conventional radiography
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2022 ◽  
Vol 9 (4) ◽  
pp. e089
Author(s):  
Ximena Torrico-Acha ◽  
Jhoana Mercedes Llaguno-Rubio

Monostotic fibrous dysplasia is a benign asymptomatic lesion that affects only one bone, which is replaced by amorphous connective tissue. Clinically there is an increase in the volume of the affected area, which is observed by imaging as a radiopaque area with diffuse non-corticalized limits capable of expanding to neighboring structures, and it is histologically evidenced as “resembling Chinese characters”. The lesion is seen as a radiopaque image with diffuse borders in conventional or digital radiography, while cone beam computed tomography identifies the exact location and extension of an isodense, mixed or hyperdense image of non-corticalized edges. Magnetic resonance imaging is also used when the lesion involves soft tissues or nerves, and bone scintigraphy is performed in order to systemically observe bone quality. The objective of this article was to describe the new technologies in oral radiology for the diagnosis of monostotic fibrous dysplasia and the importance of the current imaging methods in achieving an adequate diagnosis. These techniques range from conventional radiography to bone scans, which provide images of higher quality, clarity and better precision with less invasive techniques to the patient. This review of the literature helps to expand the knowledge of dental professionals in relation to the clinical and imaging characteristics of monostotic fibrous dysplasia.


Author(s):  
Ayesha Kamran ◽  
Wisam A. Razzak Al-Gorjia

Objective: With the collaboration of the trauma department, our study was designed to compare the effectiveness of ultrasonography (USG) and conventional radiography in the detection of bony fractures related to oral and maxillofacial regions. Methodology: This comparative study was conducted from March 2020 to March 2021 by the Radiology department of Sarghoda medical college hospital with the collaboration of the trauma department. Ultrasonography was performed by using GE- USG machine along with a linear extraoral transducer (frequency range 7-15 MHZ). Patients were asked to sit in a seated position facing the sinologist. Transducers were placed over the site by applying the sterile gel. Results: The overall sensitivity and specificity rate of ultrasonography was reported as 83.33% and 98.88% respectively in all sites whereas the sensitivity and specificity rate of conventional radiographs were reported as 70.24%, 100%. The negative predictive value of USG was reported as 96.17% along with 94.59% positive predictive value. In the contrast, conventional radiography gave a better positive predictive value (100%) than USG In our study we found better results of ultrasonography in terms of sensitivity and negative predictive value. Conclusion: In conclusion, our study depicts that ultrasonography is an economical, useful diagnostic tool for examining the bony fractures of facial trauma with a better sensitivity rate when compared to conventional radiographs.


Vestnik ◽  
2021 ◽  
pp. 252-255
Author(s):  
К.Х. Мухамеджанов

В данной статье представлены результаты клинических проявлений и рентгенологических исследований, перестройки костной ткани. Результаты наших исследований показали, что обычная рентгенография не решает всей проблемы диагностики стрессовых переломов напряжения. Мы в данной публикации выделяем те случаи, когда обычная рентгенография не в силах решить проблему диагностики и требует использования дополнительных методов лучевой диагностики. Исследование проведено на базе ЦГКБ г. Алматы. Под нашим наблюдением находились 11 (100%) больных, у которых заподозрено наличие перестройки костей. У 6 (54.5%) больных данные рентгенологического исследования указывали, на наличие стрессовой перестройки кости у 5 (45,5%) больных признаки были сомнительными. Применение компьютерной томографии (КТ) и динамическое рентгенологическое исследование позволило установить диагноз стрессовой перегрузки костей. This article presents the results of clinical manifestations and X-ray studies of the bone remodeling. The results of our research have shown that conventional radiography does not solve the entire problem of diagnosing stress fractures of tension. In this publication, we highlight those cases when conventional radiography is unable to solve the diagnostic problem and requires the use of additional methods of radiation diagnostics. The research was carried out on the basis of the Central City Clinical Hospital of Almaty. We observed 11 (100%) patients in whom the presence of bone remodeling was suspected. In 6 (54.5%) patients, X-ray examination data indicated that the presence of stress bone remodeling in 5 (45.5%) patients were dubious. The use of computed tomography analysis (CT) and dynamic X-ray examination made it possible to establish the diagnosis of bone stress overload.


