X-ray high resolution computed tomography for cultural heritage material micro-inspection

2021 ◽  
Author(s):  
Victory Jaques ◽  
Marek Zemek ◽  
Jakub Šalplachta ◽  
Tomáš Zikmund ◽  
Daniel Ožvoldík ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Cultural Heritage ◽  
High Resolution Computed Tomography ◽  
X Ray ◽  
Cultural Heritage Material

scholarly journals Comparative evaluation of mastoid pneumatization pattern using X-ray mastoid and high-resolution computed tomography temporal bone in unilateral squamosal chronic otitis media

2020 ◽  
Vol 6 (8) ◽  
pp. 1469
Author(s):  
Akanksha Dhiman ◽  
Ankur Gupta ◽  
Nishi Sharma ◽  
Akhilandeswari Prasad
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Temporal Bone ◽  
Otitis Media ◽  
Chronic Otitis Media ◽  
Anatomical Variations ◽  
High Resolution Computed Tomography ◽  
Mastoid Pneumatization ◽  
X Ray ◽  
Hrct Temporal Bone

<p class="abstract"><strong>Background:</strong> Chronic otitis media (COM) affects 0.5-30% of individuals in any community and over 20 million people are estimated to suffer from this condition worldwide. COM often evolves in a continuum. Squamosal disease is more commonly found in poorly pneumatized bones, but whether the sclerosis is relevant to the etiology of the disease or is caused by it, has not been fully resolved. Our study aimed at comparing the mastoid pneumatization patterns obtained using X-ray mastoid and high-resolution computed tomography (HRCT) temporal bone. It was an interventional study.</p><p class="abstract"><strong>Methods:</strong> Sixty patients of unilateral squamosal COM, aged more than 8 years, underwent X-ray mastoid Schuller’s view and HRCT temporal bone, using Philips extended brilliance 48 slice CT.  </p><p class="abstract"><strong>Results:</strong> Upon analysis, in diseased and healthy ears, the coincidence of X-ray and HRCT findings was 63.33% and 80% respectively.</p><p class="abstract"><strong>Conclusions:</strong> HRCT temporal bone should be done in all cases of squamosal COM to know the extent of the disease, pneumatization patterns and the presence of anatomical variations.  </p>

scholarly journals Evaluation of diffuse lung diseases by high resolution computed tomography of chest

2017 ◽  
Vol 5 (4) ◽  
pp. 1655
Author(s):  
Poonam Vohra ◽  
Harsumeet S. Sidhu
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Interstitial Pneumonia ◽  
Lung Diseases ◽  
Common Finding ◽  
High Resolution Computed Tomography ◽  
X Ray ◽  
Chest X Ray ◽  
Diffuse Lung Diseases ◽  
Diffuse Lung

Background: Diffuse lung diseases describe a heterogeneous group of disorders of the lower respiratory tract characterized by inflammation and derangement of the interstitium and loss of functional alveolar units. The disease is not restricted to the interstitium only, as it involves epithelial, endothelial and mesenchymal cells with the disease process extending into the alveoli, acini and bronchioles. Thus, the entire pulmonary parenchyma is involved. The objective of the study was to evaluate diffuse lung diseases by high resolution computed tomography of chest.Methods: A cross-sectional observational study was done in 30 patients. Adult patients of either sex of age group 18 and above showing reticular opacities on chest X-ray and those patients who were incidentally diagnosed as cases of diffuse lung diseases on HRCT chest were included in present study.Results: Reticular opacities were the most common roentgenographic finding followed by reticulonodular opacities. On HRCT, intra and interlobular septal thickening was the most common finding in Idiopathic interstitial pneumonia (usual interstitial pneumonia).Conclusions: High resolution computed tomography (HRCT) is superior to the plain chest X-ray for early detection and confirmation of suspected diffuse lung diseases. In addition, HRCT allows better assessment of the extent and distribution of disease, and it is especially useful in the investigation of patients with a normal chest radiograph. Coexisting disease is often best recognized on HRCT scanning.

Combined transmission and 99mTc-sestamibi emission tomography for localization of mediastinal parathyroid glands

2003 ◽  
Vol 42 (05) ◽  
pp. 220-223 ◽  
Author(s):  
G. Prager ◽  
O. Kienast ◽  
G. Dobrozemsky ◽  
R. Dudczak ◽  
B. Niederle ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Gamma Camera ◽  
Minimal Invasive ◽  
Parathyroid Glands ◽  
High Resolution Computed Tomography ◽  
X Ray ◽  
Ectopic Parathyroid ◽  
Mediastinal Parathyroid ◽  
99Mtc Sestamibi

Summary: Aim: Although parathyroid scintigraphy using 99mTc-sestamibi is considered the best preoperative localization method for hyperfunctioning parathyroid tissue it lacks the anatomical details required for successful, minimal invasive surgery of ectopic parathyroid lesions. This study presents the role of combined SPECT/X-ray-CT imaging in a single device for localization of mediastinal parathyroid glands. Methods: 99mTc-sestamibi SPECT/ X-ray-CT was performed by gamma camera-mounted anatomical X-ray tomography (GMAXT; GE Medical systems, Millenium VG with Hawkeye) in four patients with ectopic parathyroid glands (two patients with primary, two with persistent secondary hyperparathyroidism). The device contains an X-ray tube and a set of detectors that rotate around the patient combined with a gamma camera. For comparison with GMAXT additionally high resolution computed tomography images of the neck and mediastinum were performed. Results: Correct preoperative localization was achieved. The parathyroid glands were located in the anterior mediastinum. High resolution computed tomography could not provide further details. Three patients were operated by a minimal invasive open and one patient by a transsternal approach because of concomitant aortic valve replacement. Conclusion: 99mTc-sestamibi/X-ray-CT fusion imaging in a single device can accurately localise ectopic or supernumerary mediastinal parathyroid tumours in primary and secondary hyperparathyroidism. Morbidity, radiation exposure, time, and costs are reduced by avoiding multiple diagnostic examinations and minimal invasive parathyroid surgery becomes possible.

scholarly journals Chest x ray and high-resolution computed tomography in cystic fibrosis

2006 ◽  
Vol 91 (12) ◽  
pp. 1043-1043
Author(s):  
T G Kollamparambil ◽  
K Padua ◽  
J Fairhurst ◽  
G Connett
Keyword(s):  
Computed Tomography ◽  
Cystic Fibrosis ◽  
High Resolution ◽  
High Resolution Computed Tomography ◽  
X Ray ◽  
Chest X Ray
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