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Objective:To compare the values of medical image technologies in evaluating the tansperineal laser ablation (TPLA) in canine prostate.Methods:TPLA (3 W/600 J and 3 W/1 200 J) were operated in the prostate of six adult male beagles guided by transrectal ultrasound (TRUS). TRUS, transrectal contrast-enhanced ultrasound (TR-CEUS) and multiparameter magnetic resonance imaging (mpMRI) were used to evaluate the ablation on the day of TPLA, one week and one month after TPLA. The animals were sacrificed for pathology to calculate the volume of the ablation. SPSS 22.0 software was used for statistical analysis.Results:TRUS could be used to guide and observe the puncture and ablation process during TPLA. TR-CEUS and contrast enhanced MRI showed good consistency in the volume of ablation ( P>0.05). One month after TPLA, the ablation volume were (1.69±0.51)ml vs (1.73±0.36)ml vs (1.52±0.41)ml (3 W/600 J) and (2.23±0.54)ml vs (2.34±0.29)ml vs (2.19±0.34)ml (3 W/1 200 J) measured by the two medical image technologies and pathology, with good consistency ( P>0.05). Conclusions:TRUS can be used to guide and observe the puncture and ablation process during TPLA. TR-CEUS and mpMRI can be used for postoperative evaluation and follow-up of TPLA. The former has advantages of real-time and low price, which can be promoted and applied in clinical practice.
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Objective To explore the clinical value of CT for guiding interventional therapy of Budd-Chiari syndrome (BCS) with inferior vena cava (IVC) obstruction.Methods A total of 329 consecutive BCS patients with IVC obstruction underwent endovascular treatment.All the patients underwent CT examination prior to endovascular treatment,and the data were retrospectively reviewed.The accuracy,sensitivity,specificity,positive predictive value (PPV) and negative predictive value (NPV) of CT were compared with results of DSA.Results DSA showed partial obstructive IVC in 108 BCS patients and complete obstructive IVC in 221 patients.CT demonstrated partially obstructive IVC in 99 patients and completely obstructive IVC in 230 patients.CT revealed 15 false-negative and 6 false-positive results.CT diagnosis of puncture or not yielded an accuracy of 94.19％,sensitivity of 97.29％,specificity of 86.11％,PPV of 93.49％ and NPV of 93.94 ％ for detection of BCS with partial IVC obstruction,while CT-based interventional treatment plan yield an accuracy of 97.55 ％,sensitivity of 100 ％,specificity of 92.52 ％,PPV of 96.49 ％ and NPVof 100％.Conclusion CT can provide high diagnostic accuracy and sensitivity for BCS patients with obstructed IVC,therefore being helpful to planning interventional treatment of BCS.
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Objective To investigate the diagnostic value of CT-guided craniocerebral puncture biopsy, and to discuss its clinical safety. Methods During the period from April 2013 to June 2014 at authors’ hospital CT-guided craniocerebral puncture biopsy was carried out in 23 patients. All patients had clinical symptoms or signs of nervous system. Imaging examination revealed that all patients had intracranial space-occupying lesions. CT-guided craniocerebral puncture biopsy was performed to make pathological or bacteriological examinations. The results were statistically analyzed. Results In this group of patients, definite pathological diagnosis was made in 19 cases, biopsy positive diagnosis rate of biopsy was 82.6% (19/23), among them oncology-pathological diagnosis was obtained in 14 cases (60.9%), mainly including glioma, non-Hodgkin lymphoma, dysembryoplastic neuroepithelial tumor, choroid plexus papillary tumor, epidermoid cyst, etc. Non-neoplastic lesion was confirmed in 5 cases (21.7%), including suppurated meningitis, cerebral gliosis hyperplasia, cerebral telangiectasis, etc. Small amount of subdural hemorrhage was observed in one case (4.3%). No severe complications, such as intracranial infection or epilepsy, occurred in all patients. Conclusion CT-guided craniocerebral puncture biopsy is minimally-invasive with fewer complications, it can provide definite diagnosis for intracranial lesions, therefore, this technique has a broad development prospect in clinical practice.
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he improvement of operation skill and stent system, a better outcome in the future could be achieved.
