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Yoshida T, Shibata A, Tanihata A, Hayashi H, Ichikawa Y, Ishikawa H, Yamaguchi Y, Kitada R, Ehara S, Izumiya Y, Yoshiyama M. Thigh intramuscular fat predicts the prognosis in patients in non-ischemic cardiomyopathy with reduced ejection fraction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Skeletal muscle atrophy is an independent prognostic predictor for patients with chronic heart failure, and the concept of sarcopenia is drawing attention. Furthermore, the importance of not only muscle mass but also intramuscular fat (IMF) has been pointed out. However, there is a lack of consensus on the implications of ectopic fat for the prognosis in patients with non-ischemic cardiomyopathy.
Purpose
We investigated whether ectopic fat in the thigh affects the prognosis with non-ischemic cardiomyopathy.
Methods
We recruited 105 patients who were diagnosed with non-ischemic cardiomyopathy by cardiac catheterization and echocardiographic date between September 2017 and November 2019. Finally 73 patients with reduced EF (EF 40% or less) enrolled in this prospective study. Functional status was evaluated by using cardiopulmonary exercise test at baseline. All patients were measured quantity of epicardial fat and thigh IMF percentage (%IMF) using computed tomography scan. Demographic, laboratory and echocardiographic date were collected from the patients' medical records. Clinical endpoints were unexpected readmission.
Results
During the follow-up period 18 patients had adverse events. The %IMF was significantly higher in the group with adverse events than without (5.57±5.70 and 3.02±2.44%, respectively; p<0.01). Spearman correlation coefficient analysis showed a modest correlation between %IMF and lower limb extension strength (Spearman r=−0.280; p=0.0315), but there was no significant correlation between %IMF and exercise tolerance such as anaerobic threshold and peak oxygen uptake. Patients were divided into 2 groups according to the median values of %IMF. Kaplan-Meier analysis demonstrated that events were significantly higher in the high %IMF group (log-rank p=0.033). Multivariate Cox regression analysis adjusted for left ventricular end-diastolic diameter and peak ventricular oxygen consumption found %IMF as an independent factor of adverse events (hazard ratio 1.545; 95% confidential interval 1.151–2.087; p=0.004).
Conclusions
In non-ischemic cardiomyopathy patients with reduced EF, %IMF may have important adverse consequences such as increased cardiac-related events.
Kaplan-Meier curves
Funding Acknowledgement
Type of funding source: None
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Ishikawa H, Izumiya Y, Shibata A, Yoshida T, Hayashi H, Ichikawa Y, Yamaguchi Y, Kitada R, Ehara S, Yoshiyama M. Regional muscle-adipose distribution is different in patients with heart failure with preserved or reduced ejection fraction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Epicardial adipose tissue (EAT) has been recognized to contribute inflammatory activity and atherosclerosis. On the other hand, it has been reported that the volume of EAT is lower in non-ischemic heart failure (HF) patients than healthy individuals. However, the difference in regional muscle-adipose distribution including EAT between HF with preserved ejection fraction (HFpEF) and HF reduced ejection fraction (HFrEF) has not been investigated. In addition, we investigated whether distribution of body composition contributed to exercise capacity.
Methods
The study included 105 non-ischemic HF patients diagnosed by cardiac catheterization between September 2017 and November 2019. Epicardial, abdominal and thigh muscle and adipose tissue volume were measured by computed tomography (CT), and exercise tolerance was evaluated by symptom-limited cardiopulmonary exercise test.
Results
Patients were divided into 2 groups according to the left ventricular ejection fraction, ≥40% as HFpEF (n=28) or <40% as HFrEF (n=77). There was no significant difference comorbidity, including hypertension, dyslipidemia, chronic kidney disease, and body mass index. Plasma B-type natriuretic peptide level was significantly higher in HFrEF than HFpEF group (146.2 vs 393.2 pg/ml, p<0.01), whereas, high-sensitive troponin T level was not different between two groups. Although there was no significant difference in BMI between two groups, the volume of EAT was significantly higher in HFpEF than HFrEF group (81.8 vs 136.4 ml, p=0.01). On the other hand, HFpEF had more thigh adipose tissue compared with HFrEF group (54.6 vs 42.1 ml, p=0.03). There were negative correlations between EAT volume and parameters of exercise capacity such as anaerobic threshold (r=−0.42, p<0.01) and peak VO2 (r=−0.32, p<0.01). Muscle volume itself does not corelate with these parameters.
