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Current and Novel Techniques for Metal Artifact Reduction at CT: Practical Guide for Radiologists.
Katsura M, Sato J, Akahane M, Kunimatsu A, Abe O. Katsura M, et al. Radiographics. 2018 Mar-Apr;38(2):450-461. doi: 10.1148/rg.2018170102. Radiographics. 2018. PMID: 29528826 Review.
When x-rays pass through a metal object, depending on its size and composition, different physical effects negatively affect the measurements in the detector, most notably the effects of photon starvation and beam hardening. ...
When x-rays pass through a metal object, depending on its size and composition, different physical effects negatively affect the meas …
Amyotrophic lateral sclerosis: diffusion tensor tractography and voxel-based analysis.
Abe O, Yamada H, Masutani Y, Aoki S, Kunimatsu A, Yamasue H, Fukuda R, Kasai K, Hayashi N, Masumoto T, Mori H, Soma T, Ohtomo K. Abe O, et al. NMR Biomed. 2004 Oct;17(6):411-6. doi: 10.1002/nbm.907. NMR Biomed. 2004. PMID: 15386625 Clinical Trial.
A control group consisted of 11 age- and sex-matched volunteers (six women, 57.1 +/- 4.5) without disorders affecting the central nervous system. ...These clusters with significant FA decrease corresponded well to the average group map of the corticospinal tract in a
A control group consisted of 11 age- and sex-matched volunteers (six women, 57.1 +/- 4.5) without disorders affecting the central ner
A case of renal angioleiomyoma with rapid growing: CT findings with histopathological correlation.
Kunimatsu N, Kunimatsu A, Kojima K, Hirabayasi Y, Ohtomo K. Kunimatsu N, et al. Radiat Med. 2004 Nov-Dec;22(6):437-41. Radiat Med. 2004. PMID: 15648463
We present a rare case of renal angioleiomyoma with rapid growing during one-year and seven-months' follow-up. The CT findings correlated well with the histopathological findings. The patient was a 62-year-old man with right renal mass that was incidentally found on …
We present a rare case of renal angioleiomyoma with rapid growing during one-year and seven-months' follow-up. The CT findings correl …
Postsurgical spinal magnetic resonance imaging with iterative decomposition of water and fat with echo asymmetry and least-squares estimation.
Murakami M, Mori H, Kunimatsu A, Abe O, Chikuda H, Ono T, Kabasawa H, Uchiumi K, Sato J, Amemiya S, Komatsu S, Ohtomo K. Murakami M, et al. J Comput Assist Tomogr. 2011 Jan-Feb;35(1):16-20. doi: 10.1097/RCT.0b013e3181f8d30d. J Comput Assist Tomogr. 2011. PMID: 21245684
Iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL) is a new fat suppression method that is less affected by inhomogeneity of the magnetic field. ...
Iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL) is a new fat suppression method tha …
Impact of multiorgan fusion imaging and interactive 3-dimensional visualization for intraventricular neuroendoscopic surgery.
Kin T, Shin M, Oyama H, Kamada K, Kunimatsu A, Momose T, Saito N. Kin T, et al. Neurosurgery. 2011 Sep;69(1 Suppl Operative):ons40-8; discussion ons48. doi: 10.1227/NEU.0b013e318211019a. Neurosurgery. 2011. PMID: 21336214
OBJECTIVE: To evaluate the effectiveness of a 3-dimensional interactive visualization method with a computer graphics model, which was created using hybrid rendering and multimodal fusion methods for neuroendoscopic surgery, and to assess whether the 2-dimensional i …
OBJECTIVE: To evaluate the effectiveness of a 3-dimensional interactive visualization method with a computer graphics model, w …
Accelerated hippocampal volume reduction in post-menopausal women: an additional study with Atlas-based method.
Goto M, Abe O, Miyati T, Inano S, Hayashi N, Aoki S, Mori H, Kunimatsu A, Ino K, Iida K, Yano K, Ohtomo K. Goto M, et al. Radiol Phys Technol. 2011 Jul;4(2):185-8. doi: 10.1007/s12194-011-0120-7. Epub 2011 May 24. Radiol Phys Technol. 2011. PMID: 21604214
As a result, the present study revealed a significant difference bilaterally between the groups of females in their forties and those in their fifties. ...
As a result, the present study revealed a significant difference bilaterally between the groups of females in their forties an …
Repeatability of measured brain volume by atlas-based method using T1-weighted image.
Goto M, Miyati T, Abe O, Takao H, Kurosu T, Hayashi N, Aoki S, Mori H, Kunimatsu A, Ino K, Yano K, Ohtomo K. Goto M, et al. J Digit Imaging. 2012 Feb;25(1):173-8. doi: 10.1007/s10278-011-9412-z. J Digit Imaging. 2012. PMID: 21773867 Free PMC article.
As a result, the average percentage changes using non-smoothed image on each ROI were as follows: gray matter, 0.482%; white matter, 0.375%; cerebrospinal fluid images, 0.731%; hippocampus, 0.864%; orbital gyrus, 1.692%; cerebellum posterior lobe, 0.854%. ...
As a result, the average percentage changes using non-smoothed image on each ROI were as follows: gray matter, 0.482%; white matter, …
Precision of the measurement of CT numbers: comparison of dual-energy CT spectral imaging with fast kVp switching and conventional CT with phantoms.
Matsuda I, Akahane M, Sato J, Katsura M, Kiryu S, Yoshioka N, Kunimatsu A, Ino K, Ohtomo K. Matsuda I, et al. Jpn J Radiol. 2012 Jan;30(1):34-9. doi: 10.1007/s11604-011-0004-0. Epub 2011 Dec 2. Jpn J Radiol. 2012. PMID: 22135112
Conventional CT was performed at a tube voltage of 120 kVp. Simulated monochromatic images at 65 keV were obtained by dual-energy CT spectral imaging. ...A linear regression model was used to evaluate linearity, while analysis of covariance was used to investigate t …
Conventional CT was performed at a tube voltage of 120 kVp. Simulated monochromatic images at 65 keV were obtained by dual-energy CT …
Effect of radiation dose and adaptive statistical iterative reconstruction on image quality of pulmonary computed tomography.
Sato J, Akahane M, Inano S, Terasaki M, Akai H, Katsura M, Matsuda I, Kunimatsu A, Ohtomo K. Sato J, et al. Jpn J Radiol. 2012 Feb;30(2):146-53. doi: 10.1007/s11604-011-0026-7. Epub 2011 Dec 17. Jpn J Radiol. 2012. PMID: 22180184
Image pairs were obtained by factorial combination of images at a selected level. Using a 21-point scale, three experienced radiologists independently rated differences in quality between adjacently displayed paired images for image noise, image sharpness and conspi …
Image pairs were obtained by factorial combination of images at a selected level. Using a 21-point scale, three experienced ra …
Radiological features of IgG4-related disease in the head, neck, and brain.
Katsura M, Mori H, Kunimatsu A, Sasaki H, Abe O, Machida T, Ohtomo K. Katsura M, et al. Neuroradiology. 2012 Aug;54(8):873-82. doi: 10.1007/s00234-012-1012-1. Epub 2012 Feb 23. Neuroradiology. 2012. PMID: 22358111
INTRODUCTION: Immunoglobulin (Ig) G4-related disease is a recently designated benign clinical entity histopathologically characterized by sclerosing inflammation and infiltration of numerous IgG4+ plasma cells that affects multiple organs. ...METHODS: A total of 17 …
INTRODUCTION: Immunoglobulin (Ig) G4-related disease is a recently designated benign clinical entity histopathologically characterize …
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