Feature-Based Registration of Thorax CT Scan Slices

Informatica ◽  
2017 ◽  
Vol 28 (3) ◽  
pp. 439-452
Author(s):  
Mykolas J. Bilinskas ◽  
Gintautas Dzemyda ◽  
Mantas Trakymas
Keyword(s):  
Ct Scan ◽  
Feature Based ◽  
Thorax Ct

scholarly journals Image Quality Differences In CT Scan Thorax By Using Slice Thickness Variation

2017 ◽  
Vol 8 (2) ◽  
pp. 87-91
Author(s):  
Samsun Samsun ◽  
Legia Prananto ◽  
Novita Wulandari
Keyword(s):  
Image Quality ◽  
Ct Scan ◽  
Spatial Resolution ◽  
Optimal Parameter ◽  
Thickness Variation ◽  
Slice Thickness ◽  
Picture Quality ◽  
Thorax Ct ◽  
Research Show ◽  
Selection Of

The picture quality get from CT Scan of Thorax which required optimal parameter selection that’s right, one of them the selection of slice thickness. The method taken from theses that have been publish in the year 2013. The results of the research show the percentage of the value of the average spatial resolution of 2.5 mm slice thickness is (33.3%), noise (17.8%), artefact (1%). On the thickness of the slices 5 mm spatial resolution is (17%), noise (8.9%), artefacts (0%). On the thickness of slices of 7.5 mm spatial resolution is (8.9%), noise (11.1%), artefacts (53.3%). While the thickness of the slices the spatial resolution is 10 mm (8.9%), noise (22.2%), artefacts (68.9%). Based on the research results obtained the conclusion that thickness 2.5 mm slices on Thorax CT-Scan images produce better picture quality than with the thickness of the slices 5 mm, 7.5 mm, 10 mm, because the spatial resolution is more clear so as to reduce noise and artifacts.

Thoax CT Scan as Invasive Fungal Infection (IFI) Screening In Neutropenic Patients, a Prospective-Retrospective Experience of It Impact on Therapeutic Intervention.

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 4554-4554
Author(s):  
Sebastian Sevilla ◽  
Gustavo Daniel Kusminsky ◽  
Mario Atilio Damiano ◽  
Miguel Rizzo ◽  
Jose Trucco
Keyword(s):  
Ct Scan ◽  
Conflicts Of Interest ◽  
Antimicrobial Treatment ◽  
Antifungal Treatment ◽  
Ct Scans ◽  
Diagnostic Tools ◽  
Persistent Fever ◽  
Pulmonary Infiltrates ◽  
Neutropenic Patients ◽  
Thorax Ct

Abstract Abstract 4554 Introduction: Persistent fever in high risk neutropenic patients (HRNF) after day 5 of empiric treatment is a sign of high susceptibility for IFI with elevated morbidity and mortality. Diagnostic tools in this setting are inaccurate to determine the occurrence of IFI and most patients start with empiric antifungal agents. Drugs are usually associated with increasing costs and toxicity. It is challenging to establish the population of patients in whom in spite of persistent fever and neutropenia, avoidance of antifungal treatment is a reasonable strategy. Methods: We have prospectively allocated 229 HRNF patients in different empiric antimicrobial regimens over a 4.5 year period. In a retrospective revision, there were 33 patients with persistent fever on day 5 of empirical antimicrobial treatment and no evident new infection episode or clinical impairment. In 28 patients, a thorax CT scan was performed as part of the evaluation of persistent fever. The clinical outcome was evaluated regarding the presence or absence of pulmonary infiltrates in the CT scans. Initial empiric antifungal treatment, transfusions, days in hospital, days with neutropenia, antimicrobial treatment, and days with fever were evaluated. Results: Nineteen patients (68%) of 28 presented with pulmonary infiltrates. All of them received antifungal treatment. In 9 patients with normal CT scan antifungal treatment was deferred. The difference of the decision in not giving antifungals according CT scans was highly significant (p <0,0001). Transfusions of red blood cells and platelets were significantly less in the group of normal scans (p 0,0004 and 0,005 respectively). Antimicrobial treatment, days in hospital and days with fever were not significantly different in both groups. There was one death in the normal scan group due to relapse. Mortality was not significantly different in both groups. Conclusion: In HRNP, normal thorax CT scan changed the clinical decision in not starting antifungal treatment in spite of persistent fever. There was no difference in mortality with patients under antifungal treatment, allowing continuing with this strategy in more patients in the future. Disclosures: No relevant conflicts of interest to declare.

