The Comparative Study Of Imageology And Imageological Procedure Of Examination On The Early Femoral Head Necrosis In Adult

Objective To .discuss the relationships and the sensitivity and accuracy of X-ray % CT, ECT and MRI findings used in diagnosing the early femoral head necrosis (FHN); to establish the best early imageologic procedure of examination. Materials and Methods 42cases(66 hips) with early FHN in adult(stage Ficat I-II) proved by follow-up study or pathology were analyzed. All patients underwent conventional radiography, CT , ECT and MRI respectively. Results (1)In 66 hips, it has statistical significance to diagnose early FHN by X-ray , CT, ECT and MRI(p<0.001). (2)The line-like signs on MRI in 63 hips of 66 affected hips correspond to the blurred high-density sclerosis line on CT in 34 hips , two parallel lines of high-density and low-density line in 9 hips, band-like increased uptake of radioisotope on ECT in 55 hips and band-like sclerosis on x-ray film in 27 hips. Meanwhile, 3 hips without line-like sign on MRI appear in 66 affected hips. Conclusion (1) For sensitivity and accuracy of imageologic examinations used in diagnosing the early femoral head necrosis (FHN), MRI is higher than CT and ECT ,the two latters are equal and higher than X-ray film.(2)The line-like sign on MRI is corresponded to the high-density sclerosis line on CT, band-like increased uptake of radioisotope on ECT and blurred sclerosis on X-ray film. These manifestations are their specific signs to diagnose early FHN respectively.?The best early imageological procedure of examination was established.Postgraduate Gao Zhenhua(Medical Imaging) Directed by Prof. Xu Aide Prof. Liu Jihua...