Mammographic-guided needle localization for breast lesions SUMMARY Purpose: By 3 cases of Mammographic-guided needle localization for breast lesions, this article is aimed to discus about the technic and also to evaluate the short-term efficacy of this procedure. Materials and methods: We carry out a prospective study to describe three patients who had this technic done in Bach Mai hospital. Result: Three patients underwent this technic get the hight accuracy of needle localization, all the lesions have been totally removed, histologic-radiologic concordant and no complication . Conclusion: Needle localization with open surgical biopsy is an accurate, safe, and effective technique for diagnosis and treatment of lesions of the breast found by imaging. This technic can be performed under Mammo CR machine guiding and with a series holes compression plate. Keywords: Mammographic-guided.

Evaluation of the analgesic efficacy of the ct-guided celiac plexus neurolysis technique in 7 patients SUMMARY CT-guided celiac plexus neurolysis technique plays a role in the palliative treatment of visceral pain originating from the mesentery of transverse colon (Upper abdominal viscera). From March 2013 to August 2014, we performed this technique for 7 patients (5 males and 2 females). These patients whose VAS score shift before - after were more than 4 points have the most effective pain relief; and those whose VAS score shift were 2-4 point is 5 out of 8 (8 interventions on 7 patients) have an average effect of pain relief; the group rest whose VAS score shift were less than 2 points has no pain relief effect. Anterior approach, especially antecrural, is optimal for this procedure. The total amount of alcohol for each neurolysis injection is 20ml for the antecrural and less than 10ml for the retrocrural. CT-guided celiac plexus neurolysis technique is a simple, less invasive and effective procedure for palliative pain control.

18Flourodeoxyglucose Positron Emission Tomography/Computer Tomography (18F-FDG PET/CT) for extranodal non Hodgkin lymphoma in staging and treatment response assessment SUMMARY Background: the aim of our study to investigate the role of 18F-FDG PET/CT for extranodal lymphoma non Hodgkin in staging and treatment response’s assessment. Methods: In our center, a total of 38 consecutive B-cell non- Hodgkin extranodal lymphoma patients were newly diagnosed between December 2013 to January 2016. All these patients were undergone 18F-FDG PET/CT scan before treatment, after 3- cycle and 6-cycle chemotherapy. The assessment criteria were followed by modified Ann Aborr for staging and Lugano 2015 for treatment response. Results : there were 13.2% of patients in stage IE, 7.9% in stage II3, 21.1% in stage IIIE and 47.9% ín stage IV. According to PET/CT staging, 56.2% of patients were upstaging in comparision to CT and 26.3% of patients have been changed in treatment’s stratergies. Kappa statistics revealed that CT and PET/CT showed fair agreement for the detection of extranodal lymphoma. After 6-cycle chemotherapy, 26/38 patients had no evidence of residuals or relapse and 7/38 patients showed partial response and 5/38 patients was in advanced diseases on PET/CT imaging. The positive and negative PET/CT after 3 cylces chemotherapy may predicted the treatment’s response after 6 cylces (p=0.4). Conclusions: 18F-FDG PET/CT has higher value than CT for staging and important role in assessment of treatment’s response of extranodal lymphoma non Hodgkin patients. Key words: non - Hodgkin lymphoma, Positron Emission Tomography/Computed Tomography, treatment response assessment.

Preoperative diagnosis of obturator hernia SUMMARY The obturator hernia is a very rare type of hernia which usually presents in thin, elderly women with poor clinical signs. The preoperative diagnosis is typically difficult, with non-specific signs and symptoms which result in a delay in the diagnosis. Delayed diagnosis is a cause of increased mortality due to ruptured gangrenous bowel. We report two cases of incarcerated obturator hernia presented with a history of intestinal obstruction and the hernia was diagnosed preoperatively by computed tomography. Keywords: Obturator hernia; diagnosis, computed tomomgraphy scan.

Contrast Media Extravasation Injury SUMMARY Extravasation of contrast medium during injection, especially when doing contrast-enhanced CT, is now a common problem. The risk factors include patient factors, the class of contrast medium used, and the injection technique. The mechanisms discussed are effects of osmolality, cytotoxicity, volume, and compression. The clinical picture varies from no subjective complaints to pain, ulcers, and compartment syndrome. However, nearly all cases can be effectively handled by simple conservative treatment with a cold pack and elevation of the arm. The treatment and follow-up of the patient must be documented.

