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Volume 26, Issue 8
Displaying 1-19 of 19 articles from this issue
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—Image Processing System—Masaomi TAKIZAWA1977Volume 26Issue 8 Pages 519-524
Published: August 15, 1977
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSA hybrid type image file and processing system are devised by the author to file and the radioisotope image processing with analog display. This system has some functions as follows;
1) Ten thousand images can be stored in 60 feets length video-tape-recorder (VTR) tape.
2) Maximum of an image on the VTR tape is within 15 sec.
3) An image display enabled by the analog memory, which has brightness more than 15 gray levels.
4) By using the analog memories, effective image processing can be done by the small computer.
5) Many signal sources can be inputted into the hybrid system.
This system can be applied many fields to both routine works and multi-purpose radioisotope image processing.View full abstractDownload PDF (6778K) -
—The Competition with Other Anions—Goro KOMINAMI, Akira YOKOYAMA, Hisashi TANAKA1977Volume 26Issue 8 Pages 525-529
Published: August 15, 1977
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSIn connection with the clinical use of TcO4- for the brain scanning, the competition of TcO4- with I-, ClO4-, and 8-anilino-1-naphthalene sulfonic acid in the binding to human serum albumin was investigated. I- and ClO4- competitively bound to HSA with TcO4-. The association constants, KI≅KClO4-≅1.0×103 l/mol, which were a little smaller than that of TcO4- reported previously, were determined by Scatchard plots and by competitive binding studies. Based upon these values, it was estimated that the shift of the equilibrium in blood by the addition of I- or ClO4- is negligible and at least this equilibrium did not affect the 99mTcO4- redistribution under physiological conditions.
The order of the K values, KI-≅KClO4--<KTcO4-, - (<KSCN-), which followed the lyotropic series was reasonable from the polarizability of those anions. Further, the binding site of 8- anilino-1-naphthalene sulfonic acid to human serum albumin, which had been regarded as a hydrophobic binding site, was found to be completely independent from the anion binding site.View full abstractDownload PDF (513K) -
Norihisa TONAMI, Hisashi BUNKO, Masami SUGIHARA, Takatoshi MICHIGISHI, ...1977Volume 26Issue 8 Pages 530-534
Published: August 15, 1977
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSFifty two patients with cold thyroid nodule demonstrated on the thyroid scan were imaged with 201Tl which were given intravenously as thallium chloride in dose of 2 mCi. Thirty nine of 52 patients were confirmed and investigated whether 201TI concentrated or not. Fourteen of 15 (93%) thyroid carcinomas, 5 of 17 (29%) thyroid adenomas, 1 of 2 adenomatous goiters and all of 5 of chronic thyroiditis were visualized as positive with 201TI. One thyroid carcinoma did not concentrate 201TI which was confirmed to have cystic degeneration. Of the 19 benign cold thyroid nodules except chronic thyroiditis 6 were positively visualized with 201TI. However, 201T1 did not accumulate in the other 13 benign nodules, 11 out of which were confirmed to have cystic degeneration. The data suggests that if the thyroid nodule is found to have negative accumulation of 201TI, malignancy can be ruled out except a small microscopical lesion.View full abstractDownload PDF (5500K) -
Hisashi BUNKO, Akira KUWAJIMA, Kinichi HISADA1977Volume 26Issue 8 Pages 535-540
Published: August 15, 1977
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSIn the differential diagnosis of enlarged cardiac silhouette on plain chest X-ray film, cardiac blood pool scan was usually performed at first. However, small amount of pericardial effusion was difficult to detect on cardiac blood pool scan and differentiation of pericardial effusion from myocardial thickening was sometimes difficult. We evaluated cardiac blood pool scan with 99mTe-HSA (human serum albumin) and gamma camera imaged on both supine and sitting position, and evaluated diagnostic efficiency of criteria for pericardial effusion of these scans.
