• Thứ 7, 11/07/2020
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Đặc điểm hình ảnh u nhú đảo ngược mũi xoang trên cắt lớp vi tính

Đặc điểm hình ảnh u nhú đảo ngược mũi xoang trên cắt lớp vi tính

03/17/2020 16:04:59 | 0 binh luận

Imaging characteristics of sinonasal inverted papilloma on CT Scanner

SUMMARY

Purpose: Describe characteristics imaging of sinonasal inverted papilloma( SIP) on CT Scanner.

Methods: Prospective cohort from July 2018 to July 2019, including 50 patients with histopathology inverted papilloma and CT Scanner standards.

Results: 50 patients (34 males and 16 females) with SIP in our study. Patients were a mean of 53,86 years old ( range: from 7 to 90) . SIP location: maxillary sinus (74%), frontal ethmoid sinus (66%), posterior ethmoid sinus (40%), ostiomeatal complex (80%), characteristics imaging of SIP: thin sinonasal wall( 72%), bilobed mass(70%), focal hyperostosis(82%), osteochondroma,(32%).

Conclusion: Characteristics imaging on CT Scanner: thin sinonasal wall, bilobed mass, focal hyperostosis, osteochondroma is very valuable in diagnosis SIP.

Keywords: Sinonasal inverted papilloma. CT Scanner.

Đặc điểm hình ảnh và giá trị của Mri 3.0T trong chẩn đoán hạch cổ ác tính tại Bệnh viện Ung bướu Đà Nẵng

Đặc điểm hình ảnh và giá trị của Mri 3.0T trong chẩn đoán hạch cổ ác tính tại Bệnh viện Ung bướu Đà Nẵng

12/04/2019 14:29:09 | 0 binh luận

Imaging characteristics and the value of 3 Tesla magnetic resonance imaging in malignant cervical lymphadenopathy

SUMMARY

Purposes: Describe imaging characteristics and assess value of 3 Tesla magnetic resonance imaging in differentiating benign and malignant cervical nodes.

Materials and methods: There are 96 consecutive patients with cervical nodes were undergone a 3 Tesla magnetic resonance exam from 10/2016 to 9/2017 and compared with histopathological results.

Results: The average age is 55 years old, and male/female=2/1. Loss of the hilar fat, irregular margins, heterogeneous parenchyma on fat-suppressed T2-weighted images were found in malignant and benign lymph nodes were 74.5% and 4.44%, 72.5% and 4.44%, 88.2% and 4.44%. Diagnosis malignant lymph nodes based on the diameter has got the high valuation with p<0.001. Different size criteria for benign and malignant lymph nodes found that a 11.5 mm size cutoff in the short axis diameter achieved Se 76.5%, Sp 95.6%, Acc 85.4%. In the 67 histologically proven malignant lymphadenopathies, the mean apparent diffusion coefficient (ADC) value was 0.926 ± 0.133 mm2/sec. In the 29 pathologically confirmed benign lymph nodes, an average ADC value of 1.367 ± 0.165 mm2/sec was found. For differentiating between benign versus metastatic lymph nodes, morphological criteria displayed Se 80.0%, Sp 80.0%, Acc 85.4% whereas combined use of morphological criteria on nodal architecture and ADCs yielded Se 98%, Sp 82.2%, Acc 90.6%.

Conclusion: 3 Tesla magnetic resonance imaging is a non-invasive effective technique that can provide useful information in diagnosing benign and malignant nodes in the neck.

Độ dài xương mũi thai nhi ở tuổi thai từ 19-26 tuần tại Việt Nam

Độ dài xương mũi thai nhi ở tuổi thai từ 19-26 tuần tại Việt Nam

03/30/2020 22:28:55 | 0 binh luận

SUMMARY

Aim: The purpose of this study was to establish the normal range of fetal nasal bone length (NBL) at the second

trimester of gestation in Vietnamese pregnancies.

Methods: A prospective cross-sectional study was carried out. A total of 2432 singleton pregnancies were evaluated

for fetal NBL at 19–26 weeks 6 days between 1 January 2013 and 31 December 2014. Three measurements of

NBL were taken and the largest value was chosen. Fetal anomalies and neonatal abnormalities were excluded.

Results: Mean fetal NBL was 6.75 ± 0.82 mm and mean gestational age was 22.2 ± 1.4 weeks. Median NBL increased

linearly with advancing gestational age: NBL (mm) = 0.26 × gestational age (weeks) + 1.03 (R2 = 0.20; P

<0.000). The fifth percentile of fetal NBL ranged from 4.6 to 6.3 mm, corresponding with gestational age 19–26

weeks.

