3D-Computed Tomography Scans Applied in Lateral Ventricle Puncture and Its Potential Influential Factors in Pediatric Patients

2018 ◽  
Vol 8 (5) ◽  
pp. 1015-1020
Author(s):  
Fengjun Zhu ◽  
Yang Sun ◽  
Cong Li ◽  
Jingsheng Wang ◽  
Dongdong Zang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Lateral Ventricle ◽  
Pediatric Patients ◽  
Influential Factors ◽  
3D Computed Tomography ◽  
Computed Tomography Scans

scholarly journals Skull radiographs and computed tomography scans in children and adolescents with mild head trauma

2008 ◽  
Vol 66 (3b) ◽  
pp. 708-710 ◽  
Author(s):  
José Roberto Tude Melo ◽  
Rodolfo Casimiro Reis ◽  
Laudenor Pereira Lemos-Júnior ◽  
Assuero Azevedo-Neto ◽  
Dalton Willy Santos Oliveira ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Emergency Department ◽  
Head Trauma ◽  
Pediatric Patients ◽  
Trauma Centre ◽  
Cranial Computed Tomography ◽  
Trauma Patients ◽  
Computed Tomography Scans ◽  
Skull Radiographs ◽  
Multiple Traumas

OBJECTIVE: To identify which pediatric patients with mild head trauma are candidates for skull radiographs or cranial computed tomography (CCT) scans. METHOD: Patients with mild head trauma aged from 0 to 19 years presenting to the Emergency Department of a trauma centre from Salvador City, Brazil, between May 2007 and May 2008. RESULTS: A total of 1888 mild head trauma patients were admitted; mean age was 7.4 (±5.5) years. A total of 1956 skull radiographs and 734 CCT scans were performed. About 44.4% patients with Glasgow coma score (GCS) 13 and 55.4% with GCS 14 had abnormal CCT scans. In patients with multiple traumas, 16% had abnormal findings on CCT scans. CONCLUSION: We strongly recommend routine CCT studies to patients with GCS of 13 and 14 or to multiple trauma victims, independently of score. Routine screening skull radiographs were not useful in the evaluation of mild head trauma patients in this study.

Variability in total shoulder arthroplasty planning software compared to a control CT-derived 3D printed scapula

2019 ◽  
pp. 175857321988882
Author(s):  
Sarav S Shah ◽  
Shawn Sahota ◽  
Patrick J Denard ◽  
Matthew T Provencher ◽  
Bradford O Parsons ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Shoulder Arthroplasty ◽  
Total Shoulder Arthroplasty ◽  
Automated System ◽  
Glenoid Version ◽  
3D Computed Tomography ◽  
Planning Software ◽  
Computed Tomography Scans ◽  
3D Printed ◽  
Best Fit

Background Two techniques exist from which all 3D preoperative planning software for total shoulder arthroplasty are based. One technique is based on measurements constructed on the mid-glenoid and scapular landmarks (Landmark). The second is an automated system using a best-fit sphere technique (Automated). The purpose was to compare glenoid measurements from the two techniques against a control computed tomography-derived 3D printed scapula. Methods Computed tomography scans of osteoarthritic shoulders of 20 patients undergoing primary total shoulder arthroplasty were analyzed with both 3D planning software techniques. Measurements from a 3D printed scapula (Scapula) from the true 3D computed tomography scan served as controls. Glenoid version and inclination measurements from each group were blinded and reviewed. Results In 65% (Automated) and 45% (Landmark) of cases, either inclination or version varied by 5° or more versus 3D printed scapula. Significant variability in version differences compared to the scapula group existed (p = 0.007). Glenoid version from the Scapula = 13.0° ± 10.6°, Automated = 15.0° ± 13.9°, and Landmark = 12.2° ± 7.8°. Inclination from Scapula = 5.4° ± 7.9°, Automated = 6.1° ± 12.6°, and Landmark = 6.2° ± 9.1°. Discussion A high percentage of cases showed discrepancies in glenoid inclination and version values from both techniques. Surgeons should be aware that regardless of software technique, there is variability compared to measurements from a control 3D computed tomography printed scapula.

