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Dive into the research topics where Kiyoshi Basaki is active.

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Featured researches published by Kiyoshi Basaki.


Japanese Journal of Radiology | 2009

Incidence of unilateral distal vertebral artery aplasia: evaluation by combining basiparallel anatomic scanning-magnetic resonance imaging (BPAS-MRI) and magnetic resonance angiography

Kohei Morimoto; Morio Nagahata; Shuichi Ono; Hiroyuki Miura; Fumiyasu Tsushima; Hiroko Seino; Shinya Kakehata; Kiyoshi Basaki; Seiyu Uno; Yoshinao Abe

PurposeThe incidence of a unilateral aplastic distal vertebral artery (VA) has been reported as 0.2% of cases on cerebral angiography. During our daily magnetic resonance (MR) examinations, however, we frequently encounter MR angiograms (MRAs) that do not demonstrate unilateral VA. The purpose of this study was to calculate the frequency of aplastic unilateral distal VA by MR images performed for asymptomatic people.Materials and methodsOver a time span of 1 year, 237 asymptomatic people (140 men, 97 women; ages 28–67 years, mean 54.4 years) underwent brain MRI during a “brain check-up examination” in our hospital. To identify an aplastic unilateral distal VA, we retrospectively compared three-dimensional time-of-flight MRA with basiparallel anatomic scanning (BPAS)-MRI which was designed for recognition of the arterial outer contour.ResultsAplasia of the unilateral distal VA was confirmed in 11 persons (4.6%). According to our classification, hypoplastic distal VA in 12 (5.1%) and asymptomatic acquired unilateral distal VA occlusion was also proved in 2 (0.8%).ConclusionWe found that the frequency of aplastic unilateral VA was 4.6% in asymptomatic people using a combination of MRA and BPAS-MRI for assessment of an intracranial VA.


Hepatology Research | 2016

Temporal variations in stump pressure and assessment of images obtained from cone‐beam computed tomography during balloon‐occluded transarterial chemoembolization

Akihisa Kakuta; Koichi Shibutani; Shuichi Ono; Hiroyuki Miura; Fumiyasu Tsushima; Shinya Kakehata; Kiyoshi Basaki; Hiromasa Fujita; Hiroko Seino; Tamaki Fujita; Yoshihiro Takai

Balloon‐occluded transcatheter arterial chemoembolization (B‐TACE) was used to show the optimized duration of balloon occlusion to start injection of lipiodol in order to maximize lipiodol deposition in the nodule, and to reveal the endpoint of lipiodol injection.


Radiation Medicine | 2008

Bolus injection of contrast agents with various iodine concentrations and delivery rates for intracranial three-dimensional CT angiography: evaluation of intracranial arteriovenous contrast using a multidetector-row CT scanner

Morio Nagahata; Yoshinao Abe; Shuichi Ono; Hiroyuki Miura; Takashi Ohata; Fumiyasu Tsushima; Kohei Morimoto; Hiroko Seino; Shinya Kakehata; Kiyoshi Basaki

PurposeWe evaluated the difference in computed tomography (CT) attenuation values of the intracranial arterial and venous systems among the various contrast injection protocols (higher iodine delivery rate or higher concentration of the agent) on the source images of intracranial three-dimensional CT angiography (3D-CTA) using a multidetector-row CT (MDCT) scanner.Materials and methodsWe used 100 ml of iopamidol 300 at an injection rate of 3.0 ml/s, 100 ml of iopamidol 300 at an injection rate of 3.7 ml/s, and 80 ml of iopamidol 370 at an injection rate of 3.0 ml/s. There were 10 patients in each group. Attenuation values of the bilateral internal carotid arteries (ICAs), basilar artery trunk, bilateral cavernous sinuses (CSs), and Galenic vein were measured quantitatively on the axial CT angiographic source images obtained by four-channel MDCT.ResultsInjection of the high-concentration contrast with a higher iodine-delivery rate achieved good arteriovenous contrast at the cavernous portion. With the same rate of iodine delivery, injection of the intermediate concentrate agent increased the CT value of not only the ICAs but also the CSs.ConclusionHigh-concentration contrast could increase ICA attenuation without intracavernous attenuation gain during the “first-pass” phase.


International Journal of Radiation Oncology Biology Physics | 2006

Prognostic factors for survival in Stage III non-small-cell lung cancer treated with definitive radiation therapy : Impact of tumor volume

Kiyoshi Basaki; Yoshinao Abe; Masahiko Aoki; Hidehiro Kondo; Yoshiomi Hatayama; Shigeyuki Nakaji


International Journal of Radiation Oncology Biology Physics | 2006

Clinical outcome of hypofractionated conventional conformation radiotherapy for patients with single and no more than three metastatic brain tumors, with noninvasive fixation of the skull without whole brain irradiation

Masahiko Aoki; Yoshinao Abe; Yoshiomi Hatayama; Hidehiro Kondo; Kiyoshi Basaki


Japanese Journal of Clinical Oncology | 2004

Weekly Paclitaxel and Nedaplatin With Concurrent Radiotherapy for Locally Advanced Non-small-cell Lung Cancer: a Phase I/II Study

Yukihiro Hasegawa; Shingo Takanashi; Koichi Okudera; Masahiko Aoki; Kiyoshi Basaki; Hidehiro Kondo; Takenori Takahata; Norio Yasui-Furukori; Tomonori Tateishi; Yoshinao Abe; Ken Okumura


The Journal of JASTRO | 1998

THE IMPACT OF BIOLOGICALLY EFFECTIVE DOSE CORRECTED FOR OVERALL TREATMENT TIME UPON TUMOR CONTROL OF STAGE I AND II LARYNGEAL CANCERS

Yasushi Mariya; Sadao Watanabe; Keiichi Kattou; Yoshinao Abe; Masahiko Aoki; Akira Anbai; Hiroaki Matsukura; Kiyoshi Basaki; Mitsuru Abo


The Journal of JASTRO | 1997

RESULTS OF FRACTIONATED STEREOTACTIC RADIOTHERAPY WITH LINEAR ACCELERATOR

Masahiko Aoki; Sadao Watanabe; Yasushi Mariya; Nobuko Tarusawa; Eiko Fukuda; Akira Anbai; Kiyoshi Basaki; Hiroaki Matsukura; Keiichi Kattou; Yoshinao Abe


The Journal of JASTRO | 1998

RELATIVE BIOLOGICAL EFFECTS OF CARBON ION BEAMS ON MOUSE INTESTINAL CRYPTS

Kiyoshi Basaki; Yoshinao Abe; Hideo Tatsuzaki; Takashi Akaizawa; Soichiro Ando; Koichi Ando


The Journal of JASTRO | 1997

RESULTS OF226RA BRACHYTHERAPY FOR Ti, T2 TONGUE CARCINOMA AND THE CLINICAL IMPLICATION OF PLOIDY AND POTENTIAL DOUBLING TIME AS PROGNOSTIC FACTORS.

Yasushi Mariya; Sadao Watanabe; Keiichi Kattou; Nobuko Tarusawa; Eiko Fukuda; Masahiko Aoki; Akira Anbai; Kiyoshi Basaki; Hiroaki Matsukura; Yoshinao Abe

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