• Thứ 2, 26/07/2021
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Mô tả bất thường giải phẫu nửa sau vòng động mạch não trên chụp cắt lớp vi tính

Mô tả bất thường giải phẫu nửa sau vòng động mạch não trên chụp cắt lớp vi tính

06/05/2021 16:04:23 | 0 binh luận

SUMMARY Objective: To describe the anatomical variations in posterior half of the circle of Willis and to determine the rate of the anatomical variability of these arteries. Materials and Methods: We conducted a cross-sectional study in 480 people who were performed CT angiography of the cerebral arteries at the University Medical Center Hospital between January 2019 and December 2020. The blood vessels to be investigated included: posterior communicating arteries, posterior cerebral arteries, basal artery, anterior inferior cerebellar arteries, posterior inferior cerebellar arteries, and the superior cerebellar artery. A radiologist who had more than 5 years of experience of CT brain evaluates these anatomical variations: hypoplasia, aplasia, fetal type, fenestration, duplication, triplication and double origin. Results: The study was composed of 480 people (259 males, 221 females). The mean age of people was 55.7 ± 16.7 years (range, 2 - 102 years). 50 - 69 age group accounts for the majority with 237 people (49.4%). The anatomical variations of posterior communicating artery: unilateral hypoplasia 38.5%, bilateral hypoplasia 19.4%, unilateral aplasia 22.9%, bilateral aplasia 4.0%, fenestration 0.4%. The anatomical variations of posterior cerebral artery: unilateral hypoplasia 10.2%, bilateral hypoplasia 3.5%, unilateral aplasia 8.8%, bilateral aplasia 1.3%, unilateral fetal 17.9%, bilateral fetal 5%. The anatomical variations of basal artery: hypoplasia 5.6%, aplasia 0%, fenestration 0.6%. The anatomical variations of anterior inferior cerebellar artery: unilateral aplasia 30%, bilateral aplasia 10.4%, unilateral duplication 1.3%, bilateral duplication 5.8%, triplication 0.2%. The anatomical variations of posterior inferior cerebellar artery: unilateral aplasia 29%, bilateral aplasia 5.8%, unilateral duplication 0.4%, bilateral duplication 0%, fenestration 0.2%, double origin 0.2%. The anatomical variations of the superior cerebellar artery: aplasia 0%, unilateral duplication 11.3%, bilateral duplication 2.9%, triplication 1.7%, double origin 0.4%. Conclusion : The anatomical variations in posterior half of the circle of Willis are common. The most common abnormalities are the fetal type of posterior cerebral artery, hypoplasia or aplasia of the posterior communicating artery, hypoplasia or aplasia anterior and posterior inferior cerebellar artery, and the duplication of the superior cerebellar artery. Keywords: posterior circulatory system, computed tomography, anatomical variations.
Đặc điểm hình ảnh ung thư thực quản trên cắt lớp vi tính 256 dãy

Đặc điểm hình ảnh ung thư thực quản trên cắt lớp vi tính 256 dãy

06/05/2021 17:30:13 | 0 binh luận

SUMMARY Purpose : Describer the imaging characteristics of esophageal cancer on MDCT 256-detector row. Material and method : From June 2019 to June 2020, 32 patients with esophageal cancer were treated at Huu nghi Hospital. The quantitative parameters were expressed as mean and standard deviation while the qualitative parameters were expressed as percentage. SPSS 26.0 was applied. Results: 3.1.% cases were not found on MDCT. The tumors were found most commonly in the middle and low one third. The tumor size were 44.8±33.01 mm of length and 12.2±4.77 mm of thickness. All of them were T3 stages. 48.4% patients have lymph nodes. Majority of lymph nodes were in mediastinum or supraclavicular areas. 9.6% patients were metastasized. Conclusion: MDCT 256-detector row is helpful for characterising esophageal cancer. Key words: esophageal cancer, computed tomography, staging.
Nghiên cứu giá trị của chụp cắt lớp vi tính 128 định lượng trên bệnh nhân bệnh phổi tắc nghẽn mạn tính trước và sau ghép tế bào gốc tự thân

Nghiên cứu giá trị của chụp cắt lớp vi tính 128 định lượng trên bệnh nhân bệnh phổi tắc nghẽn mạn tính trước và sau ghép tế bào gốc tự thân

