Bayraktutan Ümmugulsum, Oral Akgün, Kantarci Mecit, Demir Muhammet, Ogul Hayri, Yalcin Ahmet, Kaya Idris, Salman Ahmet Bedii, Yiğiter Murat, Okur Adnan
Ataturk University, School of Medicine, Department of Radiology, Erzurum, Turkey.
J Magn Reson Imaging. 2014 Jun;39(6):1518-24. doi: 10.1002/jmri.24316. Epub 2013 Oct 22.
To determine the value of diffusion-weighted MRI for the diagnosis of acute appendicitis in children.
Forty-five consecutive patients with a clinical diagnosis of acute appendicitis underwent abdominal MRI; 39 were operated on for acute appendicitis. First, the diffusion-weighted imaging (DWI) alone was reviewed, followed by conventional MRI alone, and then conventional MRI and DWI were reviewed by two observers within a consensus. The surgical findings were compared with the MRI. Sensitivity, specificity, and accuracy were calculated for DWI, conventional MRI, and combined DWI and conventional MRI for the depiction of acute appendicitis.
A combination of DWI and conventional MRI was the most sensitive and the most accurate, with corresponding sensitivity and accuracy of 0.92 and 0.92, respectively. Using DWI alone the sensitivity and accuracy was found to be 0.78 and 0.77, respectively. Using conventional MRI alone, sensitivity of 0.81 and accuracy of 0.82 was found for the consensus of the two observers.
The use of combination of DWI and conventional MRI is a valuable technique in the diagnosis of acute appendicitis in children.
确定扩散加权磁共振成像（MRI）对儿童急性阑尾炎诊断的价值。
45例临床诊断为急性阑尾炎的患者接受了腹部MRI检查；其中39例因急性阑尾炎接受了手术治疗。首先，单独回顾扩散加权成像（DWI），然后单独回顾传统MRI，之后由两名观察者在达成共识的情况下对传统MRI和DWI进行回顾。将手术结果与MRI结果进行比较。计算DWI、传统MRI以及DWI与传统MRI联合用于显示急性阑尾炎的敏感性、特异性和准确性。
DWI与传统MRI联合使用时最为敏感且最为准确，相应的敏感性和准确性分别为0.92和0.92。单独使用DWI时，敏感性和准确性分别为0.78和0.77。单独使用传统MRI时，两名观察者达成的共识显示敏感性为0.81，准确性为0.82。
DWI与传统MRI联合使用是诊断儿童急性阑尾炎的一种有价值的技术。