2021 ◽  
pp. 089875642110665
Author(s):  
Lenin A. Villamizar-Martinez ◽  
Cristian M. Villegas ◽  
Marco A. Gioso ◽  
Carina Outi Baroni ◽  
Silvana M. Unruh ◽  
...  

Radiographic assessment of the temporomandibular joint in the domestic cat using conventional radiographic views can be challenging due to superimposition of overlying structures and the complex anatomy of the skull. The use of computed tomography, magnetic resonance imaging, and cone beam computed tomography to assess the temporomandibular joint in the cat has increased, but these modalities are not always available in general veterinary practices. Conventional radiography is still commonly used for first line assessment of the temporomandibular joint. The aim of this preliminary study was to determine optimal angle of obliquity of lateroventral-laterodorsal and laterorostral-laterocaudal (nose up lateral oblique) oblique radiographic views in the assessment of the temporomandibular joints in five feline mesaticephalic dry skulls. Visibility of the mandibular head, mandibular fossa, retroarticular process, and temporomandibular joint space were evaluated and scored by two veterinary radiologists. The results of this study identified that the dependent temporomandibular joint anatomy was best seen on the latero-10°-ventral-laterodorsal, latero-15°-ventral-laterodorsal, and latero-20°-ventral-laterodorsal, oblique views, and opposite lateral oblique views at these angulations may be helpful in characterization of this anatomy in clinical patients. The results also indicate that the laterorostral-laterocaudal (nose up lateral oblique) oblique view did not allow adequate discrimination of all TMJ anatomy at any angle, and is not recommended.


2021 ◽  
pp. 110066
Author(s):  
Sanaa M. Ghoneam ◽  
K.R. Mahmoud ◽  
H.M. Diab ◽  
Ahmed El-Sersy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Gabriel Adelsmayr ◽  
Andreas Haidmayer ◽  
Christopher Spreizer ◽  
Michael Janisch ◽  
Franz Quehenberger ◽  
...  

Abstract Background Imaging of morphologic changes in the vertebral spine in axial spondyloarthritis (SpA) is routinely performed with conventional radiography limited by superposition in the thoracic segments and radiation exposure. The objective was to assess the reliability of MRI compared to conventional radiography in depicting morphologic vertebral lesions in patients with axial SpA. Forty patients diagnosed with axial SpA were included in this cross-sectional study. Patients underwent MRI of the whole spine with T1-weighted and TIRM sequences in the sagittal plane and conventional radiography of the cervical and lumbar spine in lateral projections. Morphologic changes (syndesmophytes and erosions) in the anterior vertebral endplates on MRI and conventional radiography were independently evaluated by two radiologists. Inter-modality and interobserver agreement were calculated using Cohen’s Kappa. Results Inter-modality agreement was low for cervical and lumbar syndesmophytes and erosions (κ ≤ 0.2 ± 0.07–0.1). Interobserver agreement on conventional radiography was highest for cervical and lumbar anterior syndesmophytes/bridging (κ = 0.92 ± 0.02–0.03). Syndesmophytes in thoracic anterior vertebral units were the most frequent MRI finding with a high interobserver agreement (κ = 0.83 ± 0.05). Conclusions In imaging morphologic changes in the spine in patients with axial SpA, MRI was shown to be not an equivalent substitute but a complementary imaging modality to conventional radiography. Conventional radiography seems superior to depict morphologic cervical and lumbar vertebral changes compared to MRI, whereas MRI may visualise morphologic lesions in the thoracic spine.


