A Hybrid Technique for Thickness-Map Visualization of the Hip Cartilages in MRI
スポンサーリンク
概要
- 論文の詳細を見る
Quantification of the hip cartilages is clinically important. In this study, we propose an automatic technique for segmentation and visualization of the acetabular and femoral head cartilages based on clinically obtained multi-slice T1-weighted MR data and a hybrid approach. We follow a knowledge based approach by employing several features such as the anatomical shapes of the hip femoral and acetabular cartilages and corresponding image intensities. We estimate the center of the femoral head by a Hough transform and then automatically select the volume of interest. We then automatically segment the hip bones by a self-adaptive vector quantization technique. Next, we localize the articular central line by a modified canny edge detector based on the first and second derivative filters along the radial lines originated from the femoral head center and anatomical constraint. We then roughly segment the acetabular and femoral head cartilages using derivative images obtained in the previous step and a top-hat filter. Final masks of the acetabular and femoral head cartilages are automatically performed by employing the rough results, the estimated articular center line and the anatomical knowledge. Next, we generate a thickness map for each cartilage in the radial direction based on a Euclidian distance. Three dimensional pelvic bones, acetabular and femoral cartilages and corresponding thicknesses are overlaid and visualized. The techniques have been implemented in C++ and MATLAB environment. We have evaluated and clarified the usefulness of the proposed techniques in the presence of 40 clinical hips multi-slice MR images.
著者
-
Zoroofi Reza
Control and Intelligent Processing Center of Excellence, School of Electrical and Computer Engineeri
-
SATO Yoshinobu
Department of Chemistry, Faculty of Science and Engineering, Sophia University
-
KHANMOHAMMADI Mahdieh
Control and Intelligent Processing Center of Excellence, School of Electrical and Computer Engineeri
-
NISHII Takashi
Department of Orthopedic Surgery, Osaka University, Graduate School of Medicine
-
TANAKA Hisashi
Department of Radiology, Osaka University, Graduate School of Medicine
-
Nishii Takashi
Department Of Orthopaedic Medical Engineering Osaka University Graduate School Of Medicine
-
Khanmohammadi Mahdieh
Univ. Tehran Tehran Irn
関連論文
- Accurate Thickness Measurement of Two Adjacent Sheet Structures in CT Images(Advanced Image Technology)
- A novel automatic liver surface registration method using spherical harmonics (パターン認識・メディア理解)
- A novel automatic liver surface registration method using spherical harmonics (画像工学)
- A novel automatic liver surface registration method using spherical harmonics (医用画像)
- Behaviors of the One-Electron Reduction Species of {RuNO}^6-Type Complexes. An Oxygen-Transfer Reaction Occurs in the Nitrosyl Site of cis-[Ru(NO^・)X(bpy)_2]^ (X=ONO_2 for n=1, X=CH_3CN, H_2O for n=2)({RuNO}^7-Type) to Give an Identical Nitro Species^
- Reductions of {RuNO}^6-Type Nitrosyls. Characteristics of the Two-Electron Reduction Species Isolated as a Complex Having a Formally Negatively Charged μ-Nitrosyl({RuNO}^8-{RuNO}^8) and the One-Electron Reduction Species Generated Electrochamically({RuNO}
- Synthesis and Electrochemical Behavior of the Complex Having μ_2-Nitrosyl Moiety, as a Two-Electron Reduction Species of a {RuNO}^6-Type Nitrosyl,[{Ru(μ_2-NO)}_2(2,2-bipy)_4]^
- A Hybrid Technique for Thickness-Map Visualization of the Hip Cartilages in MRI
- Segmentation of liver in low-contrast images using K-means clustering and a priori knowledge (パターン認識・メディア理解)
- Segmentation of liver in low-contrast images using K-means clustering and a priori knowledge (画像工学)
- Segmentation of liver in low-contrast images using K-means clustering and a priori knowledge (医用画像)
- A rule based technique for liver segmentation in CT data (医用画像)
- Automated Determination of the Liver Boundary in CT Data Based on Anatomical Knowledge and Level Set Method
- Automated segmentation of the hip bones and cartilages in multi-slice CT images (医用画像)
- Automated visualization of femoral and acetabular cartilages in MR images of the hip (医用画像)
