• Thứ 2, 15/08/2022
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Nghiên cứu giá trị của siêu âm doppler trong tiên lượng tình trạng sức khỏe của thai ở thai phụ tiền sản giật

Nghiên cứu giá trị của siêu âm doppler trong tiên lượng tình trạng sức khỏe của thai ở thai phụ tiền sản giật

30/03/2020 22:11:27 | 0 binh luận

Value of doppler ultrasonography in predicting fetal well-being in pregnant women with preecclampsia SUMMARY Background: .Study on the value of some ultrasound explorations in predicting fetal well-beingin pregnant women with preeclampsia and to compare the effectiveness of different Doppler indices in predicting fetal well-being in pregnant women with preeclampsia. Methods : Study on153 patients with pre-eclampsia at Obs. & Gyn. Department - Hue Central Hospital were taken by an prospective cohort study from 12/2012 to 2/2016,. Results: Cut-off value of UTA RI for IUGR and fetal distress prediction at gestational age of 34-37 weeks was 0.6. The UTA S/D ratio cut-off value of 2.6 for fetal distress prediction at gestational age of 34-37 weeks had the sensitivity of 100% and specificity of 60%. Fetal distress prediction using UMA RI at gestational age of 34-37 weeks with cut-off value of 0.64 had the sensitivity of 90.9%, at gestational age above 37 weeks with cut-off value of 9.75 had the sensitivity of 100%. Cut-off values for UMA RI for IUGR prediction at gestational age of 34-37 weeks was 0.74 and at gestational age above 37 weeks was 0.76. Conclusion :The study found the cut-off values of PI, RI, S/D ratios of the UTA, UMA andMCA to predict fetal distress, IUGR in preeclampsia to help clinicians determine the most appropriate management to reduce perinatal morbidity and mortality rates.The study also compared the effectiveness of different Doppler indices in predicting fetal well-being. Key words : Doppler ultrosound,uterine Doppler, fetal distress, preeclampsia, IUGR
Nghiên cứu giá trị siêu âm đàn hồi bán định lượng (SEMI-QUANTITATIVE) trong chẩn đoán u vú

Nghiên cứu giá trị siêu âm đàn hồi bán định lượng (SEMI-QUANTITATIVE) trong chẩn đoán u vú

30/03/2020 22:04:54 | 0 binh luận

Research Value of Strain Elastography (Semi-quantitative) in Breast Tumor Diagnosis. SUMMARY Objective : Combined B-mode ultrasound and Strain Elastography Imaging (Semi-quantitative) which calculates the cutoff value of Strain Elastography in diagnosis of benign /malignant breast tumor. Method : Patients with breast tumors were combined B-mode breast ultrasound, using the WS80A equipment (Samsung), and Strain Elastography (Semi-quantitative), followed by Tsukuba-score and Ratio (B/A) (A= tumor lesion, B = fatty tissue above the lesion). From that, evaluated the accuracy, specificity, positive predictive value, accuracy and cut-off values of the Strain Elastography for diagnosis of benign/malignant breast tumors. Results : 93 women with breast tumors (67 benign tumors, 26 breast cancers), diagnosed by cytology and histopathology. The average rate of semi-quantitative in malignant and benign tumors compared to fat tissue respectively was (4.73 +/- 2.45) and (1.85 +/- 0.92). The area under the ROC curve is 0.92. The cut-off value was (2.43) has the highest sensitivity (88.5%) and the specificity (82.1%) in the diagnosis of malignant tumors. Positive predictive value (92.8%), accuracy (82.3%). Conclusion : Using Strain Elastography to measure the elasticity ratio of the breast tumor compared to fat tissue, with a cutoff values (2.43), with high sensitivity and specificity in diagnosis of benign /malignant breast tumor, which complements the breast Birads categories classification. Key words: Strain Elastography (SE), Semi-quantitative, benign /malignant breast tumor, Tsukuba-score , Ratio (B/A).
Đặc điểm hình ảnh siêu âm doppler và giá trị bổ sung của chụp mạch số hóa xóa nền trong chẩn đoán hẹp, tắc động mạch chi dưới

Đặc điểm hình ảnh siêu âm doppler và giá trị bổ sung của chụp mạch số hóa xóa nền trong chẩn đoán hẹp, tắc động mạch chi dưới

30/03/2020 21:49:42 | 0 binh luận

Imaging characteristics of doppler ultrasound and complementary value of digital subtraction angiography in the diagnosis of peripheral arterial occlusive disease of lower extremity SUMMARY Objectives: Describe imaging characteristics of doppler ultrasound (DUS) and evaluate the complementary value of digital subtraction angiography (DSA) in the diagnosis of peripheral arterial occlusive disease (PAOD) of lower extremity. Materials and Methods: The study is a cross sectional one and was carried out at the hospital of Hue university of medicine and pharmacy. 40 patients diagnosed with PAOD of lower limbs went through arterial assessment with DUS and DSA. The image findings of both technique were used to evaluate the diagnosis accuracy of DUS and the complementary value of DSA. Results: The sensitivity, specificity, positive predictive value and negative predictive value of DUS in PAOD is 80,65%, 92,83%, 86,21% and 89,61% respectively. DSA complemented for DUS with 6,36% additional cases of >50% stenosis or complete occlusion and 5,49% cases of low flow in occlusion suspected arteries. DSA revealed an additional of 81% collaterals in occluded arteries compared to DUS. Conclusion: DUS has high diagnostic value in PAOD of lower extremities. DSA has high complementary value for DUS in the diagnosis of PAOD of lower extremities, with the highest value at below-knee arteries. Keywords: peripheral arterial occlusive disease, doppler ultrasound, digital subtraction angiography.
Nghiên cứu đặc điểm siêu âm tim ở bệnh nhân lọc máu chu kỳ tại bệnh viện 175

