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您的检索式：作者名="Shohei Higuchi"
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| 1 | Diagnostic performance of abbreviated gadoxetic acid-enhanced magnetic resonance protocols with contrast-enhanced computed tomography for detection of colorectal liver metastases显示文摘BACKGROUND Although contrast-enhanced magnetic resonance imaging(MRI)using gadoxetic acid has been shown to have higher accuracy,sensitivity,and specificity for the detection and characterization of hepatic metastases compared with other modalities,the long examination time would limit the broad indication.Several abbreviated enhanced MRI(Ab-MRI)protocols without dynamic phases have been proposed to achieve equivalent diagnostic performance for the detection of colorectal liver metastases.However,an optimal protocol has not been established,and no studies have assessed the diagnostic performance of Ab-MRI combined with contrast-enhanced computed tomography(CE-CT),which is the preoperative imaging of colorectal cancer staging in clinical settings,to determine the best therapeutic strategy.AIM To compare the diagnostic performance of two kinds of Ab-MRI protocol with the standard MRI protocol and a combination of the Ab-MRI protocol and CE-CT for the detection of colorectal liver metastases.METHODS Study participants comprised 87 patients(51 males,36 females;mean age,67.2±10.8 years)who had undergone gadoxetic acid-enhanced MRI and CE-CT during the initial work-up for colorectal cancer from 2010 to 2021.Each exam was independently reviewed by two readers in three reading sessions:(1)Only single-shot fast spin echo(FSE)T2-weighted or fat-suppressed-FSE-T2-weighted,diffusion-weighted,and hepatobiliary-phase images(Ab-MRI protocol 1 or 2);(2)all acquired MRI sequences(standard protocol);and(3)a combination of an Ab-MRI protocol(1 or 2)and CE-CT.Diagnostic performance was then statistically analyzed.RESULTS A total of 380 Lesions were analyzed,including 195 metastases(51.4%).Results from the two Ab-MRI protocols were similar.The sensitivity,specificity,and positive and negative predictive values from Ab-MRI were non-inferior to those from standard MRI(P>0.05),while those from the combination of Ab-MRI protocol and CE-CT tended to be higher than those from Ab-MRI alone,although the difference was not significant(P>0.05),and were quite similar to those from standard MRI(P>0.05).CONCLUSION The diagnostic performances of two Ab-MRI protocols were non-inferior to that of the standard protocol.Combining Ab-MRI with CE-CT provided better diagnostic performance than Ab-MRI alone. | Kumi Ozaki Shota Ishida Shohei Higuchi Toyohiko Sakai Ayaki Kitano Kenji Takata Kazuyuki Kinoshita Yuki Matta Takashi Ohtani Hirohiko Kimura Toshifumi Gabata | 2022 | World Journal of Radiology2022，14，10： | 0 |
| 2 | Leadless cardiac pacemaker implantations after infected pacemaker system removals in octogenarians显示文摘Background Management of pacemaker(PM)infections among advanced aged patients possesses particular clinical challenges due to higher rates of concurrent cardiovascular disease and medical comorbidities.Novel leadless cardiac pacemakers(LCPs)may provide new opportunities for better management options in this population,however,there is limited data especially in Asian populations to guide the decision making.Methods We reviewed 11 octogenarians(median age:86[minimum 82–maximum 90]years;male:73%;median body mass index(BMI):20.1 kg/m^(2))who received Micra Transcatheter Pacing System(Medtronic Inc,Minneapolis,MN)implantations following transvenous lead extractions(TLEs)for PM infections.Results All patients had more than two medical comorbidities(average 3.7 comorbidities).The indications for LCP implantations were atrioventricular block in four patients,atrial fibrillation bradycardia in five,and sinus node dysfunction in two.Eight patients(73%)were bridged with temporary pacing using active fixation leads(median interval of 14.0 days),while one with severe dementia underwent a concomitant LCP implantation and TLE during the same procedure.Successful TLEs and LCP implantations were successfully accomplished in all without any complications.The median time from the TLE procedure to discharge was 22 days(minimum 7–maximum 136).All patients remained free of infections during a mean follow-up period of 17.2±6.5 months.Conclusions LCP implantations were safe and effective after removing the entire infectious PM system in all octogenarians.The novel LCP technology may offer an alternative option for considering a re-implantation strategy after transvenous PM infections in elderly patients,particularly those with severe frailty and PM dependency. | Satoshi Higuchi Ayako Okada Morio Shoda Daigo Yagishita Satoshi Saito Miwa Kanai Shohei Kataoka Kyoichiro Yazaki Hiroaki Tabata Hideki Kobayashi Wataru Shoin Takahiro Okano Koji Yoshie Koichiro Ejima Koichiro Kuwahara Nobuhisa Hagiwara | 2021 | Journal of Geriatric Cardiology2021，18，7： | 0 |
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