This paper studies the features of the circle of Willis and cerebral aneurysm in patients with cerebral aneurysms through films of Multi-slice Computed Tomography (MSCT) at the Department of Radiology, Bach Mai Hospital, from March 2017 to March 2018. The study results show that female/male ratio was 2.37: 1; the number of patients with only one aneurysm accounted for 90.68%; Saccular aneurysm was more common than lozenge-shaped aneurysm; the rate of aneurysm ruptures was 82.35%; the bulge was mainly distributed in the carotid artery (94.6%). The very small bulge (less than 3mm) and the small bulge (3-7mm) were most common and accounted for 33.33% and 49.62%, respectively. The variations of the circle of Willis were very diverse and complex, including 13 forms, four of which were the circle of Willis anterior part variants and nine transformations were the circle of Willis posterior variants. Abnormalities (aplasia, hypoplasia) of the anterior communicating arterial were 8.48% and abnormalities of the posterior communicating arterial were 82.6%. The paper concludes that the abnormal anatomical variations in the circle of Willis can facilitate the early diagnosis and treatment of cerebral aneurysm disease. Keywords Circle of Willis, cerebral aneurysm, MSCT. References [1] C.S. Hee, L.J. Ye, R.K. Hwa, et al. Diagnosis of Cerebral Aneurysm Via Magnetic Resonance Angiography Screening: Emphasis on Legal Responsibility Increases False Positive Rate, Neurointervention 13(1) (2018) 48-53. [2] T.A. Tuan, Research the value of the diagnosis of cerebral aneurysm by 64 slices computer tomography, Graduate thesis in resident doctor, Hanoi Medical University, 2008 (in Vietnamese).[3] M.W. Son, J.W. Park, K.J. Park, et al, Prognostic Factors of Clinical Outcome after Aneurysmal Clipping in the Aged Patients with Unruptured Intracranial Aneurysm, Journal of Neurointensive Care 3(1) (2020) 20-25. [4] H.M. Tu, N.X. Khoa, Study on the anatomical changes of the cerebral arteries on the MSCT 64 imaging, Thesis Master of Medicine, Hanoi Medical University, 2012 (in Vietnamese).[5] Z. Molnar, W. Thomas (1621-1675), the founder of clinical neuroscience, Nat Rev Neurosci 5(4) (2004) 329-335. [6] Q. Li, J. Li, F. Lv, et al., A multidetector CT angiography study of variations in the circle of Willis in a Chinese population, J Clin Neurosci. 18(3) (2011) 379–383.[7] A. Karatas, G. Coban, C. Cinar, et al., Assessment of the Circle of Willis with Cranial Tomography Angiography, ed Sci Monit. 21 (2015) 2647–2652, [8] S.A. Gunnel, M.S. Farooqui, R.N. Wabale, Anatomical variations of the circulus arteriosus in cadaveric human brains, Neurol Res Int.: 687281, http://doi.org/10.1155/2014/687281, indexed in Pubmed: 24891951 (2014).[9] I.Ö. Yeniçeri, Circle of Willis variations and artery diameter measurements in the Turkish population, Via Medica 76 (3) (2017) 420–425.

