A CAD System for Screening X-ray Chest Radiography

Horväth, Gábor; Orbán, Gergely; Horváth, Ágnes; Simkó, G.; Pataki, Béla; Maday, Peter; Juhász, S.

doi:10.1007/978-3-642-03904-1_59

Cited by 15 publications

(7 citation statements)

References 7 publications

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“…For instance, if the spinous process is closer to the medial end of the right clavicle, the patient is rotated to the left and according to Herring [9], these relationships hold true regardless of whether the projection is in PA or AP chest radiograph. This method used to evaluate rotation on PA chest radiograph in this study was not in keeping with the methods adopted in similar studies conducted by Santosh et al [22] and Horvath et al [23]. Santosh et al [22] study adopted the use of principal riborientation to automatically detect rotation on chest radiograph.…”

Section: Discussionmentioning

confidence: 93%

“…According to them, their method was able to distinguish severally rotated chest radiographs from non-rotated ones and achieved a maximum accuracy of 92% [22]. In Horvath et al [23] study, they developed a Computer Aided Diagnosis (CAD) system for automatic evaluation of chest radiographs, and they reported that complete clavicle detection was impossible by CAD system. According to them, the medial epiphysis of the clavicle produces an almost invisible very dim shadow.…”

Section: Discussionmentioning

confidence: 99%

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The Impact of Body Morphology on Rotation on Chest Radiograph: A Single Centre Study

Ao¹,

Ugwu²,

Dc³

et al. 2020

Arch Med

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Background: Chest radiograph shows the anatomical structures of the thorax and it is one of the most frequently performed radiographic examinations globally. With accurate patient ' s positioning that is devoid of rotation and also putting patient's body morphology into consideration, chest radiograph revealed significant information of most abnormalities associated with the thoracic region. This study is aimed at evaluating the impact of body morphology on rotation in PA radiographs. Materials and methods: A prospective study design was adopted in this study to evaluate the effects of body habitus and body mass index on rotation identified in chest radiographs and was conducted in single centre in Lagos State, Nigeria from September 2018 to February 2019. Ethical approval for this study was obtained from the Institutional Research Review Board of the study centre. The procedure for the study was adequately explained to the subjects and their consents were properly sought. All standard protocols and techniques were adopted to obtain the PA chest radiographs by qualified Radiographer. The obtained information was treated with high level of confidentiality. Variables such as age, sex, Body Mass Index (BMI), body habitus and patterns of rotation were collected using data capture sheet. The obtained data were analyzed using Statistical Package for Social Sciences (SPSS) version 22. Both descriptive statistics (mean, standard deviation, pie chart and bar chart) and inferential (Chi-square) statistics were used for statistical analysis with p-value<0.05 set for level statistical significance. Results: Out of 200 participants, those with normal weight were highest 60 (30%). BMI showed statistically significant relationships with right and left rotations at (p<0.05). Sthenic body habitus was highest 100 (50%). Body habitus showed statistically significant relationships with right and left rotations at (p<0.05).Of the total participants, males were 48.5% (n=97), while females were 103 (51.5%). There was statistically significant relationship between gender and rotation at (X 2 =69.688, df=1 and p=0.000).Out of 98 cases of rotations identified in this study, 54.1% (n=53) were found to the right when compared to rotation to the left, which is 45(45.9%). Chisquare (X 2) test showed that there was statistically significance with these patterns of rotation at (X 2 =156.989, df=1 and p=0.000). Conclusion: Body morphology effect rotation on chest radiographs. Based on this study, we concluded that increment in BMI and body habitus are associated with increment in rotation on chest radiographs. Rotation on chest radiographs is more frequent in females. BMI, body habitus and gender should be considered when assessing a radiograph with rotation.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

The Impact of Body Morphology on Rotation on Chest Radiograph: A Single Centre Study

Ao¹,

Ugwu²,

Dc³

et al. 2020

Arch Med

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“…From a practical point of view, the automatic detection of clavicle heads and spinous processes needs to be precise since a small deviation with respect to the actual boundary can adversely affect the decision process. When compared with human performance, automatic state-of-the-art methods do not provide satisfactory clavicle boundary detection performance due to the large variation in intensity distributions in the clavicle region, the presence of shadows, and other pathology such as nodules Horváth et al (2009);van Ginneken et al (2006). Therefore, Suzuki et al (2006) recommend that the automatic systems be trained on large datasets.…”

Section: Context and Our Contributionmentioning

confidence: 99%

Automatically Detecting Rotation in Chest Radiographs Using Principal Rib-Orientation Measure for Quality Control

Santosh

Candemir

Jaeger

et al. 2015

Int. J. Patt. Recogn. Artif. Intell.

