• Chủ nhật, 05/07/2020
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U thận trong bệnh cảnh phakomatosis, những điều cần lưu ý: nhân hai trường hợp lâm sàng

U thận trong bệnh cảnh phakomatosis, những điều cần lưu ý: nhân hai trường hợp lâm sàng

12/05/2019 10:06:36 | 0 binh luận

Renal tumors in the Phakomatosis disease, what to note: two case report

SUMMARY

Phakomatosis are a group of neurocutaneous disorders characterised by involvement of structures that arise from the embryonic ectoderm , consist of central nervous system, skin ,eyes and others: kidney, heart, lung… In this article we focus on the incidence of renal tumors in Tuberous sclerosis, one of the common diseases in Phakomatosis. Tuberous sclerosis is a rare neurocutaneous disorder (phakomatosis) characterized by the development of multiple benign tumours in various organs, including the kidneys. Tuberous sclerosis complex has several renal manifestations including angiomyolipomas (AML) and renal epithelial neoplasms. Angiomyolipomas is found in 40% of patients with tuberous sclerosis, and its most common complication is ruptures due to aneurysms. We present two cases was diagnosed with bilateral angiomyolipomas in tuberculosis and emphasizes the importance of the diagnosis and choice of appropriate treatment for each patient.

Key words: Phakomatosis, renal tumor

Chụp CT hai mức năng lượng: nguyên lý và ứng dụng lâm sàng

Chụp CT hai mức năng lượng: nguyên lý và ứng dụng lâm sàng

12/05/2019 09:51:32 | 0 binh luận

Dual energy computed tomography: basic principles and applications

SUMMARY

Computed tomography is a modern medical imaging with rapid development and many technical advances. Dual energy CT (DECT) is adevelopment that offers great promise to increase the CT potential. Conventional CT utilizes a single X ray beam and contrast image is generated by the differences in photon attenuation of materials. In DECT, two energy levels are used to acquire images.The tube potentials are mostly set to 140 and 80 kVp to obtain the largest spectral difference. DECT differsmaterial composition by different photon energy levels. DECT is widely indicated and some indications are routineclinical use. Clinical applications include, for example, the assessment of contrast enhancement in focal organ lesions, pulmonary perfusion, angiography with bone removal and display of plaque distribution, kidney stone differentiation, and detection of tophi... This article introduces some basic principles and clinical applications of DECT.

Keywords: Dual energy CT, spectral, contrast image, attenuation, materials

Ứng dụng lâm sàng kỹ thuật cộng hưởng từ tương phản pha (PC-MRI) trong đánh giá động học dòng chảy dịch não tủy

Ứng dụng lâm sàng kỹ thuật cộng hưởng từ tương phản pha (PC-MRI) trong đánh giá động học dòng chảy dịch não tủy

12/05/2019 09:46:10 | 0 binh luận

Clinical application of phase contrast mri technique in the evaluation csf flow dynamics

SUMMARY

Phase-contrast MRI (PC-MRI) recently used as a reliable method for evaluating both qualitative and quantitative CSF flow. Phase-contrast MRI has often been used for the evaluation of normal pressure hydrocephalus, communicating and non-communicating hydrocephalus, arachnoid cyst, Chiari I malformations and syringomyelia, response to endoscopic third ventriculostomy and ventriculoperitoneal shunt (VP-shunt). This review introduces: the PC MRI technique, CSF physiology and cerebrospinal space anatomy, to describe a group of congenital and acquired disorders that can alter the CSF dynamics.

Keywords: Phase contrast MRI, CSF flow, hydrocephalus, Chiari I malformation, syringomyelia

Tiến bộ kỹ thuật cộng hưởng từ trong đánh giá u tế bào đệm

Tiến bộ kỹ thuật cộng hưởng từ trong đánh giá u tế bào đệm

12/04/2019 20:45:31 | 0 binh luận

Advanced magnetic resonance imaging in evaluation of glioma

SUMMARY

Glioma is the most common primary cerebral tumor which has a poor prognosis, high disability and fatalityespecially in high grade gliomas. The current standard of imaging technique for evaluating glioma is conventional MRI. Basic cMRI sequences are T1W, T2W, FLAIR, T1W+Gd. Conventional MRI provides critical clinical information about gliomas. Unfortunately, conventional MRI is nonspecificity, not reflect the complicated biology, has a limited capacity to grading and differentiate gliomas from other pathologies such as: inflammation,MS… Recently, there is a development of many new MRI techniques and these application have increased such as diffusion-weighted imaging, diffusion-tensor, tractography, perfusion, spectroscopy and functional MRI. These techniques provided complementary information to cMRI for assessing tumor in cellularity, white matter invasion, hypoxia, necrosis, vascularization, permeability and relation tumor with functional areas. They give more accurate in diagnosis, planning pre-surgery and monitoring post-therapy. This lecture introduces an principle and clinical application of these advanced MRI techniques in cerebral gliomas which were performed at Choray hospital.

