天津医药
天津醫藥
천진의약
TIANJIN MEDICAL JOURNAL
2014年
6期
619-621
,共3页
石会兰%郑振峰%马慧%李峰坦%张敬%张云亭
石會蘭%鄭振峰%馬慧%李峰坦%張敬%張雲亭
석회란%정진봉%마혜%리봉탄%장경%장운정
肾皮质%肾髓质%磁共振成像%肾小球滤过率%血氧水平依赖磁共振成像%R2*值
腎皮質%腎髓質%磁共振成像%腎小毬濾過率%血氧水平依賴磁共振成像%R2*值
신피질%신수질%자공진성상%신소구려과솔%혈양수평의뢰자공진성상%R2*치
kidney cortex%kidney medulla%magnetic resonance imaging%glomerular filtration rate%blood oxygen lev-el dependent magnetic resonance imaging%R2*value
目的:探讨正常肾脏的血氧水平依赖磁共振(BOLD-MRI)成像特点,以及与部分生理指标之间的相关性。方法纳入90例行腹部磁共振检查的非肾脏病患者。使用GE 3.0 T磁共振扫描仪和Torsopa相控阵线圈,行肾脏冠状面T1WI及BOLD成像,BOLD-MRI成像扫描采用T2*自旋梯度回波(T2*SPGR)序列,BOLD影像分析采用R2*map后处理软件,分别从肾脏皮质和髓质区选取感兴趣区(ROI)测量表观自旋-自旋弛豫率(R2*)值。分析R2*值与患者年龄、性别、身高、体质量、体质量指数(BMI)、体表面积(BSA)和估算的肾小球滤过率(eGFR)之间的相关性。结果两侧肾脏皮质区R2*值[左侧(16.56±1.40)Hz和右侧(16.66±1.28)Hz]均低于相应髓质区[左侧(28.82±3.71)Hz和右侧(28.36±3.72)Hz];女性和男性患者皮质R2*值[女性(16.55±1.30)Hz和男性(16.66±1.38Hz)]也低于相应的髓质区[女性(28.46±3.64)Hz和男性(28.70±3.78)Hz]。双侧肾脏髓质区肾脏下极R2*值[(27.29±3.05)]Hz低于中极[(29.32±3.47)Hz]和上极[(29.16±4.21)Hz];差异均有统计学意义。髓质R2*值与年龄呈正相关,与eGFR呈负相关(r分别为0.284、-0.232,均P<0.05)。结论 R2*值可反映肾脏皮髓质氧分压的水平,判断其缺血缺氧程度。BOLD-MRI提供了一种简单、易行且无创性检测肾脏皮髓质氧代谢的方法。
目的:探討正常腎髒的血氧水平依賴磁共振(BOLD-MRI)成像特點,以及與部分生理指標之間的相關性。方法納入90例行腹部磁共振檢查的非腎髒病患者。使用GE 3.0 T磁共振掃描儀和Torsopa相控陣線圈,行腎髒冠狀麵T1WI及BOLD成像,BOLD-MRI成像掃描採用T2*自鏇梯度迴波(T2*SPGR)序列,BOLD影像分析採用R2*map後處理軟件,分彆從腎髒皮質和髓質區選取感興趣區(ROI)測量錶觀自鏇-自鏇弛豫率(R2*)值。分析R2*值與患者年齡、性彆、身高、體質量、體質量指數(BMI)、體錶麵積(BSA)和估算的腎小毬濾過率(eGFR)之間的相關性。結果兩側腎髒皮質區R2*值[左側(16.56±1.40)Hz和右側(16.66±1.28)Hz]均低于相應髓質區[左側(28.82±3.71)Hz和右側(28.36±3.72)Hz];女性和男性患者皮質R2*值[女性(16.55±1.30)Hz和男性(16.66±1.38Hz)]也低于相應的髓質區[女性(28.46±3.64)Hz和男性(28.70±3.78)Hz]。雙側腎髒髓質區腎髒下極R2*值[(27.29±3.05)]Hz低于中極[(29.32±3.47)Hz]和上極[(29.16±4.21)Hz];差異均有統計學意義。髓質R2*值與年齡呈正相關,與eGFR呈負相關(r分彆為0.284、-0.232,均P<0.05)。結論 R2*值可反映腎髒皮髓質氧分壓的水平,判斷其缺血缺氧程度。BOLD-MRI提供瞭一種簡單、易行且無創性檢測腎髒皮髓質氧代謝的方法。
목적:탐토정상신장적혈양수평의뢰자공진(BOLD-MRI)성상특점,이급여부분생리지표지간적상관성。방법납입90례행복부자공진검사적비신장병환자。사용GE 3.0 T자공진소묘의화Torsopa상공진선권,행신장관상면T1WI급BOLD성상,BOLD-MRI성상소묘채용T2*자선제도회파(T2*SPGR)서렬,BOLD영상분석채용R2*map후처리연건,분별종신장피질화수질구선취감흥취구(ROI)측량표관자선-자선이예솔(R2*)치。분석R2*치여환자년령、성별、신고、체질량、체질량지수(BMI)、체표면적(BSA)화고산적신소구려과솔(eGFR)지간적상관성。결과량측신장피질구R2*치[좌측(16.56±1.40)Hz화우측(16.66±1.28)Hz]균저우상응수질구[좌측(28.82±3.71)Hz화우측(28.36±3.72)Hz];녀성화남성환자피질R2*치[녀성(16.55±1.30)Hz화남성(16.66±1.38Hz)]야저우상응적수질구[녀성(28.46±3.64)Hz화남성(28.70±3.78)Hz]。쌍측신장수질구신장하겁R2*치[(27.29±3.05)]Hz저우중겁[(29.32±3.47)Hz]화상겁[(29.16±4.21)Hz];차이균유통계학의의。수질R2*치여년령정정상관,여eGFR정부상관(r분별위0.284、-0.232,균P<0.05)。결론 R2*치가반영신장피수질양분압적수평,판단기결혈결양정도。BOLD-MRI제공료일충간단、역행차무창성검측신장피수질양대사적방법。
