中国医学影像学杂志
中國醫學影像學雜誌
중국의학영상학잡지
CHINESE JOURNAL OF MEDICAL IMAGING
2013年
4期
279-282
,共4页
肾动脉梗阻%磁共振血管造影术%流入反转恢复序列%图像增强
腎動脈梗阻%磁共振血管造影術%流入反轉恢複序列%圖像增彊
신동맥경조%자공진혈관조영술%류입반전회복서렬%도상증강
Renal artery obstruction%Magnetic resonance angiography%In-flow inversion recovery%Image enhancement
目的探讨流入反转恢复(IFIR)序列肾动脉磁共振血管成像(MRA)评估肾动脉狭窄的可行性与可靠性.资料与方法对62例拟诊为肾动脉狭窄患者同时行IFIR与对比增强MRA(CE-MRA)检查,观察肾动脉显示情况,测量肾动脉狭窄率并进行分级,比较IFIR与CE-MRA在诊断肾动脉狭窄方面的差异.结果62例患者共获得148支肾动脉(含副肾动脉),IFIR图像质量好、中、差分别为113支(76.4%)、20支(13.5%)、15支(10.1%);CE-MRA图像质量好、中、差分别为123支(83.1%)、11支(7.4%)、14支(9.5%),其中141支肾动脉图像能进行狭窄率测量,IFIR与CE-MRA测得狭窄率为0、1、2、3级的肾动脉分别为104支、18支、14支、5支和103支、22支、9支、7支,二者诊断肾动脉狭窄一致性较好(r=0.843, P<0.01).IFIR对于CE-MRA的灵敏度、特异度、准确度、阳性预测值及阴性预测值分别为81.2%、95.2%、93.6%、68.4%及97.5%.结论IFIR序列MRA在评估肾动脉狭窄率方面与CE-MRA具有较好的一致性,可作为肾功能不全患者肾动脉狭窄的诊断方法.
目的探討流入反轉恢複(IFIR)序列腎動脈磁共振血管成像(MRA)評估腎動脈狹窄的可行性與可靠性.資料與方法對62例擬診為腎動脈狹窄患者同時行IFIR與對比增彊MRA(CE-MRA)檢查,觀察腎動脈顯示情況,測量腎動脈狹窄率併進行分級,比較IFIR與CE-MRA在診斷腎動脈狹窄方麵的差異.結果62例患者共穫得148支腎動脈(含副腎動脈),IFIR圖像質量好、中、差分彆為113支(76.4%)、20支(13.5%)、15支(10.1%);CE-MRA圖像質量好、中、差分彆為123支(83.1%)、11支(7.4%)、14支(9.5%),其中141支腎動脈圖像能進行狹窄率測量,IFIR與CE-MRA測得狹窄率為0、1、2、3級的腎動脈分彆為104支、18支、14支、5支和103支、22支、9支、7支,二者診斷腎動脈狹窄一緻性較好(r=0.843, P<0.01).IFIR對于CE-MRA的靈敏度、特異度、準確度、暘性預測值及陰性預測值分彆為81.2%、95.2%、93.6%、68.4%及97.5%.結論IFIR序列MRA在評估腎動脈狹窄率方麵與CE-MRA具有較好的一緻性,可作為腎功能不全患者腎動脈狹窄的診斷方法.
목적탐토류입반전회복(IFIR)서렬신동맥자공진혈관성상(MRA)평고신동맥협착적가행성여가고성.자료여방법대62례의진위신동맥협착환자동시행IFIR여대비증강MRA(CE-MRA)검사,관찰신동맥현시정황,측량신동맥협착솔병진행분급,비교IFIR여CE-MRA재진단신동맥협착방면적차이.결과62례환자공획득148지신동맥(함부신동맥),IFIR도상질량호、중、차분별위113지(76.4%)、20지(13.5%)、15지(10.1%);CE-MRA도상질량호、중、차분별위123지(83.1%)、11지(7.4%)、14지(9.5%),기중141지신동맥도상능진행협착솔측량,IFIR여CE-MRA측득협착솔위0、1、2、3급적신동맥분별위104지、18지、14지、5지화103지、22지、9지、7지,이자진단신동맥협착일치성교호(r=0.843, P<0.01).IFIR대우CE-MRA적령민도、특이도、준학도、양성예측치급음성예측치분별위81.2%、95.2%、93.6%、68.4%급97.5%.결론IFIR서렬MRA재평고신동맥협착솔방면여CE-MRA구유교호적일치성,가작위신공능불전환자신동맥협착적진단방법.
Purpose To evaluate the feasibility and reliability of non-contrast-enhanced in-flow inversion recovery (IFIR) magnetic resonance angiography (MRA) for detection of renal artery stenosis , with breath-hold contrast–enhanced MRA (CE-MRA) as the reference standard. Materials and Methods Sixty-two patients suspected of renal artery stenosis underwent both IFIR-MRA and CE-MRA. The imaging quality and the stenosis of both techniques were assessed and compared. Results 148 renal arteries (including accessory renal arteries) were displayed by both IFIR-MRA and CE-MRA. The imaging quality of IFIR-MRA was excellent 113 (76.4%), good 20 (13.5%) and poor 15 (10.1%), while the CE-MRA were excellent 123 (83.1%), good 11 (7.4%) and poor 14 (9.5%). The stenosis on 141 vessels could be measured. In a 0-3 stenosis grading system, the IFIR-MRA were 104, 18, 14, 5 and CE-MRA were 103, 22, 9, 7, respectively, showing good correlation (r=0.843, P<0.01). The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of IFIR for renal stenosis detection were 81.2%, 95.2%, 93.6%, 68.4% and 97.5%, respectively with CE-MRA as reference. Conclusion The non-contrast-enhanced IFIR MRA is well consistent with the CE-MRA in renal stenosis detection and can be an alternative to CE-MRA.