- A Knowledge Based Technique for Automatic Segmentation of the Hip Femoral Cartilage in CT Images
- Automated Segmentation of Acetabular Cartilage in MR images of the Hip(Joint Session 1)
- Validity and responsiveness of the Oxford hip score in a prospective study with Japanese total hip arthroplasty patients
- Clinical accuracy evaluation of femoral canal preparation using the ROBODOC system
- Localization of RANKL in osteolytic tissue around a loosened joint prosthesis
- Comparison of the fit and fill between the Anatomic Hip femoral component and the VerSys Taper femoral component using virtual implantation on the ORTHODOC workstation
- Correlation between femoral neck version and strain on the femur after insertion of femoral prosthesis
- Sciatic nerve palsy after cementless total hip arthroplasty. Treatment by modular neck and calcar shortening : a case report
- Femoral anteversion, femoral offset, and abductor lever arm after total hip arthroplasty using a modular femoral neck system
- Optimizing femoral anteversion and offset after total hip arthroplasty, using a modular femoral neck system : an experimental study
- 3D face modeling based on calibrated images for surgical analyzing (医用画像)
- Measurement of Free and Bound Alcohol Metabolites and Methanol in Human Biological Samples : free and bound alcohol metabolites and methanol in acute alcohol administration
- Phase-contrast MR Studies of CSF Flow Rate in the Cerebral Aqueduct and Cervical Subarachnoid Space with Correlation-based Segmentation
- Sleeping environments as risk factors of sudden infant death syndrome in Japan
- Case Report* MR Appearance of Hemangiopericytoma of the Thigh
- Automatic Facial Skin Segmentation Based on EM Algorithm under Varying Illumination
- A Hybrid Technique for Thickness-Map Visualization of the Hip Cartilages in MRI
- Optimization and validation of an image processing system in fluidized bed granulation
- IR absorption characteristics of an IR moisture sensor and mechanism of water transfer in fluidized bed granulation
- Control Granule Growth in Fluidized Bed Granulation by an Image Processing System
- Measurement of Moisture Content by IR Sensor in Fluidized Bed Granulation. Effects of Operating Variables on the Relationship between Granule Moisture Content and Absorbance of IR Spectra
- Control of moisture content by adaptive fuzzy control in agitation fluidized bed granulation
- APPLICATION OF FUZZY LOGIC TO MOISTURE CONTROL IN FLUIDIZED BED GRANULATION
- Corrigendum to "Determination of transverse relaxation rate for estimating iron deposits in central nervous system" [Neurosci. Res. 51 (2005) 67-71]
- Determination of transverse relaxation rate for estimating iron deposits in central nervous system
- Evaluation of intraoral CCD camera for dental examination in forensic inspection
- Electrical and Magnetic Properties of BETS Conductor with Modified λ-type Structure, λ'-(BETS)_2GaBr_4
- Syntheses and Crystal Structures of ET and BETS Salts Containing Bis(dithiosquarato)metalate Anions
- PREPARATION OF THE RESINS FOR THE COLLECTION OF THE POLLUTANTS BY THE CONVERSION OF THE ION-EXCHANGE RESIN WITH SOME TERFUNCTIONAL REAGENTS : APPLICATION TO THE COLLECTION OF MERCURIC, SELENITE, AND FLUORIDE IONS
- Automatic teeth recognition in multi-slice CT images (医用画像)
- Shape recognition and segmentation using active contour model and EM algorithm for MRI and color images (医用画像)
- Numerical analysis of similarities of particle behavior in high shear mixer granulators with different vessel sizes
- Operating Data and Unsolved Problems of the DICOM Modality Worklist : An Indispensable Tool in an Electronic Archiving Environment
- Direct Observation of the Orientational Fluctuations in a Tilted Smectic Liquid Crystal with a High-Speed TV Camera
- Low-Voltage, Low-Distortion and Rail-to-Rail CMOS Sample and Hold Circuit(Nonlinear Theory and its Applications)
- DNA analysis of neonatal human remains wrapped and kept in a vinyl bag for 15 years
- Cerebral Giant Aneurysm with Extensive Vasogenic Edelma
- Symptomatic Vertebral hemangioma: Atypical Spoke-Wheel Trabeculation Pattern
- Solitary Thyroid Metastasis of Renal Clear Cell Carcinoma : Report of a Case