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Valorisation of Auriferous Indices: Case of the Siribaya Deposit, Western Mali

Open Journal of Geology 2021年第10期11卷 457-470页

作者： Fodé Tounkara Jianguo Chen Mory Sidibe Oumar Soumare Adama youssouf koné Université de Ségou Ségou Mali State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan China Ecole Nationale d’Ingènieurs Abderhamane Baba Touré Bamako Mali Laboratoire de Cartographie Département de Géologie Faculté des Sciences et Techniques (FST) Université des Sciences des Techniques et des Technologiques de Bamako (USTTB) Bamako Mali

The purpose of this paper is to understand the valorization of gold showings in the Seribaya deposit, western Mali. Samples taken from Air Core (AC) boreholes were subjected respectively to the magnetic susceptibility test and the X-ray fluorescence analysis. These results lead to the development of a simple methodology, based on signatures/indicators geochemical to identify lithology or to locate mineralization. We note that, compared to other chemical elements, Arsenic remains the most correlated with gold in the study area. Since this correlation remains weak (r = 0.16), it shows that Arsenic does not always accompany gold. There would be a generation of Arsenic related to mineralization, and other generations that would not be. The observation of the strip logs led to the identification of the lithologies (focusing on the immobile elements, Ti, V, Cr, Y, Zr) and the establishment of the alteration profile. Highly altered levels (Saprolite ± Saprock) are characterized by the disappearance of most mobile elements. A medium to strong correlation between gold mineralization and magnetic susceptibility measurements has been observed, in some places, and at depths. These mineralized intervals typically consist of quartz veins, suggesting that they have structural control over the mineralization. Gold mineralization is believed to be related to quartz veins. In addition, gold would be in paragenesis with a generation of Arsenic hosted in coarse sediments.

关键词： Valorization Gold Index Strip Logs Magnetic Susceptibility

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Giant Aneurysmal Bone Cyst of the Right Femur about a Case

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Open Journal of Radiology 2023年第3期13卷 139-145页

作者： Cheick Oumar Keïta Aboudramane konaté Yacouba Drissa Traoré youssouf koné Abdoulaye koné Issa Diarra Ilias Guindo Salia Coulibaly Mahamadou Diallo Siaka Sidibé Radiology Department Mohammed VI Perinatal Clinic Bamako Mali Radiology Department County Hospital of Sikasso Sikasso Mali Radiology Department CNAM Bamako Mali Radiology Department Jacques Boutard Hospital Center Saint Yrieix La Perche France Medical Imaging Department University Hospital of Point G Bamako Mali Medical Imaging Department University Hospital of Kati Kati Mali Medical Imaging Department Gabriel Touré University Hospital Bamako Mali

Aneurysmal bone cyst (ABC) is a rare bone tumor accounting for 1% - 4% of benign bone tumors. Its etiopathogenesis remains unknown. The main site is the metaphysis of the long bones. ABC occurs almost exclusively in young people, with a slight female predominance. We report an exceptional case of ABC of the femur with involvement of the right hip in a 16-year-old girl in the Medical Imaging Department of Pr Bocar Sidy Sall Hospital of Kati (Mali). We will discuss the clinical and radiological aspects of this pathology. Observation: Mrs N C., aged 16, was referred to the orthopaedic-traumatology department for an X-ray of the right thigh, indicated as having a large, disabling thigh. Clinical examination revealed a large thigh measuring 890 mm in circumference, compared with 300 mm on the contralateral side. Radiographically, the femur showed a blown appearance, with the cortex thinned and broken in places. Exceptionally, the lesion affected the entire femur. On CT scan, we found a voluminous fluid collection occupying the entire right femur, including the right femoral head and homolateral ischium. The cortex was interrupted in places, and the adjacent soft tissues were thinned or laminated, but not infiltrated. Histology revealed haemorrhagic and inflammatory elements compatible with the diagnosis of ABC. Conclusion: ABC is a tumor entity that is often difficult to diagnose. Medical imaging, topographical distribution and histology form an indissociable whole to establish a diagnosis of certainty.