06/05/2021 15:35:43 | 0 binh luận

SUMMARY Background: Quantitative Computed Tomography (QCT) has been used for many years worldwide to evaluate and quantify lung parenchymal lesions in chronic obstructive pulmonary disease (COPD), including emphysema quantification (LAA-950), air-trapping assessment area (LAA- 856), bronchial wall area (WA), percentage of wall area (% WA), bronchial lumen area (LA), bronchial wall thickness (WT), studies show that QCT is highly accurate, strongly correlated with the respiratory function test (FEV1, FVC), grade classification according to GOLD. We applied this method to evaluate the indicators of emphysema (LAA-950), air-trapping (LAA-856), RVC¬856-950, bronchial wall area (WA), bronchial lumen (LA) and bronchial wall thickness (WT), percentage pulmonary vascular (%HAV) of COPD patients before and after autologous stem cell transplant from adipose tissue and bone marrow. Method: The study was conducted from 10.2019 - 10.2020 on 32 COPD patients diagnosed with COPD according to GOLD 2018 standards, patients with FEV1 <60% were selected for the autologous stem cell transplant study at The Respiratory Center - Bach Mai Hospital (4 GOLD II patients, 17 GOLD III patients, 11 GOLD IV patients). The patient was given quantitative CT scans 2 times, the first time before transplant and the second after 6 months after transplantation with a 128-detectors scanner of Siemens (Somatom Definition Egde) at Dien Quang Center - Bach Mai Hospital. Results: Percentage of emphysema (LAA-950) before grafting 31.49% ± 8.19, after grafting 32.8% ± 7.13), percentage of air-trapping in then exhalation (LAA-856) before grafting 63.65% ± 8.74, after transplant 61.41% ± 7.4 (statistically significant difference p = 0.026), RVC856- 950 before transplant 0.83 ± 1.82, post transplant 3.58 ± 1.76 (significant difference p = 0.000), these indicators are linearly correlated with FEV1, BODE and GOLD classification. The percentage of wall area (%WA) after transplantation was changed in the bronchial branch of segment 1 (70.74% before transplantation, 67.59% after transplantation, p = 0.02) and in branch of subsegment 1 (79.19% before transplantation, after transplantation 75.90%, p = 0.01), lumen area (LA), inner diameter (ID) of the posttransplant bronchial all increased in the segmental and subsegmental bronchial branches RB1, RB4, RB10, wall thickness (WT) decreased in the sub-branches RB1-1, RB4-1, RB10-1 (however the difference was not statistically significant with p <0.05). Conclusion: Emphysema (LAA-950), air-trapping (LAA-856, RVC856-950), percentage of bronchial wall (% WA), lumen area (LA), inner diameter (ID), thickness bronchial wall (WT) measured on QCT correlated with FEV1, FVC, GOLD, BODE before and after stem cell transplantation, can be used to assess the extent and stage of Chronic Obstructive Pulmonary Disease, pre- and post-assessment of autologous stem cell transplant therapy. Keywords: Quantitative CT COPD, Quantitative CT after autologous stem cell tranplantation
Vai trò của chụp cắt lớp vi tính 128 dãy trong đánh giá giải phẫu động - tĩnh mạch đoạn ngoài thận ở người cho sống

Vai trò của chụp cắt lớp vi tính 128 dãy trong đánh giá giải phẫu động - tĩnh mạch đoạn ngoài thận ở người cho sống

06/05/2021 16:27:48 | 0 binh luận

SUMMARY Objective: The purpose of this study was to determinate the accuracy of multidetector computed tomography (MDCT) angiography for imaging evaluation of renal arterial and venous structures of living donor kidney Materials and Methods: Two hundred twenty-eight potential living donor candidates were included to this study, who had CTA for the assessment of their renal vessels in our hospital between January 2018 and June 2020 and one hundred-eighty donors who underwent open surgical in this time. The number, course, and drainage patterns of the renal vessel were retrospectively observed from the scans. Anomalies of renal arteries, veins and inferior vena cava (IVC) were recorded. Multiplanar reformations (MPRs), maximum intensity projections, and volume rendering were used for analysis. The results obtained were correlated surgically. Results: A total of 228 potential live kidney donors underwent renal CTA (112 of the patients were male, and 116 were female. Mean age of donors was 38,32 ± 12,34 years. among them 180 patients had donor nephrectomy. There were 151 kidneys had single renal artery , here were 29 kidneys had at least one accessory or polar artery. There were 45 early branching renal arteries, two kidneys were retroaortic left renal veins. 16 kidneys had multiple renal veins. 55 kidneys wewe late venous confluence of renal veins. Sn, Sp, NPV, PPV compare open oparative nephrectomy 87,5%- 100%. Conclusion: Renal CTA is an accurate, safe and noninvasive diagnostic tool for determination of renal artery and vein abnormalities in living kidney donors preooparative. It helps with surgery planning, choosing operation side and exclusion of donors. Keyword: CTA, MSCT, living donor
Đặc điểm hình ảnh và giá trị của cộng hưởng từ 1.5T trong phân loại giai đoạn ung thư cổ tử cung

Đặc điểm hình ảnh và giá trị của cộng hưởng từ 1.5T trong phân loại giai đoạn ung thư cổ tử cung