scholarly journals Paediatric CT Dose Optimization in a General Hospital

2019 ◽  
Vol 13 (1) ◽  
pp. 138
Author(s):  
Vivian Heidorne Guerra ◽  
Denise Yanikian Nersissian ◽  
Camila Souza Melo ◽  
Caio Vasconcellos ◽  
Rebeca Gonçalves Freitas ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pediatric Patients ◽  
Optimization Process ◽  
Diagnostic Image Quality ◽  
Dose Length Product ◽  
Diagnostic Image ◽  
Ct Dose ◽  
Computed Tomography Scans ◽  
Absorbed Radiation Dose ◽  
Computed Tomography Dose Index

This work presents a methodology for the optimization of protocols applied to pediatric patients who underwent brain and chest computed tomography examinations. The implementation of this methodology aims to reduce the dose of ionizing radiation delivered to patients and the consequent risk associated with radiation, without decreasing the diagnostic image quality. The comparison between the results of CTDIvol (computed tomography dose index) and DLP (dose-length product) dosimetric quantities before the optimization process and their corresponding results after the implementation of the optimization process was done through boxplot graphs. It is noteworthy that the implementation of this methodology allows reductions in the range between 18 and 50% of the dosimetric values evaluated in this study. In addition, the case of brain computed tomography scans, in which the cohort of the evaluated patients is larger, is a highlight, which should also reflect in the reduction of the absorbed radiation dose by this particularly important group of patients.

scholarly journals Deep Learning based Staging of Bone Lesions from Computed Tomography Scans (January 2021)

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Samira Masoudi ◽  
Sherif Mehralivand ◽  
Stephanie A. Harmon ◽  
Nathan Lay ◽  
Liza Lindenberg ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Deep Learning ◽  
Bone Lesions ◽  
Computed Tomography Scans

scholarly journals Aneurysm Arising at the Origin of a Duplicated Middle Cerebral Artery

2021 ◽  
pp. 446-450
Author(s):  
Jean Roch Alliez ◽  
Luis Manera
Keyword(s):  
Computed Tomography ◽  
Subarachnoid Haemorrhage ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
World Federation ◽  
Treatment Procedure ◽  
3D Computed Tomography ◽  
Ruptured Aneurysms ◽  
Tomography Reconstruction ◽  
Computed Tomography Reconstruction

A duplicated middle cerebral artery (DMCA) is a common anomaly. However, aneurysms arising from the origin of a DMCA are extremely rare. A 22-year-old female was admitted to our hospital with a World Federation of Neurosurgical Societies grade 2 subarachnoid haemorrhage. Four-vessel angiography revealed a DMCA and an aneurysm arising from the origin of this artery. The aneurysm was successfully treated by embolization, and the patient was discharged 2 weeks later. Ruptured aneurysms arising from the origin of a DMCA can be successfully treated by embolization. These aneurysms are small and 3D-computed tomography reconstruction is mandatory to detect them. It is important to preserve the DMCA during the treatment procedure.

Correlation between tympanometry volume and three-dimensional computed tomography mastoid volumetry in tympanoplasty candidates

2021 ◽  
pp. 1-5
Author(s):  
L Epprecht ◽  
L Qingsong ◽  
N Stenz ◽  
S Hashimi ◽  
T Linder
Keyword(s):  
Computed Tomography ◽  
Tympanic Membrane ◽  
Cell Volume ◽  
Radiation Injury ◽  
Three Dimensional ◽  
Non Invasive ◽  
Tympanic Membrane Perforations ◽  
Computed Tomography Scans ◽  
Air Cells ◽  
Mastoid Air Cells

Abstract Objective Ventilation of the middle ear and mastoid air cells is believed to play an important role in the pathogenesis of chronic ear disease. Traditionally, ventilation is assessed by computed tomography. However, this exposes patients to cumulative radiation injury. In cases with a perforation in the tympanic membrane, tympanometry potentially presents a non-invasive alternative to measure the ventilated middle-ear and mastoid air cell volume. This study hypothesised that total tympanometry volume correlates with ventilated middle-ear and mastoid air cell volume. Method Total tympanometry volume was compared with ventilated middle-ear and mastoid air cell volume on computed tomography scans in 20 tympanic membrane perforations. Results There was a high correlation between tympanometry and computed tomography volumes (r = 0.78; p < 0.001). A tympanometry volume more than 2 ml predicted good ventilation on computed tomography. Conclusion These results may help reduce the need for pre-operative computed tomography in uncomplicated cases with tympanic membrane perforations.

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