Towards an Improved 3D Reconstruction by the Use of Automatic Bone Segmentation from CT Scan Images

In this work GPU implementation of classic 3D visualization algorithms namely Marching Cubes and Raycasting has been carried for cervical vertebra using VTK libraries. A proposed framework has been introduced for efficient and duly calibrated 3D reconstruction using Dicom Affine transform and Python Mayavi framework to address the limitation of benchmark visualization techniques i.e. lack of calibration, surface reconstruction artifacts and latency.

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Intra cranial volume quantification from 3D reconstruction based on CT-scan data

Computer Methods in Biomechanics & Biomedical Engineering ◽

10.1080/10255842.2017.1382870 ◽

2017 ◽

Vol 20 (sup1) ◽

pp. S81-S82

Author(s):

PM. François ◽

B. Sandoz ◽

S. Laporte ◽

P. Decq

Keyword(s):

3D Reconstruction ◽

Ct Scan ◽

Scan Data

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Aggregated model for tumor identification and 3D reconstruction of lung using CT-Scan

3C Tecnología_Glosas de innovación aplicadas a la pyme ◽

10.17993/3ctecno.2020.specialissue5.159-179 ◽

2020 ◽

pp. 159-179

Author(s):

Syed Abbas Ali ◽

Nazish Tariq ◽

Sallar Khan ◽

Asif Raza ◽

Syed Muhammad Faza-ul-Karim ◽

...

Keyword(s):

3D Reconstruction ◽

Ct Scan ◽

Tumor Identification ◽

Aggregated Model

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The Value of CT Three-Dimensional Reconstruction in Nursing and Diagnosis of Senile Hip Fracture

Journal of Healthcare Engineering ◽

10.1155/2021/7865155 ◽

2021 ◽

Vol 2021 ◽

pp. 1-4

Author(s):

Yuanyuan Shi ◽

Si Chen ◽

Xue Chen ◽

Pan Xue

Keyword(s):

Hip Fracture ◽

3D Reconstruction ◽

Ct Scan ◽

Three Dimensional ◽

The Elderly ◽

Three Dimensional Reconstruction ◽

X Ray ◽

Dimensional Reconstruction ◽

Bone Fragments ◽

Conventional Ct

Aim. To study the diagnostic effect of hip fracture in the elderly. In this paper, a total of 100 elderly patients with hip fracture from January 2020 to May 2021 were selected for X-ray and CT examination after admission. The operation was taken as the final criteria for determining hip fracture type, and the diagnosis of hip fracture by CT three-dimensional reconstruction was analyzed and studied. The results showed that the diagnostic rate of CT 3D reconstruction for various types of hip fracture in the elderly was higher than that of CT plain scan and X-ray ( P < 0.05 ). For the diagnosis of intra-articular small bone fragments, the rate of missed diagnosis was 2% (2/100) with CT 3D reconstruction, 10% (10/100) with conventional CT scan, and 20% (20/100) with X-ray. The rate of misdiagnosis was 5.0% (5/100) with CT 3D reconstruction. Routine CT scan was 15% (15/100), X-ray was 30% (30/100), and CT 3D reconstruction was significantly lower than other examinations ( P < 0.05 ). Conclusion. CT 3D reconstruction has high accuracy in the diagnosis of various types of hip fractures in the elderly.

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Automated 3D MRI Allows for Accurate Evaluation of Glenoid Bone Loss as Compared to 3D CT

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967118s00089 ◽

2018 ◽

Vol 6 (7_suppl4) ◽

pp. 2325967118S0008

Author(s):

Drew A. Lansdown ◽

Robert Dawe ◽

Gregory L. Cvetanovich ◽

Nikhil N. Verma ◽

Brian J. Cole ◽

...

Keyword(s):

Bone Loss ◽

3D Reconstruction ◽

Ct Scan ◽

Glenoid Bone Loss ◽

Ct Scans ◽

Reconstruction Method ◽

Slice Thickness ◽

3D Ct ◽

Ct Reconstruction ◽

3D Mri

Objectives: Glenoid bone loss is frequently present in the setting of recurrent shoulder instability. The magnitude of bone loss is an important determinant of the optimal surgical treatment. The current gold-standard for measurement of glenoid bone loss is three-dimensional (3D) reconstruction of a computed tomography (CT) scan. CT scans, however, carry an inherent risk of radiation and increased cost for a second modality. Magnetic resonance imaging (MRI) offers excellent soft tissue contrast and may allow resolution of bony structures to generate 3D reconstructions without a risk of ionizing radiation. We hypothesized that automated 3D MRI reconstruction would offer similar measurements of glenoid bone loss as recorded from a 3D CT scan in a clinical setting. Methods: A retrospective review was performed for fourteen patients who had both pre-operative MRI scan and CT scan of the shoulder. All MR scans were performed on a 1.5 T scanner (Siemens) utilizing a Dixon chemical shift separation sequence and the out-of-phase images with 0.90 mm slice thickness. Reconstructions of the glenoid were performed from axial images (Figure 1A) using an open-platform image processing system (3D Slicer; slicer.org). A single point on the glenoid was selected and a standard threshold was used to build a 3D model (Figure 1B). High-resolution CT scans underwent 3D reconstruction in Slicer based on Houndsfield Unit thresholding. Glenoid bone loss on both scans was measured with the Pico method by defining a circle of best fit using the inferior 2/3 of the glenoid and determining the percent area missing from this circle. Pearson’s correlation coefficient was utilized to determine the similarity between MR and CT based measurements. Statistical significance was defined as p<0.05. Results: The correlation between 3D MR and CT-based measurements of glenoid bone loss was excellent (r = 0.95, p<0.0001). The mean bone loss as measured by the 3D MR was 13.2 +- 7.2% and was 12.5 +- 8.6% for the 3D CT reconstruction (p=0.32). Bone loss in this cohort ranged from 3.7-25.4% on 3D MR and 1.4-26.0% on 3D CT. The root-mean-square difference between measurements was 2.7%. Conclusion: There was excellent agreement between automated 3D MR and 3D CT measurements of glenoid bone loss and minimal differences between these measurements. This reconstruction method requires minimal post-processing, no manual segmentation, and is obtained with widely-available MR sequences. This method has the potential to decrease the utilization for CT scans in determining glenoid bone loss. [Figure: see text]

