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Satoh A, Shuto K, Okazumi S, Ohira G, Natsume T, Hayano K, Narushima K, Saito H, Ohta T, Nabeya Y, Yanagawa N, Matsubara H. Role of perfusion CT in assessing tumor blood flow and malignancy level of gastric cancer. Dig Surg 2010; 27:253-60. [PMID: 20668380 DOI: 10.1159/000288703] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND/AIMS Intratumoral hemodynamics or tumor perfusion is useful in understanding the pathological background of the cancer. A parameter for a non-invasive, preoperative assessment of tumor perfusion has yet to be developed. METHODS The study included 50 patients who underwent surgery for gastric cancer. Perfusion computed tomography (P-CT) was performed using a 16-row multidetector CT, and tumor blood flow (ml/min/100 g tissue) values were measured. We compared blood flow with histopathological characteristics and evaluated its correlation with microvessel density and tumor stromal density and calculated the ratio of vessels and stromal tissue. RESULTS There was a significant decrease in blood flow in advanced tumor depth, peritoneal dissemination and undifferentiated subtypes. Cases with Lauren's diffuse type carcinoma were found to have decreased blood flow compared to the mixed or intestinal type. As for the stromal structure, despite the lack of correlation with microvessel density, blood flow significantly decreased with increased stromal density. CONCLUSIONS Decreased blood flow value acquired from P-CT may reflect a progressive state of gastric cancer. The pathological background for this relation involves the tumor stroma. Tumor perfusion decreased as the stage and malignant character of the tumor advanced, and therefore P-CT could be a better strategy to estimate the malignancy level of cancer.
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John T, Kohler D, Yanagawa N, Pintilie M, Li M, Panchal D, Pham N, Der S, Shepherd FA, Tsao MS. Correlation of engraftment, mutation status, and response to chemotherapy in primary tumor xenograft models of NSCLC. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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53
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Yamauchi T, Yamazaki M, Okawa A, Furuya T, Hayashi K, Sakuma T, Takahashi H, Yanagawa N, Koda M. Efficacy and reliability of highly functional open source DICOM software (OsiriX) in spine surgery. J Clin Neurosci 2010; 17:756-9. [PMID: 20359897 DOI: 10.1016/j.jocn.2009.09.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2009] [Revised: 09/09/2009] [Accepted: 09/13/2009] [Indexed: 11/27/2022]
Abstract
We evaluated the feasibility and reliability of open source Digital Imaging and COmmunication in Medicine (DICOM) imaging software, OsiriX (Antoine Rosset, 2003-2009), in spine surgery. CT data were used and processed with OsiriX and with commercial software for comparison. Images were reconstructed and compared in volume rendering (VR) and multi-planar reconstruction (MPR) mode. When all images were compared, the three-dimensional (3D) reconstructed images from both software packages showed considerable consistency in VR mode. Measurements in MPR mode also showed similar values with no statistically significant difference. These results demonstrate that OsiriX has approximately equivalent values to commercial software and provides reliable preoperative 3D information for the surgical field. In addition, any clinician, can obtain information using OsiriX at any time. Thus, OsiriX is a helpful tool in preoperative planning for spine surgery.
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Ohtori S, Yamashita M, Inoue G, Yamauchi K, Koshi T, Suzuki M, Takaso M, Orita S, Eguchi Y, Ochiai N, Kishida S, Mimura M, Yanagawa N, Ishikawa T, Arai G, Miyagi M, Kamoda H, Aoki Y, Kuniyoshi K, Nakamura J, Takahashi K. Rotational hypermobility of disc wedging using kinematic CT: preliminary study to investigate the instability of discs in degenerated scoliosis in the lumbar spine. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2010; 19:989-94. [PMID: 20140464 DOI: 10.1007/s00586-010-1299-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2009] [Revised: 01/14/2010] [Accepted: 01/16/2010] [Indexed: 10/19/2022]
Abstract
The number of patients showing lumbar degenerative scoliosis, including disc wedging, has increased, and examination of the mechanism of spinal nerve compression due to lateral and rotational mobility of the lumbar spine is necessary. Thirty-two patients with L4-L5 disc wedging but without antero- or retrospondylolisthesis and ten age-matched controls were examined. The angle of disc wedging and change in the angle between left and right bending were evaluated by anterior-posterior X-ray images of patients while they were in a standing position. The degree of disc degeneration and existence of vacuum phenomena were evaluated at the L4-L5 discs. Rotational mobility between maximal right and left rotation was examined by computed tomography (CT). Rotational mobility was measured using the spinal transverse processes of L4 and L5. The relationship between these factors was statistically evaluated using multivariate analysis and Spearman's correlation test. There was a significant increase in the average rotational mobility of the L4-L5 disc-wedging group. In the L4-L5 disc-wedging group, the increased angle of disc wedging and change in the angle between left and right bending correlated with increased rotational mobility. The degree of disc degeneration did not affect rotational mobility. However, existence of vacuum phenomena increased the rotational mobility of the L4-L5 disc-wedging group. This is the first study to evaluate the rotational hypermobility of L4-L5 disc wedging in patients without antero- or retrospondylolisthesis using kinematic CT. Increases in the wedging angle and abnormal instability of lateral bending correlated with increased rotational mobility. For surgical planning of degenerative L4-L5 disc wedging, it is important to consider rotational hypermobility using kinematic CT or X-ray imaging findings of lateral bending.