关键词： Aneurysmal Bone Cyst Medical Imaging Femur

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Geochemistry of Magmatic Rocks of the Syama Belt, Southern Mali, West African Craton

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Open Journal of Geology 2022年第3期12卷 250-272页

作者： Dasso Yollande Traoré Seko Sanogo Adama youssouf koné Ismaïla N’Diaye Mamadou Lamine Bouaré Didier Béziat Laboratoire de Cartographie DER de Géologie Faculté des Sciences et Techniques (FST) Université des Sciences des Techniques et des Technologies de Bamako (USTTB) Bamako Mali Laboratoire de Minéralogie et de Pétrologie DER de Géologie Faculté des Sciences et Techniques Université des Sciences des Techniques et des Technologies de Bamako Bamako Mali Ecole Nationale d’Ingénieurs Abdramane Baba Touré (ENI-ABT) Bamako Mali Université Paul Sabatier de Toulouse Toulouse France

Within southern Mali, the Syama belt constitutes a linear major structure-oriented N-S, which host several gold deposits (e.g., Syama and Tabakoroni) and prospect areas (e.g. Tellem). The Syama Belt is formed by magmatic rocks (basalts, lamprophyres, andesites, dacites and microgranites);sedimentary rocks (shales) and volcano-sedimentary rocks (pyroclastics). The magmatic rocks are divided into two main volcanic series: tholeiitic affinity rocks (basalts and lamprophyres) and calc-alkaline affinity (andesites) that are the most evolved. The field relationships between rocks of these two series suggest that the calc-alkaline series are younger the tholeiitic series. These tholeiitic series present the Mid-Ocean Ridge Basalt (MORB) affinity whereas the calc-alkaline series would be linked to an island arc-type. This coexistence is not an isolated case within the West African Craton (WAC). Otherwise, the Syama belt has all the characteristics of other belts, within which a number of gold deposits are developed, in the WAC.

关键词： Syama Belt Magmatic Rocks MORB Boualé-Mossi Domain Southern Mali West African Craton (WAC)

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Reliability of Medical Imaging in the Pre-Therapeutic Assessment of Acute Intestinal Obstruction at the Centre Hospitalier Universitaire Du Point “G”.

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Open Journal of Medical Imaging 2022年第3期12卷 147-156页

作者： Abdoulaye koné Mahamadou Daou youssouf koné Moussa Traoré Moussa konaté Ouncoumba Diarra Ibrahima Coulibaly youssouf Diawara Amadou Doumbia Cheick Oumar Touré Kassim Sidibé Mody A. Camara Oumar Aba Ata Mahamadou Diallo Adama Diaman Keita Salia Coulibaly Zimogo Zié Sanogo Siaka Sidibe Faculty of Medicine and Odontostomatology Bamako Mali Medical Imaging Department of the University Hospital of Point G Bamako Mali Radiology Department of the Jacques Boutard Hospital Saint-Yrieix-la-Perche France Medical Imaging Department of GABRIEL TOURE Hospital Bamako Mali Radiology Department of CSREF Commune III Bamako Mali Medical Imaging Service Health Center of Ref Commune VI Bamako Mali Medical Imaging Service Health Center of Ref Commune IV Bamako Mali DCSSA Kati Mali Medical Imaging Department of Mali Hospital Bamako Mali Medical Imaging Department of Kati Hospital Bamako Mali Department of General Surgery of Point G University Hospital Bamako Mali

Introduction: Acute intestinal obstruction is a serious pathology, a surgical emergency for which medical imaging plays an important role in the management. We initiated this work in order to study the contribution of imaging in the diagnosis of acute intestinal obstruction at the Point-G University Hospital. Patients and Methods: This was a prospective, descriptive and analytical study of 96 patients collected at the radiology and medical imaging department of CHU Point-G from January 2018 to January 2019. Results: The age of our patients varied from 11 to 86 years, with an average of 36 years old. There was a male predominance of 64.6% against 35.4% for women, i.e., a sex ratio of 1.82. Previous surgery was found in 61.5% of our patients. The pain was present in all patients. An unprepared abdominal X-ray was performed in 89.6% of patients. Hydroaerobic levels were found in 96.5% of patients. Abdominopelvic CT scans were performed on 12 patients, all of whom were diagnosed with occlusion. These positive diagnostic findings were consistent with intraoperative findings in 92% of cases. The causes were dominated by bridges in 46 patients and tumors in 9 patients. Signs of severity on CT were dominated by signs of distress of the upstream bile ducts in 8.3%. Exactly 8% of our patients spontaneously resumed transit, 91% received surgical treatment and 1% died before surgery. The outcome was favorable in 80 patients (83.3%) and poor with death in 16 patients (16.7%). Conclusion: Acute intestinal obstruction remains a serious pathology for which the X-ray of the PSA is often the only radiological examination performed in an emergency. However, abdominopelvic CT seems to us to be widely indicated thanks to its contribution both to the positive diagnosis and to the diagnosis of severity and etiology. However, this imaging technique is widely underused in our practice because of its high cost and lack of availability.

