Visual detection of cortical breaks in hand joints: reliability and validity of high-resolution peripheral quantitative CT compared to microCT

As buildings wear out, external wall tiles or attachments will usually fall off, sometimes causing human injuries. At present, the method employed for middle-high rise buildings is mainly the method of visual inspection. The inspection results in using this method are affected by the factors of subjectivity, safety and cost. This study aims to provide a lowercost and more efficient evaluation method for inspecting the status of buildings’ external walls. This proposed method implements Forward Looking Infrared (FLIR) technology and high-resolution photographic equipment on Unmanned Aerial Vehicle (UAV) which can improve the image recording of the detection process, as well as the overall visual detection technology, and solve the existing visual detection problem of inspectors. Also, the images detected by visual inspection and UAV high-resolution video are used to develop a suitable visual evaluation process and test table for external walls. Through the test results of several cases, the deterioration status and needs for maintenance are taken into account according to the degree of performance indicators. The findings of the study is that the proposed mechanism is more efficient and lower cost for the detection of external walls or ancillary structures’ abnormal status, which is easy to use in practice.

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TU-A-12A-12: Improved Airway Measurement Accuracy for Low Dose Quantitative CT (qCT) Using Statistical (ASIR), at Reduced DFOV, and High Resolution Kernels in a Phantom and Swine Model

Medical Physics ◽

10.1118/1.4889258 ◽

2014 ◽

Vol 41 (6Part26) ◽

pp. 452-452

Author(s):

G Yadava ◽

Y Imai ◽

J Hsieh

Keyword(s):

High Resolution ◽

Measurement Accuracy ◽

Low Dose ◽

Swine Model ◽

Quantitative Ct

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TU-A-12A-11: Improved Airway Measurement Accuracy for Low Dose Quantitative CT (qCT) Using Statistical (ASIR), at Reduced DFOV, and High Resolution Kernels in a Phantom and Swine Model

Medical Physics ◽

10.1118/1.4889257 ◽

2014 ◽

Vol 41 (6Part26) ◽

pp. 452-452

Author(s):

A Rodriguez ◽

F Ranallo ◽

P Judy ◽

D Gierada ◽

S Fain

Keyword(s):

High Resolution ◽

Measurement Accuracy ◽

Low Dose ◽

Swine Model ◽

Quantitative Ct

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High-resolution peripheral quantitative computed tomography in children with osteogenesis imperfecta

Pediatric Radiology ◽

10.1007/s00247-020-04736-8 ◽

2020 ◽

Vol 50 (12) ◽

pp. 1781-1787

Author(s):

David J. Fennimore ◽

Maria Digby ◽

Margaret Paggiosi ◽

Paul Arundel ◽

Nick J. Bishop ◽

...

Keyword(s):

High Resolution ◽

Osteogenesis Imperfecta ◽

Bone Health ◽

Quantitative Computed Tomography ◽

Peripheral Quantitative Computed Tomography ◽

Dual Energy ◽

Clinical Implications ◽

Quantitative Ct ◽

Future Studies ◽

X Ray

Abstract Bone health in children with osteogenesis imperfecta is monitored using radiographs and dual-energy X-ray absorptiometry, which have limitations. High-resolution peripheral quantitative CT can non-invasively derive bone microarchitectural data. Children with severe osteogenesis imperfecta have fragile deformed bones, and positioning for this scan can be difficult. We assessed the feasibility of high-resolution peripheral quantitative CT in nine children aged 9–15 years with osteogenesis imperfecta and compared results with dual-energy X-ray absorptiometry and with healthy controls. All nine recruited children were successfully scanned and showed no preference for either modality. It therefore appears feasible to perform high-resolution peripheral quantitative CT in children with osteogenesis imperfecta aged 9 years and older. Future studies should focus on understanding the clinical implications of the technology in this patient cohort.

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The interobserver reliability of the diagnosis and classification of scaphoid fractures using high-resolution peripheral quantitative CT

The Bone & Joint Journal ◽

10.1302/0301-620x.102b4.bjj-2019-0632.r3 ◽

2020 ◽

Vol 102-B (4) ◽

pp. 478-484 ◽

Cited By ~ 2

Author(s):

Anne M. Daniels ◽

Caroline E. Wyers ◽

Heinrich M. J. Janzing ◽

Sander Sassen ◽

Daan Loeffen ◽

...

Keyword(s):

High Resolution ◽

Interobserver Agreement ◽

Interobserver Reliability ◽

Scaphoid Fracture ◽

Intraclass Correlation ◽

Correlation Coefficients ◽

Kappa Statistics ◽

Quantitative Ct ◽

Scaphoid Fractures

Aims Besides conventional radiographs, the use of MRI, CT, and bone scintigraphy is frequent in the diagnosis of a fracture of the scaphoid. However, which techniques give the best results remain unknown. The investigation of a new imaging technique initially requires an analysis of its precision. The primary aim of this study was to investigate the interobserver agreement of high-resolution peripheral quantitative CT (HR-pQCT) in the diagnosis of a scaphoid fracture. A secondary aim was to investigate the interobserver agreement for the presence of other fractures and for the classification of scaphoid fracture. Methods Two radiologists and two orthopaedic trauma surgeons evaluated HR-pQCT scans of 31 patients with a clinically-suspected scaphoid fracture. The observers were asked to determine the presence of a scaphoid or other fracture and to classify the scaphoid fracture based on the Herbert classification system. Fleiss kappa statistics were used to calculate the interobserver agreement for the diagnosis of a fracture. Intraclass correlation coefficients (ICCs) were used to assess the agreement for the classification of scaphoid fracture. Results A total of nine (29%) scaphoid fractures and 12 (39%) other fractures were diagnosed in 20 patients (65%) using HR-pQCT across the four observers. The interobserver agreement was 91% for the identification of a scaphoid fracture (95% confidence interval (CI) 0.76 to 1.00) and 80% for other fractures (95% CI 0.72 to 0.87). The mean ICC for the classification of a scaphoid fracture in the seven patients diagnosed with scaphoid fracture by all four observers was 73% (95% CI 0.42 to 0.94). Conclusion We conclude that the diagnosis of scaphoid and other fractures is reliable when using HR-pQCT in patients with a clinically-suspected fracture. Cite this article: Bone Joint J 2020;102-B(4):478–484.

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