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Hayano K, Shuto K, Koda K, Yanagawa N, Okazumi S, Matsubara H. Quantitative measurement of blood flow using perfusion CT for assessing clinicopathologic features and prognosis in patients with rectal cancer. Dis Colon Rectum 2009; 52:1624-9. [PMID: 19690492 DOI: 10.1007/dcr.0b013e3181afbd79] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE The ability to evaluate clinicopathologic features and prognosis before surgery by contrast-enhanced CT would be valuable for managing rectal cancer. This study was designed to evaluate the clinical usefulness of perfusion CT in patients with rectal cancer before surgery. METHODS Forty-four consecutive patients (27 men, 17 women; median age, 63.6 years) with rectal cancer underwent perfusion CT before surgery. We retrospectively investigated the correlations between tumor blood flow generated by perfusion CT and clinicopathologic features. RESULTS There was a significant correlation between blood flow and wall invasion (P = 0.04). Well-differentiated tumors showed significantly higher blood flow than moderately differentiated tumors (P = 0.03). There was a significant tendency for tumors with low blood flow to show lymph node metastasis (P = 0.0005), vascular invasion (P = 0.004), lymphatic invasion (P = 0.04), and distant metastasis (P = 0.0005). For blood flow, accuracy was 75% for detection of tumors with lymph node metastasis if the cutoff point was set at 55 ml/100 g per minute. Patients with high blood flow tumors survived significantly longer than those with low blood flow tumors (P = 0.002). CONCLUSIONS Blood flow of rectal cancers may be useful to evaluate pathologic features and prognosis before surgery.
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Mizuno S, Takiguchi Y, Fujikawa A, Motoori K, Tada Y, Kurosu K, Sekine Y, Yanagawa N, Hiroshima K, Muraoka K, Mitsushima T, Niki N, Tanabe N, Tatsumi K, Kuriyama T. Chronic obstructive pulmonary disease and interstitial lung disease in patients with lung cancer. Respirology 2009; 14:377-83. [PMID: 19192220 DOI: 10.1111/j.1440-1843.2008.01477.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND OBJECTIVE Although lung cancer is frequently accompanied by COPD and interstitial lung disease (ILD), the precise coincidence of these diseases with lung cancer is not well understood. The objectives of this study were to determine the prevalence of abnormal CT and spirometric findings suggestive of COPD or ILD in a population of patients with untreated lung cancer, and to estimate the lung cancer risk in this population. METHODS The study population consisted of 256 patients with untreated lung cancer and 947 subjects participating in a CT screening programme for lung cancer. Semi-quantitative analysis of low attenuation area (LAA), fibrosis and ground glass attenuation (GGA) on CT was performed by scoring. Gender- and age-matched subpopulations, with stratification by smoking status, were compared using the Mantel-Haenszel projection method. RESULTS Inter-observer consistency was excellent for LAA, but not as good for fibrosis or GGA scores. Pooled odds ratios for lung cancer risk using LAA, fibrosis, GGA scores and reduced FEV(1)/FVC and %VC were 3.63, 5.10, 2.71, 7.17 and 4.73, respectively (P < 0.0001 for all parameters). Multivariate regression analyses confirmed these results. CONCLUSION Abnormal CT and spirometric parameters suggestive of COPD and ILD were strong risk factors for lung cancer, even after adjusting for gender, age and smoking status.