Objective To explore the characteristics of blood oxygen level dependent (BOLD) magnetic resonance imaging (MRI) in healthy native kidneys. To investigate the relationship between BOLD-MRI and common physiological in-dexes. Methods GE 3.0T MRI scanner and Torsopa phased-array coil were employed to acquire renal coronal T1WI and BOLD image. Ninety patients who were ruled out chronic kidney diseases underwent BOLD-MRI with T2*-spoiled gradient recalled echo (T2*SPGR) sequence. BOLD images were analyzed on R2*map software. Cortical and medullary R2*values were analyzed in bilateral kidneys and in different gender. Different regional R2*values in cortex and medulla were also ana-lyzed. Physiological indices including age, body height and weight, body mass index (BMI), body surface area (BSA), estimat-ed glomerular filtration rate (eGFR) were recorded. Correlation between R2*value and physiological indices were analyzed. Results Bilateral renal cortical R2*values [left (16.56±1.40) Hz and right (16.66±1.28)Hz, respectively] were less than val-ues in medulla [left (28.82±3.71)Hz and right (28.36±3.72)Hz, respectively]. Female and male cortical R2*values [female (16.55±1.30Hz) and male (16.66±1.38)Hz, respectively] were also less than corresponding values in medulla [female (28.46± 3.64) Hz and male (28.70±3.78) Hz, respectively]. In bilateral renal medullary region, R2*values in low pole (27.29±3.05) Hz was less than values in middle (29.32±3.47) Hz and upper pole (29.16±4.21)Hz (F=15.184, P<0.001). Age was positive-ly correlated with R2* values in medulla (r =0.284, P =0.002). However, eGFR was negatively correlated with medullary R2*value (r=-0.232, P=0.007). Conclusion R2*values reflected the levels of renal partial pressure of oxygen and as-sessed the degree of renal ischemia. BOLD MRI could offer a simple, convenient and noninvasive method for to evaluate renal oxygen metabolism in cortex and medulla.