402 results on '"Ichikawa, Katsuhiro"'
Search Results
2. Validating computer applications for calculating spatial resolution and noise property in CT using simulated images with known properties
3. Quality improvement of images with metal artifact reduction using a noise recovery technique in computed tomography
4. Virtual monochromatic images of dual-energy CT as an alternative to single-energy CT: performance comparison using a detectability index for different acquisition techniques
5. Selection of Radiological Physics and Technology Awards 2023
6. A new magnetic resonance imaging grading system for anterior cruciate ligament myxoid degeneration in osteoarthritis of the knee
7. A challenge for high-speed and high-resolution CT for extremities with clinical feasibility
8. A tin filter’s dose reduction effect revisited: Using the detectability index in low-dose computed tomography for the chest
9. Task-specific spatial resolution properties of iterative and deep learning-based reconstructions in computed tomography: Comparison using tasks assuming small and large enhanced vessels
10. Image quality comparison of a nonlinear image-based noise reduction technique with a hybrid-type iterative reconstruction for pediatric computed tomography
11. Algorithm-based artifact reduction in patients with arms-down positioning in computed tomography
12. CT編 4. CT画像再構成法の歴史
13. Quality improvement of images with metal artifact reduction using a noise recovery technique in computed tomography
14. A new magnetic resonance imaging grading system for anterior cruciate ligament myxoid degeneration in osteoarthritis of the knee
15. Comparison of physical image qualities and artifact indices for head computed tomography in the axial and helical scan modes
16. Transbronchial biopsy of peripheral lung lesions using fluoroscopic guidance combined with an enhanced ray-summation display
17. A three-dimensional cross-directional bilateral filter for edge-preserving noise reduction of low-dose computed tomography images
18. A challenge for high-speed and high-resolution CT for extremities with clinical feasibility
19. Automated determination of cardiac rest period on whole-heart coronary magnetic resonance angiography by extracting high-speed motion of coronary arteries
20. Improvement of diagnostic performance of hyperacute ischemic stroke in head CT using an image-based noise reduction technique with non-black-boxed process
21. Radiation dose considerations in digital radiography with an anti‐scatter grid: A study using adult and pediatric phantoms
22. Optimizing image quality using automatic exposure control based on the signal-difference-to-noise ratio: a phantom study
23. Effective temporal resolution and image quality of volume scanning in 320-row detector CT
24. A New Contrast Enhancement Protocol for Subtraction Coronary Computed Tomography Requiring a Short Breath-Holding Time
25. Comparative evaluation of image quality among different detector configurations using area detector computed tomography
26. Double level derotation knee osteotomy for habitual patellar dislocation with femorotibial osteoarthritis in an adult
27. Preliminary Study on Sub-Pixel Rendering for Mammography Medical Grade Color Displays
28. Dose Reduction Protocol for Full Spine X-ray Examination Using Copper Filters in Patients With Adolescent Idiopathic Scoliosis
29. Assessment of temporal resolution of multi-detector row computed tomography in helical acquisition mode using the impulse method
30. Comparative assessment of noise properties for two deep learning CT image reconstruction techniques and filtered back projection
31. Clinical Usefulness of Super High-Resolution Liquid Crystal Displays Using Independent Sub-pixel Driving Technology
32. Kinematic radiography of the hip joint after hip resurfacing arthroplasty
33. Application of a variable filter for presampled modulation transfer function analysis with the edge method
34. Accuracy of computed tomography: magnetic resonance imaging image fusion using a phantom for skull base surgery
35. A comparative contrast perception phantom image of brain CT study between high-grade and low-grade liquid crystal displays (LCDs) in electronic medical charts
36. Spatial resolution measurement for iterative reconstruction by use of image-averaging techniques in computed tomography
37. Image quality dependence on in-plane positions and directions for MDCT images
38. Reduction of streak artifacts caused by low photon counts utilizing an image-based forward projection in computed tomography
39. A new stationary grid, with grid lines aligned to pixel lines with submicron‐order precision, to suppress grid artifacts
40. Osteochondral Peg Fixation for Chondral Fragment of the Knee in Adolescent Patients: A Report of Two Cases
41. Investigation of image lag and modulation transfer function in fluoroscopy images obtained with a dynamic flat-panel detector
42. Simulation system for understanding the lag effect in fluoroscopic images
43. Examination of the optimal temporal resolution required for computed tomography coronary angiography
44. Preliminary Study on Sub-Pixel Rendering for Mammography Medical Grade Color Displays
45. Review of a simple noise simulation technique in digital radiography
46. Development of a Noise Reduction Filter Algorithm for Pediatric Body Images in Multidetector CT
47. Observer Study for Evaluating Potential Utility of a Super-High-Resolution LCD in the Detection of Clustered Microcalcifications on Digital Mammograms
48. Preliminary investigation of the clinical usefulness of super-high-resolution LCDs with 9 and 15 mega-sub-pixels: observation studies with phantoms
49. Spatial resolution compensation by adjusting the reconstruction kernels for iterative reconstruction images of computed tomography
50. Signal-to-noise ratio improvements using anti-scatter grids with different object thicknesses and tube voltages
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