Conclusion
In patient with nonischemic HF, the pattern of regional adipose distribution may have important role in pathologically. HFpEF and HFrEF has different pattern despite similar body mass index. These differences may be related to impaired exercise tolerance in these 2 different types of HF.
Correlation between EAT and AT, peak VO2
Funding Acknowledgement
Type of funding source: None
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Harada S, Segawa T, Sato T, Ehara S, Sera K, Goto S. Imaging of Primary and Metastatic Tumors and Their Treatment through Abscopal Effects and Cancer Immunotherapy Using Encapsulated, Radiation Therapy Directed Antigen-Capturing Nanoparticles. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.06.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Harada S, Segawa T, Ehara S, Sato T, Sera K, Goto S. Imaging and Treatment of Primary Tumors and Metastases by Targeted Macrophage Therapy, Using Radiation Therapy-Directed Encapsulated Nanoparticles. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Harada S, Ehara S, Sato T, Kamiya T, Sera K, Goto S, Ishii K. Imaging of Primary and Metastatic Tumors and Their Treatment Through Targeted Dendritic Cell–Mediated T-Cell Priming and Immune Checkpoint Blockade, Using Encapsulated Nanoparticles Directed by Radiation Therapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Harada S, Ehara S, Ishii K, Sato T, Koka M, Kamiya T, Sera K, Goto S. Imaging of Primary Tumor and Metastases and Their Treatment Through Targeted Immunogenic Cell Death and Abscopal Effect, Using Encapsulated Nanoparticles Directed by Radiation Therapy. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sato J, Kumagai M, Kato K, Akahane A, Suzuki M, Ehara S, Sone M, Takahashi K, Kudo K. Subcutaneous Implantation Type Central Veins Port (CV Port) Management in Patients with Malignant Tumor. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kikuchi K, Nakamura R, Yamaguchi S, Tanji S, Yabuuchi T, Oikawa H, Kakuhara H, Inatsu W, Ehara S, Ariga H. Three-dimensional Summation of Rectal Doses During Combined Seed Implant Brachytherapy and External Beam Radiation Therapy for Prostate Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Harada S, Ehara S, Ishii K, Yamazaki H, Matsuyama S, Sato T, Kamiya T, Sera K. Imaging of Premetastatic Sites and Prophylaxis of Metastasis Using Radiosensitive Nanocapsules via Radiation Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Harada S, Ehara S, Ishii K, Matsuyama S, Sato T, Kamiya T, Sera K. Imaging And Treatment Of Incipient Metastasis Using Radiosensitive Nanocapsules Via 2 Radiotherapy Sessions. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Harada S, Ehara S, Ishii K, Yamazaki H, Matsuyama N, Sato T, Kamiya T, Sera K. Imaging of Metastatic Potential and Inhibition of Metastasis using Two Types of Nanocapsules In Vivo. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Harada S, Ehara S, Sera K, Ishii K, Yamazaki H, Matsuyama N, Sato T, Oikawa S, Kamiya T, Ito J. Radiosensitization, Multi-Drug Targeting, and Endocytosis by Liquid-Core Microcapsules Accumulated Through Radiation. