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  • 1
    Electronic Resource
    Electronic Resource
    Usefulness and safety of pirenzepine in double-contrast study of upper gastrointestinal tract: Comparison with scopolamine methylbromide (1994)
    Springer
    Abdominal imaging 19 (1994), S. 201-206 
    Details
    ISSN: 1432-0509
    Keywords: Upper gastrointestinal tract ; Double-contrast studies ; Stomach ; Duodenum ; Pirenzepine ; Scopolamine methylbromide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To evaluate usefulness of pirenzepine, a selective M1 antimuscarinic drug, for diagnostic doublecontrast study of the upper gastrointestinal tract, pirenzepine and scopolamine methylbromide (SMB) were compared in a single blind randomized trial. Seventy consecutive patients were enrolled in the study. Artifacts, bowel distention, painting of stomach and duodenal bulb, and global quality of the images were blindly evaluated by four independent observers by means of a numerical score (1–4). Under SMB slightly but significantly better results for stomach were scored (3.1±.7 vs. 2.7±7, p〈 0.01). No differences were found in the study of the duodenal bulb. Heart rate and rhythm during the study were recorded by electrocardiogram (ECG). SMB induced tachycardia in all patients (from 77±20 to 117±28 beats/min, p 〈 0.01) while pirenzepine did not (from 77±16 to 81±23, p = NS). After SMB, two patients exhibited faintness, and some patients complained of visual accommodation defects, dryness of the mouth, and dizziness. Thus, pirenzepine provides good results in double-contrast studies (equal to SMB), while presenting no adverse effects. It could be proposed as a first choice hypotonic agent in upper gastrointestinal examination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203506
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  • 2
    Electronic Resource
    Electronic Resource
    Small hepatocellular carcinoma: differentiation from adenomatous hyperplasia with color Doppler US and dynamic Gd-DTPA-enhanced MR imaging (1996)
    Springer
    Abdominal imaging 21 (1996), S. 41-48 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Liver, cirrhosis—Liver neoplasms—Liver neoplasms, diagnosis—Liver neoplams, MR—Liver neoplams, US—US, Doppler study.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Background: To investigate the usefulness of color Doppler ultrasound (US) and dynamic Gd-DTPA-enhanced magnetic resonance (MR) imaging in the differentiation of small hepatocellular carcinoma (HCC) and adenomatous hyperplasia (AH). Methods: Thirty-eight small (3 cm or less) nodular lesions (in 38 cirrhotic patients) with US features consistent with HCC underwent evaluation with color Doppler US and MR imaging. Breath-hold T1-weighted rapid acquisition spin echo MR sequence after bolus injection of 0.1 mmol/kg gadopentetate dimeglumine was used to evaluate dynamic enhancement. US-guided tissue-core percutaneous biopsy established the diagnosis: HCC in 28 cases and AH in 10. Results: Color signals with pulsatile or continuous Doppler spectrum were demonstrated in 19 of 28 HCCs (68%) but in none of the AHs. Although there was considerable overlap in signal intensity between HCC and AH on both unenhanced T1- and T2-weighted images, early enhancement on breath-hold T1-weighted images obtained 40 s after starting contrast administration was observed in 22 of 28 HCCs (79%) but in none of the AHs. In 26 of 28 HCCs (93%), pulsatile or continuous flow at color Doppler US, early enhancement at dynamic MR imaging, or both were observed. Conclusion: Findings with color Doppler US and dynamic Gd-DTPA-enhanced MR imaging enable a reliable distinction between small HCC and AH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900007
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  • 3
    Electronic Resource
    Electronic Resource
    Fatal thrombosis of the portal vein following single-session percutaneous ethanol injection therapy of hepatocellular carcinoma (1998)
    Springer
    Abdominal imaging 23 (1998), S. 608-610 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Alcohol—Interventional procedures, complications—Liver, interventional procedure—Liver neoplasms, therapy.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Two weeks after percutaneous ethanol injection therapy for hepatocellular carcinoma, performed by injecting 110 mL ethanol in a single session with general anesthesia, a 69-year-old woman with well-compensated liver cirrhosis developed an extensive thrombosis of the whole portal tree that caused severe uncorrectable ascites and progressive deterioration of her general condition, resulting in death 6 weeks after the procedure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900413
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  • 4
    Electronic Resource
    Electronic Resource
    Intrahepatic metastatic nodules of hepatocellular carcinoma detected at Lipiodol-CT: imaging-pathologic correlation (1997)
    Springer