06/05/2021 16:59:10 | 0 binh luận

SUMMARY A prospective descriptive study of 47 cervical cancer patients, were taken 1.5T MRI before surgery, and has result pathology after surgery in the Ha Noi Oncology hospital. Results: The min and max ages are 32 and 69, the average age is 52,1 ± 10,0. Squamous-cell carcinoma 89,4%, Adenocarcinoma 10,6%. 100% mass shows a slightly hyperintense in T2-weighted MR image, 94,2% shows a isointense in T1W, 97,1% shows a hyperintense in Diffusion (b800), 97,1% T1FS-weighted MR image shows poorly absorbed drugs for muscle fiber uterus after injection, 61,8% heterogeneous infiltration strong enhancement of the tumor. Assess tumor size has Acc 85,3%. The rating invasive vaginal has Se 100%, Sp 100%, Acc 100%, PPV và NPV 100%. Invasive parametre has Se 95,2%, Sp 96,2%, Acc 95,7%, PPV 95,2% và NPV 96,2%. Diagnosed lymph node metastases with Se 100%, Sp 97,8%, Acc 97,9%, PPV 66,7% và NPV 100%. Staging of the MRI 1.5T has Acc 95,7% Conclusion: Image 1.5T MRI on observable clarity T2WI, DWI before the injection and T1FS after the injection contract. 1.5T MRI has high value for staging Cervical cancer. MRI should be used routinely for staging Cervical cancer. Keyword: Cervical cancer, MRI of cervical, staging cervical cancer.
Đánh giá kết quả điều trị rò động tĩnh mạch màng cứng nội sọ ngoài vùng xoang hang bằng can thiệp nội mạch có sử dụng bóng chẹn bảo vệ

Đánh giá kết quả điều trị rò động tĩnh mạch màng cứng nội sọ ngoài vùng xoang hang bằng can thiệp nội mạch có sử dụng bóng chẹn bảo vệ

06/05/2021 16:21:45 | 0 binh luận

SUMMARY Purpose: To evaluate the apply the transvenous balloon protection in endovascular intervention of non - cavernous sinus dural arteriovenous fistula. Material and methods: The uncontrolled interventional study was conducted in Radiology center at Bach Mai hospital from January 2017 to August 2020. 15 patients with non - cavernous sinus dural arteriovenous fistula underwent endovascular treatment using transvenous balloon protection. Results: 15 patients were treated in 18 procedures. Among these, there were 7 males and 8 females, mean age was 48.2 ± 14.82 years. Most non - cavernous sinus dural arteriovenous fistulas were located at the transverse - sigmoid sinus (76,5%). According to the Cognard classification, Cognard IIa accounted for 47%, Cognard IIb accounted for 17,6%, Cognard IIa+b accounted for 29,4%, and Cognard IV accounted for 5,9%. Most fistulas presented with multiple feeding arteries, the most common artery was middle meningeal artery. With 18 procedures underwent tranvenous balloon protection, the sinus protection was achieved in 17 out of 18 patients. 86,7% of these patients had complete occlusion of fistula, whereas partial occlusion occurred in 13,3% of these patients. After treatment, 86,7% of these cases didn’t have complication, complete symptom remission rate was 53,3%, 26,7% showed symptom relief. Only 1 case had severe complication, accounted for 5,6%. Conclusion : Endovascular intervention using transvenous balloon protection is a safe and effective technique in the treament of non - cavernous sinus dural arteriovenous fistula. Key words: dAVF, endovascular intervention, transvenous balloon protection.
Nghiên cứu giá trị của cộng hưởng từ với thuốc đối quang từ primovist trong chẩn đoán ung thư biểu mô tế bào gan

Nghiên cứu giá trị của cộng hưởng từ với thuốc đối quang từ primovist trong chẩn đoán ung thư biểu mô tế bào gan

06/05/2021 14:48:38 | 0 binh luận

SUMMARY Aim: Evaluate the value of MRI with Gd-EOB-DTPA (Primovist) in the detection of HCC comparison with the pathological results Methods : Descriptive cross-sectional research, performed on 28 patients consist of 2 groups: Group I includes 18 patients with HCC and group II includes 10 non-HCC patients (7 patients with focal nodular hyperplasia. 3 patients with liver metastasis). The patients whose liver lesion were detected on diagnostic imaging modalities undergone MRI with hepatiobillial specific contrast agent Gd-EOB-DTPA (Primovist). Thereafter, definite diagnosis was based on histopathological results of biopsy or surgery. Results: Hepatobiillial phase hypointense was the most sensitive diagnostic criteria of HCC(94.4%), however, specificity is only 70%. For liver cancer diagnosing, arterial enhancement followed by washout on portal venous or late phase had the sensitivity, negative predictive value and diagnostic accuracy were 61.1%, 58.8% and 75%, respectively. When combining with hepatobillial phase hypointense, these values increased to 72.2%, 67.7%, and 82.1%, respectively; while, the specificity and positive predictive values were unchanged. Conclusion: Hepatobiillial phase hypointense is a good diagnostic criteria on detection of HCC than differential diagnosis with other hepatic lesions. The addition of hepatobiillial phase on MRI with Gd-EOB-DTPA (Primovist) increases the likelihood of detecting HCC lesions.

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