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.267] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Adachi T, Naruko T, Itoh A, Komatsu R, Abe Y, Shirai N, Yamashita H, Ehara S, Nakagawa M, Kitabayashi C, Ikura Y, Ohsawa M, Yoshiyama M, Haze K, Ueda M. Neopterin is associated with plaque inflammation and destabilisation in human coronary atherosclerotic lesions. Heart 2007; 93:1537-41. [PMID: 17575334 PMCID: PMC2095726 DOI: 10.1136/hrt.2006.109736] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Previous studies have shown that recent activation of the inflammatory response in coronary atherosclerotic lesions contributes to rapid progressive plaque destabilisation. Neopterin, a by-product of the guanosine triphosphate pathway, is produced by activated macrophages and serves as an activation marker for monocytes/macrophages. OBJECTIVE To elucidate the role of neopterin in coronary plaque destabilisation by immunohistochemical study of the presence of neopterin in coronary atherectomy specimens obtained from patients with stable angina pectoris (SAP) and unstable angina pectoris (UAP). PATIENTS AND METHODS All patients underwent atherectomy of the primary atherosclerotic lesions responsible for SAP (n = 25) and UAP (n = 25). Frozen samples were studied with antibodies against smooth muscle cells, macrophages, T cells, neutrophils and neopterin. RESULTS In 22/25 patients with UAP, abundant neopterin-positive macrophages were found at the sites of coronary culprit lesions. However, in 25 lesions from patients with SAP, only 11 lesions showed neopterin positivity. Quantitatively, the neopterin-positive macrophage score was significantly higher (p<0.001) in patients with UAP than in patients with SAP. Moreover, the neopterin-positive macrophage score showed a significant positive correlation with the number of neutrophils or T cells, respectively (neutrophils, r = 0.55, p<0.001; T cells, r = 0.70, p<0.001). CONCLUSIONS Neopterin can be considered as one of the significant factors in the process of plaque inflammation and destabilisation in human coronary atherosclerotic lesions. Its exact role in the process needs to be investigated further.
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Hagiwara Y, Hatori M, Moriya T, Terada Y, Yaegashi N, Ehara S, Kokubun S. Inguinal endometriosis attaching to the round ligament. ACTA ACUST UNITED AC 2007; 51:91-4. [PMID: 17217498 DOI: 10.1111/j.1440-1673.2006.01667.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report a case of endometriosis in the right inguinal region, attached to the right round ligament in a 28-year-old woman. At the age of 20, laparoscopic left ovarian cystectomy and pelvic adhesiolysis for endometriosis was carried out. She noticed a right tender groin mass 7 months previously, and the tumour size fluctuated with the menstrual cycle. A poorly circumscribed elastic hard mass, measuring 3 cm in diameter, was palpated in her right inguinal region. Magnetic resonance imaging showed a 2.5 cm x 2.5 cm mass in the right inguinal canal and a 5.4 cm x 6.8 cm mass was seen in the left ovary. The mass enlarged during menstruation. The groin mass was removed, in addition to carrying out laparoscopic ovarian cystectomy. At operation, the groin mass was found to be in continuity with the round ligament of extraperitoneal portion. Histological diagnosis of endometriosis was made in both ovarian and inguinal tumours. After surgery, the pain disappeared completely. Worth mentioning is that MRI clearly showed the change of tumour size depending on the menstrual cycle, which aided in arriving at the correct diagnosis of endometriosis in an unusual location.