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Yanagawa N. [Construction of guide line for all CT Imaging: GuLACTIC]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2008; 64:379-381. [PMID: 18434680 DOI: 10.6009/jjrt.64.379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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58
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Tanno S, Nakano Y, Nishikawa T, Nakamura K, Sasajima J, Minoguchi M, Mizukami Y, Yanagawa N, Fujii T, Obara T, Okumura T, Kohgo Y. Natural history of branch duct intraductal papillary-mucinous neoplasms of the pancreas without mural nodules: long-term follow-up results. Gut 2008; 57:339-43. [PMID: 17660227 DOI: 10.1136/gut.2007.129684] [Citation(s) in RCA: 194] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Although branch duct intraductal papillary-mucinous neoplasms (IPMNs) of the pancreas without mural nodules are frequently observed in asymptomatic subjects, the natural history of these lesions has never been studied. The aim of this study was to elucidate the natural history of branch duct IPMNs without mural nodules. METHODS Eighty-two patients who had no apparent mural nodules on initial examination were selected for follow-up. All subjects underwent examinations by imaging modalities including endoscopic retrograde pancreatography, and were followed-up by regular examinations once or twice a year. Serial changes of the maximum cystic diameter and the appearance of mural nodules were studied during the observation periods ranging from 14 to 148 months (median, 61 months). RESULTS Nine (11.0%) of 82 patients exhibited obvious progression of cystic dilatation (median, 59 months). Of these nine patients with cystic enlargement, six continued with regular follow-up examinations. Three cases underwent surgical resection, and were pathologically diagnosed as adenoma in two and borderline in one. Four patients (4.9%) showed newly developed mural nodules in dilated branch ducts (median, 105 months). Histological analysis revealed three cases classified as adenoma and one as carcinoma in situ. None of the remaining 69 patients (84.1%) showed any changes in dilated branch ducts (median, 57 months). CONCLUSIONS Most branch duct IPMNs without mural nodules remained unchanged during long-term follow-up. Although follow-up with careful examination is required to detect newly developed mural nodules in dilated branch ducts, branch duct IPMNs without mural nodules can be followed-up without surgery.
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Nishizawa K, Mori SI, Ohno M, Yanagawa N, Yoshida T, Akahane K, Iwai K, Wada SI. Patient dose estimation for multi-detector-row CT examinations. RADIATION PROTECTION DOSIMETRY 2008; 128:98-105. [PMID: 17595212 DOI: 10.1093/rpd/ncm244] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The spread of Multi-detector-row computed tomography (MDCT) has been remarkable. Here, various organ and tissue doses were evaluated with six types of MDCT scanners in common use in Japan; using thermoluminescence dosimeters and anthropomorphic phantoms under condition of routine clinical examinations of the chest in adult and child, of the head in child and of the abdomen-pelvis in adult. Estimated lung doses and averaged effective dose in chest examinations were 19.2 +/- 2.03 mGy and 9.54 +/- 0.90 mSv for the adult and 15.7 +/- 1.88 mGy and 7.42 +/- 0.82 mSv for the child phantom, respectively. The numerical difference between effective dose and organ or tissue doses was about 2-2.5 times. For the adult abdomen-pelvis examinations, averaged effective dose was 13.0 +/- 3.72 mSv. Averaged effective dose for the child head examinations was 2.6 +/- 1.32 mSv. In one case, the dose approached 80 mGy for the brain in the head examination, giving a difference from the effective dose of 10 times or more.
