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| Value of multi-direction multiplanar reconstruction with multislice CT for guiding biopsy of focal pulmonary lesions |
| QUAN Guan-min, YUAN Tao |
| Radiology Department, the Second Hospital Affiliated to Hebei Medical University, Shijiazhuang 050000, China |
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Abstract Objective: To study the value of multi-direction multiplanar reconstruction(MPR) using multislice CT for guiding biopsy of focal pulmonary lesions. Methods: Thirty-three cases and 31 cases with focal lung diseases were biopsied guided by axial CT imaging(non-MPR) and multi-direction MPR imaging successfully. The difficulty of biopsy, total time of manipulation, the times of puncture, the incidence of complications, average dose-length product(DLP) and the rate of definitive diagnosis were compared between the two groups. Results: There was no difference of biopsy diffculty and the rate of definitive diagnosis between non-MPR and MPR groups. The time consumption for MPR group was 33 minutes, and 44 minutes for non-MPR group(P<0.001). For successful biopsy, 1.16 times of puncture were made for MPR group, whereas 1.61 times for non-MPR group(P=0.001). Only 6 patients(19.35%) of MPR group had a little pneumothorax or hemoptysis, but the complication incidence of non-MPR group was 45.45%(15/33)(P<0.05). The average DLP was 81.84mGy·cm for MPR group and 91.18mGy·cm for the non-MPR group(P<0.001). Conclusion: With guidance of multi-direction MPR of multislice CT scan, the puncture path and the relationship between lesions and surrounding structures were manifested visually. Hence the manipulation time, the times for puncture and intraoperative scan, incidence of complications and exposure dose were reduced markedly. So multi-direction MPR is a valuable method for needle biopsy of focal pulmonary diseases, especially for deep lesions.
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Received: 25 July 2006
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2007, Vol. 18 