2021 ◽  
Vol 12 (12) ◽  
pp. 120-125
Author(s):  
Raju Singha ◽  
Chanchal Kumar Dalai ◽  
Deblina Sarkar

Background: Knee osteo-arthritis is widely prevalent in the elderly population in our society and associated with significant morbidity and poor quality of life. Early diagnosis of the condition can enable timely and proper care for the patients. Magnetic Resonance Imaging, CT Scan, Ultrasonography and plain radiography are the different modalities of imaging that are commonly used for detection and diagnosis of knee osteo-arthritis. Aims and Objectives: To find out the early osteoarthritic changes of knee by Magnetic Resonance Imaging and compare those findings with conventional radiography, high frequency USG and CT scan findings. Materials and Methods: Patients suffering from knee osteoarthritis (OA) as per American College of Rheumatology guideline criteria (n=56) underwent imaging of the knee using plain radiography, ultrasonography, CT scan and MRI. The imaging findings studied in the patients were joint space narrowing (JSN), meniscal abnormality, Baker’s cyst, cruciate ligament abnormality, knee effusion, subchondral cyst, and loose bodies. A comparison between radiography, CT scan and USG was done for the imaging findings with MRI as the reference standard. Z-test of proportionality was used to find statistically significant difference for the three imaging modalities. A P<0.05 was deemed statistically significant. Results: The mean age of the patients was 61 years (38 males). The tibiofemoral compartment was most commonly affected. CT scan was more sensitive than radiography in detecting sub-chondral cyst (P=0.018) and loose bodies (P=0.004). USG and MRI were equally sensitive in detecting knee effusion (P=0.22) and synovial thickening (P=0.10). CT scan and MRI were equally sensitive in detecting subchondral cyst (P=1.00) and loose bodies (P=0.22). Conclusion: While CT imaging was more sensitive for detection of subchondral cysts and loose bodies than conventional radiography, it was as sensitive as MRI in detecting these findings in the study group. Additional study is warranted to assess diagnostic performance of CT scan and MRI in the diagnosis and progression of knee OA.


2021 ◽  
Vol 25 (1) ◽  
Author(s):  
Monica Van Wijk ◽  
Michelle M. Barnard ◽  
Amanda Fernandez ◽  
Keith Cloete ◽  
Matodzi Mukosi ◽  
...  

Background: Although global use of medical imaging has increased significantly, little is known about utilisation trends in low- and middle-income countries (LMICs).Objectives: To evaluate changes over a decade in public sector diagnostic imaging utilisation at provincial level in a middle-income country.Method: A retrospective analysis of medical imaging utilisation in the Western Cape Province of South Africa in 2009 and 2019. Use of conventional radiography, ultrasonography (US), fluoroscopy, CT, MRI, digital subtraction angiography (DSA) and whole-body digital radiography was assessed by total studies and studies/103 people, for the whole province, the rural and metropolitan areas. Mammography utilisation was calculated for every 103 females aged 40–70 years.Results: The provincial population and total imaging investigations increased by 25% and 32%, respectively, whilst studies/103 people increased by 5.5% (256 vs 270/103), with marked variation by modality. Provincial US, CT and MRI utilisation/103 people increased by 111% (20 vs 43/103), 78% (10 vs 18/103) and 32% (1.9 vs 2.5/103) respectively, whilst use of fluoroscopy (3.6 vs 3.7/103) and mammography (14.2 vs 15.9/103 women aged 40–70 years) was steady and plain radiography decreased by 20% (216 vs 196/103). For CT, mammography and fluoroscopy, percentage utilisation increases/103 people were higher in the rural than metropolitan areas.Conclusion: Population growth is the main driver of overall imaging utilisation in our setting. The relatively constant imaging workload per 1000 people, albeit with increasing ultrasound, CT and MR utilisation, and decreasing use of plain radiography, reflects improved provincial imaging infrastructure, and appropriate use of available resources.


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