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Hayano K, Okazumi S, Shuto K, Matsubara H, Shimada H, Nabeya Y, Kazama T, Yanagawa N, Ochiai T. Perfusion CT can predict the response to chemoradiation therapy and survival in esophageal squamous cell carcinoma: initial clinical results. Oncol Rep 2007. [PMID: 17786353 DOI: 10.3892/or.18.4.901] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The ability to predict the response to chemoradiation therapy (CRT) by contrast-enhanced CT would be valuable for managing esophageal squamous cell carcinoma. The purpose of this study was to evaluate the usefulness of Perfusion CT to predict the response to CRT in patients with esophageal squamous cell carcinoma. Thirty-one consecutive patients with esophageal squamous cell carcinoma underwent Perfusion CT before CRT. We retrospectively investigated the correlations between Perfusion parameters and the response to CRT. Clinicopathological markers and blood flow were compared in terms of survival. There were 21 clinical responders and 10 non-responders. Clinical responders showed significantly higher pre-CRT blood flow (P=0.0004), significantly higher pre-CRT blood volume (P=0.03) and a significantly shorter pre-CRT mean transit time (P=0.002) than non-responders. For pre-CRT blood flow, accuracy was 90.3% for detection of clinical responders when the cut-off point was set at 50 ml/100 g/min. Patients with high blood flow tumors survived significantly longer than those with low blood flow tumors (P=0.006). Multivariate analysis identified blood flow as a significant independent prognostic factor (P=0.01). Therefore, Perfusion CT may help to identify patients with advanced esophageal squamous cell carcinoma who will benefit from CRT.
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Hayano K, Okazumi S, Shuto K, Matsubara H, Shimada H, Nabeya Y, Kazama T, Yanagawa N, Ochiai T. Perfusion CT can predict the response to chemoradiation therapy and survival in esophageal squamous cell carcinoma: initial clinical results. Oncol Rep 2007; 18:901-8. [PMID: 17786353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
The ability to predict the response to chemoradiation therapy (CRT) by contrast-enhanced CT would be valuable for managing esophageal squamous cell carcinoma. The purpose of this study was to evaluate the usefulness of Perfusion CT to predict the response to CRT in patients with esophageal squamous cell carcinoma. Thirty-one consecutive patients with esophageal squamous cell carcinoma underwent Perfusion CT before CRT. We retrospectively investigated the correlations between Perfusion parameters and the response to CRT. Clinicopathological markers and blood flow were compared in terms of survival. There were 21 clinical responders and 10 non-responders. Clinical responders showed significantly higher pre-CRT blood flow (P=0.0004), significantly higher pre-CRT blood volume (P=0.03) and a significantly shorter pre-CRT mean transit time (P=0.002) than non-responders. For pre-CRT blood flow, accuracy was 90.3% for detection of clinical responders when the cut-off point was set at 50 ml/100 g/min. Patients with high blood flow tumors survived significantly longer than those with low blood flow tumors (P=0.006). Multivariate analysis identified blood flow as a significant independent prognostic factor (P=0.01). Therefore, Perfusion CT may help to identify patients with advanced esophageal squamous cell carcinoma who will benefit from CRT.
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Ando H, Funabashi N, Uehara M, Suzuki M, Sato H, Hashimoto M, Ishida A, Yanagawa N, Fukuchi Y, Kikawa T, Imada M, Komuro I. Abnormal collateral arterial systems in Takayasu's arteritis and Leriche's syndrome evaluated by whole body acquisition using multislice computed tomography. Int J Cardiol 2007; 121:306-8. [PMID: 17156865 DOI: 10.1016/j.ijcard.2006.08.121] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2006] [Accepted: 08/12/2006] [Indexed: 11/17/2022]
Abstract
Takayasu's arteritis causes various arterial changes, including wall thickening, occlusion, aneurysm, and calcification. Similarly, Leriche's syndrome causes occlusion of the abdominal aorta or iliac arteries accompanied by ischemic symptoms of the distal lower extremities. Both diseases are potentially associated with the development of unexpected collateral arteries throughout the body. We evaluated whole body arteries in subjects with Takayasu's arteritis and Leriche's syndrome using 16-slice multislice CT and concluded that it was a useful tool to detect unexpected collateral arterial systems in Takayasu's arteritis or Leriche's syndrome in a non-invasive fashion.
