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[in Japanese]
1994 Volume 23 Issue 6 Pages
1115
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1117-1118
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1118-1120
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1120-1121
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1121-1122
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1122-1123
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1124-1125
Published: December 15, 1994
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[in Japanese], [in Japanese]
1994 Volume 23 Issue 6 Pages
1125-1126
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1127
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1128-1129
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1129-1130
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1130-1131
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1131-1132
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1132-1133
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1133-1135
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1135-1136
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1136-1137
Published: December 15, 1994
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1137-1138
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1138-1139
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[in Japanese]
1994 Volume 23 Issue 6 Pages
1139-1140
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T HASHIMOTO
1994 Volume 23 Issue 6 Pages
1141-1148
Published: December 15, 1994
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A KAWAGUCHI
1994 Volume 23 Issue 6 Pages
1149-1155
Published: December 15, 1994
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T KUNO, Y NAGURA, S TAKAHASHI
1994 Volume 23 Issue 6 Pages
1156-1164
Published: December 15, 1994
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S TANAKA, Y SAKAI, A SUEOKA
1994 Volume 23 Issue 6 Pages
1165-1173
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T KITAMURA
1994 Volume 23 Issue 6 Pages
1174-1180
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M HIROSE
1994 Volume 23 Issue 6 Pages
1181-1187
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J TAMAN, M NAKATANI, T NANKOH, K TAKEO, S FURUYOSHI, S TAKATA, N TOMIT ...
1994 Volume 23 Issue 6 Pages
1188-1190
Published: December 15, 1994
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The amount of white speckles in the oc-ular fundus was suggested to have high potential providing a proper index for the diagnosis of dialysis-related amyloidosis (DRA), which is recognized as one of the serious complications of long-term hemodialysis. It has been reported that white speckles were observed in the ocular fundus of patients undergoing hemodialysis. They suggested that the amount of white speckles was related to the severity of DRA. Using image analysis, we have studied to evaluate the amount of white speck-les. The amount of white speckles was compared with the other clinical index of DRA. White speck-les were extracted from photographs of ocular fundus by using gray level information of green spectrum. And it was suggested that the amount of white speckles correlated with the duration of hemodialysis.
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—Mechanism of burn injury associated with electrode loops during MR scanning—
T NAKAMURA, K FUKUDA, K HAYAKAWA, K FUJIWARA, N OKUMURA, T ARIYASU, Y ...
1994 Volume 23 Issue 6 Pages
1191-1196
Published: December 15, 1994
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Reports of severe burns associated with the clinical use of MRI scanning have con-tinued to appear. However, the precise mechanism responsible for these injuries has not yet been clarified. Since MR imaging exposes the human body not only to a strong Ho magnetic field but also high-frequency RF pulses (microwave range), and since previously reported burns have occurred only in the area of attachment to monitor cables, the burns have been considered to be due to elec-tro-magnetic induction in the cables caused by the RF pulses. In the study, therefore, using conven-tional monitor cables, a variety of loops were prepared and the electromagnetic induction within them by RF pulses was checked with an oscilloscope. For a single turn loop (S=0.124m
2) and a 10-roll loop (S=1.24 m
2), the peak induced in these loops were 75 V and 45 V, respectively. When a 50 t resistance was connected to the ends of the loop to make it a closed circuit, the voltages across the 50 Ωload were 60 V and 30 V, respectively. Furthermore, even under conditions where a circuit was interrupted at the center of the loop, a similar voltage was observed at the ends of the loop. These results indicate that a simple model of electromagnetic induction in the loop of a monitor cable cannot alone explain the cause of the burns associated with MRI.
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