Masahiro Jinzaki


Affiliation: Keio University
Country: Japan


  1. Akita H, Kikuchi E, Hayakawa N, Mikami S, Sugiura H, Oya M, et al. Performance of diffusion-weighted MRI post-CT urography for the diagnosis of upper tract urothelial carcinoma: Comparison with selective urine cytology sampling. Clin Imaging. 2018;52:208-215 pubmed publisher
    ..001). The addition of DW-MRI would be useful for both mass-forming and wall-thickening lesions. DW-MRI has the potential to reduce the frequency of selective urine cytology sampling for such lesions. ..
  2. Jinzaki M, Hirano M, Hara K, Suzuki T, Yamashina A, Ikari Y, et al. A randomized, double-blind, placebo-controlled, phase II dose-finding study of the short acting ?1-blocker, landiolol hydrochloride, in patients with suspected ischemic cardiac disease. Int J Cardiovasc Imaging. 2013;29 Suppl 1:7-20 pubmed publisher
    ..The present findings suggest that landiolol hydrochloride is safe and useful at a dose of 0.125-mg/kg to improve coronary diagnostic performance during coronary CTA. ..
  3. Okuda S, Yamada Y, Tanimoto A, Fujita J, Sano M, Fukuda K, et al. Three-dimensional cardiac cine imaging using the kat ARC acceleration: Initial experience in clinical adult patients at 3T. Magn Reson Imaging. 2015;33:911-7 pubmed publisher
    ..6%, and 1.3±8.7g, respectively. Images obtained using the kat ARC 3D and conventional 2D cine techniques were equivalent in the detection of regional wall motion abnormalities and the evaluation of cardiac functional parameters. ..
  4. Yamada Y, Jinzaki M, Okamura T, Yamada M, Tanami Y, Abe T, et al. Feasibility of coronary artery calcium scoring on virtual unenhanced images derived from single-source fast kVp-switching dual-energy coronary CT angiography. J Cardiovasc Comput Tomogr. 2014;8:391-400 pubmed publisher
  5. Sakamoto Y, Soga S, Jinzaki M, Yamada Y, Ogata H, Kishi K. Evaluation of velopharyngeal closure by 4D imaging using 320-detector-row computed tomography. J Plast Reconstr Aesthet Surg. 2015;68:479-84 pubmed publisher
    ..The mean estimated radiation dose during 4D-CT was 4.44 ± 1.64 mSv. 4D-CT provides detailed morphological and kinematic analysis of VPC and may offer advantages over conventional procedures. ..
  6. Jinzaki M, Matsumoto K, Kikuchi E, Sato K, Horiguchi Y, Nishiwaki Y, et al. Comparison of CT urography and excretory urography in the detection and localization of urothelial carcinoma of the upper urinary tract. AJR Am J Roentgenol. 2011;196:1102-9 pubmed publisher
  7. Tanaka K, Saisho Y, Manesso E, Tanaka M, Meguro S, Irie J, et al. Effects of Liraglutide Monotherapy on Beta Cell Function and Pancreatic Enzymes Compared with Metformin in Japanese Overweight/Obese Patients with Type 2 Diabetes Mellitus: A Subpopulation Analysis of the KIND-LM Randomized Trial. Clin Drug Investig. 2015;35:675-84 pubmed publisher
    ..The University Hospital Medical Information Network (UMIN) Clinical Trials Registry ( ); UMIN000004243. ..
  8. Matsumoto S, Yamada Y, Hashimoto M, Okamura T, Yamada M, Yashima F, et al. CT imaging before transcatheter aortic valve implantation (TAVI) using variable helical pitch scanning and its diagnostic performance for coronary artery disease. Eur Radiol. 2017;27:1963-1970 pubmed publisher
    ..The average volume of contrast material was 38.7?±?8.5 mL. • The average attenuations of all the arteries were >400 HU. • This CT had a high sensitivity and NPV for excluding obstructive CAD. ..
  9. Jinzaki M, Silverman S, Akita H, Mikami S, Oya M. Diagnosis of Renal Angiomyolipomas: Classic, Fat-Poor, and Epithelioid Types. Semin Ultrasound CT MR. 2017;38:37-46 pubmed publisher
    ..Proper imaging technique, a thorough search for fat, and the appropriate use of percutanoeus biopsy are all needed to eliminate the unnecessary treatment of these benign neoplasms. ..

More Information


  1. Tamura M, Yamada Y, Kawakami T, Kataoka M, Iwabuchi Y, Sugiura H, et al. Diagnostic accuracy of lung subtraction iodine mapping CT for the evaluation of pulmonary perfusion in patients with chronic thromboembolic pulmonary hypertension: Correlation with perfusion SPECT/CT. Int J Cardiol. 2017;243:538-543 pubmed publisher
    ..0001). LSIM is a feasible technique for segment-based evaluation of pulmonary perfusion in patients with CTEPH, and it provides a significantly higher diagnostic accuracy compared with CTPA. ..
  2. Yamada Y, Ueyama M, Abe T, Araki T, Abe T, Nishino M, et al. Difference in the craniocaudal gradient of the maximum pixel value change rate between chronic obstructive pulmonary disease patients and normal subjects using sub-mGy dynamic chest radiography with a flat panel detector system. Eur J Radiol. 2017;92:37-44 pubmed publisher
    ..005). A decrease of the craniocaudal gradient of MPCR was observed in COPD patients. The craniocaudal gradient was lower in severe COPD patients than in mild COPD patients. ..
  3. Yamada Y, Ueyama M, Abe T, Araki T, Abe T, Nishino M, et al. Difference in diaphragmatic motion during tidal breathing in a standing position between COPD patients and normal subjects: Time-resolved quantitative evaluation using dynamic chest radiography with flat panel detector system ("dynamic X-ray phrenico. Eur J Radiol. 2017;87:76-82 pubmed publisher
  4. Okamura T, Yamada Y, Yamada M, Yamazaki A, Shiraga N, Jinzaki M. Image quality of virtual monochromatic images obtained using 320-detector row CT: A phantom study evaluating the effects of iterative reconstruction and body size. Eur J Radiol. 2017;95:212-221 pubmed publisher
    ..The image quality of VMS images with FBP reconstruction tended to be lower than that of the 120-kVp images. With the use of AIDR-3D, however, approximately 70-keV VMS images had a higher image quality than the 120-kVp images. ..