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Hoshi S, Suzuki K, Tukigi M, Sugano O, Ono K, Tamura G, Saso S, Yanagawa N, Yamamoto T. MP-11.04: Saturation biopsy does not improve concordance of Gleason grading between prostate needle biopsy and radical prostatectomy. Urology 2007. [DOI: 10.1016/j.urology.2007.06.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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64
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Amauchi H, Nishimura K, Izumi T, Kumagai K, Suzuki K, Tsukamoto A, Hirokawa Y, Miyazawa Y, Mirakami T, Murayama S, Yanagawa N. [Investigation of risk management for radiological technologists]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2007; 63:62-8. [PMID: 17344633 DOI: 10.6009/jjrt.63.62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
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65
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Yasui T, Tanabe N, Terada J, Yanagawa N, Shimizu H, Matsubara H, Hoshino S, Fujikawa A, Mizuno S, Yatomi M, Sakao S, Uruma T, Kasahara Y, Takiguchi Y, Tatsumi K, Kuriyama T. Multidetector-Row Computed Tomography Management of Acute Pulmonary Embolism. Circ J 2007; 71:1948-54. [DOI: 10.1253/circj.71.1948] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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66
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Shuto K, Okazumi S, Mochizuki Y, Hayano K, Aoyagi T, Narushima K, Sato A, Saito H, Ochiai T, Yanagawa N. 151 POSTER Electrocardiogram-gated MDCT for pericardial invasion of esophageal squamous cell cancer for the purpose of imagenavigation surgery. Eur J Surg Oncol 2006. [DOI: 10.1016/s0748-7983(06)70586-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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67
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Matsubara K, Cho A, Okazumi S, Makino H, Mochizuki R, Shuto K, Kudo H, Tohma T, Gunji H, Hayano K, Yanagawa N, Ochiai T. Anatomy of the middle hepatic vein: applications to living donor liver transplantation. HEPATO-GASTROENTEROLOGY 2006; 53:933-7. [PMID: 17153456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
BACKGROUND/AIMS In living donor liver transplantation, right lobe graft without a middle hepatic vein (MHV) results in potential venous congestion in the anterior segment, while transplantation with MHV represents an important ethical issue from the perspective of donor safety. The present study assessed ramification patterns of the MHV and relationships between hepatic venous drainage of the anterior and medial segments, to plan optimal harvesting of the right lobe as a graft. METHODOLOGY The authors reviewed 102 patients with normal livers who underwent contrast-enhanced multi-detector row CT. RESULTS The hepatic vein that drained S4sup (V4sup) joined only the left hepatic vein (LHV) in 60 patients (58%), only the MHV in 25 (25%), and both LHV and MHV in 17 (17%). Both V4sup and the hepatic vein that drained S8 (V8) joined the MHV in 42 patients (42%), and V8 joined proximal to V4sup in 18 of these 42 patients. CONCLUSIONS In donation of a right lobe graft including MHV, preservation of V4sup in the remnant donor liver seems possible in most donors.
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Hayano K, Okazumi S, Shuto K, Mochizuki R, Aoyagi T, Narushima K, Sato A, Kazama T, Yanagawa N, Ochiai T. 135 POSTER Prediction of the response to chemoradiation therapy (CRT) in esophageal squamous cell carcinoma by Perfusion CT. Eur J Surg Oncol 2006. [DOI: 10.1016/s0748-7983(06)70570-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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69
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Shuto K, Okazumi S, Motiduki R, Hayano K, Aoyagi T, Narushima K, Sato A, Saito S, Ochiai T, Yanagawa N. 134 POSTER Electrocardiogram-gated MDCT for pericardial invasion of oesophageal squamous cell cancer for the purpose of image-navigation surgery. Eur J Surg Oncol 2006. [DOI: 10.1016/s0748-7983(06)70569-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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70
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Funabashi N, Koide K, Mizuno N, Nagamura K, Ochi S, Yanagawa N, Okamoto Y, Uno K, Komuro I. Influence of heart rate on the detectability and reproducibility of multislice computed tomography for measuring coronary calcium score using a pulsating calcified mock-vessel in comparison with electron beam tomography. Int J Cardiol 2006; 113:113-7. [PMID: 16297995 DOI: 10.1016/j.ijcard.2005.08.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2005] [Accepted: 08/06/2005] [Indexed: 11/29/2022]
Abstract
BACKGROUND The influence of heart rate on detectability and reproducibility of multislice computed tomography (MSCT) for measuring coronary calcium score was evaluated using pulsating calcified mock-vessels and compared with electron beam tomography (EBT). MATERIALS AND METHODS Four calcified mock-vessels with 200-350 HU were made to pulsate at a rate of 40-80 beat/min. Retrospective ECG-gating MSCT (Light Speed Ultra 16) scanning with 0.625 mm slice-thickness was performed twice at each pulsation rate. For comparison, EBT (Imatron C150 XP) was performed with 3 and 1.5 mm beam collimation with prospective ECG-gating and calcium scores were measured. RESULTS The comparison revealed that MSCT did not have better reproducibility than EBT, but the calcium scores with MSCT were less influenced by pulsation rates than those with EBT. Especially in mild calcification, the calcium scores decreased with EBT with 3 mm beam collimation with increasing pulsation rate, but the scores were stable in any rate with MSCT. CONCLUSION MSCT effectively detects coronary calcification, especially mild calcification, without being influenced by heart rate. This is accomplished by reducing the partial volume effect in the through plane using sub millimeter slice thickness, and using appropriate reconstruction methods, which improve temporal resolution.
