近年胰腺癌的發病率明顯增加，過去10年，美國及歐洲的發病率已達到8/10萬～12/10萬，我國與其相近似。胰腺癌的治療效果至今卻難以令人滿意，5年生存率無顯著提高。主要的原因是由于胰腺的位置深在，胰腺癌又缺乏特異性的臨床表現，早期診斷非常困難，大多數患者到醫院就診時已屬于Ⅱ、Ⅲ、Ⅳ期腫瘤。治愈的唯一可能性是腫瘤的外科切除，但根治性手術切除率僅為18.6%，5年生存率在0～24%。未治療者中位生存期為6～8個月。目前，隨著影像學技術、內窺鏡和腹腔鏡超聲等多項檢查手段的應用與普及，對胰腺癌能否切除可以做出較準確的術前評估，這對合理地選擇治療方法，提高手術切除率，避免不必要的“開腹探查”有著重要的意義。
摘要:目的:探討5·12汶川8.0級地震中顱面部外傷的影像學表現特點。方法: 回顧性分析自2008年5月12~31日因地震顱面部外傷在我院行CT、MRI檢查的傷員251例,其中CT檢查248例,MRI檢查16例。結果:放射檢查陽性162例,陽性率為64.54%,以40～49歲年齡組最多,為53例,其中男性41例。在放射檢查陽性中,多發傷112例(約69.13%),多類型顱面部外傷同時并存103例(約63.58%)。主要損傷發生率依次為軟組織損傷(35.50%),骨折(22.94%),腦挫裂傷(21.21%),硬膜下及硬膜外血腫(10.40%),其它(共約9.92%)。結論: 地震造成顱面部外傷人群主要為40～49歲中年男性,多發傷、多類型顱面部外傷多見,并以軟組織損傷、骨折、腦挫裂傷、硬膜下及硬膜外血腫較常見。Abstract: Objective: To describe the imaging features of head and face injured patients after the Wenchuan earthquake. Methods: The radiological information of 251 victims who were suspicious of head and face injury and underwent CT or MRI examinations from 12 May to 31 May 2008 was analysed retrospectively. There were 248 and 16 cases underwent CT or MRI examinations respectively. Results: One hundred and sixtytwo cases(64.54% )were positive. There were 53 cases in the 4049 years old age group, of which 41 were male. In patients with positive findings, 112 cases (about 63.58%) were comprised of several types of head and face injury. The incidence of the main injury type included: soft tissue injury (35.50%), fracture (22.94%), cerebral contusion (21.21%), subdural and epidural hematoma (12.40%), others (9.92%). Conclusions: The males with head and face injury in 4049 years old group were the major injured people in this earthquake. Head and face injury accompanied by multiple system injuries, the existence of several types of head and face injury at the same time were common. Among all the injury types, soft tissue injury, fracture, contusion, subdural and epidural hematoma were relatively commom.
Liver transplantation；Imaging evaluation；Donor；Recipient
Image fusion currently plays an important role in the diagnosis of prostate cancer (PCa). Selecting and developing a good image fusion algorithm is the core task of achieving image fusion, which determines whether the fusion image obtained is of good quality and can meet the actual needs of clinical application. In recent years, it has become one of the research hotspots of medical image fusion. In order to make a comprehensive study on the methods of medical image fusion, this paper reviewed the relevant literature published at home and abroad in recent years. Image fusion technologies were classified, and image fusion algorithms were divided into traditional fusion algorithms and deep learning (DL) fusion algorithms. The principles and workflow of some algorithms were analyzed and compared, their advantages and disadvantages were summarized, and relevant medical image data sets were introduced. Finally, the future development trend of medical image fusion algorithm was prospected, and the development direction of medical image fusion technology for the diagnosis of prostate cancer and other major diseases was pointed out.
Objective To introduce the imaging modalities used for the evaluation of postoperative complications of orthotopic liver transplantation (OLT) and to present the imaging findings of these complications. Methods The literatures related to the imaging methods and imaging manifestations of OLT complications were reviewed. Results Ultrasound was the initial imaging technique used for the detection of complications in the early postoperative period. Spiral CT and MRI yielded more accurate and comprehensive evaluation of postoperative complications in later stage. So far, there had been no specific imaging findings to suggest rejection reaction. The spectrum of imaging manifestations of OLT complications, such as vascular complications, biliary complications, liver parenchymal complications, and so on, were summarized and illustrated. Conclusion Imaging examination (especially ultrasound, spiral CT and MRI ) plays an important role in the evaluation of postoperative complications of OLT.
Schwannoma originating in the retroperitoneal space is relatively rare. The author reported a case of retroperitoneal Schwannoma confirmed by surgery and pathology, presented the typical CT and MRI manifestations of Schwannoma——“target signs”, described the pathophysiological mechanism and image differential diagnosis of the disease, so as to strengthen readers’ understanding of the typical signs of Schwannoma and improve the correct diagnosis rate of the disease.