Bonaldi V M, Bret P M, Atri M, Reinhold C
Department of Radiology, Montreal General Hospital, McGill University, Quebec, Canada.
AJR Am J Roentgenol. 1998 Feb;170(2):373-6. doi: 10.2214/ajr.170.2.9456948.
Radiologists must manage a tremendous number of helical CT images daily. Hence, the use of cine display review is increasing. Our aim was to compare cine display of helical CT examinations of the pancreas with conventional film-based viewing.
Forty-eight consecutive patients undergoing helical CT of the pancreas were prospectively included in the study. Five-millimeter-thick contrast-enhanced helical CT sections of the pancreas were reconstructed in 1-mm increments for cine display review and in 5-mm-thick increments for film-based review. Two radiologists reviewed the two sets of data independently. Review of the cine display images was followed by review of the film-based images 2 months later. For both the cine display and the film-based images, reviewers used a four-point scale to grade vascular anatomy (splenic vein and artery, superior mesenteric vein and artery, portal confluence, dorsal pancreatic artery, and gastroduodenal artery); ductal anatomy (common bile duct in its hilar, suprapancreatic, and intrapancreatic portions and pancreatic duct in its caudal, corporeal, and cephalic portions); sharpness of the pancreatic and lesion contours; and overall image quality.
The conspicuity of pancreatic contours was graded better on cine display (p = .0035). All venous and arterial landmarks were graded significantly better on cine display. Likewise, visibility of the common bile ducts and pancreatic ducts was scored significantly better with cine display. In three patients, cine display images revealed the pancreatic duct, and the film-based images did not. Although 21 lesions were shown on both sets of images, the lesions were better seen on cine display (p < .005).
Vascular and ductal anatomy is better delineated on cine images generated from overlapped sections than on conventional film-based images. Lesions are also more sharply delineated on cine display images.
放射科医生每天必须处理大量的螺旋CT图像。因此，电影显示阅片的使用正在增加。我们的目的是比较胰腺螺旋CT检查的电影显示与传统的基于胶片的阅片方式。
前瞻性纳入48例连续接受胰腺螺旋CT检查的患者。胰腺5毫米厚的对比增强螺旋CT图像以1毫米的增量重建用于电影显示阅片，以5毫米的增量重建用于基于胶片的阅片。两位放射科医生独立审查这两组数据。在对电影显示图像进行审查后，2个月后再对基于胶片的图像进行审查。对于电影显示图像和基于胶片的图像，审查人员均使用四点量表对血管解剖结构（脾静脉和动脉、肠系膜上静脉和动脉、门静脉汇合处、胰背动脉和胃十二指肠动脉）、导管解剖结构（肝门部、胰上和胰内部分的胆总管以及胰尾、体和头部的胰管）、胰腺和病变轮廓的清晰度以及整体图像质量进行分级。
电影显示对胰腺轮廓的清晰度分级更好（p = 0.0035）。所有静脉和动脉标志在电影显示上的分级均明显更好。同样，电影显示对胆总管和胰管的可见性评分也明显更高。在3例患者中，电影显示图像显示了胰管，而基于胶片的图像未显示。尽管两组图像上均显示了21个病变，但在电影显示上病变看得更清楚（p < 0.005）。
与传统的基于胶片的图像相比，重叠切片生成的电影图像能更好地描绘血管和导管解剖结构。电影显示图像上的病变也能更清晰地描绘出来。