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Suzuki K, Shiono S, Kato H, Yanagawa N, Sato T. [Small sclerosing hemangioma combined with primary lung cancer; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2006; 59:590-3. [PMID: 16856537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A 56-year-old woman underwent a surgery for right breast cancer when she was 51-year-old. In February 2002, computed tomography (CT) was performed as a part of a follow-up study and showed 2 small nodules in the lower lobe of her right lung: one was 10 mm nodule in S9, and another was 5 mm in S6. On a follow-up CT in March 2005, the S9 nodule had enlarged to 19 mm and was looked as ground glass opacity (GGO). We thought it was primary lung cancer. In contrast, the nodule in S6 had not enlarged and it was thought to be benign. In May 2005, right lower lobectomy was performed. The S9 nodule was diagnosed as adenocarcinoma, and the S6 nodule as sclerosing hemangioma.
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Yanagawa N. [CT diagnosis in an orthopedics domain]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2006; 62:679-91. [PMID: 16767825 DOI: 10.6009/jjrt.62.679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
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Yanagawa N, Sasou S, Sato T, Shiono S, Kato H. [Mediastinal granular cell tumor: report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2006; 59:418-21. [PMID: 16715895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Mediastinal granular cell tumor is rare. We report a case of 16-year-old woman with a granular cell tumor in the right upper-middle mediastinum. Chest computed tomography (CT) and magnetic resonance imaging (MRI) revealed a 4.0 x 2.5 x 5.5 cm well circumscribed mass in the right upper-middle mediastinum. Tumor resection was performed. It was found that the tumor involved right vagus nerve. The tumor was completely excised with combined resection of the right vagus nerve peripheral to the right recurrent nerve. Histopathologically, the tumor consisted of round to polygonal cells with abundant eosinophilic granular cytoplasm, and diagnosed a granular cell tumor.
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Shiono S, Masaoka T, Sato T, Yanagawa N. [Positron emission tomography (PET)-computed tomography (CT) suggesting small intestinal metastasis from lung cancer; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2006; 59:426-9. [PMID: 16715897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A 75-year-old man admitted to our hospital due to an abnormal X-ray shadow detected during an annual health check-up. Chest computed tomography (CT) revealed 3.0 cm solid nodules with chest wall invasion in the left lung. We could not get a definitive diagnosis by transbronchial lung biopsy or CT-guided needle biopsy. Positron emission tomography (PET)-CT revealed positive findings in the tumor, aortopulmonary window lymph node and splenic flexure. Under a diagnosis of suspected lung cancer, thoracotomy was performed. As intraoperative diagnosis revealed a moderately differentiated squamous cell carcinoma, the patient underwent a left upper lobectomy, mediastinal lymph node dissection, and combined chest wall resection. Pathological stage was T3N2M0, stage IIIA. Ten days after surgery, the patient suffered from ileus and emergent surgery was performed. Subsequent pathological examination revealed lung cancer metastasis in the small intestine.
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Maruyama M, Shiono S, Kato H, Sato T, Yanagawa N. [Surgical resection of metachronous multiple lung cancer after complete response of small cell lung cancer; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2006; 59:164-7. [PMID: 16482915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A 76-year-old man underwent combination chemotherapy with cisplatin and etoposide and 50 Gy radiotherapy for left-sided small cell lung cancer in 1999. He achieved clinical complete response and showed no sign of recurrence on follow-up study. In December 2004, chest computed tomography (CT) revealed a 1 cm nodule in the right lung. Although no diagnosis could be made by bronchoscope, we suspected metachronous multiple lung cancer because of high 18fluorodeoxyglucose uptake with positron emission tomography (PET). The patient underwent video-assisted thoracoscopic surgery in May 2005; the frozen section diagnosis was adenocarcinoma.
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