放射学实践
放射學實踐
방사학실천
RADIOLOGIC PRACTICE
2014年
8期
864-866
,共3页
张晓凡%秦阳%朱凯%刘鑫春
張曉凡%秦暘%硃凱%劉鑫春
장효범%진양%주개%류흠춘
儿童%磁共振成像%全身扩散加权成像%健康人群%诊断
兒童%磁共振成像%全身擴散加權成像%健康人群%診斷
인동%자공진성상%전신확산가권성상%건강인군%진단
Children%Magnetic resonance imaging%Whole body diffusion-weighted imaging%Healthy population%Diagnosis
目的：探讨不同年龄组健康小儿全身扩散加权成像（WB-DWI）表现，为此技术应用于临床疾病的诊断奠定基础。方法：70例健康体检儿，年龄1个月～15岁，按照年龄分成3组：1～12个月、1岁以上～5岁、5岁以上～15岁，在家长知情同意下接受 WB-MRI 检查，比较不同年龄组之间全身扩散加权图像上信号的差异，并进行相关性分析。结果：WB-DWI 上双肺、纵隔、肝脏、胰腺及周围软组织呈低信号，脑、脾、肾、睾丸及充盈的膀胱呈高信号，各脏器之间信号无明显差异。四肢长管状骨干骺端及骨干信号强度均随年龄增长而逐渐减低。1个月左右的小儿在 WB-DWI 上显示四肢骨结构模糊；在2～12个月组长管状骨干骺端表现为高信号者占66．7％，在12个月以上～5岁组占43．4％，5～15岁组为7．7％；长管状者骨干表现为高信号者在2～12个月组占28．6％，1岁以上～5岁组占17．3％，5岁以上～15岁组高信号基本消失。颈部、腋窝、颌下、髂血管周围淋巴结及中下腹、盆腔内部分肠管在 WB-MRI 上也显示为高信号。结论：WB-DWI技术作为一种无创性检查可在较短时间内完成小儿全身检查，图像能够满足临床诊断要求。正确认识小儿 WB-DWI 正常表现，为临床诊断疾病奠定基础。
目的：探討不同年齡組健康小兒全身擴散加權成像（WB-DWI）錶現，為此技術應用于臨床疾病的診斷奠定基礎。方法：70例健康體檢兒，年齡1箇月～15歲，按照年齡分成3組：1～12箇月、1歲以上～5歲、5歲以上～15歲，在傢長知情同意下接受 WB-MRI 檢查，比較不同年齡組之間全身擴散加權圖像上信號的差異，併進行相關性分析。結果：WB-DWI 上雙肺、縱隔、肝髒、胰腺及週圍軟組織呈低信號，腦、脾、腎、睪汍及充盈的膀胱呈高信號，各髒器之間信號無明顯差異。四肢長管狀骨榦骺耑及骨榦信號彊度均隨年齡增長而逐漸減低。1箇月左右的小兒在 WB-DWI 上顯示四肢骨結構模糊；在2～12箇月組長管狀骨榦骺耑錶現為高信號者佔66．7％，在12箇月以上～5歲組佔43．4％，5～15歲組為7．7％；長管狀者骨榦錶現為高信號者在2～12箇月組佔28．6％，1歲以上～5歲組佔17．3％，5歲以上～15歲組高信號基本消失。頸部、腋窩、頜下、髂血管週圍淋巴結及中下腹、盆腔內部分腸管在 WB-MRI 上也顯示為高信號。結論：WB-DWI技術作為一種無創性檢查可在較短時間內完成小兒全身檢查，圖像能夠滿足臨床診斷要求。正確認識小兒 WB-DWI 正常錶現，為臨床診斷疾病奠定基礎。
목적：탐토불동년령조건강소인전신확산가권성상（WB-DWI）표현，위차기술응용우림상질병적진단전정기출。방법：70례건강체검인，년령1개월～15세，안조년령분성3조：1～12개월、1세이상～5세、5세이상～15세，재가장지정동의하접수 WB-MRI 검사，비교불동년령조지간전신확산가권도상상신호적차이，병진행상관성분석。결과：WB-DWI 상쌍폐、종격、간장、이선급주위연조직정저신호，뇌、비、신、고환급충영적방광정고신호，각장기지간신호무명현차이。사지장관상골간후단급골간신호강도균수년령증장이축점감저。1개월좌우적소인재 WB-DWI 상현시사지골결구모호；재2～12개월조장관상골간후단표현위고신호자점66．7％，재12개월이상～5세조점43．4％，5～15세조위7．7％；장관상자골간표현위고신호자재2～12개월조점28．6％，1세이상～5세조점17．3％，5세이상～15세조고신호기본소실。경부、액와、합하、가혈관주위림파결급중하복、분강내부분장관재 WB-MRI 상야현시위고신호。결론：WB-DWI기술작위일충무창성검사가재교단시간내완성소인전신검사，도상능구만족림상진단요구。정학인식소인 WB-DWI 정상표현，위림상진단질병전정기출。
Objective:To investigate the findings of whole body diffusion-weighted imaging (WB-DWI)in children of different age groups,in order to obtain the basic reference for the diagnosis of clinical diseases.Methods:70 healthy children (0~15y of age)were divided into 3 groups according to age:less than 12 m,12m to 5y and more than 5y.Consent was signed by parents and agreed to accept body magnetic resonance diffusion weighted imaging (WB-DWI).Difference of signal intensities on WB-DWI of different age groups were compared and correlation analysis was performed.Results:Bilateral lungs,mediastinum,liver,pancreas and soft tissue showed low signal intensity whereas brain,spleen,kidney,scrotum and fulfilled urinary bladder showed high signal intensity.No obvious difference could be revealed in different organs.The signal intensity of metaphysis and diaphysis in long bones of extremities reduced gradually following increase of age.On WB-DWI, inconspicuous bone structure of extremities was found in infants 1m of age.High signal intensity of metaphysis could be seen in 66.7% of infants around 1m of age;in 43.4% of 1~5y;7.7% in 5~15y of age.High signal intensity in diaphysis of long bone was assessed in 28.6% of infants 2~12m,17.3% in 1~5y and basically vanished in 5~15y of age.Lymph nodes in the neck,axilla,submandibular region,iliac region as well bowel in mid-lower abdomen,pelvis presented as high signal in-tensities on WB-DWI.Conclusion:WB-DWI can be used as a non-invasive whole body examination in children,the examina-tion could be completed in a relatively short period of time.The images can fulfill the requirement of clinical diagnosis.Un-derstanding of the normal manifestations of WB-DWI in children could lay the foundation for its clinical diagnostic applica-tion.
