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A Study of High Speed Rotation SPECT Acquisition Method with Breath-hold -Comparison Between Dual-head System and Triple-head System

Autor: Teppei Yonezawa, Kazuyoshi Suga, Yona Oishi, Masahiro Koike, Hideyuki Iwanaga

Publikováno v: Japanese Journal of Radiological Technology. 65:462-469

Background: Because lung perfusion Tc-99m MAA of SPECT is generally acquired under the non-breath-hold condition, SPECT image quality is degraded for respiratory lung motion. To solve this problem, a new acquisition mode would need to be developed. W

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2318061071b77f3b16a34c8e26c4f33
https://doi.org/10.6009/jjrt.65.462

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Examination of Three-Detector High-Speed-Rotation SPECT Acquisition Under Breathhold in Body: Clinical Application of 99mTc-MAA

Autor: Yona, Oishi, Hideyuki, Iwanaga, Kazuyoshi, Suga, Ryoko, Ide, Akiyo, Shimizu, Akira, Inoue, Masahiro, Koike

Publikováno v: Japanese Journal of Radiological Technology. 62:281-288

In traditional pulmonary perfusion single photon emission computed tomography (SPECT), respiratory lung motion and cyclically varying changes in lung volume during image acquisition inherently degrade the image sharpness of ill-defined perfusion defe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfc484d09a33dae062ad046e0a3f500d
https://doi.org/10.6009/jjrt.62.281

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Study of Image Quality(contrast) and Reduction of Patient Dose by Using Heavy Metal Filters

Autor: Ken-Ichi Yoshida, Taizou Sanada, Hiroko Nishimura, Yona Oishi, Hideyuki Iwanaga, Yuichi Sano, Akiyoshi Otsuka, Kazuo Fujimoto, Ken-ichiro Yasui

Publikováno v: Japanese Journal of Radiological Technology. 58:109-114

We studied image quality (contrast) and patient dose reduction using heavy metal filters in lumbar spine and abdomen x-ray examination. Heavy metal filters used in this study are gadolinium, holmium and ytterbium and these combinations. These filters

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c78fe593c2c282f0857751c55720ef19
https://doi.org/10.6009/jjrt.kj00003111358

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Correction of liver displacement due to irregular respiration for SPECT images obtained using a multiple short-time acquisition with breath-holding technique

Autor: Katsuhiko Ueda, Shohei Kudomi, Yona Oishi, Masahiro Koike, Hideyuki Iwanaga, Yasuyuki Ueda

Publikováno v: Radiological physics and technology. 5(1)

Recently, a new method for acquiring single photon emission computed tomography (SPECT) data during breath-holding with a high-speed rotation (HSR-SPECT) technique was applied to hepatic-function scintigraphy. This technique can suppress motion artif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65216602c43e4fb81dfc0b3f5c1ae9f2
https://pubmed.ncbi.nlm.nih.gov/22038313

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[Estimation of entrance skin dose from fluoroscopy for tracking fiducial markers during real-time tumor-tracking radiotherapy-simulation with a sine wave respiration model-]

Autor: Kenichiro Yasui, Ryuji Kanzaki, Masateru Kawakubo, Yona Oishi, Taizo Sanada

Publikováno v: Nihon Hoshasen Gijutsu Gakkai zasshi. 65(4)

The real-time tumor-tracking radiotherapy system includes two sets of fluoroscopes that detect the fiducial markers in or near the tumor constantly during radiotherapy. The treatment beam is irradiated to the tumor only when fiducial markers are loca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd90df53fdfee73149a676fbad8f572c
https://pubmed.ncbi.nlm.nih.gov/19420830

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[Development of a new method of high-speed rotation multiplied projection single photon emission computed tomography of the triple-headed type: lung MAA SPECT based on phantom study]

Autor: Hideyuki Iwanaga, Yona Oishi, Kazuyoshi Suga

Publikováno v: Nihon Hoshasen Gijutsu Gakkai zasshi. 62(6)

PURPOSE A chest phantom study was conducted to evaluate the image quality of newly developed high-speed rotation multiplied projection-single photon emission computed tomography (HSRMP-SPECT) images. MATERIALS AND METHODS HSRMP-SPECT images of a ches

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7887b53eb57797dd2467d043655e202
https://pubmed.ncbi.nlm.nih.gov/16799413

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