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CT Diagnoses (ct + diagnosis)
Selected AbstractsPap test discrepancies and follow-up histologyDIAGNOSTIC CYTOPATHOLOGY, Issue 2 2003Who's right, does it help to know? Abstract Papanicolaou (Pap) test discrepancy rates between cytotechnologists (CTs) and cytopathologists (CPs) are often kept to evaluate the performance of individual CTs. This is based on the unproven assumption that the CP's diagnoses are more likely to be correct. We investigated this assumption using data from our discrepancy files and comparing them to follow-up histology. All Pap test discrepancies were noted between January 1, 2001,December 31, 2001. Surgical pathology files were then searched for follow-up histology within 9 mo of the Pap test. Histologic diagnoses were compared with the previous CT and CP diagnoses, and then judged regarding accuracy. In total, 63,376 Pap tests were evaluated between January 1, 2001,December 31, 2001. There were 795 discrepancies throughout this period (1.25%). One hundred and sixty-six cases with discrepancies had follow-up histology within 9 mo of the Pap test (20.9%). Of downgraded cases (103), CPs were more correct in 51 cases (49.5%), whereas CTs were more correct in 52 cases (50.5%). Of upgraded cases (63), CPs were more correct in 19 cases (30.2%), whereas CTs were more correct in 44 cases (69.8%). Our results suggest that CPs are not more likely to be correct than CTs when there is a discrepancy with the diagnosis of a Pap test, especially when CPs upgrade CT diagnoses. This suggests that discrepancy data may be helpful for evaluating the performance of both CPs and CTs. It may also be of educational use for both CPs and CTs to know the follow-up histology in these cases. Diagn. Cytopathol. 2003;29:111,115. © 2003 Wiley-Liss, Inc. [source] Is there a role for sonography in the diagnosis of tears of the knee menisci?JOURNAL OF CLINICAL ULTRASOUND, Issue 8 2002Roberto Azzoni MD Abstract Purpose The aim of this study was to investigate the usefulness of sonography in diagnosing tears of the knee menisci. Methods In this retrospective study, we reviewed the sonographic examinations of the knees of 321 patients diagnosed with a torn meniscus on the basis of clinical findings. Of the 321 knees imaged, 216 were also examined using MRI or CT. Arthroscopic meniscectomy was performed on 126 knees. Results MRI or CT did not confirm 48% (71 cases) of the positive sonographic diagnoses (ie, false positives) and 72% (50 cases) of the negative sonographic diagnoses (ie, false negatives). Thus, the sonographic diagnosis was correct in 95 cases (44%) and incorrect in 121 cases (56%), yielding low rates of sensitivity (60%) and specificity (21%). Among the 126 cases in which arthroscopic meniscectomy was performed, arthroscopy confirmed 100% of the MRI or CT diagnoses of meniscal tears. Conclusions Our results indicate that sonography is not accurate enough to be used as the only imaging modality for diagnosing tears of the knee menisci. © 2002 Wiley Periodicals, Inc. J Clin Ultrasound 30:472,476, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI: 10.1002/jcu.10106 [source] Assessment of correlation between computerized tomography values of the bone, and maximum torque and resonance frequency values at dental implant placementJOURNAL OF ORAL REHABILITATION, Issue 12 2006I. TURKYILMAZ summary, The aim of this study was to determine the bone density in the designated implant sites using computerized tomography (CT), the fastening torque values of dental implants, and the implant stability values using resonance frequency analysis. Further aim was to evaluate a possible correlation between bone density, fastening torque and implant stability. Eighty-five patients were treated with 158 Brånemark System implants. CT machine was used for preoperative evaluation of the jawbone for each patient, and bone densities were recorded in Hounsfield units (HU). The fastening torque values of all implants were recorded with the OsseoCare equipment. Implant stability measurements were performed with the Osstell machine. The average bone density and fastening torque values were 751·4 ± 256 HU and 39·7 ± 7 Ncm for 158 implants. The average primary implant stability was 73·2 ± 6 ISQ for seventy implants. Strong correlations were observed between the bone density, fastening torque and implant stability values of Brånemark System TiUnite MKIII implants at implant placement (P < 0·001). These results strengthen the hypothesis that it may be possible to predict and quantify initial implant stability and bone quality from pre-surgical CT diagnosis. [source] Contribution of Contrast-Enhanced Ultrasonography to Nonoperative Management of Segmental Ischemia of the Head of a Pancreas GraftAMERICAN JOURNAL OF TRANSPLANTATION, Issue 2 2009U. Boggi A 32-year-old recipient of a pancreas transplant (PTx) alone was diagnosed with segmental graft ischemia, involving the head of the pancreas graft (HPG), based on color Doppler ultrasonography (CDU) and computed tomography (CT) angiography. For investigational purposes, graft supply was further checked by contrast-enhanced ultrasonography (CEU). Surprisingly, CEU showed collateral blood supply to the HPG starting from 40 s after contrast injection and resulting in homogenous parenchymography at 90 s. Full-dose heparin infusion, followed by long-term oral anticoagulation, allowed graft salvage without reoperation. At the longest follow-up of 18 months, the patient is insulin independent. This case report shows that CEU may be employed in PTx recipients suspected to harbor vascular complications. To the best of our knowledge, this is the first description of the use of CEU in PTx and the first description of graft salvage, without partial pancreatectomy after CDU and CT diagnosis of segmental graft ischemia. [source] | ||||||||||