    Abdominal imaging 22 (1997), S. 253 -258 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Contrast media, fatty acid—Lipiodol, hepatic intraarterial—Liver neoplasms, angiography—Liver neoplasms, CT—Liver neoplasms, diagnosis.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Background: The purpose of this study was to determine whether tiny (〈2 cm) areas of iodized-oil retention diagnosed as intrahepatic metastatic nodules of hepatocellular carcinoma (HCC) at computed tomography (CT) following intraarterial injection of Lipiodol (Lipiodol-CT) correlate with truly cancerous foci on the corresponding sectioned pathologic specimens. Methods: Thirty-two consecutive patients with biopsy-proven HCC (26 men and six women, aged 41–72 years) underwent prospective evaluation with Lipiodol-CT before undergoing surgery (hepatic resection, 30 patients; liver transplantation, two patients). Imaging findings were correlated with intraoperative and pathologic findings. Results: Twenty-one areas of retained Lipiodol (0.5–1.6 cm in diameter, mean ± SD: 0.9 ± 0.3 cm) had features consistent with intrahepatic metastatic nodules of HCC on Lipiodol-CT scans. Nineteen of the 21 areas correlated with tumor deposits at pathologic examination of the surgical specimens, whereas two of 21 were due to abnormal retention of iodized oil within noncancerous liver parenchyma. The positive predictive value of findings at Lipiodol-CT for the diagnosis of intrahepatic metastatic nodule of HCC was 90.5%. Conclusions: Findings at Lipiodol-CT enable a reliable diagnosis of intrahepatic metastatic nodules of HCC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900183
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  • 5
    Electronic Resource
    Electronic Resource
    Spiral CT virtual endoscopy of abdominal arteries: clinical applications (2000)
    Springer
    Abdominal imaging 25 (2000), S. 59-61 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Aorta, aneurysm—Renal artery, stenosis—Prostheses—Images, virtual—Spiral CT.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Virtual endoscopy enables the creation of endoluminal views of the aorta and its branches by processing spiral computed tomographic (CT) images, thereby allowing the preoperative and postoperative evaluations of abdominal aortic aneurysms, aneurysms of the splenic, celiac, and common iliac arteries, and renal artery stenoses. Moreover, it is helpful for verifying the position of stents and endoprostheses from within the aortic lumen. This method is a promising addition to spiral CT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/s002619910012
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  • 6
    Electronic Resource
    Electronic Resource
    MR virtual endoscopy of the pancreaticobiliary tract: a feasible technique? (1999)
    Springer
    Abdominal imaging 24 (1999), S. 289-291 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Bile ducts, MR—Bile ducts, diseases—Magnetic resonance (MR), image processing—Bile ducts, calculi—Endoscopy.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To evaluate the feasibility of magnetic resonance (MR) virtual endoscopy of the pancreaticobiliary tract by using MR cholangiopancreatography (MRCP) data sets as source images, we retrospectively reviewed MRCP data sets of 120 patients with Navigator software (GE/Medical Systems, Milwaukee, WI) that allowed display of inner views by surface rendering the internal wall of the bile ducts with simulated light and shadow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900497
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  • 7
    Electronic Resource
    Electronic Resource
    Percutaneous biopsy of liver tumors with color Doppler US guidance (1995)
    Springer
    Abdominal imaging 20 (1995), S. 206-208 
    Details
    ISSN: 1432-0509
    Keywords: Abdomen, ultrasound ; Liver biopsy, technique ; Liver neoplasms, diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Percutaneous liver biopsy is a well-established procedure. Aim of this study was to investigate the usefulness of color Doppler ultrasound (US) for guiding percutaneous biopsy of liver tumors in patients at high risk of bleeding. Methods: Forty-seven patients with severe, uncorrectable coagulopathy (platelet count 〈50 × 109/L and/or prothrombin time ratio [normal/patient] 〈50%) were submitted to percutaneous biopsy of focal liver lesions using a 21 G cutting needle. The procedure was guided by color Doppler US, avoiding the needle cross into any liver or tumor vessel. Results: Biopsy material was adequate for pathological reading in 46/47 cases (97.9%). No major post-biopsy complication was observed. In particular, no case of hemoperitoneum was detected on US examinations performed 2 hours after biopsy. Minor complications (including one subcapsular hematoma) occurred in 4 patients (8.5%). Conclusions: Color Doppler US can safely guide percutaneous liver biopsy in patients at high-risk of bleeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00200394