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Harada S, Ehara S, Ishii K, Yamazaki H, Matsuyama S, Kamiya T, Sato T, Oikawa S, Sera K, Ito J. 2702. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.1118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Fukuda D, Yoshiyama M, Shimada K, Yamashita H, Ehara S, Nakamura Y, Kamimori K, Tanaka A, Kawarabayashi T, Yoshikawa J. Relation between aortic stiffness and coronary flow reserve in patients with coronary artery disease. Heart 2005; 92:759-62. [PMID: 16216858 PMCID: PMC1860663 DOI: 10.1136/hrt.2005.067934] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES To investigate the relation between aortic stiffness and coronary flow reserve (CFR) in patients with coronary artery disease (CAD). DESIGN Observational study. SETTING Coronary care unit of a primary care hospital. PATIENTS 192 consecutive patients who underwent coronary angiography. MAIN OUTCOME MEASURE Brachial-ankle pulse wave velocity (ba-PWV), CFR, and severity of CAD. RESULTS According to the angiographic findings, patients were divided into four subgroups: patients without significant stenosis (normal coronary artery (NCA) group, n = 28) and those with one vessel disease (1VD group, n = 92), two vessel disease (2VD group, n = 50), or three vessel disease (3VD group, n = 22). ba-PWV increased with the number of diseased vessels and was significantly correlated with the number of diseased vessels (NCA group v 1VD group v 2VD group v 3VD group: 1481 (252) v 1505 (278) v 1577 (266) v 1727 (347) cm/s, p < 0.001). CFR had a significant negative correlation with ba-PWV (r = -0.45, p < 0.0001). The diastolic to systolic velocity ratio obtained in 45 patients also was significantly correlated with ba-PWV (r = -0.35, p < 0.05). Multiple regression analysis showed that ba-PWV was an independent determinant of CFR (p < 0.01). CONCLUSIONS Coronary flow is altered with aortic stiffening in patients with CAD. These results suggest one possible mechanism for recent reports that aortic stiffness is a key cardiovascular risk factor.
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Harada S, Ehara S, Ishii K, Yamazaki H, Matsuyama S, Sakai T, Obara Y, Sato T, Oikawa M, Sera K, Itoh J. The Targeting of the Chemotherapeutic Agents or Radiosensitizer by Radiation, Using the Liquid Core Microcapsules. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.832] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nakamura Y, Shimada K, Fukuda D, Shimada Y, Ehara S, Hirose M, Kataoka T, Kamimori K, Shimodozono S, Kobayashi Y, Yoshiyama M, Takeuchi K, Yoshikawa J. Implications of plasma concentrations of adiponectin in patients with coronary artery disease. BRITISH HEART JOURNAL 2004; 90:528-33. [PMID: 15084551 PMCID: PMC1768199 DOI: 10.1136/hrt.2003.011114] [Citation(s) in RCA: 189] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To investigate whether concentrations of plasma adiponectin constitute a significant coronary risk factor, with particular focus on the relation between plasma concentrations of adiponectin and the development of acute coronary syndrome (ACS). SUBJECTS AND METHODS Plasma concentrations of adiponectin were measured in 123 patients with coronary artery disease (CAD) and in 17 control participants. Patients were divided into three groups according to condition type: acute myocardial infarction (AMI) group (n = 59), unstable angina pectoris (UAP) group (n = 28), and stable angina pectoris (SAP) group (n = 36). RESULTS Plasma concentrations of adiponectin correlated negatively with body mass index (r = -0.18, p < 0.05), serum triglyceride (r = -0.25, p < 0.01), and fasting glucose concentrations (r = -0.21, p < 0.05), but correlated positively with age (r = 0.26, p < 0.01), high density lipoprotein cholesterol concentrations (r = 0.35, p < 0.01), and low density lipoprotein particle size (r = 0.37, p < 0.01). Plasma concentrations of adiponectin in patients with ACS, in both the AMI and UAP groups, were significantly lower than those in patients with SAP and in the control group (ACS, 6.5 (3.0) microg/ml; SAP, 11.3 (5.9) micro g/ml; control 12.8 (4.3) microg/ml; p < 0.01). Additionally, plasma concentrations of adiponectin in patients with CAD (7.9 (4.6) microg/ml, p < 0.01) were significantly lower than in the control group. There were, however, no significant differences between patients with SAP and the control group (p = 0.36). Multiple logistic regression analysis showed that smoking, fasting glucose concentration, and low log adiponectin concentration correlated independently with the development of an ACS. CONCLUSIONS The findings suggest that measurement of plasma concentrations of adiponectin may be of use for assessing the risk of CAD and may be related to the development of ACS.