Nghiên cứu đặc điểm siêu âm tim ở bệnh nhân lọc máu chu kỳ tại bệnh viện 175

01/04/2020 16:26:53 | 0 binh luận

The evaluation of cardiac morphology and function on echocardiography of patients post dialysis at 175 Hospital SUMMARY Studies in 101 patients with these degree of kidney failure and dialysis several times, we can see the changes occurring in heart can see when echocardiography: The morphologic changes of heart, showing the dilate slight of left ventricle, left atrium and left ventricle wall thickening, increased heart muscle mass. There are signs of diastolic dysfunction on doppler ultrasound, that saw earlier by tissue doppler imaging (Em, Em / Am ...) but not affecting systolic function. There are changes in cardiac morphology and function between the dialysis groups over time towards improving. Keywords: Renal failure, dialysis, echocardiography.
Đặc điểm hình ảnh siêu âm các tổn thương ung thư tuyến giáp

Đặc điểm hình ảnh siêu âm các tổn thương ung thư tuyến giáp

01/04/2020 16:06:30 | 0 binh luận

Ultrasound features of thyroid cancer SUMMARY urpose: To find features of thyroid malignancy nodule on the ultrasound. Material and Methods: A total 307 thyroid nodules of 272 patients (146 malignant nodules on the 146 patients, 161 benign nodules on the 126 patients), who underwent thyroid ultrasound examintation. There ultrasound features are compared with pathologic result for evaluation value. Result: The following US features showed a significant association with malignancy: solid component, hypoechogenicity (Sensitivity 80.82%; Specificity 59.01%), marked hypoechogenicity (Sensitivity 16.44%, Specificity 98.76%), irregular margins (Sensitivity 77.4%, Specificity 92.55%), microcalcifi cations (Sensitivity 69.18%, Specificity 97.52%), and taller-than-wide shape (Sensitivity 69,86%, Specificity 94.41%). Conclusion: High-resolution thyroid US is the most useful diagnostic tool for evaluating thyroid nodules. Ultrasound features of thyroid nodules malignancy include a hypoechonic, mark hypoechonic, taller than wide, irregular margins and microcalcification. Keyword: Thyroid ultrasound, thyroid, ultrasound.
Đặc điểm hình ảnh siêu âm Triplex trong chẩn đoán xoắn tinh hoàn tại bệnh viện Việt Đức

Đặc điểm hình ảnh siêu âm Triplex trong chẩn đoán xoắn tinh hoàn tại bệnh viện Việt Đức

01/04/2020 13:52:07 | 0 binh luận

Describe the characteristics of the Triplex ultrasound images of testicular torsion at Viet Duc hospital SUMMARY Purpsose: Describe the Triplex ultrasound imaging characteristics of testicular torsion Object and methods: Patients who have acute scrotum going to Viet Duc Hospital Emergency Sonography Department between March 2014 and September 2005, were diagnosed testicular torsion and operated. Results : 32 cases were diagnosed as testicular torsion, diagnosis after surgery is correct 100% of the cases. The mean age 19,2 ± 5,1. Sign “whirlpool” is found in 75% of cases, the common position is above the testicles 91.7%. Sign of losing the pulse signal at testicular torsion 31/32 (96.9%). Increased testicular size 27/32 (84.4%). 28/32 heterogeneous parenchyma, normal 3/32, 1/32 hypoechoic. Epididymis morphology change 25/32 cases (78.1%), of which the most common are sphere 76%. Conclusions: Triplex Ultrasonography has value in the different diagnosis of testicular torsion with other diseases causing scrotal pain. Keywords : Triplex sonography, testicular torsion.
Nghiên cứu ứng dụng phân loại TIRADS trong chẩn đoán tổn thương dạng nốt tuyến giáp trên siêu âm

Nghiên cứu ứng dụng phân loại TIRADS trong chẩn đoán tổn thương dạng nốt tuyến giáp trên siêu âm

01/04/2020 11:48:16 | 0 binh luận

Application of thyroid imaging reporting and data system (TIRADS) in evaluation of thyroid nodules on ultrasound imaging SUMMARY Objectives : To describe sonographic findings of thyroid focal lesions and to evaluate the role of Thyroid Imaging Reporting and Data System (TIRADS) in predicting the malignancy of thyroid focal lesions. Material and methods: Prospective study on 180 patients. Thyroid focal lesions were scored by using TIRADS. The sonographic findings were compared with pathological results. Results: Solid was the most sensitive sonographic indicator of malignancy (93.8%), while the most specific indicator was the taller-than-wide sign (98.2%). The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of TIRADS in predicting the malignancy of thyroid focal lesions were 87.5%, 92.1%, 51.9%, 98.7% and 91.7%, respectively. Conclusion: TIRADS is a simple score which is easy to apply in clinical practice with high diagnostic accuracy. Keywords: Thyroid nodules, ultrasound
Tổng quan công nghệ và ưu thế vượt trội của kỉ thuật siêu âm đàn hồi ARFI

Tổng quan công nghệ và ưu thế vượt trội của kỉ thuật siêu âm đàn hồi ARFI

01/04/2020 10:09:04 | 0 binh luận

Acoustic Radiation Force Impulse Imaging

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