关键词： Medical Imaging Acute Intestinal Obstruction Abdominal CT Reliability

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Feasibility of Scanopelvimetry in the Medical Imaging Department of the University Hospital of Point “G”.

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Open Journal of Medical Imaging 2022年第3期12卷 157-164页

作者： Abdoulaye koné Moussa konaté youssouf koné Moussa Traore youssouf Diawara Ibrahima Coulibaly Ouncoumba Diarra Fatoumata Kalapo Amadou Doumbia Kassim Sidibe Cheick Oumar Touré Oumar Aba Ata Mody A. Camara Mamadou Sima Coulibaly Salia Mahamadou Diallo Adama Diaman Keita Siaka Sidibé Faculty of Medicine and Odontostomatology Bamako Mali Medical Imaging Department of the University Hospital of Point G Bamako Mali Radiology Department of the Jacques Boutard Hospital Saint-Yrieix-la-Perche France Medical Imaging Department of GABRIEL TOURE Hospital Bamako Mali Radiology Department of CSREF Commune III Bamako Mali Medical Imaging Service Health Center of Ref Commune VI Bamako Mali DCSSA Kati Mali Medical Imaging Service Health Center of Ref Commune IV Bamako Mali Medical Imaging Service of the Mali Hospital Bamako Mali. Surgery of Gynecology-Obstetrics CHU Point G Bamako Mali Medical Imaging Department CHU BSS Kati Mali

Purpose: The purpose of our study was to describe the technique of scanopelvimetry used in the radiology department of the Point G University Hospital, to specify the indications of scanopelvimetry in the department and to evaluate the cost of radiopelvimetry. Patients and Method: This was a prospective, cross-sectional study that took place over a 12-month period from January 1 to December 31, 2018. It focused on pregnant women in whom scanopelvimetry was performed in the medical imaging department of Point G University Hospital during the study period. Results: Out of 8615 CT examinations performed in the radiology department, we collected 65 cases of scanopelvimetry, i.e., 0.7% of the CT examinations. Primigravida and paucigravida dominated the study (40% each). In 60% of the pregnant women the height was less than 150 cm. The most frequent indication for CT scanning was clinical pelvic narrowing (50%). In 80% of the cases, the scanopelvimetry was performed after 37 weeks of amenorrhea. A predominance of narrowing of the superior strait was noted (40%). 4.6% of the pregnant women had a Magnin index of less than 20. CT scanopelvimetry is a feasible examination in our context but the level of demand is low because of the high cost of the examination (49500 fca). Conclusion: In light of the results obtained, we can say that CT pelvimetry allows us to predict the probable route of delivery and thus we can reduce the risk of fetomaternal morbidity and mortality to improve maternal and child health.

关键词： Scanopelvimetry Prognosis Magnin Index Delivery

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Contribution of Computed Tomography in the Diagnosis of Pulmonary Lesions Due to Coronavirus Disease (SRAS-CoV-2), COVID-19

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Open Journal of Radiology 2022年第3期12卷 68-77页

作者： Abdoulaye koné Saloum Gandéga youssouf koné Moussa Traoré Moussa konaté Jean Paul Dembélé Ouncoumba Diarra Ibrahima Coulibaly youssouf Diawara Cheick Oumar Touré Kassim Sidibé Mody A. Camara Oumar Aba Ata Yacouba Toloba Jean Steiner Mahamadou Diallo Adama Diaman Keita Salia Coulibaly Siaka Sidibe Faculty of Medicine and Odontostomatology Bamako Mali Medical Imaging Department of the Pasteur Polyclinic Bamako Mali Medical Imaging Department of the Robert BALLANGER Hospital AulnaySB Ile de France France Radiology Department of the Jacques Boutard Hospital Saint-Yrieix-la-Perche France Medical Imaging Department of GABRIEL TOURE Hospital Bamako Mali Medical Imaging Department of the University Hospital of Point G Bamako Mali Infectious Disease Department of the University Hospital of Point G Bamako Mali Radiology Department of CSREF Commune III Bamako Mali Medical Imaging Service Health Center of Ref Commune IV Bamako Mali DCSSA Kati Mali Medical Imaging Department of Mali Hospital Bamako Mali Pneumology Department of the University Hospital of Point G Bamako Mali Medical Imaging Department of Kati Hospital Kati Mali

