impar

adj.

奇数的，不成对的；

Ultrasound-guided ganglion impar block: a technical report
Modified approach to block the ganglion impar (ganglion of Walther)
Clinical implications of topographic anatomy on the ganglion impar
Cryoablation: a novel approach to neurolysis of the ganglion impar
A751 PRESACRAL BLOCKADE OF THE GANGLION OF WALTHER (GANGLION IMPAR).
An alternative needle geometry for interruption of the ganglion impar.
CT-guided injection for ganglion impar blockade: a radiological approach to the management of coccydynia
Another modified approach to the ganglion of Walther block (ganglion of impar)
CT-guided blocks and neuroablation of the ganglion impar (Walther) in perineal pain: anatomy, technique, safety, and efficacy
Thermocoagulation of the ganglion impar or ganglion of Walther: description of a modified approach. Preliminary results in chronic, ...