scholarly journals Kanker Paru: Laporan Kasus

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Junita Joseph ◽  
Linda W. A. Rotty
Keyword(s):  
Lung Cancer ◽  
Physical Examination ◽  
Ct Scan ◽  
Malignant Tumors ◽  
Histopathological Examination ◽  
Bronchial Carcinoma ◽  
Bronchial Epithelium ◽  
Breath Sounds ◽  
The Right ◽  
Thorax Ct

Abstract: In general, lung cancer is all kinds of malignancy of the lung. It consists of malignancy derived from the lung itself (primary) and from out of the lung (metastasis). Clinically, primary lung cancers are malignant tumors derived from bronchial epithelium (bronchial carcinoma). Lung cancer is the main cause of death due to malignancy worldwide. We reported a male of 55-year-old male diagnosed as lung cancer. Diagnosis was based on anamnesis, physical examination, and supporting investigations. Anamnesis included smoking for 10 years ±15 cigarettes/day and complaints of shortness of breath, coughing, chest pain radiating to the back, and significant weight loss. Physical examination revealed enlargement of the right supraclavicular gland and decreased breath sounds in the right lung at the fifth intercostal space. Thorax photo, thorax CT-scan, and histopathological examination confirmed the diagnosis of lung cancer (adeno-carcinoma). Chemotherapy was administered with a combination of gemcitabine-cisplatin regimens for 12 cycles. The prognosis of this patient was poor because the disease had reached stage 4. However, the patient felt some clinical improvement after one month of chemotherapy.Keywords: lung cancer Abstrak: Kanker paru dalam arti luas adalah semua penyakit keganasan di paru, mencakup keganasan yang berasal dari paru sendiri (primer) maupun keganasan dari luar paru (metastasis). Dalam pengertian klinis yang dimaksud dengan kanker paru primer adalah tumor ganas yang berasal dari epitel bronkus (karsinoma bronkus). Kanker paru merupakan penyebab utama kematian akibat keganasan di dunia Kami melaporkan sebuah kasus kanker paru pada seorang laki-laki berusia 55 tahun. Diagnosis ditegakkan berdasarkan anamnesis, pemeriksaan fisik, dan pemeriksaan penunjang yang meliputi adanya riwayat merokok (sigaret) selama 10 tahun sebanyak ±15 batang rokok/hari, dengan sesak nafas, batuk, nyeri dada menjalar sampai ke punggung, dan penurunan berat badan yang nyata. Pada pemeriksaan fisik didapatkan pembesaran kelenjar supraklavikular kanan dan suara nafas menurun pada paru kanan setinggi sela iga V. Pada pemeriksaan penunjang foto toraks, thorax CT-scan, dan histopatologik didapatkan hasil yang menyokong diagnosis kanker paru (adenokarsinoma). Pada pasien ini, telah diberikan penata-laksanaan kemoterapi dengan kombinasi regimen gemcitabine-cisplatin selama 12 siklus. Progno-sis pasien ini buruk karena sudah sampai pada stadium 4, namun dengan kemoterapi yang dijalani sampai saat ini selama 1 bulan, pasien merasakan adanya perbaikan secara klinis.Kata kunci: kanker paru

914 Lung cancer and thorax CT scan findings

Lung Cancer ◽  
1997 ◽  
Vol 18 ◽  
pp. 232-233
Author(s):  
M. Bogossian ◽  
I.L. Santoro ◽  
S. Jamnik ◽  
R.T. Rodrigues ◽  
H. Tadokoro
Keyword(s):  
Lung Cancer ◽  
Ct Scan ◽  
Thorax Ct

scholarly journals Thorax CT scan of a COVID-19 patient

2020 ◽  
Vol 15 (3) ◽  
pp. 134-137
Author(s):  
Jorge Arturo Rodríguez-Reyna
Keyword(s):  
Ct Scan ◽  
Thorax Ct

scholarly journals Abses Paru Besar pada Hemotoraks Kanan

2017 ◽  
Vol 2 (2) ◽  
pp. 91-94
Author(s):  
Siti Fatima Azzahra ◽  
Anita Ekowati ◽  
Evi Artsini ◽  
Ajeng Visca Icanervilia
Keyword(s):  
Ct Scan ◽  
Lower Lobe ◽  
Plain Film ◽  
Malignant Cell ◽  
Lung Abscess ◽  
Microbial Infection ◽  
Pulmonary Tissue ◽  
X Ray ◽  
Chest X Ray ◽  
Thorax Ct