Applications ofradiation technology in the diagnosis and treatment of cancer SUMMARY: Incidence and mortality rates of cancer are currently on the top of disease pattern and the number is increasing and increasing worldwide. The impact of screening program for early diagnosis has been proved their important roles in the war against cancer because it helps increase the cure rates, decrease the mortality and morbidity rates, and therefore, reduce the economic-social burden. Advances in diagnostic imaging techniques, especially the hybrid imaging (Xray and Nuclear Medicine) such as PET/CT, SPECT/CT, PET/MRI, is important in accurate staging and these help choose the optimized treatment options to prolong survival while improve the quality of life. The treatment outcomes of cancer has certain remarkable advances based on variety of researches to modify, promote and strengthen the traditional treatments (surgery-chemotherapy-radiation) such as laparoscopic surgery, combined chemo-regimens, intensity modulated radiation therapy, volumetric modulated arc therapy, stereotactic radiation therapy, radiosurgery, PET/CT simulation, radioactive seeds implant, selective internal radiation therapy, intraoperative radiation therapy, ... as well as the emerge of new methods such as targeted therapy, immunotherapy, radioimmunotherapy, proton therapy and heavy ion. Treatment of cancer is now becoming the “invidualized treatment” with advances in biochemistry and histophathology that helps identify characteristics of tumors individually . To achieve the most optimal outcomes, cancer should be approached by a mulitprofessional team including

Variations of the hepatic arteries with 64 detector computer tomographic angiography SUMMARY: Objectives: The aim of our study was to determine the frequency of different variants of hepatic artery with multi-detector computed tomography (MDCT). Patients and methods: A total of 500 patients consecutive abdominal CT angiography performed on a 64 row CT system were evaluated. Anatomical findings were grouped according to the Michels classification. Results: An anomalous arterial pattern was observed in 20% of the cases (n=500). The most common abnormality was Michels type III (7.4%), followed by type IX (3%), type V (2.8%), type VIII (2.6%), type II (1.2%) , type VI (1%) s. Type IV, VII and X was not observed in our study. Unclassified variations were observed in 2% of the cases. Conclusions: The new generation of 64 row MDCT allows detailed visualization of the vascular anatomy. The knowledge of variant anatomy may assist in the selection of treatment options and surgical planning, which in turn facilitates surgical dissection and helps avoiding iatrogenic injury. Key Words: CT angiography, Hepatic artery.

Study of imaging characteristic and value of 64-slice CT in diagnosis of Adrenal tumor SUMMARY: Objective: This study aims to describe the characteristic and value of diagnostic adrenal tumor on 64-slice CT scanner Materials and Methods: Prospective and cross-sectional descriptive study of 39 patients were diagnosed adrenal tumor on 64-slice CT scanner. The receiver operating characteristic (ROC) curves for the value of size, the attenuation values at the unenhanced CT and the relative percentage washout (RPW) and absolute percentage washout (APW) values for the differential diagnosis of adenoma from nonadenoma. Results: Adrenal tumor was common as adenoma (16/38) with the feature of often homogeneous, clearly limited and small size (2.5 cm), and about 11.5 HU on precontrast attenuation. Pheocromocytoma was often heterogeneous, large size of 4.76cm and in conjunction with high levels of dynamic enhancement (108.3 Hu and 111.7 Hu). Tumor adrenal malignant was large size of 8.83cm, often unknown limits, infiltrates surrounding and invading IVC (2/3 cases). The area under the ROC curve and cut off with size were 0.896 and 3.29 cm, the attenuation values at the unenhanced CT were 0.984 and 24 Hu, APW were 0.937 and 57.6% and RPW were 0.994 and 43.7% (p <0.001). The sensitivity, specificity and accuracy at the threshold size of 3.29 cm were 88.2%, 90.9% and 89.7%, respectively; at threshold 24 Hu were 94.1%, 95% and 94.6%; at threshold APW = 57.6% and RPW = 43.7% were 94.1%, 85%, 89.2% and 94.1%, 100%, 97.3%, respectively. Conclusion: 64-slice CT scanner is effective methods to characterize and diagnose adrenal tumor. The relative percentage washout (RPW), absolute percentage washout (APW), the attenuation values at the unenhanced CT and the size criteria appear optimal for discriminating an adrenal adenoma from a nonadenoma. Keywords: Adrenal Gland Neoplasms, Adrenal Glands, radiography.