 My name is Dr. Pumbak Chauhan Patel, Dean of resident government medical knowledge quota. Today my paper topic is evaluation of a high-resolution completed tomography pattern in lower respiratory tract infection and a differential diagnosis with clinical correlation. Active lower respiratory tract infections, LIDL, persistent and progressive health problems, they may cause a greater burden of disease worldwide than HIV infections, malaria, cancer and heart disease. Lower respiratory tract infections are frequently homogeneous and brought by microorganisms in patients, normal flora. The planned chest radiograph is smooth and smear and culture continue to be initial techniques of assessment in known the suspected case of LIDL. A group of symptoms known as a common cold cough occasionally fever are frequently linked to LIDL. The necessity to determine the patient's symptom consistent with pneumonia or just cell passivity, active bronchitis is one of the biggest issue. The chest radiography has become the current gold standard for this differentiation. However, there is inter-observer variability in the radiograph interpretation which limits the reliability of this test. When compared to what is the observed on chest radiograph, the real prevalence of infiltrator in LIDL is more than 1.5 times higher. Inspired CT and HRCT are therefore crucial for LIDL detections. The best imaging technique at the moment for assess lower respiratory tract infections, particularly small airway illnesses, HRCT. The bronchial F-tiny F2MM may be visible on HRCT. It is capable of imaging the lung parankymal with great exposure with resolution and revealing anatomic information equivalent to that found on growth pathological examinations. Fine interstitial features are provided by HRCT, which may also help to identify mild earlier, mild pneumonia earlier than the other methods. In immunocompromised individuals, their infection can certify overpower the weakened immune system, HRCT is particularly helpful. Thin slice and high spatial frequency may require construction algorithm are used in a HRCT processor. Various patterns including round glass opacity, decrease in discrete and confluent consolidation, air species nodule, peripuronchial vascular thickening, tree-in-bud pattern, tree-flim, tree-plural-sword and fractal thickening are shown on HRCT in lower respiratory tract infections. Nearly 20% patients may also have expeditly mosaic patterns which indicates the presence of coexisting small airway obstructions. MFM objectives to identify and describe the HRCT pattern of various lower respiratory tract infections. To create a strategy for differential diagnosis of lower respiratory tract infections, we have done the pattern and distribution of HRCT in patients with clinical correlations to identify and distinguish lower respiratory tract disease caused by infections from non-infectious sources, medical methods, then analytic course action is studied from 1st March, 2023 to 35 July, 2023, was done on 50 patients, prevented at department of radio diagnosis, government medical college and its associated group of hospital in Kota, 4-Chest, HRCT, which has series of LRTA. All patients are evaluated along the following lines and finding or reported on the separate performer. The first clinical assessment, second laboratory investigation, and third radiology regulation, chest, external HRCT. Inclusion and exclusion criteria. Inclusion criteria, all age group patients are suspicious of LRTA. Exclusion criteria, patients with neopastic pituitology of lung, patients not getting consent to be a part of history due to any reason. HRCT evolution. Each patient underwent series of HR5 evolution sequential axiom system of chest with 1 mm, collimation at a scan interval of 5 mm in full expiration. The following characteristics of lung involvement and coughed by lower respiratory tract infections are SF, chronic distribution of disease, likely upper mid and lower from PHA deficit involvement, predominant pattern of disease, and likely lateral, nodular, reticular, nodular, ulterior, opposite, cystic lesion, bronchial, septic, fibroeclid, fibrocavetary fibro, and fibrocalcidic changes. bronchial, bronchial disease with center of the nodules, ethylene, blood pattern nodules. bronchial disease with GGOs and acid pattern, volume of lung fill like ethylactic air vanishing lung, presence and type of septal thickening and septal calcification, presence and dispersion of honey combing is associated with fine interaction, bronchial disease and conglomerated fibroces, presence of global disease and fluval sickness, associated abnormalities like the presence of cardiomegaly, mediastinoma, hyalurgyrperivus, perivuscule, all the foreign features are evaluated in HRCT. Each case of HRCT results were compared with clinical supply and patients used laboratory tests to determine the diagnosis. Reverse HRCT was used to assess 15 devices who had a lower respiratory tract infection that was legally suspected. This is the HRCT image of the lung. Image number 1A shows the HRCT image of lung in 60-year-old male patients. We will multiple page areas of consultation surrounding multiple central ocular nodules with a tree and blood pattern scattered throughout the lung, perinchyma and lab-sided m-chyma with the right side medium and clover, few sub-centimetrical cells, the limbs not are seen in predracheal region. In this, it's put a positive case of tuberculosis. Image number 2B is a case of, it's put a positive case of tuberculosis. It's