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We present a novel method for detecting rotated lungs in chest radiographs for quality control and augmenting automated abnormality detection. The method computes a principal rib-orientation measure using a generalized line histogram technique for quality control, and therefore augmenting automated abnormality detection. To compute the line histogram, we use line seed filters as kernels to convolve with edge images, and extract a set of lines from the posterior rib-cage. After convolving kernels in all possible orientations in the range [0°, 180°), we measure the angle with maximum magnitude in the line histogram. This measure provides an approximation of the principal chest rib-orientation for each lung. A chest radiograph is upright if the difference between the orientation angles of both lungs with respect to the horizontal axis is negligible. We validate our method on sets of normal and abnormal images and argue that rib orientation can be used for rotation detection in chest radiographs as an aid in quality control during image acquisition. It can also be used for training and testing data sets for computer aided diagnosis research, for example. In our experiments, we achieve a maximum accuracy of approximately 90%.

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“…64 Horváth Tibor szerint az életveszélyt okozó testi sértés kísérletének megállapítására akkor van mód, ha az eszköz jellegéből, az elkövetés módjából, a véghezvitel körülményeiből, a sérülés célba vett helyéből és az elkövetésnél szerepet játszó egyébkörülményekből egyértelműen megállapítható, hogy az élet kioltására irányuló szándék nélkül ugyan, de testi sértésre irányuló határozott szándékkal intézett a sértett és a már említett körülmények folytán a tudata átfogta az életveszélyes sérülés bekövetkezésének a reális lehetőségét és abba legalábbis belenyugodva cselekedett, feltéve, hogy a rajta kívül álló okok hatása folytán nem következett be az eredmény. 65 Horváth felhívja az ítélkezési gyakorlatban az életveszélyt okozó testi sértés és az emberölés kísérletének elhatárolási nehézségeire. Szerinte az emberölés kísérlete esetében sok esetben életveszélyes sérülés jön létre, ezért a magatartás tényleges eredménye alapján történő elhatárolás nem lehetséges.…”

Section: Az éLetveszélyt Okozó Testi Sértés Az 1978évi IV Törvényben (A "Régi" Btk)unclassified

problémás szabályozási örökség az új anyagi büntetőkódexben: az életveszélyt okozó testi sértés

Kőhalmi

2013

DJM

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A Büntető Törvénykönyvről szóló 2012.évi C. törvény újabb jelentős szabályozástörténetiállomást jelent a magyar büntetőjogban. A szakzsargonban nemes egyszerűséggel, csak újBtk.-nak nevezett kódex különböző kritikákat kapott mind jogirodalom, mind a jogalkalmazásművelőitől.2 Az észrevételek azonban átsiklottak egy olyan szabályozási megoldás felett,amelynek létjogosultsága – véleményem szerint – meglehetősen vitatható. Az egymásnakfeszülő bírósági ítéleti indokolások is bizonyítják, hogy az életveszélyt okozó testi sértéstényállása az egyik legproblematikusabb szabályozási megoldás az „1978-as” büntető anyagikódexünkben. E tanulmányban a fenti téma körüljárására teszek kísérletet.

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A CAD System for Screening X-ray Chest Radiography

Cited by 15 publications

References 7 publications

The Impact of Body Morphology on Rotation on Chest Radiograph: A Single Centre Study

The Impact of Body Morphology on Rotation on Chest Radiograph: A Single Centre Study

Automatically Detecting Rotation in Chest Radiographs Using Principal Rib-Orientation Measure for Quality Control

problémás szabályozási örökség az új anyagi büntetőkódexben: az életveszélyt okozó testi sértés

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