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Shimada Y, Yoshiyama M, Kobayashi Y, Tanaka H, Jissho S, Iida H, Nakamura Y, Ehara S, Shimada K, Takeuchi K, Yoshikawa J. Positive correlation between coronary arterial remodelling and prodromal angina in acute myocardial infarction. BRITISH HEART JOURNAL 2004; 90:444-5. [PMID: 15020526 PMCID: PMC1768156 DOI: 10.1136/hrt.2003.015354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Shimada K, Sakanoue Y, Kobayashi Y, Ehara S, Hirose M, Nakamura Y, Fukuda D, Yamagishi H, Yoshiyama M, Takeuchi K, Yoshikawa J. Assessment of myocardial viability using coronary zero flow pressure after successful angioplasty in patients with acute anterior myocardial infarction. Heart 2003; 89:71-6. [PMID: 12482796 PMCID: PMC1767508 DOI: 10.1136/heart.89.1.71] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES To investigate the relation between coronary flow reserve (CFR), coronary zero flow pressure (Pzf), and residual myocardial viability in patients with acute myocardial infarction. DESIGNS Prospective study. SETTING Primary care hospital. PATIENTS 27 consecutive patients with acute anterior myocardial infarction. MAIN OUTCOME MEASURES F-fluorodeoxyglucose (FDG) positron emission tomography (PET) was used in 27 patients who underwent successful intervention within 12 hours of onset of a first acute anterior myocardial infarction. Within three days before discharge they had < 25% stenosis in the culprit lesion as determined by angiography 24 (3) days after acute myocardial infarction. Pzf and the slope index of the flow-pressure relation (SIFP) were calculated from the simultaneously recorded aortic pressure and coronary flow velocity signals at peak hyperaemia.%FDG was quantified by comparing FDG uptake in the infarct myocardium with FDG uptake in the normal myocardium. RESULTS There was a correlation between %FDG and CFR, where y = -1.477x + 62.517, r = -0.072 (NS). There was also a correlation between %FDG and SIFP, where y = -0.975x + 60.542, r = -0.045 (NS), and a significant correlation between %FDG and Pzf, where y = -0.98x + 85.108, r = -0.696 (p < 0.001). CONCLUSIONS CFR does not correlate with FDG-PET at the time of postreperfusion evaluation of residual myocardial viability. The parameter that correlates best with residual myocardial viability is Pzf and this may be a useful index for predicting patient prognosis.
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Ehara S. Appropriate follow-up time. AJR Am J Roentgenol 2001; 177:1483. [PMID: 11717114 DOI: 10.2214/ajr.177.6.1771483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hatori M, Hosaka M, Ehara S, Kokubun S. Imaging features of intraosseous lipomas of the calcaneus. Arch Orthop Trauma Surg 2001; 121:429-32. [PMID: 11550827 DOI: 10.1007/s004020100269] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report two cases of intraosseous lipoma arising in the calcaneus of a 36-year-old and a 22-year-old women complaining of heel pain. Plain radiographs and computed tomography scans revealed cystic lesions in the calcaneus triangle. On magnetic resonance images, the lesions had high signal intensities on both T1-weighted and T2-weighted images, corresponding to adipose tissue. Histological examination revealed mature fat cells with small bone fragments. Curettage and bone grafting were performed. There was no recurrence identified on plain radiographs 2 years following the surgery.
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Nakayama T, Ehara S, Hama H. Spontaneous progression of vertebral intraosseous pneumatocysts to fluid-filled cysts. Skeletal Radiol 2001; 30:523-6. [PMID: 11587521 DOI: 10.1007/s002560100367] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Intraosseous pneumatocyst is a relatively rare condition, and its natural course is not known. We report two cases of intraosseous pneumatocyst of vertebra with resorption of gas and its replacement with fluid shown on follow-up cross-sectional imaging. The mechanism influencing the course of these appearances is unclear. However, the benign nature of intraosseous pneumatocyst needs to be recognized and biopsy avoided.
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Ehara S. Radiofrequency ablation of spinal tumors. AJR Am J Roentgenol 2001; 177:246. [PMID: 11418439 DOI: 10.2214/ajr.177.1.1770246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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