Application of Ultrasonography and Computed Tomography in Diagnosis for Cholelithiasis
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Objective:The study aimed at evaluating the differences of ultrasonography and Computed Tomography in diagnosis for cholelithiasis.Methods: 250 cases with cholelithiasis were examined after conventional ultrasound and Computed Tomography,we compare the differences of two methods.Results: Computed Tomography is better than Ultrasonography in diagnose hepatic cholelithiasis,but there is no remarkable difference of two diagnostic method for cholecystic stones.Conclusion: Computed Tomography is better for diagnosing extrahepatic stones and we can make use of the two methods for cholelithiasis.Cite
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Assessment of Ultrasonography and Computed Tomography in the Diagnostic Strategy of Suspected AppendicitisRobert D. StoffeyAudio Available | Share
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Objective To evaluate MRI and CT in the diagnosis of cholelithiasis.Materials and Methods CT and MRI findings in 28 patients with pathologically proved cholelithiasis, including cholecystolithiasis (n=11), cholangiocholithiasis (n=8) and cholecystolithiasis with cholangiocholithiasis (n=9), were retrospectively analyzed, and the CT signs were compared with the pathological results. Routine spiral CT scanning with single breath hold was performed in all patients. For MRI, FLASH, HASTE, TRUEFISP sequences and MRCP technique were adopted. Results Of 28 cases, CT identified the diagnosis of cholelithiasis in 16 (accuracy 57.1%), while MRI identified cholelithiasis in 27 (accuracy 96.4%).Conclusion CT and MRI are very helpful for the diagnosis of cholelithiasis. MRI is superior to CT in diagnosing cholelithiasis as MRI can use multiple imaging parameters, be able to show the lesion from multiple planes and make MRCP.
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28Jun 2017 COMPARATIVE EVALUATION OF ULTRASONOGRAPHY AND COMPUTED TOMOGRAPHY FINDINGS IN RENAL MASSES. Jaswinder Kaur Mohi , Sunita and Manoj Mittal. Radiology gmc Patiala.
Renal mass
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BACKGROUNDThe term renal mass includes a large number of expansile entities, which are aggregates of non-functional renal parenchyma.Renal masses can be neoplastic, non-neoplastic or normal variants [pseudotumours].The aim of this study is to study and evaluate the nature of renal masses by ultrasound and computed tomography. MATERIALS AND METHODSThis retrospective descriptive study was carried out in the Department of Radiology, Patna Medical College and Hospital, duri ng October 2015 -October 2016 in one year duration.Fifty patients irrespective of age and sex, suspicious of malignant renal masses were included in this study.Ultrasound was done by Toshiba Nemio XG USG machine with different types of probes-curvilinear with 3.5 -5 MHz and linear probe with 7 -10 MHz frequency and also by Colour Doppler study whenever needed.Toshiba 128slice Computed Tomography Scan was used for scanning of all patients, plain and contrast both studies were performed and collected data was analysed. RESULTSFifty cases of renal masses comprising of polycystic kidney disease, [1] parapelvic cyst, [2] renal cell carcinoma, [3] Wilms' tumour [4] and squamous cell carcinoma [5] were clinically studied and evaluated radiologically by ultrasonography and CT.Ultrasound remains the modality of choice for initial screening in cases of adult polycystic kidney disease. CONCLUSIONIt can be concluded from our study that ultrasound and contrast CT scan is an investigation of choice for pre-operative staging of malignant renal masses due to its ability in demonstrating perinephric extension, invasion of renal fascia, evaluation of retroperitoneum and detection of distant metastases.
Renal mass
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Introduction: Ultrasound, Color Doppler and computerized Tomography can reliably diagnose benign and malignant mass lesions affecting kidneys.The common benign renal lesions include simple renal cyst, angiomyolipoma, oncocytoma, cystic nephroma and inflammatory lesions like renal abscess.The common malignant renal lesions include renal cell carcinoma in adults and wilms tumor in pediatric age group.Though the imaging can be useful in diagnosis final diagnosis is dependent upon histopathology particularly in malignant lesions such as renal cell carcinoma and Wilms tumor.We conducted this study to compare Ultrasonography-Doppler and Computed Tomography as imaging modality in the diagnosis of renal masses and to correlate the Ultrasonography-Doppler and Computed Tomography findings of renal masses with Histopathology wherever possible.Materials and Methods: This was a prospective cohort study conducted in the department of radiology of a tertiary care medical college situated in an urban area.One hundred and two ( 102) patients of all age groups and both sexes and diagnosed to be having renal mass on the basis of imaging in either ultrasound or CT were included in this study on the basis of a predefined inclusion and exclusion criteria.Ultrasound and Doppler examination and CT scan was done in all the cases.USG-Doppler and CT scan findings were compared with histopathology diagnosis.The sensitivity, specificity, positive predictive value and negative predictive value of the various modalities were determined.Results: Out of 102 cases included in this study there were 63 (61.76%) males and 39 (38.24%) females with a M:F ratio of 1:0.61 and most of the patients belonged to the age group of 40-49 years (27.45%).The most common lesion found in the patients was renal cyst (40.20%) followed by renal cell carcinoma (27.45%) and abscess (9.80%).RCC was the most common malignant renal mass (28 out of 40 i.e. 70%).The accuracy of USG doppler for diagnosis of RCC and AML was 98.07%.The accuracy of CT scan for diagnosis of abscess, AML, simple cyst, cystic nephroma, renal lymphoma, RCC, TCC and Wilms tumor was 100%.There were two false negative cases of SCC on CT scan.The analysis of CT characteristics for pre-operative evaluation of RCC showed that Computerized tomography was having sensitivity of 75% for determination of adjacent organ involvement.For all other parameters CT was found to be 100% sensitive. Conclusion:For the diagnosis of renal masses both USG-Doppler and CT scan were found to be equally accurate except in cases of angiomyolipoma, renal cell carcinoma and squamous cell carcinoma where CT was found to be more accurate for diagnosis.On the basis of imaging features of various renal masses on USG-Doppler and CT scan, it is possible to differentiate and diagnose most of the renal masses thus aiding in their management.
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BACKGROUNDStomach cancer is the second most common cancer among men and third most among women in Asia and worldwide.Almost all gastric cancers are adenocarcinomas (95%).Other histological types include lymphomas and carcinoid tumours.The data obtained from the National Cancer Registries indicates that gastric cancer is a leading problem in North-Eastern and Southern states of Indian subcontinent.The objective of our study was to evaluate the USG and CT imaging features of cases of stomach carcinoma referred to the Radiology Department, GMCH. MATERIALS AND METHODSThis descriptive study of Ultrasonography and Computed Tomography were done in all patients of the study group.Histopathological study was done either by ultrasound-guided fine needle aspiration cytology, upper GI endoscopic biopsy or from post-operative specimen.Only histologically proven stomach carcinoma cases were included in our study.The age group of the patients ranged from 30 years to 90 years. RESULTS50 cases of stomach carcinoma were studied and among 50 cases 33 were male and 17 were female.Parameters like pattern of tumour growth, adjacent organ involvement, nodal spread and histological type of tumour were evaluated and tabulated. CONCLUSIONVarious findings like male predominance with male-to-female ratio of 1.9: 1, 5 th -7 th decade as the age group with maximum number of cases etc. can be obtained from the present study.Computed Tomography is more accurate than ultrasonography in detecting extent of tumour, patterns of tumour growth, adjacent organ involvement, lymph node spread and metastasis.
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