Keywords: Glioma, conventional MRI, diffusion-weighted, diffusion-tensor, tractography, perfusion, spectroscopy, functional MRI.

Chẻ đôi đốt sống thể kín: Báo cáo loạt ca

Chẻ đôi đốt sống thể kín: Báo cáo loạt ca

03/30/2020 22:50:48 | 0 binh luận

Closed spina bifida: Case series report

ABSTRACT:

Introduction: Imaging of closed spina bifida is very multiform, can diagnose in utero.

Objective: Describe the imaging features of closed spinal bifida, classify the usual closed spina bifida. Methods: case series report, prospective study

Conclusions: The important role of ultrasound in prenatal closed spinal bifida diagnosis. Identify the cranial sign and spinal defection to classify the type of closed spina bifida, to make fetal prognosis , to orientate in antenatal counseling

Key words: Closed spina bifida, Spinal dysphaphism

Cập nhật chụp cắt lớp vi tính trong bệnh lý tim mạch

Cập nhật chụp cắt lớp vi tính trong bệnh lý tim mạch

03/17/2020 10:59:11 | 0 binh luận

CT scan of cardiovascular disease: An update

SUMMARY

Coronary artery disease is the leading cause of death in the United States, in developing countries, coronary artery disease is rising rapidly. It’s been projected that by 2020, chronic diseases will account for almost three-fourths all deaths, 71% deaths due to ischemic heart disease. Early detection of coronary artery lesion helps to reduce mortality and improve quality of life by risk factors control and stabilize atherosclerotic plaques.

The newest commercially available MDCT scanners offer the greatest degree of spatial and temporal resolution owing to multidetector channels, fast gantry rotation times and thinner collimation. These parameters are important to creation of high definition coronary artery MDCT imaging.

In the case of acute chest pain, CT also proved safe, effective, low-cost, reduced the number of emergency visits and hospitalization. In addition to the accurate diagnosis, CT of coronary artery disease also evaluated other heart diseases such as congenital heart disease, pericardium, cardiomyopathy, heart valve

New developments such as FFR-CT, iFR-CT or Myocardial perfusion assessment show that computed tomography for cardiovascular disease diagnosis will be more potential in the future.

Keywords: coronary computed tomographic angiography, cardiac computed tomography, multi-detector computed tomography for cardiovascular disease diagnosis.

U tế bào quanh mạch nguyên phát ở xương chày - Báo cáo một trường hợp hiếm và tổng kết trên y văn

U tế bào quanh mạch nguyên phát ở xương chày - Báo cáo một trường hợp hiếm và tổng kết trên y văn

03/26/2020 22:33:38 | 0 binh luận

Primary haemangiopericytomas of tibia - a rare case report and review in litterature

SUMMARY

Hemangiopericytomas (HPCs) are rare vascular tumors arising from pericytes. Therefore HPCs have a wide distribution in both soft tissue and skeletal system, with the latter being the most unusual occurrence. Currently, there are about 74 cases of osseous HPC have been reported in the available English literature, only five of them located in the tibia. Primary hemangiopericytomas of bone usually occurs in pelvis, vertebrae and long bones of lower extremities. The prognosis of the tumor behaviour is still not feasible and it has the potential to demonstrate a highly malignant course. We introduce a case of primary HPCs of bone located in tibia, which received a treatment by widen resection and bone transportation.

Keywords: u tế bào quanh mạch, u xương/ hemangiopericytoma, bone tumor.

Đặc điểm hình ảnh XQUANG của tổn thương đa chồi xương có tính chất di truyền: Nhân một trường hợp

Đặc điểm hình ảnh XQUANG của tổn thương đa chồi xương có tính chất di truyền: Nhân một trường hợp

03/26/2020 22:26:41 | 0 binh luận

Imagings of hereditary multiple exostosis (hme): A case report

SUMMARY

Osteochondromatosis or Hereditary Multiple Exostoses (HME) is a rare disease which is inherited in an autosomal dominant manner, there are many osteochondromas at the appendicular skeleton. This report presents the patient who had typical clinical and radiologic features of the disease. Female patient, 24 years old, she has a pain both lower limbs, there are slight deformity both upper and lower limbs on the examination. On the X-rays of the limbs present many osteochondromatosis at the meta-physeal regions of long tubular bone, it may be pedunculated or broad-based form, the pedunculated appearance follow the direction away from the epiphysis and towards the diaphysis follow-ing the tendon pill. With characteristic features on the plain radiology: the final diagnosis is hereditary multiple exostosis.

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