Fifty-seven patients suspected of having pericardial effusion were included in the study: Sixteen of these patients had pericardial effusion and 2 of these 16 patients had free pleural effusion. Three patients had pleural effusion alone and excluded from the study. Of the five criteria for pericardial effusion, separation between heart and right lung activities was most frequent in both effusion (true positive, TP=100% on both supine and sitting) and no effusion (false positive, FP=18.4% on supine and 23.7% on sitting) groups. However, increased heart and right lung separation on sitting position was rather frequent in effusion group, and this finding was also thought to be typical for effusion but not for myocardial thickening. Decreased eardiohepatic separation on sitting position was frequent in no effusion group, and FP rate was decreased from 18.4% (supine) to 10.5% (sitting) . Two patients with both pericardial effusion and free pleural effusion were easily diagnosed on sitting cardiac blood pool scan. With ROC (receiver operating characteristic) curve, three criteria should be agreed on either supine or sitting scan for diagnosis of pericardial effusion, and six criteria should be agreed when both supine and sitting scans were employed for diagnosis of pericardial effusion.View full abstractDownload PDF (5135K) -
—Subtraction Image with 197HgCl2 and 99mTc-HSA Using 25 Points Weighted Average—Tadashige FUJII, Hisakata KANAI, Kenjiro HANDA, Shozo KUSAMA, Masaomi ...1977Volume 26Issue 8 Pages 541-546
Published: August 15, 1977
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSTumor imaging with 197HgCl2 and the subtraction image with 197HgCl2 and 99mTchuman serum albumin were performed for the diagnosis of lung cancer, using a scintillation camera coupling to a small digital computer. The positional pulses from the scintillation camera were fed into 4096 words memory through materix input controller, and transferred from computer to magnetic tape recorder. The tumor imaging was obtained using 197HgCl2, and patient remaining in the same position was given 99mTc-HSA for subtraction which distributed in blood pool. Matrix images of magnetic tape were fed into the small digital computer and these images were displayed on the graphic display device. The location for subtraction was selected by the cursor on the image of 99mTc-HSA, and this positional information was transferred from the graphic display device to the computer in order to calculate count ratio (subtraction ratio) between the two images. Counts on the matrix image of 99mTc-HSA were multiplied by the subtraction ratio. This normalized image was subtracted from the tumor image. By this procedure, the image quality of the subtraction image was more enhanced than that of the conventional tumor image with 197HgCl2. Especially, it seemed to be valuable for detecting the lesion in the mediastinum and hilar region so that the part of non-specific concentration of 197HgCl2 on the tumor image was erased. These images were displayed as smoothed image with 25 points weighted average in order to eliminate the noise, these images were more useful to enhance the image quality than the smoothed image with 25 points simple average.View full abstractDownload PDF (4593K) -
Akira YOSHITAKE, Iwao NAKATSUKA, Hideaki TSUNEMATSU1977Volume 26Issue 8 Pages 547-549
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
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Hisashi BUNKO, Akira KUWAJIMA, Akio KUBOTA, Kinichi HISADA1977Volume 26Issue 8 Pages 550-553
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
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Keiko IMAMURA, Chikashi SUGIYAMA, Masamichi FUJII, Yasuhito SASAKI, Ka ...1977Volume 26Issue 8 Pages 554-556
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (299K) -
—Values and Reproducibility of Commercial Control Sera—Akira KURODA, Tami YATABE, Taeko INABA, Hideo YAMADA, Masahiro IIO1977Volume 26Issue 8 Pages 557-559
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
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Hiroji NAGATA, Yoshiharu AKAZAWA1977Volume 26Issue 8 Pages 560-562
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (328K) -
Hiroji NAGATA, Yoshiharu AKAZAWA1977Volume 26Issue 8 Pages 563-565
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (332K) -
Koji TANIUCHI, Yasuaki YOSHIDA, Keiko CHIFU, Fujio HAYASHI, Masahiko M ...1977Volume 26Issue 8 Pages 566-568
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
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Hirobumi YOSHII, Kotaro FUKUI, Kenshi KATAYAMA, Hisamitsu IMUTA1977Volume 26Issue 8 Pages 569-572
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
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Kikuo MACHIDA, Yoshihiro INOUE1977Volume 26Issue 8 Pages 573-576
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
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Nobuyuki HASEBE, Yoshinori MIYOSHI1977Volume 26Issue 8 Pages 577-586
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
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Air Monitoring, (4) Measurement of Concentration of Radioactive Gases in AirMasami KISHIDA, Kozo WATANABE1977Volume 26Issue 8 Pages 587-595
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
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1977Volume 26Issue 8 Pages 595a
Published: 1977
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (32K) -
1977Volume 26Issue 8 Pages 595b
Published: 1977
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (32K) -
1977Volume 26Issue 8 Pages A1747-A1298
Published: August 15, 1977
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (3754K)
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