Our study was carried out at Robert BALLANGER Hospital, its aim was to determine the contribution of the scanner in the diagnosis of COVID-19. It was a prospective descriptive study during the first wave of the COVID-19 epidemic in France. Patients were referred to the medical imaging department for a thoracic CT scan without contrast injection or an angioscanner in the context of a suspected COVID-19 pneumopathy or pulmonary embolism. The study involved both sexes, the male sex was with 55.20% and sex ratio of 1.24. In our study 50% of our patients had a comorbid factor, of which diabetes and hypertension were the most represented with 33% and 17%. The RT PRC test is considered the gold standard in the diagnosis of COVID-19 disease. This test was positive in 63.62% of our patients. CT imaging played a key role in the management of COVID-19 pneumonia because chest CT scans found lesions consistent with COVID-19 pneumonia in 71% of patients. The depoliated lung lesion was present in 87% of our patients, with sub pleural topography and minimal parenchymal involvement predominating. In our study, the chest CT scan had a higher sensitivity and a lower specificity than the PCR test.

关键词： Contribution CT COVID-19 SARS-CoV-2 Diagnosis Lungs France

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Prevention of Venous Thromboembolism in General Surgery at Gabriel TouréUniversity Hospital in Mali

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Surgical Science 2021年第3期12卷 67-75页

作者： Amadou Traoré Madiassa konaté Abdoulaye Diarra koniba Keïta Kadia Traoré Zakari Saye youssouf koné Boubacar Yoro Sidibé Amadou Maïga Amadou Bah Bouréima Kelly Tani koné Boubacar Karembé Souleymane Thiam Assitan koné Drissa Bagayogo Bakary Tientigui Dembélé Alhassane Traoré Ibrahim Diakité Lassana Kanté Adégné Togo Gabriel Touré University Hospital Bamako Mali

Through its impact on morbidity and mortality and the cost of medical care, Venous Thromboembolism (VTE) has a significant influence on the quality of care in a surgical environment. The objectives were to determine the risk of postoperative venous thromboembolism and to assess its prophylactic management in the general surgery department of Gabriel Toure University Hospital. This was a prospective observational study from May 01, 2018 to December 31, 2018. It included all patients of 18 years old and over, operated in regulated surgery, under general anesthesia in the department. For all of these patients, Caprini score was used to assess the risk of VTE. The ninth American College of Chest Physicians’ Consensus was used as guidelines to assess Thromboprophylaxis practices in the ward. The Caprini score was evaluated in 80 patients for 8 months. The average age was 50.2 years. The sex ratio was 0.48. The risk level of VTE was low in three patients (3.8%), moderate in 13 patients (16.3%), high in 34 patients (42.5%) and highest in 30 patients (37.5%). The main risk factors found were major surgery (87.5%), age > 40 years (72.5%), cancer (33.8%), bed rest (31.2%), obesity (27.5%) and minor surgery (12.5%). Early mobilization was performed in all patients. Pharmacologic prophylaxis was required in 80% of our patients but only 38.8% had received low molecular weight heparin. VTE complicated 5 procedures, including 3 cases of deep vein thrombosis of the limbs and 2 cases of pulmonary embolism who died. Venous thromboembolism is serious and common in surgical settings. Its prevention remains insufficient in our context.

关键词： Venous Thromboembolism Prevention Surgery Mali

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Valorisation of Auriferous Indices: Case of the Siribaya Deposit, Western Mali

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Open Journal of Geology 2021年第10期

作者： Fodé Tounkara Jianguo Chen Mory Sidibe Oumar Soumare Adama youssouf koné

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Giant Aneurysmal Bone Cyst of the Right Femur about a Case

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Open Journal of Radiology（放射学期刊） 2023年第3期

作者： Cheick Oumar Keïta Aboudramane konaté Yacouba Drissa Traoré youssouf koné Abdoulaye koné Issa Diarra Ilias Guindo Salia Coulibaly Mahamadou Diallo Siaka Sidibé

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Reliability of Medical Imaging in the Pre-Therapeutic Assessment of Acute Intestinal Obstruction at the Centre Hospitalier Universitaire Du Point “G”

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Open Journal of Medical Imaging 2022年第3期

作者： abdoulaye koné mahamadou daou youssouf koné moussa traoré moussa konaté ouncoumba diarra ibrahima coulibaly youssouf diawara amadou doumbia cheick oumar touré kassim sidibé mody a.camara oumar aba ata mahamadou diallo adama diaman keita salia coulibaly zimogo zié sanogo siaka sidibe

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