Article type: Appendix
2003 Volume 59 Issue 1 Pages
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2003 Volume 59 Issue 1 Pages
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Article type: Appendix
2003 Volume 59 Issue 1 Pages
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2003 Volume 59 Issue 1 Pages
1-20
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NORIYUKI HASHIMOTO
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2003 Volume 59 Issue 1 Pages
21-28
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YOICHI EGUCHI
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2003 Volume 59 Issue 1 Pages
29-30
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JUNICHI KINOSHITA
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2003 Volume 59 Issue 1 Pages
30-33
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OSAMU WAKAMATSU
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2003 Volume 59 Issue 1 Pages
34-36
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YOSHIYUKI EBIHARA
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2003 Volume 59 Issue 1 Pages
36-39
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HIROYUKI KOBAYASHI
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2003 Volume 59 Issue 1 Pages
40-41
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NACHIKO UCHIYAMA
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2003 Volume 59 Issue 1 Pages
42-43
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FUSAO IKAWA
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2003 Volume 59 Issue 1 Pages
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TSUKASA DOI
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2003 Volume 59 Issue 1 Pages
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TOSHIHIRO OGURA, [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2003 Volume 59 Issue 1 Pages
55-59
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HIROSHI WATABE
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2003 Volume 59 Issue 1 Pages
60-65
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
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2003 Volume 59 Issue 1 Pages
66-84
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MOTOHIRO NISHITANI, [in Japanese], [in Japanese], [in Japanese], [in J ...
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2003 Volume 59 Issue 1 Pages
85-88
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HIROSHI FUJITA, [in Japanese], [in Japanese], [in Japanese], [in Japan ...
Article type: Article
2003 Volume 59 Issue 1 Pages
89-96
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NOBUHIRO ODA, [in Japanese], [in Japanese], [in Japanese], [in Japanes ...
Article type: Article
2003 Volume 59 Issue 1 Pages
97-116
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MASAHARU AMANO
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2003 Volume 59 Issue 1 Pages
117-120
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MASAFUMI AMANO, HIROMU NISHITANI, SHINGO KOHNO, MOTOKATSU YASUTOMO, HI ...
Article type: Article
2003 Volume 59 Issue 1 Pages
121-129
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Various types of X-ray examinations are currently being carried out for the purpose of diagnosis. However, since dose limits for contamination by medical examinations have not been set, management of dose measurements and contamination records is called for. With increasing use of the IVR technique, reports of radiation injury and the symptoms associated with it have become more common. To advance our understanding of this situation and to reduce contamination, it is necessary to carry out contamination management. The reflection film on which colors are formed by irradiating X-rays has recently come into use. Dose measurement is possible with the use of this film, and, because effective results can be obtained as a result of performing fundamental examinations, the film actually provides dose measurements for the IVR technique. Another benefit is that maximum patient skin dose and dose distribution can be determined in addition to dose measurement. Moreover, since various methods were examined in this study, the method of dose evaluation is also reported for those wishing to employ it in the clinical setting.
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SADAMITSU NISHIHARA, AKIKO HARADA, MASASHI TAKAHASHI, MASAHIRO KOIKE, ...
Article type: Article
2003 Volume 59 Issue 1 Pages
130-135
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To increase the accuracy of the visual evaluation method, we studied the significance of the two-sample preference test using the two-visit method, as proposed by Ferris. Advantages of this method include not only its ability to estimate whether the image quality of the sample is statistically the same but also its ability to distinguish the difference between samples more clearly than when using the conventional two-sample preference test or paired-comparison method. However, a disadvantage is that this method involves two observations of the same sample. When using chest images, even if a difference between the samples is not recognizable by the conventional method, a significant difference can be elicited with this method. The data obtained by this method can be evaluated with the paired-comparison method, so some samples may be ranked as well. Therefore, we verified that the two-sample preference test, which Ferris formulated, is useful in visual evaluations.
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TOSHIYA NASADA, SHINICHI HIRAYAMA, MASAO TANOOKA, TOMOKO FUJITA, TOSHI ...
Article type: Article
2003 Volume 59 Issue 1 Pages
136-142
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In multi-slice CT, the scanning center of each line multiple-row detector array is shifted in the Y-axis direction by the tilting of the gantry. Correction of this effect is necessary when CT images are reconstructed. Correction of table feed is necessary as well. These corrections are possible with the Somatom Plus4 Volume Zoom. The use of multi-planar reconstruction(MPR)images has been increasing rapidly in the area of clinical diagnosis. Therefore, we examined the influence of MPR images according to gantry tilt. For each gantry tilt, the spatial resolution of MPR images was almost the same even though scanning pitch was changed. When the gantry was tilted, the full width at half maximum(FWHM)of the section sensitivity profile(SSP)was about 10% to 20% wider than that when the gantry was not tilted. The spatial resolution of MPR images is more affected by whether or not the gantry is tilted than by the angle of tilt. Gantry tilt correction is useful to obtain images without artifact for metal and artificial teeth; however, deterioration in spiral resolution cannot be avoided.
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Article type: Appendix
2003 Volume 59 Issue 1 Pages
143-144
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Article type: Appendix
2003 Volume 59 Issue 1 Pages
145-149
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Article type: Appendix
2003 Volume 59 Issue 1 Pages
150-151
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2003 Volume 59 Issue 1 Pages
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Article type: Appendix
2003 Volume 59 Issue 1 Pages
152-153
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Article type: Cover
2003 Volume 59 Issue 1 Pages
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