38 Result(s)

Article

Modified signal-to-noise ratio in the liver using the background-to-lung activity ratio to assess image quality of whole-body ¹⁸F-fluorodeoxyglucose positron emission tomography

The signal-to-noise ratio in the liver (SNR liver) is commonly used to assess the quality of positron emission tomography (PET) images; however, it is weakly correlated with visual assessments. Conversely, the...

Shozo Yamashita, Koichi Okuda, Tetsu Nakaichi… in Radiological Physics and Technology (2023)

Article

Beads phantom for evaluating heterogeneity of SUV on ¹⁸F-FDG PET images

This study aimed to develop a dedicated phantom using acrylic beads for texture analysis and to represent heterogeneous ¹⁸F-fluorodeoxyglucose (FDG) distributions in various acquisition periods.

Koichi Okuda, Hisahiro Saito, Shozo Yamashita… in Annals of Nuclear Medicine (2022)

Article

Comparison of ¹⁸F-FDG PET/CT and ⁶⁷Ga-SPECT for the diagnosis of fever of unknown origin: a multicenter prospective study in Japan

The aim of this multicenter prospective study was to compare the sensitivity of ¹⁸F-fluorodeoxyglucose (FDG)-positron emission tomography/computed tomography (PET/CT) with that of ⁶⁷Ga single photon emission comp...

Kazuo Kubota, Noriko Tanaka, Yoko Miyata, Hiroshi Ohtsu… in Annals of Nuclear Medicine (2021)

Article

Accuracy of metabolic volume and total glycolysis among six threshold-based target segmentation algorithms

This study aimed to evaluate the accuracy of six threshold-based segmentation methods with different target-to-background ratios (TBR), images with different voxel sizes and image noise, in measuring metabolic...

Tetsu Nakaichi, Shozo Yamashita, Wataru Kawakami… in Annals of Nuclear Medicine (2020)

Article

Full report on a survey of adverse reactions to radiopharmaceuticals from 1975 to 2017 in Japan

This pharmacovigilance-based survey was aimed at determining the prevalence of, and association between, radiopharmaceuticals and adverse reactions to radiopharmaceuticals from 1975 to 2017 in Japan.

Hiroshi Matsuda, Tomoya Uehara, Hidehiko Okazawa… in Annals of Nuclear Medicine (2020)

Article

Comparison of image quality between step-and-shoot and continuous bed motion techniques in whole-body ¹⁸F-fluorodeoxyglucose positron emission tomography with the same acquisition duration

This study aimed to compare the qualities of whole-body positron emission tomography (PET) images acquired by the step-and-shoot (SS) and continuous bed motion (CBM) techniques with approximately the same acqu...

Shozo Yamashita, Haruki Yamamoto, Tetsu Nakaichi… in Annals of Nuclear Medicine (2017)

Article

Evaluation of cytological radiation damage to lymphocytes after I-131 metaiodobenzylguanidine therapy by the cytokinesis-blocked micronucleus assay

The purpose of this study was to evaluate the degree of cytological radiation damage to lymphocytes occurring after I-131 metaiodobenzylguanidine (MIBG) therapy as determined by the cytokinesis-blocked micronu...

Naoto Watanabe, Kunihiko Yokoyama, Seigo Kinuya, Hisao Tonami in Annals of Nuclear Medicine (2016)

Article

Thyroid remnant ablation using 1,110 MBq of I-131 after total thyroidectomy: regulatory considerations on release of patients after unsealed radioiodine therapy

This study was undertaken to measure the radiation exposure level of caregivers following outpatient NaI (I-131) 1,110 MBq therapy for remnant thyroid ablation after total thyroidectomy in patients with differ...

Kiyoko Kusakabe, Kunihiko Yokoyama, Koichi Ito… in Annals of Nuclear Medicine (2012)

Article

Respiratory distress caused by radioiodine therapy in patients with differentiated thyroid cancer

Respiratory distress accompanied by stridor is an uncommon complication of¹³¹I radioiodine therapy for differentiated thyroid cancer that occurs within 48 hours of treatment. This report presents three cases with...

Seigo Kinuya, Kunihiko Yokoyama, Takatoshi Michigishi… in Annals of Nuclear Medicine (2006)

Article

A case of malignant pheochromocytoma with early intense uptake and immediate rapid washout of^99mTc-tetrofosmin characterizing the overexpression of anti-apoptotic Bcl-2

Defective apoptotic program due to the overexpression of the anti-apoptotic Bcl-2 protein of the outer mitochondrial membrane may be a cause of the poor response of malignant pheochromocytoma to¹³¹I-MIBG therapy....

Shigetoshi Wakasugi, Toshiaki Kinouchi, Haruo Taniguchi… in Annals of Nuclear Medicine (2006)

Article

^99mTc-sestamibi to monitor treatment with antisense oligodeoxynucleotide complementary to MRP mRNA in human breast cancer cells

Technetium-99m sestamibi (MIBI) has been utilized to evaluate multi-drug resistance (MDR) phenomenon of malignant tumors and to predict chemotherapeutic effects on them. The current investigation examined the ...

Seigo Kinuya, **gming Bai, Kazuhiro Shiba, Kunihiko Yokoyama… in Annals of Nuclear Medicine (2006)

Article

Current abstracts of the articles published in The Japanese Journal of Nuclear Medicine

Yoichi Ishikawa, Yoshihito Funakj, Ren Iwata, Shozo Furumoto… in Annals of Nuclear Medicine (2005)

Article

In vitro detection of mdr1 mRNA in murine leukemia cells with ¹¹¹In-labeled oligonucleotide

The feasibility of intracellular mdr1 mRNA expression detection with radiolabeled antisense oligonucleotide (ODN) was investigated in the murine leukemia cell line, P388/S, and its subclonal, adriamycin-resistant...

**gming Bai, Kunihiko Yokoyama… in European Journal of Nuclear Medicine and M… (2004)

Article

Failure of radioiodine treatment in Graves’ disease intentionally caused by a patient: Suspected Munchausen syndrome

We experienced a case with Graves’ disease in which radioiodine treatment failed probably because of intentional spitting out of capsules of radioactive iodide. Chemical analysis of the substances collected fr...

Seigo Kinuya, Takatoshi Michigishi, Kenichi Nakajima… in Annals of Nuclear Medicine (2004)

Article

Improved survival of mice bearing liver metastases of colon cancer cells treated with a combination of radioimmunotherapy and antiangiogenic therapy

We attempted to determine whether the combined regimen of radioimmunotherapy (RIT) and antiangiogenic therapy would favorably affect the survival of animals bearing liver metastases of colon cancer cells. Dail...

Seigo Kinuya, Kunihiko Yokoyama… in European Journal of Nuclear Medicine and M… (2004)

Article

Multifactorial analysis on the short-term side effects occurring within 96 hour after radioiodine-131 therapy for differentiated thyroid carcinoma

This study was performed to clarify factors that might influence short-term side effects occurring within 96 hours after administration of¹³¹I for patients with thyroid carcinoma.Methods: In 71 patients with diff...

Tamotsu Kita, Kunihiko Yokoyama, Takahiro Higuchi… in Annals of Nuclear Medicine (2004)