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  • 8
    Electronic Resource
    Electronic Resource
    Local staging of prostate carcinoma with endorectal coil MRI: correlation with whole-mount radical prostatectomy specimens (1996)
    Springer
    European radiology 6 (1996), S. 339-345 
    Details
    ISSN: 1432-1084
    Keywords: Magnetic resonance ; Surface coils ; Prostate ; Neoplasms ; Seminal vesicle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The purpose of this study was to investigate the accuracy of endorectal coil MRI in the local staging of prostate carcinoma. A total of 73 patients with biopsy-proven prostate carcinoma were examined at 0.5 T prior being submitted to radical prostatectomy. The gold standard was provided in all patients by findings at whole-mount sectioning of the surgical specimens. At pathology 28 patients had stage T2, 30 had stage T3a/b, and 15 had stage T3c lesions. Overall accuracy of endorectal coil MRI in defining local tumor stage was 82% (60 of 73 patients). Of 73 patients, 5 (7%) were underestimated and 8 (11%) overestimated. The sensitivity and the specificity of endorectal coil MRI in diagnosing capsular penetration were 95% and 82%, respectively. Seminal vesicle invasion was detected with 80% sensitivity and 93% specificity. Our data indicate that endorectal coil MRI is an accurate method for local staging of prostate cancer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00180606
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  • 9
    Electronic Resource
    Electronic Resource
    Ultrasonography of gastrointestinal tract disorders: retrospective and prospective evaluation (1995)
    Springer
    European radiology 5 (1995), S. 347-353 
    Details
    ISSN: 1432-1084
    Keywords: Gastrointestinal tract ; Gastrointestinal tract, inflammation ; Gastrointestinal tract, neoplasms ; Ultrasonography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a retrospective analysis performed on 4167 routine abdominal sonographic (US) examinations (September 1989 to December 1991), 93 US reports strongly suggesting the presence of gastrointestinal (GI) tract disorders were found. Neoplastic GI tract diseases were indicated in 65.6 % of cases and non-neoplastic conditions in 34.4 %. The final diagnoses confirmed all the cases of non-neoplastic disease, while 3 patients sonographically suspected as having a neoplasm proved not to have any GI tract abnormality. In the period January 1992 to December 1992, 62 patients with a suspected GI tract abnormality were enrolled in a prospective double-masked US study after being submitted to conventional radiological studies only in 28 of 62 cases, after conventional studies and CT in 24 of 62 cases, and after CT only in 10 of 62 cases. Sonography furnished additional diagnostic information in 28 of 62 cases when the previous radiological examination did not include CT, but sonography misinterpreted 4 inflammatory disorders as tumours. Our study confirmed the important role of US alone or in association with other imaging modalities in the study of GI tract diseases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00184942
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  • 10
    Electronic Resource
    Electronic Resource
    Ethanol injection for the treatment of hepatic tumours (1996)
    Springer
    European radiology 6 (1996), S. 682-696 
    Details
    ISSN: 1432-1084
    Keywords: Alcohol ; Liver neoplasms ; diagnosis ; Liver neoplasms ; therapy ; Liver ; interventional procedure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Percutaneous ethanol injection (PEI) is a relatively new therapeutic technique for the treatment of liver tumours. PEI is now considered a reliable alternative to surgical resection for cirrhotic patients with a single, small hepatocellular carcinoma (HCC). Intratumoral injection of absolute ethanol, in fact, achieves complete ablation of HCC nodules 3 cm or less in diameter with a high probability. Moreover, PEI is not associated with significant morbidity or mortality and does not damage non-cancerous liver parenchyma. Long-term survival rates of PEI-treated patients were similar to those obtained in matched patients submitted to partial hepatectomy. In large HCC lesions, the anticancer effect of PEI can be significantly enhanced by pretreatment of the tumour with transcatheter arterial chemoembolisation. PEI may also be effectively used to destroy adenomatous hyperplastic nodules in liver cirrhosis, which represent precancerous lesions. The results of PEI in the treatment of liver metastases, in contrast, have been far less encouraging than in the case of HCC, so that PEI is not recommended when other interventional procedures such as radiofrequency electrocautery or interstitial laser photocoagulation are available. Imaging procedure plays a key role in PEI, as they provide a reliable assessment of the therapeutic effect of the procedure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187673
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