Matsuura Tomonori, Takase Kei, Ota Hideki, Yamada Takayuki, Sato Akihiro, Satoh Fumitoshi, Takahashi Shoki
Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, 1-1 Seiryo, Aoba, Sendai, Miyagi, 980-8574, Japan.
AJR Am J Roentgenol. 2008 Aug;191(2):402-8. doi: 10.2214/AJR.07.3338.
The purpose of our study was to determine how frequently the right adrenal vein could be unequivocally identified on MDCT and the spectrum of anatomic variations seen in the right adrenal vein.
Contrast-enhanced MDCT was performed in 104 patients with thoracoabdominal vascular disease using an 8-MDCT scanner. Both axial and multiplanar images were reviewed by two radiologists. The following points regarding the right adrenal vein were evaluated: degree of visualization; relationship to accessory hepatic or other veins; anatomy, including location of the orifice in relation to the surrounding structures; direction from the inferior vena cava; and length and diameter.
The right adrenal vein was detected in 79 (76%) of 104 patients. The right adrenal vein formed a common trunk with the accessory hepatic vein in six (8%) of the 79 patients. The orifice was craniocaudally located between the level of vertebrae T11 and L1. Among the 73 patients, the right adrenal vein joined the inferior vena cava in the right posterior quadrant in 71 patients (97%) and in the left posterior quadrant in two (3%). The transverse direction from the inferior vena cava was posterior and rightward in 56 patients (77%) and posterior and leftward in 17 (23%); the vertical direction from the inferior vena cava was caudal in 65 (89%) and cranial in eight (11%) patients. The length and diameter averaged 3.8 and 1.7 mm, respectively.
MDCT enabled the identification of the right adrenal vein and delineation of its anatomy, including its position and relationship to surrounding structures.
我们研究的目的是确定在多排螺旋CT（MDCT）上能明确识别右肾上腺静脉的频率以及观察右肾上腺静脉的解剖变异谱。
使用8排MDCT扫描仪对104例胸腹血管疾病患者进行增强MDCT检查。两名放射科医生对轴位和多平面图像进行了评估。对右肾上腺静脉的以下几点进行了评估：显影程度；与副肝静脉或其他静脉的关系；解剖结构，包括开口相对于周围结构的位置；从下腔静脉发出的方向；以及长度和直径。
104例患者中有79例（76%）检测到右肾上腺静脉。79例患者中有6例（8%）右肾上腺静脉与副肝静脉形成共同干。开口位于第11胸椎至第1腰椎水平之间的头尾方向。在73例患者中，71例（97%）右肾上腺静脉在右下后象限汇入下腔静脉，2例（3%）在左下后象限汇入。从下腔静脉发出的横向方向，56例（77%）为向后向右，17例（23%）为向后向左；从下腔静脉发出的垂直方向，65例（89%）为向下，8例（11%）为向上。长度和直径平均分别为3.8mm和1.7mm。
MDCT能够识别右肾上腺静脉并描绘其解剖结构，包括其位置以及与周围结构的关系。
