Can outer-to-outer diameter be used alone in diagnosing appendicitis on 128-slice MDCT?

作     者：Jamal Yaqoob Muhammad Idris Muhammad Shahbaz Alam Nazia Kashif 

作者机构：Department of Radiology Dallah Hospital Resident Radiology Department Peoples Medical College 

出 版 物：《World Journal of Radiology》 (世界放射学杂志（英文版）（电子版）)

年 卷 期：2014年第6卷第12期

页      面：913-918页

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 100207[医学-影像医学与核医学] 1006[医学-中西医结合] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 1010[医学-医学技术（可授医学、理学学位）] 100106[医学-放射医学] 100602[医学-中西医结合临床] 10[医学] 

主　　题：Normal appendix Multidetector computed tomography Appendiceal enlargement Computed tomography 

摘      要：AIM: To assess the frequency of visualization, position and diameter of normal appendix on 128-slice multidetector computed tomography(MDCT) in adult ***: Retrospective cross sectional study conducted at Radiology Department, Dallah Hospital, Riyadh, Saudi Arabia from March 2013 to October 2013. Non-enhanced computed tomography scans of abdomen and pelvis of 98 patients presenting with hematuria(not associated with abdominal pain, fever or colonic disease) were reviewed by two radiologists, blinded to patient history. The study group included 55 females and 43 males with overall mean age of 54.7 years(range 21 to 94 years). The coronal reformatted images were reviewed in addition to the axial images. The frequency of visualization of appendix was recorded with assessment of position, diameter and luminal ***: The appendix was recorded as definitely visualized in 99% of patients and mean outer-to-outer diameter of the appendix was 5.6 ± 1.3 mm(range 3.0-11.0 mm).CONCLUSION: MDCT with its multiplanar reformation display is extremely useful for visualization of normal appendix. The normal appendix is very variable in its position and diameter. In the absence of other signs, the diagnosis of acute appendix should not be made solely on outer-to-outer appendiceal diameter.