Conclusion: The normal range ofNBLwas established at second trimester inVietnamese pregnancies. NBL at the

fifth percentile for gestational age was different from that of other Asian ethnicities. It is necessary to define short

NBL or hypoplasia of NBL with regard to ethnicity.

Key words: Down syndrome, fetal nasal bone length, ultrasonography.

Nghiên cứu giá trị chẩn đoán ung thư tuyến giáp của phân độ EU - tirads 2017

Nghiên cứu giá trị chẩn đoán ung thư tuyến giáp của phân độ EU - tirads 2017

12/04/2019 21:35:27 | 0 binh luận

Research into the value in the diagnosis of thyroid cancerof the EU-TIRADS 2017 classification

SUMMARY

A diagnostic test study was conducted at Bạch Mai hospital to evaluate the efficacy of Ultrasound andthe EU-TIRADS 2017classsification of thyroid nodules.

Result: 170 patients with thyroid noduleswere prospectively evaluated by B-mode ultrasound and the EU-TIRAD 2017 classsification, followed by the fine needle aspiration (FNA) biopsy. The averae age is 46,7 ± 11,5 years old and female/male = 5,5. The sensitivity, specificity, positive predictive value, negative predictive value, accuracy for the EUTIRADS 2017 were 98,2%; 34,5%; 74,3%; 90,9%; 76,7%.TIRADS 5 is the highest (64,7%). 4 features of high suspicion are irregular margins, microcalfifcations, marked hypoechogenicity, “taller – then -wide” shape; the sensitivity, specificity 70% and 93%; 35% and 91%; 50% and 79%; 58% and 82%.

Conclusion: TIRADS 5 is the highest and the EU-TIRADS 2017 classification and pathology indicates strong evidence.

Key Words: The EU-TIRADS 2017, thyroid nodules on ultrasound, thyroidcancer.

Giá trị của CHT khuếch tán trong chẩn đoán phân  biệt áp xe não và u não hoại tử hoặc u não dạng  nang

Giá trị của CHT khuếch tán trong chẩn đoán phân biệt áp xe não và u não hoại tử hoặc u não dạng nang

05/23/2020 12:23:51 | 0 binh luận

Role of diffusion weighted mr imaging in the differentiation between brain abscess and cystic/ necrotic brain tumors

SUMMARY

Objective: To evaluate the role of diffusion-weighted MR Imaging in the differentiation between brain abscess and cystic/necrotic brain tumors.

Material and method: A cross-sectional study was conducted on 53 individuals presenting with rim enhancement intra-axial mass on brain MR image at Da Nang Hospital from August 2012 to August 2013. Diffusion-weighted image were also acquired with b value were 0, 50, 1000 using 1.5T Phillp Achieva MR system.

Results: 28 patients had brain abscesses and 23 were diagnosed with brain tumors pathologically. The sensitivity and specificity of MRI in the diagnosis of brain abscess were 96.4% and 96%, respectively. PPV was 96.4% and NPV was 96%. There was a statistically significant difference in mean central ADC value between abscess and tumor, as 0.71 ± 0.24 x 10-3 mm2/s and 2.23 ± 0.44 x 10-3 mm2/s (p = 0,004) respectively. Mean peripheral ADC value showed no difference between 2 groups, as 0.78±0.26 x 10-3 mm2/s for abscess and 0.82±0.28 x 10-3 mm2/s for tumor (p = 0,132). At cut-off point of ADC ≤ 0.86 x 10-3 mm2/s, ROC curve for ADC showed 94.6% sensitivity and 100% specificity.

Conclusion: Diffusion-weighted MR image had high sensitivity and specificity in differentiation between brain abscess and cystic/necrotic tumor.

Keywords: Diffusion-weighted MR image, brain abscess, brain tumor, ADC value.

Xác định kích thước hố yên người Việt Nam bằng chụp cắt lớp điện toán

Xác định kích thước hố yên người Việt Nam bằng chụp cắt lớp điện toán

04/02/2020 20:52:36 | 0 binh luận

Normal sizes of the sella turcica of VietNamese on computed tomography

SUMMARY:

Objectives: To determine the normal sizes of the sella turcica of Vietnamese from 1 to 30 y.o. on computed tomography.

