A variant of Desbuquois dysplasia characterized by advanced carpal bone age, short metacarpals, and elongated phalanges: Report of seven cases

2010 ◽  
Vol 152A (4) ◽  
pp. 875-885 ◽  
Author(s):  
Ok-Hwa Kim ◽  
Gen Nishimura ◽  
Hae-Ryong Song ◽  
Yoshito Matsui ◽  
Satoru Sakazume ◽  
...  
Keyword(s):  
Bone Age ◽  
Carpal Bone ◽  
Desbuquois Dysplasia

Carpal Bone Segmentation Using Fully Convolutional Neural Network

2019 ◽  
Vol 15 (10) ◽  
pp. 983-989
Author(s):  
Liang Kim Meng ◽  
Azira Khalil ◽  
Muhamad Hanif Ahmad Nizar ◽  
Maryam Kamarun Nisham ◽  
Belinda Pingguan-Murphy ◽  
...  
Keyword(s):  
Neural Network ◽  
Convolutional Neural Network ◽  
Automatic Segmentation ◽  
Ground Truth ◽  
Bone Age ◽  
Image Feature ◽  
Qualitative Assessment ◽  
Carpal Bone ◽  
Radiographic Images ◽  
Accurate Quantitative Analysis

Background: Bone Age Assessment (BAA) refers to a clinical procedure that aims to identify a discrepancy between biological and chronological age of an individual by assessing the bone age growth. Currently, there are two main methods of executing BAA which are known as Greulich-Pyle and Tanner-Whitehouse techniques. Both techniques involve a manual and qualitative assessment of hand and wrist radiographs, resulting in intra and inter-operator variability accuracy and time-consuming. An automatic segmentation can be applied to the radiographs, providing the physician with more accurate delineation of the carpal bone and accurate quantitative analysis. Methods: In this study, we proposed an image feature extraction technique based on image segmentation with the fully convolutional neural network with eight stride pixel (FCN-8). A total of 290 radiographic images including both female and the male subject of age ranging from 0 to 18 were manually segmented and trained using FCN-8. Results and Conclusion: The results exhibit a high training accuracy value of 99.68% and a loss rate of 0.008619 for 50 epochs of training. The experiments compared 58 images against the gold standard ground truth images. The accuracy of our fully automated segmentation technique is 0.78 ± 0.06, 1.56 ±0.30 mm and 98.02% in terms of Dice Coefficient, Hausdorff Distance, and overall qualitative carpal recognition accuracy, respectively.

scholarly journals Computerized geometric features of carpal bone for bone age estimation

2007 ◽  
Vol 120 (9) ◽  
pp. 767-770 ◽  
Author(s):  
Chi-Wen Hsieh ◽  
Tai-Lang Jong ◽  
Yi-Hong Chou ◽  
Chui-Mei Tiu
Keyword(s):  
Age Estimation ◽  
Bone Age ◽  
Carpal Bone ◽  
Geometric Features

scholarly journals Carpal bone age with cleft lip and palate.

1985 ◽  
Vol 31 (4) ◽  
pp. 693-698
Author(s):  
Masayo KASUYA ◽  
Iwai TOHNAI ◽  
Hideharu SUZUKI ◽  
Toshio KANEDA ◽  
Tohru OKA
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Bone Age ◽  
Carpal Bone

Carpal bone analysis in bone age assessment

2006 ◽  
Author(s):  
Aifeng Zhang ◽  
Arkadiusz Gertych ◽  
Sylwia Kurkowska-Pospiech ◽  
Brent J. Liu ◽  
H. K. Huang
Keyword(s):  
Bone Age ◽  
Carpal Bone ◽  
Age Assessment ◽  
Bone Age Assessment

Secondary Fractures Following Internal Fixation in Two Horses

1989 ◽  
Vol 02 (03) ◽  
pp. 125-128
Author(s):  
E. M. Gaughan ◽  
N. G. Duchar
Keyword(s):  
Internal Fixation ◽  
Sagittal Plane ◽  
Proximal Phalanx ◽  
Fracture Repair ◽  
Fracture Line ◽  
Carpal Bone ◽  
Fracture Plane ◽  
The Third ◽  
Lag Screw ◽  
Secondary Fractures

SummaryImplant associated fractures have not been reported in horses. Two horses were evaluated for fractures in the fore limbs, occurring subsequent to previous fracture repair. Previously, the horses had sustained fractures of unusual configurations which were repaired using internal fixation. Following repair and healing of the fractures, secondary fractures occurred in the same bone, but in a different (more common) configuration. The first horse was evaluated ten months following lag screw fixation of a longitudinal fracture of the proximal phalanx in a frontal plane. This horse presented with a more typical comminuted fracture in the sagittal plane with the screws from the first fixation lying in the fracture line. This fracture was successfully treated with a cast. The second horse was examined eightteen months after repair of a medial sagittal slab fracture of the third carpal bone. The horse presented with a more typical dorsal slab fracture of the third carpal bone with the previously placed lag screw lying in the fracture line. The screw was removed and a lag screw was placed perpendicular to the new fracture plane through the dorsal surface of the third carpal bone to repair the fracture.

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