Lung abscess is defined as a localized area of necrosis of the pulmonary tissue and formation of cavities containing necrotic debris or fluid caused by microbial infection. Computed tomography (CT) scan allows optimal characterization of the lesion and effective evacuation. We reported a case of female patient, with chief complain of fever, recurring productive cough with blood, and shortness of breath that worsened since a week before admitted to hospital. The patient had these symptoms since 4 years ago and admitted to several other hospitals with similar problems. She denied any decreased of weight or nocturnal fever. In November 2016, we did a thorax CT scan and chest X-ray that revealed multiple round thick-walled and irregular cavities in lower lobe of right lung, measured 13.7 x 9.5 x 11.7 cm, air fluid level in each cavity, fluid component density is 9-15 HU with consolidation and caused deviation of cardiac position. Histopathology examination found suppurative chronic inflammation without malignant cell. After a throughout evaluation, the patient was diagnosed with tuberculosis infection and treated with anti tuberculosis drugs. In January 2017, a follow up thorax CT was done and revealed a decrease in size of lesion. The main purpose of this report is to show that plain film and thorax CT are useful examinations in assessing lung cavities entity, such as lung abscess. In this case, both CT and chest X-ray finding showed consistent results

scholarly journals Neutrophil-to-lymphocyte ratio, platelets-to-lymphocyte ratio, and eosinophils correlation with high-resolution computer tomography severity score in COVID-19 patients

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252599
Author(s):  
Milena Adina Man ◽  
Ruxandra-Mioara Rajnoveanu ◽  
Nicoleta Stefania Motoc ◽  
Cosmina Ioana Bondor ◽  
Ana Florica Chis ◽  
...  
Keyword(s):  
Ct Scan ◽  
Inflammatory Markers ◽  
Chest Ct ◽  
Neutrophil To Lymphocyte Ratio ◽  
Circulating Biomarkers ◽  
Lymphocyte Ratio ◽  
A Value ◽  
Thorax Ct ◽  
Chest Ct Scan ◽  
Future Management

Inflammation has an important role in the progression of various viral pneumonia, including COVID-19. Circulating biomarkers that can evaluate inflammation and immune status are potentially useful in diagnosing and prognosis of COVID-19 patients. Even more so when they are a part of the routine evaluation, chest CT could have even higher diagnostic accuracy than RT-PCT alone in a suggestive clinical context. This study aims to evaluate the correlation between inflammatory markers such as neutrophil-to-lymphocyte ratio (NLR), platelets-to-lymphocytes ratio (PLR), and eosinophils with the severity of CT lesions in patients with COVID-19. The second objective was to seek a statically significant cut-off value for NLR and PLR that could suggest COVID-19. Correlation of both NLR and PLR with already established inflammatory markers such as CRP, ESR, and those specific for COVID-19 (ferritin, D-dimers, and eosinophils) were also evaluated. One hundred forty-nine patients with confirmed COVID-19 disease and 149 age-matched control were evaluated through blood tests, and COVID-19 patients had thorax CT performed. Both NLR and PLR correlated positive chest CT scan severity. Both NLR and PLR correlated positive chest CT scan severity. When NLR value is below 5.04, CT score is lower than 3 with a probability of 94%, while when NLR is higher than 5.04, the probability of severe CT changes is only 50%. For eosinophils, a value of 0.35% corresponds to chest CT severity of 2 (Se = 0.88, Sp = 0.43, AUC = 0.661, 95% CI (0.544; 0.779), p = 0.021. NLR and PLR had significantly higher values in COVID-19 patients. In our study a NLR = 2.90 and PLR = 186 have a good specificity (0.89, p = 0.001, respectively 0.92, p<0.001). Higher levels in NLR, PLR should prompt the clinician to prescribe a thorax CT as it could reveal important lesions that could influence the patient’s future management.

scholarly journals PEMERIKSAAN RADIOLOGI GIANT BULLOUS LUNG DISEASE

2020 ◽  
Vol 6 (1) ◽  
pp. 12
Author(s):  
F Auzy
Keyword(s):  
Lung Disease ◽  
Ct Scan ◽  
Late Sequelae ◽  
Thorax Ct ◽  
Giant Bullae