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This study investigates the value of magnetic resonance (MR) in assessing size, invasion, lymph node metastasis and cervical cancer stage classification in 117 patients who underwent surgery for whole hysterectomy and pelvic lymph node dredge in Vietnam National Cancer Hospital from July 2016 to August 2018. The study results show that tumor size accuracy (Acc) was 93.2%; vaginal invasion Sp was 98.2%; Acc, 96.6%, NPV, 98.2%; parametrial invasion Sp, 98.2%; Acc, 98.3%, NPV, 100%; pelvic wall invasion Acc , 98.3%; Sp was 115/116, 99.1%; NPV, 99.1%; metastatic lymph node Sp, 98.0%; Acc, 88.9%; NPV, 89.8%. The Acc of the value of MR in cervical cancer stage diagnosis from stage IB was 96.1%; and the overall Acc was 82.9%. The study results also show that the use of MRI in combination with clinical examination in size, invasion, metastasis and cervical cancer stage classification is necessary to improve the accuracy of the diagnosis.      Keywords  Cervical cancer, MRI of cervix. References [1] Globocan Cervical Cancer, Estimated Incidence, Mortality and Prevalence Worldwide in 2012. http://globocan.iarc.fr/old/FactSheets/ cancers/cervix - new.asp (accessed 30.06.2017). [2] Sala E, Wakely S, Senior E et al. MRI of malignant neoplasms of the uterine corpus and cervix. AJR Am J Roentgenol 188(6) (2007) 1577. [3] Hricak H, Lacey CG, Sandles LG et al. Invasive cervical carcinoma: comparison of MR imaging and surgical findings. Radiology 166(3) (1988) 623.[4] Ngo Thi Tinh, Research invasive level of cervical cancer on stage IB-IIA by clinical, magnetic resonance image and treatment results at K Hospital from 2007-2009. Doctor of Medicine thesis, Hanoi Medical University, 2011 (in Vietnamese).[5] Doan Van Ngoc. Research image characteristics and values of 1.5 tesla magnetic resonance in stage classification and follow treatment of cervical cancer. Doctor of Medicine thesis, Hanoi Medical University, 201 (in Vietnamese).[6] Susan JF, Ahmed MA, Masako YK et al. The Revised FIGO Staging System for Uterine Malignancies: Implications for MR Imaging. RadioGraphics 32(6) (2012). [7] Corrigendum to: Revised FIGO staging for carcinoma of the cervix uteri; Int J Gynecol Obstet 145 (2019) 129.[8] Hoang Duc Kiet. Magnetic resonance image of abdomen and pelvis. Medical Publishing House, (2016), pp.31-44, 329-334 (in Vietnamese).[9] Bourgioti C, Koutoulidis V, Chatoupis K et al. MRI findings before and after abdominal radical trachelectomy (ART) for cervical cancer: a prospective study and review of the literature. Clin Radiol. 69 (2014) 678.[10] Charis B, Konstantinos C, Lia AM, Current imaging strategies for the evaluation of uterine cervical cancer, World J Radiol, 28; 8(4) (2016) 342.  

This study was carried out on 64 patients with a preoperative diagnosis of cholecystitis and preoperative ultrasound at E hospital. Results: mean age was 57.4 ± 16.1; male/female = 1/1.3; 95.3% cholecystitis with gallstones; 100% of chronic cholecystitis had gallstones, gallstones stuck in gallbladder neck accounted for 18.7%; gallbladder wall thickening accounts for 67.2%, in acute cholecystitis, this rate accounts for 90%; Sono-Murphy (+) accounted for 67.2%; in the group of patients with acute cholecystitis, this sign accounts for 95%. Peri-gall bladder fluid accounts for 60% of acute cholecystitis. Value of ultrasound in diagnosis: gallstones Se 100%; Acc 96.9%; PPV 96.7%; stones stuck in gallbladder neck: Se 42.8%; Sp 88%; Acc 78.1%; PPV 50%; NPV 84.6%; gallbladder wall thickness: Se 88.9%; Sp 60.7%, Acc 76.6%; PPV 74.4%, NPV 80.9%; fluid around the gallbladder: Se 82.1%; Sp 94.4%; Acc 89.1%; PPV 92.0%; NPV 87.2%; fat infiltration around the gallbladder: Se 35.7%; Sp 100%; Acc 71.9%; PPV 100%; NPV 66.7%; cholecystitis: Se 70.3%, Acc 70.3%; PPV 70.3%. Conclusion: Ultrasonography is reliable enough in the diagnosis of cholecystitis. Keywords: Cholecystitis, gallstones, ultrasound.    

Objectives: This study was done to describe the imaging characteristics of acute appendicitis on multislice computed tomography (MSCT) and the value of MSCT scan in the diagnosis of acute appendicitis. Methods: The study used retrospective and cross-sectional methods to analyze the results of 117 patients who were taken photos of CT at E Hospital from February 2021 to November 2021. Results: The most common age was over 50 years old, and the average age was 40.1±20.8. The ratio of male/female was 1/1.25. Locations of appendix: right iliac fossa 69.2%, posterior cecum 16.2%, pelvis 12%, subhepatic 0.9%, 1.7% in other places in the abdomen. The diameter of appendicitis was 10.48±2.5mm (the min was 5mm, the max was 18mm). The increase of diameter over 7mm accounted for 95.7%, appendiceal wall thickness ≥ 3mm had 83.8% of patients, and fat infiltration was seen in 88% of cases studied. Other signs: fecal stones 35%, fluid around appendix 7.7%, Douglas fluid 3.4%, right iliac fossa fluid 3.4%, mesenteric lymphadenopathy 25.7%. The rate of appendix rupture diagnosed by CT accounted was 4.3%. The sensitivity, accuracy, and positive diagnostic value of multislice CT in the diagnosis of acute appendicitis were 97.4%, 96.6%, and 99.1%, respectively. Conclusion: Multislice CT has a high value in the diagnosis of acute appendicitis.