super-added fungal infections. It's an image number HRCT scan of lung in 32-year-old male patients. It represents multiple consultation pages with internal cavitation and multiple central ocular nodules with a tree and blood pattern seen in bilateral lung. Few of which shows internal hyperdense content, giving an air-resistant sign in existing cavities. This is also a confirmed case of a positive tuberculosis in patients super-added fungal infection. Image number 2A, 2B and 2C are HRCT images of lung. Image number 2A and 2C are axial images and 2B is a coronal image. It shows a lung 52-year-old male patient in a large area of consultation with cavities. It's seen in left upper and lower lobes with a few of cavities showing air-fuel level in left upper lobe area of consultation. It's found in GGOC in right middle of suggestive active case of bacterial cavities. Bacterial cavities in necrotizing pneumonia, culture-positive test for staph allococcal bacterial infection. The result, the table number 1 shows the distribution of cases. The most prevalent is the micro-bacterial infection of 48%. The second prevalent case is also LRTI is non-tubular bacterial infection in 32% cases. Sex distribution of LRTI patients. Male and female are slightly male predominance and the micro-bacterial infections also male predominance and non-tubular bacterial infections also male predominance. Image number 5G graph is shown. Second agent sex distribution of LRTI patients. The LRTI is most common in between 21 to 30 age group. 21 to 20% and second most common is 0 to 10% and 60%. This is the pie chart which shows the 20% of age group in between 21 to 30 and 16% in 0 to 10 years. Then clinical features in pattern in LRTI. The fever is, cough is the most common symptoms in LRTI. The second most common is the fever and the hemoptysis is likely 20% of cases to patients. In micro-bacterial infection, overall inducing micro-bacterial infection, fever is most common. And the non-tubular bacterial infection, fever is also 94% cases and viral infection almost all patients suffer from the fever. This is on level to investigation finding. This is in this diagram. The rate of TSU total WBC count elevation seen in 56% and second most common is a rate of ESR. If put on positive confirmed cases are 40% and positive montage test were 30% cases for overall LRTI cases. In among in micro-bacterial infections, most common symptom level to the features is the ESR and 71% cases. In micro-bacterial infections, 54% cases show positive is put on and 62% process of positive montage test. Predominant chest radios pattern is seen. The most predominant pattern is the cold consolidation like confident and robot consolidation pattern. Second is the next common is a nodular and reticular and reticular nodular and reticular capacities in chest. Then fever level is seen on level to 24% patients and chest in chest X-ray patterns. 60% cases is show likely a total number of total of 8 cases among 50% which chest X-ray is normal. This is the bar diagram. Bar diagram in fact lower consolidation and constant consolidation are most common in LRTI. Then predominant HRC pattern in patients LRTI. Conflict, lower and multifocal lower consolidation, globular consolidation is most common. Then the GGS also seen in 42% cases. Trains were seen appearing in 32% of cases. This is nearly no new seen in the number of 3 top patients which contributes to 6% of total cases. In cavitation also seen in HRC it is 36% patients. And lymphatic oncology occurs in 24% of patients. And this is the line diagram, line diagram of shows. Bar diagram shows that the boundary test is 36% mosaic attenuation 20%. And pluralism seen in 28%. Cavitation also seen in 36%. Trained body 32%. Lower consolidation is most common. In discussion mycobacterial infections appear to be most prevalent etiological category. With 24 cases out of 50, 48% of investigation with 60% cases 32% of total non-turbital bacteria section was second largest category of investigation. There were 6 instance 12 viral and 4 cases, 4 cases respectively of LRTI. All finding concurred is this. Share running at all. 2005 most similarly identified TB as a most common frequent cases. None of LRTI etiological group shows any overt age difference. There are small male pre-proportance in LRTI. And regardless of course the fever and cover most prevalent clinical symptoms. LRTI which we discussed earlier in table and bar diagram. And regardless of any infections with mycobacterial is the most typical cause of haemoptysis. 6 out of total 10 cases 60% in this result. Co-operated those of estering at all study who said that most frequent cause of haemoptysis were pulmonary TB and post tuberculosis. In our study 8 user exhibit normal chest radiographs despite having despite having been diagnosed with 4 bacterial 3 viral and 1 from the infections with HRCT. So HRCT is superior to chest x-ray. According to the finding of current H3 high revolution computed tomography is an invaluable tool for identifying the imaging features of lower accelerated tract infection and characterize the disease based on different HRCT pattern. It is also currently the best imaging modality for evaluating the small airway disease such as bronchitis and early bronchogenic speed of tuberculosis in accurately healthy lung as well as distorted lung corrective and caused by fibro-calcimic disease. It offers fine interstitial information and made more effective than other methods for detective mild pneumonia. This is my reference article. Thank you sir.