Giant bullous lung disease  adalah suatu kondisi klinis yang ditandai oleh bullae berukuran besar yang volumenya cukup signifikan. Kriteria radiologi untuk kelainan tersebut adalah adanya giant bullae di satu atau kedua apeks paru, meliputi minimal sepertiga hemithorax dan mengkompresi parenkim paru normal di sekitarnya. Pada dewasa, faktor resikonya dapat berupa kebiasaan merokok, defisiensi alfa-1 antitripsin, sedangkan pada anak dapat disebabkan kondisi idiopatik, dan  late sequelae penyakit paru kronik yang terkait dengan kelahiran prematur. Giant bullae dapat terjadi akibat komplikasi dari emfisema. Pasien dengan bullae mungkin asimtomatik, namun dengan semakin membesarnya ukuran bullae, dapat menimbulkan keluhan dispneu, nyeri dada, maupun hemoptisis. Pemeriksaan radiologi untuk menegakkan diagnosis yaitu; foto thorax, ct scan thorax, ultrasonografi thorax, kedokteran nuklir dan angiografi

scholarly journals Analisis Variasi Teknik Overlap Data terhadap Citra Anatomi Axial CT-Scan Thorax pada Kasus Tumor Paru

2017 ◽  
Vol 3 (2) ◽  
pp. 245-247
Author(s):  
Dwi Sulistyowati ◽  
Jeffri Ardiyanto ◽  
Budi Prijo Witjaksono
Keyword(s):  
Ct Scan ◽  
Quantitative Study ◽  
Lung Tumor ◽  
Lung Tumors ◽  
Post Processing ◽  
Optimal Value ◽  
Anatomical Image ◽  
Axial Ct ◽  
Thorax Ct

Background : The data overlap technique is the distance between the reconstruction images on the Z axis. This technique is useful for reducing the partial effect of volume, where images will be better when post processing is 2D or 3D. The purpose of this research is to know the effect of data overlap technique  variation  on  axial anatomical  image of CT-Scan Thorax  of lung tumor case   and what is  the variation of data overlap technique can yield anatomical image with the best quality.Methods : This research is an quantitative study. Subjects in this study were patients with CT Scan Thorax examination in  cases of lung tumors amounted to 7 people. The results of the scanning that has been done and then recons of data overlap technique using the value of 2 mm, 4 mm, 6 mm and 8 mm then the reconstruction results are assessed by 2 radiologists.Results : it is known that the variation of data overlap significantly affect the quality of the resulting image. For the most optimal data overlap value on CT thorax CT scan with lung tumor case, 2 mm data overlap value has the best result compared to other values with mean rank is 3.99.Conclusion : Based on these results indicate that the variation of data overlap significantly affect the quality of the resulting image. Optimal value of reconstruction increment to see a metastatic pathology is 2 mm.

scholarly journals Pengaruh Variasi Pengaktifan Delay Bolus Triggering Terhadap Dosis Radiasi Pada Pemeriksaan CT Scan Thorax di Instalasi Radiologi RSUD Dr.Moewardi

2015 ◽  
Vol 1 (1) ◽  
pp. 6-9
Author(s):  
Rini Indrati ◽  
Mariyatun Mariyatun ◽  
Andrey Nino Kurniawan
Keyword(s):  
Radiation Dose ◽  
Ct Scan ◽  
Dose Calculation ◽  
P Value ◽  
Monitor Screen ◽  
Maximum Delay ◽  
Thorax Ct ◽  
Calculation Software ◽  
Activation Delay ◽  
Contrast Media Administration

Background : Examination of Thorax CT Scan in RSUD Dr.Moewardi is always conducted using bolus triggering technique, where delay of bolus triggering activation done to vary value between 5 - 10 second after contrast media administration using automatic injector with the reason to lessen radiation dose. Purpose of this research is to know influence of  bolus triggering activation delay to radiation dose as well as  to find out  maximal delay value of  bolus triggering activation delay which can be conducted at CT Scan Thorax examination.Methods : This research is experimental method. Data were collected from the observations and the direct examinations on the monitor screen using the CTDIvol dose calculation software. This research is carried out by recording the changes radiation dose value on CTDIvol by changing the value of  bolus triggering activation delay from 0, 2, 4,  6, 8, 10, 12 and 14 second. Data were analyzed using regression test.Results : The result shows that correlation between bolus triggering activation delay towards radiation dose with r = 0,970,  p value 0,001 and R2 = 0,940. The meaning 94% radiation dose influenced by bolus triggering activation. Delay with regresi equation, Y  = 308,252 - 18,821 DT, showing each every increase of delay bolus triggering activation delay equal to 1 second  will influence to descend dose radiasi equal to 18,821 mGy.Conclusion : Maximum delay to activated bolus triggering is 17 second.

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