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3D Reconstruction of Face from 2D CT Scan Images

Procedia Engineering ◽

10.1016/j.proeng.2012.01.952 ◽

2012 ◽

Vol 30 ◽

pp. 970-977 ◽

Cited By ~ 8

Author(s):

T.Senthil Kumar ◽

Anupa Vijai

Keyword(s):

3D Reconstruction ◽

Ct Scan

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EOS: A NEW IMAGING SYSTEM WITH LOW DOSE RADIATION IN STANDING POSITION FOR SPINE AND BONE & JOINT DISORDERS

Journal of Musculoskeletal Research ◽

10.1142/s0218957710002430 ◽

2010 ◽

Vol 13 (01) ◽

pp. 1-12 ◽

Cited By ~ 36

Author(s):

Jean Dubousset ◽

Georges Charpak ◽

Wafa Skalli ◽

Jacques Deguise ◽

Gabriel Kalifa

Keyword(s):

3D Reconstruction ◽

Ct Scan ◽

Low Dose ◽

Imaging System ◽

Standing Position ◽

Lower Limbs ◽

Whole Body ◽

X Rays ◽

Low Dose Radiation ◽

Dose Radiation

Very precise combined work between multidisciplinary partners (radiation engineers in physics, engineers in biomechanics, medical radiologists and orthopedic pediatric surgeons) has led to the concept and development of a new low-dose radiation device named EOS. This device has three main advantages: (1) Thanks to the invention of Georges Charpak who designed gaseous detectors for X-rays, the reduction of dose necessary to obtain a good image of skeletal system was 8 to 10 times less for 2D imaging; compared to the dose necessary to obtain a 3D reconstruction from CT scan cuts, the reduction factor was 800 to 1000. (2) The accuracy of 3D reconstruction obtained is better than that of 3D reconstruction from CT scan cuts. (3) The patient in addition gets imaged in a standing functional position, thanks to the AP and lateral X-rays obtained from head to feet simultaneously. This is a big advantage compared to CT scans which are used only in lying position. From the simultaneous AP and lateral X-rays of the whole body obtained via the 3D bone external envelop technique, the biomechanics engineers obtain 3D reconstruction of every level of osteo-articular system, especially for spine, in standing position with an acceptable period of time for reconstruction. This (in spite of the evolution of standing MRI) allows more precise bone reconstruction in orthopedics, especially at the level of the entire skeleton, including the head, spine, pelvis, lower limbs, giving new consideration for physiology, physiopathology and therapeutics.

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3D reconstruction from CT-scan volume dataset application to kidney modeling

Proceedings of the 27th Spring Conference on Computer Graphics - SCCG '11 ◽

10.1145/2461217.2461239 ◽

2013 ◽

Cited By ~ 1

Author(s):

Valentin Leonardi ◽

Vincent Vidal ◽

Jean-Luc Mari ◽

Marc Daniel

Keyword(s):

3D Reconstruction ◽

Ct Scan

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Leri-Weill Dyschondrosteosis Syndrome: Analysis via 3DCT Scan

Medicines ◽

10.3390/medicines6020060 ◽

2019 ◽

Vol 6 (2) ◽

pp. 60

Author(s):

Ali Al Kaissi ◽

Mohammad Shboul ◽

Vladimir Kenis ◽

Franz Grill ◽

Rudolf Ganger ◽

...

Keyword(s):

3D Reconstruction ◽

Ct Scan ◽

Short Stature ◽

Skeletal Dysplasia ◽

Lower Limbs ◽

Partial Closure ◽

Female Patients ◽

Coxa Valga ◽

Syndrome Analysis

Background: Leri-Weill dyschondrosteosis (LWD) is a pseudoautosomal form of skeletal dysplasia, characterized by abnormal craniofacial phenotype, short stature, and mesomelia of the upper and lower limbs. Methods: We describe two female patients with LWD. Their prime clinical complaints were severe bouts of migraine and antalgic gait. Results: Interestingly, via a 3D reconstruction CT scan we encountered several major anomalies. Notable features of craniosynostosis through premature fusion of the squamosal sutures and partial closure of the coronal sutures were the reason behind the development of abnormal craniofacial contour. A 3D reconstruction CT scan showed apparent bulging of the clavarium through the partially synostosed coronal and totally synostosed squamosal sutures. Additional deformities include deficient number of ribs (10 ribs on both sides), defective ossification of the ischium and dysplasia of the iliac-ischial junction, and coxa valga have been noted. Conclusions: The constellation of observed deformities can be considered as a novel features associated with LWD.

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