Methods: cross-sectional description of retrospective study. The length, depth, width and volume of sella turcica were measured on computed tomography of 705 patients at the No.1 Children’s Hospital and the Trưng Vương Emergency Hospital, HCM city, Vietnam , from January to June, 2011.

Results: The mean size values of the sella turcica were divided into six age groups:1 - 5, 6 - 10, 11 - 15, 16 - 20, 21 - 25, 26 - 30 with length (7.16 ± 1.43 mm, 8.11 ± 1.09 mm, 8.48 ± 1.14 mm, 9.99 ± 1.47 mm, 10.20 ± 1.16 mm, 10.39 ± 1.17 mm); depth (5.74 ± 1.16 mm, 6.74 ± 1.10 mm, 11.35 ± 1.42 mm, 12.67 ± 1.86 mm, 12.73 ± 1.5 2mm, 12.72 ± 1.41 mm); width (9.14 ± 1.67 mm, 10.44 ± 1.41 mm, 11.35 ± 1.42 mm, 12.67 ± 1.86 mm, 12.73 ± 1.52 mm, 12.72±1.41mm) and volume (196.69 ± 85.28 mm3, 286.33 ± 77.18 mm3, 336.19 ± 90.90 mm3, 491.18 ± 146.68 mm3, 500.05 ± 130.09 mm3, 523.80 ± 119.58 mm3).

Conclusions: The sizes of sella turcica increase from 1 to 20 years old; no significant increasing from 21 to 30 y.o. Differences in the sizes of sella turcica between males and females are not statistically significant. Keywords: Sella turcica

Nghiên cứu đặc điểm lâm sàng hình ảnh, siêu âm và xạ hình bệnh nhân nhiễm độc giáp

Nghiên cứu đặc điểm lâm sàng hình ảnh, siêu âm và xạ hình bệnh nhân nhiễm độc giáp

04/02/2020 15:01:37 | 0 binh luận

Study on clinical features, ultrasound imaging and scintigraphy of thyrotoxicosis patients

SUMMARY:

The cross section study on 36 patients at the Endocrinology - Neurology - Respiratory Department of Hue Central Hospital, from May 2010 to September 2011. The main clinical symtoms: palpitation, heart rate >90bpm, finger and hands tremors, weight loss, thyroid gland enlargement, systolic murmur at thyroid gland. Thyroid Scintigraphy: The major signs are irregular margins, thyroid gland enlargement, and high iodine-131thyroid imaging. Thyroid Ultrasonography: Most patients have enlargement thyroid volume, hypoechogenicity, irregular margins and hypervascularity. An increased mean peak systolic velocity of the thyroid artery is significantly charateristic.There was tied correlation between thyroid weight on Scintigraphy and thyroid volume on Ultrasonography, between peak diastolic velocity and T3 level, between peak systolic velocity and TSH level (p<0,05).

Nghiên cứu đặc điểm hình ảnh và giá trị chẩn đoán của cộng hưởng từ đối với u nguyên bào thần kinh đệm hai bán cầu

Nghiên cứu đặc điểm hình ảnh và giá trị chẩn đoán của cộng hưởng từ đối với u nguyên bào thần kinh đệm hai bán cầu

04/02/2020 14:10:20 | 0 binh luận

Study of imaging characteristic and value of MRI in diagnosis of hemisphere glioblastoma

SUMMARY:

Purpose: Describing imaging characteristic and assessing the MRI value in the diagnosis of hemisphere glioblastoma.

Materials and methods: 2505 patients of brain tumors were selected in retrospective describe study, diagnosed, operated and having histopathological result from January 2009 to March 2011 in Viet Duc Hospital, in which 45 patients were histologically confirmed of glioblastoma. Based on gold standard of histopathology, the value of MRI in diagnosis of hemisphere glioblastoma was assessed.

Results: Mean age 51±16. Gender: M/F 1.3/1. Location at frontal lobe (26.4%), fronto -temporal lobe (20%), less frequently at occipital lobe. Average diameter more than 5cm (60.4%). Hyposignal on T1W (66%), hypersignal on T2W (70%), marked and heterogenous enhancement (43.4%), rim enhancement (47.3), necrosis (95.6%), cyst component (52.8%), hemorrhage (28.4%); surrounding edema of grade II and III (90%), meningeal and copus callosum invasion (47.2% and 39.6%, respectively). Accurate diagnosis of tumor location was 100% comparing to surgery. Se, Sp and Acc respectively 81.1%, 97.6%, and 98%.

Conclusion: MRI had high value in diagnosis of hemisphere glioblastoma.

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